ys logo - Acoustic · PDF fileManual-Servive-ap4040-2v9.pdf v.2.9 6/2002 SERVICE MANUAL 1. Parts List 2. ... • M1146 PCB layout 5v5 4. Service Kit • M1146 5. Power Amp Module AP4040

AP4040

1. Parts List

2. Pot Board• M1128 Schematic 1v1• M1128 PCB layout 3v0

3. Input Board• M1129 Schematic 2v1• M1129 PCB layout 4v0

4. Power Supply Board• M1147 Schematic 1v4• M1147 PCB layout 4v0

• M1146 Schematic1v3• M1146 PCB layout 5v5

4. Service Kit• M1146

5. Power Amp Module

Manual-Servive-ap4040-2v9.pdf v.2.9 6/2002

SERVICE MANUAL

U.S.A.

Yorkville Sound Inc.4625 Witmer Industrial Estate

Niagara Falls, New York14305 USA

Voice: (716) 297-2920Fax: (716) 297-3689

WORLD HEADQUARTERSCANADA

Yorkville Sound550 Granite CourtPickering, Ontario

L1W-3Y8 CANADA

Voice: (905) 837-8481Fax: (905) 837-8746

Quality and Innovation Since 1963Printed in Canada

WEB: www.yorkville.com

amacdonald

Text Box

1200W into 4 ohms per channel

AP4040 Parts List 3/8/99Qty. YS # Description Qty. YS # Description Qty.

3114T 1 4520 10K TRIM POT (ENCLOSED) 2 4990 1/4W 8K2 5%MINI T&R RES 2 SPACER T&R 3 4390 _10K AUDIO DETENT STYLE"P22"16MM 2 4762 1/4W 9K760 0.1% *** T&R RES 8 SPACER T&R 3 2448 15.0 AMP CIRCUIT BREAKER 1 4800 1/4W 10K0 1% T&R RES 3RIGHT PACE 3 3410 RED ON LEFT DUAL BINDING POST TPP4 1 4829 1/4W 10K 5% T&R RES 4 FROSTED 3 3415 RED ON RIGHT DUAL BINDING POST TPP4 1 4940 1/4W 10K 5% .2"U T&R RES 1AD GI3504 2 3918 1/4" SLIM JACK PC MOUNT W/SCREW 2 4983 1/4W 10K 5%MINI T&R RES 8T&R 4 3628 PC-MOUNT 250TAB SPEAKON #4SCREW GRY 3 6116 1/4W 10K0 1%MINI MF T&R RES 12&R 17 3657 FEMALE XLR PC MOUNT HORIZONTAL 2 4856 1/4W 12K 5% T&R RES 4&R 48 3860 FAN 80MM X 80MM 40CFM 12VDC 1 4630 1/2W 15K 5% T&R RES 2AST RECOV 20 3821 HEYCO #1200 STRAIN RELIEF 1 4830 1/4W 15K 5% T&R RES 4R 5% T&R 2 8701 4-40 KEPS NUT ZINC 20 4771 1/4W 17K8 1% T&R RES 2ER 5% T&R 9 8793 4-40 HEX NUT ZINC 3 6125 1/4W 18K 5%MINI T&R RES 2

ER 5% T&R 1 8760 6-32 KEPS NUT TIN PLATED 64 4885 1/4W 20K 5% T&R RES 4R 5% T&R 4 8800 6-32 KEPS NUT ZINC 3 6123 1/4W 20K0 1%MINI MF T&R RES 6R 5% T&R 4 8720 #8 SPRING NUT 2 4777 1/4W 21K5 1% T&R RES 2R 5% T&R 2 8797 5/16-18 KEPS NUT JS500 1 4632 1/2W 22K 5% T&R RES 8R 5% T&R 2 3797 TO-247 THERMO CONDUCTIVE PAD 4 4832 1/4W 22K 5% T&R RES 2R 5% T&R 1 3815 TO3 PREGREASED MICA 56-03-2AP 32 6118 1/4W 22K 5%MINI T&R RES 1R 5% T&R 1 3846 TO220 THERMO PAD LARGE HOLE 56359B 8 4833 1/4W 27K 5% T&R RES 8ER 5% T&R 1 3580 12 CIR WAFER W/LCK VT 0.1" 1 4840 1/4W 33K 5% T&R RES 3R 5% T&R 4 3583 8 CIR WAFER W/LCK 0.1" 2 6122 1/4W 33K 5%MINI T&R RES 1

NS. T&R 14 4597 22AWG STRAN TC WIR 25 4834 1/4W 47K 5% T&R RES 1NS. T&R 14 4599 22AWG SOLID SC WIR T&R 114 6119 1/4W 47K 5%MINI T&R RES 4NS. T&R 3 5299 24AWG SOLID SC WIR RAD 40 4835 1/4W 56K 5% T&R RES 8S. T&R 2 4745 5.0W 0R1 5% BLK RES 12 4898 1/4W 91K 5% T&R RES 4NS T&R 2 4749 5.0W 0R15 5% BLK RES 4 4838 1/4W 100K 5% T&R RES 2NS T&R 2 4974 1.0W 0R47 5%FLAME PROOF T&R RES 2 6120 1/4W 100K 5%MINI T&R RES 2S. 3 4677 1/2W 1R 5% T&R RES 4 4851 1/4W 120K 5% T&R RES 2LINGTONT&R 2 4973 1.0W 1R 5%FLAME PROOF T&R RES 4 4886 1/4W 200K 5% T&R RES 1LINGTONT&R 1 4688 1/2W 2R2 5% T&R RES 3 4641 1/2W 220K 5% T&R RES 2LINGTON 1 4911 1/4W 2R2 5% T&R RES 8 4668 2.0W 220K 5%10MM BODY T&R RES 2LINGTON 2 4748 2.0W 3R9 5% BLK RES 2 4841 1/4W 220K 5% T&R RES 2NS 6 4733 5.0W 5R6 5% BLK RES 2 6126 1/4W 220K 5%MINI T&R RES 6NS. 6 4594 1/8W 10R0 2%FLAME PROOF T&R RES 2 4843 1/4W 470K 5% T&R RES 2N MOSFET 2 4605 1/8W 10R 5% T&R RES 1 4844 1/4W 1M 5% T&R RES 1OSFETT 2 4610 1/4W 10R 2%FLAME PROOF T&R RES 10 4948 1/4W 1M 5% .2"U T&R RES 1

NS. 16 4930 1/4W 10R 5% .2"U T&R RES 1 4951 1/4W 4M7 5% .2"U T&R RES 2NS PWR 2 4591 1/8W 22R1 1%FLAME PROOF T&R RES 2 6132 1/4W 8M2 5%MINI T&R RES 2NS PWR 2 4589 1/8W 33R 2%FLAME PROOF T&R RES 4 3699 RELAY 2C 01AMP DC48 ???MA PC-S 1NS. 16 4607 1/8W 39R 2%FLAME PROOF T&R RES 10 3735 RELAY 1A 16AMP DC48 011MA PC-C 1MP 5 4899 1/4W 39R 5% T&R RES 6 3604 21" 14C-28AWG DIP HDR CABLE .050" 1 T&R 2 6134 1/4W 47R 5%MINI T&R RES 2 3706 13" 8C-26AWG RIB 1 W/LCK HDR 0.1" 2

AC 200V 2 6200 1/4W 47R5 1%FLAME PROOF T&R RES 2 3740 15" 12C-26AWG RIB 1 W/LCK HDR 0.1" 1R 2 4811 1/4W 68R 5% T&R RES 2 8865 4-40 X 5/16 PAN PH MS SJ500 2

4 4593 1/8W 150R 2%FLAME PROOF T&R RES 4 8742 4-40 X 3/8 PAN PH TAPTITE JS500 2RE SENSOR 2 4859 1/4W 150R 5% T&R RES 2 8861 4-40 X 3/8 PAN PH MS SJ500 8R 2 4984 1/4W 150R 5%MINI T&R RES 2 8741 4-40 X 1/2 PAN PH MS JS500 11D CER.2"NPO 4 4909 1/4W 200R 5% T&R RES 6 8827 4-40 X 1/2 FLAT PH TAPTITE SJ500 6AD NPO 2 6201 1/4W 200R 1%FLAME PROOF T&R RES 6 8871 4-40 X 5/8 PAN PH MS SJ500 8D CER.2"NPO 1 4645 1/8W 220R0 1%FLAME PROOF T&R RES 4 8799 #6 X 1/4 PAN PH TYPE B JS500 2AD NPO 13 4857 1/4W 220R 5% T&R RES 6 8832 6-32 X 1/4 PAN PH TAPTITE SJ500 1

AD NPO 2 4977 1/4W 220R 5%MINI T&R RES 5 8801 6-32 X 3/8 PAN PH TAPTITE SJ500 4D CER.2"NPO 2 4606 1/8W 249R 2%FLAME PROOF T&R RES 8 8829 6-32 X 3/8 FLAT PH TAPTITE BO#4 HEA 18AD NPO 2 4867 1/4W 270R 5% T&R RES 2 8761 6-32 X 1/2 PAN PHIL MS ZINC CLEAR 64

AD CER.2"NPO 2 4986 1/4W 270R 5%MINI T&R RES 2 8806 6-32 X 1/2 PAN PH TAPTITE SJ500 2AD CER.2" YB 6 4855 1/4W 330R 5% T&R RES 2 8837 6-32 X 1/2 ROUND PH MS SJ500 1

ADIAL.2"FILM 2 4821 1/4W 470R 5% T&R RES 6 8824 8-32 X 5/16 PAN QUAD TAPTITE SJ500 3NLY RAD10MM 1 4980 1/4W 470R 5%MINI T&R RES 3 8869 8-18 X 1/2 THRD CUTTING FOR PLASTIC 4

OLYFILM BULK 2 4891 1/4W 620R 5% T&R RES 2 8999 8-32 X 5/8 PAN PH TAPTITE SJ500 17ADIAL.2"FILM 11 4873 1/4W 680R 5% T&R RES 1 8719 8-32 X 3/4 FILLISTER PHIL MS JS500 2RAD BLK15MM 2 4823 1/4W 1K 5% T&R RES 6 8815 8-32 X 3/4 PAN PH TAPTITE SJ500 5AD X7R 2 4934 1/4W 1K 5% .2"U T&R RES 2 8809 10-32 X 1/4 PAN PH TAPTITE SJ500 4DIAL.2"FILM 4 4981 1/4W 1K 5%MINI T&R RES 2 8749 10-32 X 1/2 QDX PH TAPTITE JS500 2DIAL.2"FILM 3 4854 1/4W 1K2 5% T&R RES 1 8731 10-16 X 5/8 TYPE B HEX W/SLOT JS500 12AD X7R 4 4824 1/4W 1K5 5% T&R RES 2 8736 5/16-18X2-3/4 GRD 5 HEX BOLT JS500 1DIAL.2"FILM 4 4988 1/4W 1K5 5%MINI T&R RES 4 8663 11/64 NYLON SPACER (MICRO PLASTIC) 66DIAL.2"FILM 2 4791 1/4W 1K54 1% T&T RES 4 8629 10-32 X 1/4 SPACER PHENOLIC 16

INSTRUCTIONS PERTAINING TO A RISKOF FIRE, ELECTRIC SHOCK,OR INJURY TO PERSONS.

CAUTION:TO REDUCE THE RISK OF ELECTRIC SHOCK, DO

NOT REMOVE COVER (OR BACK).NO USER SERVICEABLE PARTS INSIDE.

REFER SERVICING TO QUALIFIEDSERVICE PERSONNEL.

Read Instructions:The Owner's Manual should be read and understoodbefore operation of your unit. Please, save theseinstructions for future reference.

Packaging:Keep the box and packaging materials, in case the unitneeds to be returned for service.

Warning:When using electric products, basic precautions shouldalways be followed, including the following:

Power Sources:Your unit should be connected to a power source only of thevoltage specified in the owners manual or as marked on the unit.This unit has a polarized plug. Do not use with an extension cord orreceptacle unless the plug can be fully inserted. Precautions shouldbe taken so that the grounding scheme on the unit is not defeated.

Hazards:Do not place this product on an unstable cart, stand, tripod, bracket ortable. The product may fall, causing serious personal injury and seriousdamage to the product. Use only with cart, stand, tripod, bracket, or tablerecommended by the manufacturer or sold with the product. Follow themanufacturer's instructions when installing the product and use mountingaccessories recommended by the manufacturer.

The apparatus should not be exposed to dripping or splashingwater; no objects filled with liquids should be placed on theapparatus.

Terminals marked with the “lightning bolt” are hazardous live;the external wiring connected to these terminals require installationby an instructed person or the use of ready made leads or cords.

No naked flame sources, such as lighted candles, should be

INSTRUCTIONS RELATIVES AU RISQUEDE FEU, CHOC ÉLECTRIQUE, OUBLESSURES AUX PERSONNES.

AVIS: AFIN DE REDUIRE LES RISQUE DE CHOC ELECTRIQUE,

N'ENLEVEZ PAS LE COUVERT (OU LE PANNEAUARRIERE). NE CONTIENT AUCUNE PIECE REPARABLE

PAR L'UTILISATEUR.

CONSULTEZ UN TECHNICIEN QUALIFIEPOUR L'ENTRETIENT.

Veuillez lire le manuel:Il contient des informations qui devraient êtres comprises avantl'opération de votre appareil. Conservez S.V.P. ces instructionspour consultations ultérieures

Emballage:Conservez la boite au cas ou l'appareil devait êtreretourner pour réparation.

Warning:Attention: Lors de l'utilisation de produits électrique,assurez-vous d'adhérer à des précautions de basesincluant celle qui suivent:

Alimentation:L'appareil ne doit être branché qu'à une source d'alimentationcorrespondant au voltage spécifié dans le manuel ou tel qu'indiquésur l'appareil. Cet appareil est équipé d'une prise d'alimentationpolarisée. Ne pas utiliser cet appareil avec un cordon deraccordement à moins qu'il soit possible d'insérer complètement lestrois lames. Des précautions doivent êtres prises afin d'eviter que lesystème de mise à la terre de l'appareil ne soit désengagé.

Hazard:Ne pas placer cet appareil sur un chariot, un support, un trépied ou unetable instables. L'appareil pourrait tomber et blesser quelqu'un ou subir desdommages importants. Utiliser seulement un chariot, un support, un trépiedou une table recommandés par le fabricant ou vendus avec le produit.Suivre les instructions du fabricant pour installer l'appareil et utiliser lesaccessoires recommandés par le fabricant.

Il convient de ne pas placer sur l'appareil de sources de flammesnues, telles que des bougies allumées.

L'appeil ne doit pas être exposé à des égouttements d'eau ou deséclaboussures et qu'aucun objet rempli de liquide tel que des vases

IMPORTANT SAFETY INSTRUCTIONS YS # Description3570 14 PIN SCKT 641261/3 OR W5906 RED 3MM LED 1V9 20MA .45908 GRN 3MM LED 1V9 20MA .46405 RED 3MM LED 1V7 5MA B6408 GREEN 3MM LED 1V9 5MA6419 BRIDGE 35A 400V WIRE LE6425 BAV21 200V 0A25 DIODE 6438 1N4004 400V 1A0 DIODE T6825 1N4148 75V 0A45 DIODE T6934 MR854 400V 3A0 DIODE F6439 1N5225B 3V0 0W5 ZENE6440 1N750ARL 4V7 0W5 ZEN6461 1N5240BRL 10V0 0W5 ZEN6450 1N5242B 12V0 0W5 ZENE6822 1N4745A 16V0 1W0 ZENE6824 1N5246B 16V0 0W5 ZENE6432 1N5248B 18V0 0W5 ZENE6429 1N4747A 20V0 1W0 ZENE6465 1N5250B 20V0 0W5 ZENE6463 1N5251BRL 22V0 0W5 ZEN6433 1N5257B 33V0 0W5 ZENE5101 BC550C TO92 NPN TRA5102 BC560C TO92 PNP TRA5103 MPSA06 TO92 NPN TRA5108 2N5401 TO92 PNP TRAN5113 MPSA42 TO92 NPN TRA5114 MPSA92 TO92 PNP TRA6854 2N6517 TO92 NPN TRAN5105 MPSA13 TO92 NPN DAR5106 MPSA63 TO92 PNP DAR6814 MJF6668 221D- PNP DAR6815 MJF6388 221D- NPN DAR6873 MJE340 TO126 NPN TRA6874 MJE350 TO126 PNP TRA6752 MTP10N15L TO220 N CHA6925 MTP8P20 T220 P CHAN M6900 YS6900 (22) TO3 NPN TRA6989 MJL1302A T03P PNP TRA6990 MJL3281A T03P NPN TRA6927 YS6927 (23) TO3 PNP TRA6840 MC33078P IC DUAL OP A5190 MBS4992 TO92 8V5 DIAC6444 MAC224-4 TO220 40A TRI6859 NSL-28AA OPTO-COUPLE6880 4N35 OPTO-COUPLER6478 AS35FN-TO92 TEMPERATU6489 5R0 20% NTC THERMISTO5401 _10P 500V 5%CAP T&R RA5410 100P 100V 10%CAP T&R BE5197 220P 100V 2%CAP T&R RA5412 220P 100V 10%CAP T&R BE5417 330P 50V 10%CAP T&R BE5201 470P 100V 5%CAP T&R RA5416 470P 50V 10%CAP T&R BE5273 __1N5 200V 5%CAP T&R R5427 __2N2 500V 10%CAP T&R R5209 __4N7 250V 5%CAP T&R R6451 __4N7 250V 20%CAP AC Y O5834 _10N 250V 20%CAP RAD P5210 _22N 100V 10%CAP T&R R6435 _22N 275V 20%CAP AC X2 5308 _47N 50V 10%CAP T&R BE5226 _68N 100V 5%CAP T&R RA5228 100N 100V 5%CAP T&R RA5314 100N 50V 10%CAP T&R BE5229 150N 63V 10%CAP T&R RA5231 220N 63V 10%CAP T&R RA

placed on the apparatus. ne doit être placé sur l'appareil. 5882 220N 250V 10%CAP RAD POLYFILM BULK 4 4808 1/4W 2K 5% T&R RES 4 3746 21/64 X .250 OD #6 SPACER ALUMINUM 25255 __1U 63V 20%CAP T&R RADIAL ELE.2" 3 6113 1/4W 2K 5%MINI T&R RES 2 3751 SNAP IN 5/16 SPACER RICHCO 3

6 4847 1/4W 2K2 5% T&R RES 2 3739 CUSTOM .4 LED SPACER 62 4804 1/4W 3K 5% T&R RES 4 3743 SNAP ON 0.5" SPACER RICHCO 54 6124 1/4W 3K 5%MINI T&R RES 2 3859 1/2 PLASTIC HEX SPACER #4 22 6136 1/4W 3K3 5%MINI T&R RES 4 3858 3/4 PLASTIC HEX SPACER #4 410 4744 5.0W 3K6 5% BLK RES 8 8667 SHOULDER WASHER SWS-229 LENGTH 1/8 412 4756 1/4W 4K120 0.1% *** T&R RES 2 8818 3/4 OD X 5/16 ID X .08 THICK WASHER 23 4681 1.0W 4K7 5% T&R RES 2 3511 #6 FLAT WASHER NYLON 44 4827 1/4W 4K7 5% T&R RES 8 8491 #10 SPLIT LOCK WASHER BO 46 4943 1/4W 4K7 5% .2"U T&R RES 1 8850 #10 INT TOOTH LOCKWASHER BO 41 4982 1/4W 4K7 5%MINI T&R RES 5 3502 NYLON FLAT WASHER OD.158ID.110H.070 2

16 4887 1/4W 7K5 5% T&R RES 5 3436 DPDT PUSH SW PCMT H BREAK B4 MAKE 3

3587 DPDT ROKR SW QUIK 250" AC/PWR IEC65 13705 4P3T SLID SW PCMT H 11197 AP4040 T?RD 1

Power Cord:The AC supply cord should be routed so that it is unlikely that it willbe damaged. If the AC supply cord is damaged DO NOTOPERATE THE UNIT.

Service:The unit should be serviced only by qualified service personnel.

Les dispositifs marqués d'une symbole “d'éclair” sont des partiesdangereuses au toucher et que les câblages extérieurs connectés àces dispositifs de connection extérieure doivent être effectivés par unopérateur formé ou en utilisant des cordons déjà préparés.

Cordon d'alimentation:Évitez d'endommager le cordon d'alimentation. N'UTILISEZ PASL'APPAREIL si le cordon d'alimentation est endommagé.

Service:Consultez un technicien qualifié pour l'entretien de votre appareil.

SAFE_V4.doc Version 4.0 02/11/99 11:54 AM

5259 __4U7 63V 20%CAP T&R RADIAL ELE.2"5281 _10U 16V 20%CAP NONPOLAR T&R .2"5629 _10U 160V 20%CAP RADIAL ELECT BULK5945 _10U 63V 20%CAP T&R RADIAL ELECTR5260 _22U 50V 20%CAP T&R RADIAL ELE.2"5961 _33U 16V 20%CAP NONPOLAR T&R RAD5267 100U 25V 20%CAP T&R RADIAL ELE.2"5619 330U 100V 20%CAP RADIAL ELECT BULK5630 330U 25V 20%CAP RADIAL ELECT BULK5618 470U 25V 20%CAP RADIAL ELECT BULK5896 4700U 80V 20%CAP RADIAL ELECT BULK

550 Granite Court, Pickering, Ontartio CANADA L1W-3Y8

4625 Witmer Industrial Estate, Niagara Falls, New York USA 1430

SERVICE MANUAL

1

Yorkville Sound • http://www.yorkville.com SERVICE MANUALYorkville Sound • http://www.yorkville.com

YYoorrkkvviillllee AAPP44004400 PPoowweerr AAmmpplliiffiieerr

MM11112299 ““TTHHEE IINNPPUUTT BBOOAARRDD””The input board processes the audio signal from the input jacks to the volume controlboard, (M1128).

bl

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nt

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appear at LCLIP. These pulses turn on transistor Q6, and Q6to turn on clip LED LD6. The pulses also pass through R7 anC36. When the voltage across C3 reaches 0.5 volts then Q5 rent into the LED of the LD8 limiting the audio signal at U2. Tdischarging (release) times of the limiter are 80mS and 3.5 sResistors R50 and R7 provide the charging path, and resistocharge path. The limiter can be defeated by placing the limiteposition which disconnects Q5 and the charging / discharging

The activity LED circuit consists of Q1 and the surrounding circuitry. The audio sig-nal enters the activity LED circuit through R2. R2 and C21 form a differentiator thatturns Q1 on illuminating the activity LED whenever the audio signal increases in ampli-tude. A constant current flows through R55A, R55B and when Q1 is off, the collectorcurrent then flows through D1.

From M1128 the audio signal passes through a 12-conductor ribbon cable to circuitboard M1147.

On M1127 an operational amplifier U201 re-references the ground for the audio sig-nal from LREF or RREF to the corresponding LOG (left output ground) or ROG (rightoutput ground). U201 also provides DC correction for DC offsets appearing on the out-put binding posts. Feedback from the output binding posts appears on LFNB or RFNB.Through R203A or R203B the DC offset achieves a gain of -1 from U201. The DC off-set of opposite polarity on the output of U201 will compensate for the DC offset in theamplifier section on M1146 resulting in 0 volts DC on the output binding posts.

• The audio signal continues to M1146 via an 8-conductor ribbon cable.

MM11112266 ““TTHHEE VVOOLLTTAAGGEE AAMMPPLLIIFFIIEERR AANNDDCCUURRRREENNTT AAMMPPLLIIFFIIEERR””This board contains:

• a voltage amplifier section• a current amplifier section• amplifier current limit section• DC output protection• heatsink temperature sensing

Voltage Amplifier SectionThe voltage amplifier amplifies the audio signal’s voltage from 6.8 volts peak (at theoutput of U201) to approximately 98v peak, which is required to drive the currentamplifier section. The current amplifier provides the current required for the 98v peaksignal to drive 1200 watts into 4 ohms out of the binding posts.

Before the circuit is described in detail here is a quick rundown on the signal’s paththrough the voltage amplifier stage. Refer to the schematic of M1146. Let’s considerthat a positive going AC signal is present at the SIG input. The positive going signalwill turn on the positive side of the voltage amplifier. The signal at the SIG input turnson Q12A (through R40A, D14A and D13A). The collector of Q12A pulls down on thebase of Q14A turns this transistor on further and allows a greater current to flow out ofQ14A’s collector. This increase in current passes through Q15A and it’s collector toemitter voltage decreases. The collector of Q15A now being more positive in voltageturns the base of Q18A on causing an increase in Q18A’s collector current resulting intest point 1 going positive.

e subsonic filter, and a

and unbalanced inputerational amplifier, (U4).B) unbalanced. Resistorserference elimination filter.

onic filter. The subsonicists of a tee network on C34. The gain is 1 (0dB)

h the 14 conductor cable

and clip).

circuit are explained.)l P2 and the desired when the volume control

an opto-resistive cell in the LD8 becomesore of the audio signal ontracted from the signal on2. Transistors Q5 and Q6nd release time constantsp LED and the LED amplifier section (onon of the clipped portion

Each channel consists of a balanced gain stage, switchastereo / mono / bridge switch.

Looking at the left channel, the balanced input, (XLR Jack(phone jack) are wired in parallel to the input of a balanced The gain of this stage is 0.82 (-1.3dB) balanced and 1.6 (4.0R25, R27 along with capacitors C11 and C12 form a radio i

Switch S1 selects the cutoff frequency of the hi-pass subfilter provides a 20Hz or 40 Hz high pass filter. The filter cothe input of U3 along with R10, R28, C29 and C30, C33 anin the passband, (above 100Hz).

The audio signals from the input board M1129 pass throto board M1128.

MM11112288 ““VVOOLLUUMMEE CCOONNTTRROOLL BBOOAARRDD””This board contains:

• the front panel audio gain controls• the front panel indicating LED’s (power, protect, activi• the audio limiters

Circuit Explanation:• The left channel of the circuit is explained.(Refer to the schematic of M1128 as the sections of the

The audio signal out of M1129 passes through volume conlevel enters U2 through pin 6. U2 is set for a gain of 5 (14dis in the fully clockwise position.

The AP4040’s defeatable limiter is built around LD8. LD8comprising of an LED that shines on a photocell. As the LEbrighter, the resistance of the photocell decreases, placing pin 5 (non-inverting input) of U2. This audio voltage gets suthe inverting input and less signal appears on the output ofalong with the surrounding passive parts provide the attackof the limiting function along with the drive currents for the inside LD8. When an audio signal on the output of the powboard M1146) enters clipping, pulses representing the dura

5


4625 Witmer Industrial Estate, Niagara Falls, New York USA 14305 1

provides current pulsesd D6 to charge C3 andturns on providing a cur-he charging (attack) andeconds respectively.r R51 provides the dis-r switch (S2) in the in circuitry from V+.

As the positive side of the amplifier was turning on the negative side would havebeen turning off. This is how test point 1 was able to move positive following the inputsignal. The reverse would hold true if a negative going signal were present on the inputof the voltage amplifier.

550 Granite Cour

4625 Witmer Industria

SERVICE MANUAL

2

Yorkville Sound • http://www.yorkville.com

CIRCUIT DESCRIPTION:The voltage amplifier is a mirrored image with circuitry connected to the positive powersupply rail being identical (but opposite polarity) to the circuitry connected to the nega-tive power supply rail.

For this reason w

The audio signthrough R40A, Dthe DC bias on QThe first voltage lector and the em

Transistor Q12approximately 4 across Q14A remreference Q20A,age should equaits output currentthe collector driv

Diode D17A isnal from coming amplifier from goproblems.

Transistor Q18output of the bufR62A and is currD23A. The signaamplifier.

Current AmplifierThe current ampand provides the

The current amcomplimentary d

[CIRCUIT DES

SERVICE MANUALYorkville Sound • http://www.yorkville.com

QUIESCENT CONDITION:This design is class A/B and therefore the output driver transistors must be forwardbiased to provide low crossover distortion. In most class A/B designs, a diode chain orVBE multiplier is used to control the bias voltage and provide a means of adjusting thebias. This design is different, as there isn’t a diode chain or VBE multiplier. For simplici-ty lets consider only the positive side of the current amplifier, that is all parts betweenthe positive power supply rails and the audio signal output/input terminals. The nega-tive side is the same as the positive, except for polarity changes.

To bias Q14, greater than 0.5V is needed from base to emitter, (or for simplicity frombase to amplifier output). Points A and B are at the same potential, so consider themto be connected. If this is true then 0.5V from test point 2 to the amplifier output mustappear across R12. There must be some way of developing this voltage across R12,

e will look in detail at the positive side of the amplifier.

al enters the voltage amplifier at the SIG input. The signal passes14A and D13A to the base of Q12A. Diodes D13A and D14A set up12A to approximately 0.6 mA.

gain stage consists of Q12A along with the resistor chain on its col-itter resistor (R44A).

A drives the base of Q14A through the resistor chain. A DC current ofmA should flow through the collector of Q14A. The voltage dropains constant and is derived from the voltage drop across the voltage

resistor R58A, and the base/emitter junction of Q15A. This total volt-l approximately 3 VDC. Transistor Q14A is the second gain stage and flows through Q15A. Transistor Q15A is a common base stage withing the base of output buffer Q18A.

a clamping diode that prevents the maximum peak of the audio sig-within 4V of the 144 VDC rail. This is to prevent the output currenting into saturation during clipping and therefore having storage delay

A buffers the high impedance present on the collector of Q15A. Thefer provides a low output impedance at the junction of R61A andent limited to 30mA through the clamping action of D19A, D20A andl at the junction of R61A and R62A drives the succeeding current

Sectionlifier receives a high voltage audio signal from the voltage amplifier current drive necessary to drive speaker cabinets.

plifier is a two-tier complimentary output driver design controlled by aarlington stage.

CRIPTION - REFER TO THE SIMPLIFIED SCHEMATIC #1 ON THEFOLLOWING PAGE]

t, Pickering, Ontartio CA

l Estate, Niagara Falls, N



and there is using the darington (Q5 and Q40) driver along with local feedback.

Simplified schematic #1 shows the biasing circuit. The current needed to develop 0.5Vacross R12 comes from the emitter of Q5. When the amplifier is first turned on the currentsource (Q3) turns on Q5 and Q40) and current flows through R12 developing a voltage.When this voltage approaches 0.5V Q1 turns on and robs current from the base of Q40.

2

NADA L1W-3Y8

ew York USA 14305

3

Yorkville Sou SERVICE MANUAL Sound • http://www.yorkville.com

amount of time was spent on the current limit circuitry so that it may simulate the safeoperating area of the output transistors (SOAR curve). No matter how reactive the loadmay be the phase shift that it presents, along with it’s resistive component is used toset the output current limit of the output transistor stage.Refer to the schematic of board M1146 while reading the following text. The currentlimit circuitry is a mirrored image with circuitry connected to the positive power supplyrail being identical (but opposite polarity) to the circuitry connected to the negativepower supply rail. For this reason we will look at the positive side of the circuitry.

Transistor Q9 measures the peak current flowing through resistor R53. The voltageacross R53 (as a result of the current flowing through it) is scaled down by R55, R35,R35A, R36, R37, D7 and D11 these parts make up the safe operating area along withthe time constants of C30, R34, C12 and R26. Fig. #3 shows a waveform of the currentthat passes through R52 and R53 when the output of the amplifier is shorted to ground.This can only be seen by using an oscilloscope to measure differentially across R52and R53. The conditions of the measurement are contained on the diagram. During cur-rent limit when Q9 turns on it reduces the voltage across R42. R42 is in series with a16 volt zener (ZD7) and is also in parallel with the junction of Q8. The current that flowsthrough R20, ZD7, R42, and R22 normally saturates Q8. When Q9 reduces the voltageacross ZD9 and R42 to below 16.6 volts, Q8 turns off allowing a charge to build up onC8 through resistors R24 and R25. If current limiting occurs for a long enough durationto allow C8 to charge to 1.2 volts then Q7 will turn on tripping the relay circuit on boardM1147. As soon as the relay is tripped the audio signal will be turned off at the outputof the voltage amplifiers and will remain off for about 5 seconds before the relay turnson and allows the audio signal to pass through the amplifier. If a current limit conditionis still present then the whole cycle will occur again and repeat until the load conditionson the amplifier’s output are safe for the amplifier. When a safe load appears the ampli-fier will automatically reset and drive that load (the speaker cabinet).

DC ProtectionIf a DC voltage greater than 8 volts appears on the output of the amplifier for morethan 200 milliseconds then triac Q30 will turn on holding the output at ground poten-tial. MBS4992 is a device that turns on at either + or - 8 volts DC.

SERVICE MANUALnd • http://www.yorkville.com Yorkville

This causes Q40 to turn off until the reduced current flowing through Q5 maintains0.5V across R12. Q1 will turn off slightly causing Q5 and Q40 to increase their collectorcurrents. The circuit reaches a point of equilibrium with approximately 0.5V across R12.

Because all output devices are not identical and base emitter voltages vary, someadjustment must be available to slightly adjust the 0.5V across R12. This is accom-plished with RT1. RT1 causes Q1 to turn on slightly more or less resulting in Q5 andQ40 turning on slightly more or less and therefore R12’ s voltage will be slightly moreor less than 0.5v. The proper quiescent current voltage is 4mV (to be measuredbetween test points 8 and 9).

The Second Tier and Tier SwitchingRefer to the simplified schematic Fig. #1 while reading the following text. One way ofmaking an amplifier more efficient is to vary the Power Supply Voltage on the collec-tors of the output transistors (Q14 & Q22). The lower the voltage from collector to emit-ter, the lower the device dissipation. During quiescent conditions, there is 55VDC onthe collectors of output transistors Q14 and Q22. The peak AC voltage that can appearon the amplifier’s output is approximately 139V peak. How can an output transistordeliver a 139V peak when its collector is only at 78VDC? It can if its collector is pulledup to 144VDC as the output signal’s peak rises above 78VDC. Refer to Fig. #2. Thesecond tier voltage must remain above the amplifier’s output voltage by amount Vm.Therefore the circuitry controlling the second tier voltage must increase the tier voltagebefore the amplifier’s output voltage reaches 78VDC. This leading voltage is necessaryto compensate for time lag of the second tier circuit during fast rising amplifier output

signals.

The voltage between the amplifier’s outputand test point 4 is approximately 12VDCderived from the voltage drop across ZD4. Wecall this voltage the “floating battery” because itfloats on top of the output audio signal with testpoint 4 always being 12VDC greater than thepeak of the output signal. Test point 4 drives thegate of mos-fet Q11. Q11 controls the transis-tors of the upper tier. As Q11 turns on its sourceforward biases the base of Q13 and Q13 pullsthe collector of Q14 towards the 100 volt rail.The gate to source voltage needed to turn onQ11 is approximately 3.5 volts. When the peakoutput signal is about 69.5vp (78v-(12v-3.5v))then Q11 will start to turn on the second tier.The second tier voltage will remain about 13volts (Vm) above the peak of the output signal

to the point of clipping where this voltage is reduced to about 6 volts (measured dri-ving an 8 ohm load). Zener ZD8 protects the gate source junction of Q11 and also pro-vides a supply current path through R29 for the “floating battery”.

tio CANADA L1W-3Y8

alls, New York USA 14305



NOTE: The Power supply voltages given are those when the amplifier is not driving aspeaker load. This will allow yo to check the tier switching with the cover of the amplifi-er off and the amplifier, therefore, running cool.

Current Limit Protection CircuitryTo have an amplifier drive 3000 watts into practically any combination of speaker cabi-nets and know what is a safe load and what is not is a very difficult task. An extensive

550 Granite Court, Pickering, Ontar

4625 Witmer Industrial Estate, Niagara F

SERVICE MANUAL

4

Yorkville Sound • http://www.yorkville.com

NOTE: Every time you replace blown output transistors on a M1146 board test the DC protection triac with the following circuit.

through the M1126 board under test with no

st.

a

o

ia

associated drive circuitry have two possi

erating conditions.st been turned OFF/ON, or the amplifier is in

limit protecting the amplifier’s output transistors, or the amplifier has overheShutdown CircuitHere is how the circuit accomplishes these functions. The relay’s normally clostacts short the output of the voltage amplifiers to ground when the power switcWhen the power switch is turned on, the relay remains off (normally closed) fo6 seconds. C203 charges to 35V and results in Q203 turning off allowing Q201on. As Q201 turns on, it connects the negative terminal of the relay’s coil (Pin

SERVICE MANUALYorkville Sound • http://www.yorkville.com

If prolonged current limiting occurs on the amplifier’s output transistors then D204 orD205 (depending on which channel is current limiting) will be forward biased turning onQ202 (from its off state). Now +144VDC appears on the collector of Q202 and throughR210 and R211 turn on Q203 therefore turning off Q201 by shorting its base emitterjunction. Q201 turning off will turn the relay off and the normally closed contacts (offstate) will short the outputs of the voltage amplifiers to ground so as not to continuouslystress the amplifier’s output transistors. A cycle now occurs. With the voltage amplifiersnow disabled there is no signal driving the output transistors (Q13 to Q28).

The current limit circuit protecting the output transistors (Q13 to Q28) turns off andD204 and/or D205 are not forward biased and Q202 turns off. Through Q203 andQ201 the relay is turned back on and the voltage amplifiers are now active again, dri-ving the output transistors. If current limiting still occurs, then the same cycle will occur.If the cause of current limiting (low impedance or short on the speaker output termi-nals) has been removed, then the amplifier will continue to operate normally.

The third operation that the relay provides is “overheat shutdown”. If for some rea-son the fan cannot keep the heatsinks in a safe operating temperature area then thefan control circuit (on board M1147) will deliver through D207 a positive current to turnQ203 on and turn Q201 off to turn off the relay and disable the voltage amplifiers.When the fan has cooled down the temperature of the amplifier, then the signalthrough D207 will disappear and the relay circuit will turn on the relay to resume nor-mal operation. Anytime the relay is in the “protect” mode (due to the abnormal states)then contact pin 4 of the relay will illuminate LD3 (the protect LED on the front panel).

Soft Turn On CircuitTo reduce the “inrush” current that flows through the line cord from the 120 VAC powersource (typical with large linear power supplies), a circuit provides a soft turn on func-tion. When the power switch is turned on, the current that initially flows through the pri-mary of the transformer must flow through SG201 and SG202. These are surgestorsthat reduce the peak inrush current flow. After about 500 milliseconds a relay’s con-tacts short across the surgestors so that they are not stressed by the current flowingthrough them under normal operation. A circuit consisting of Q240, Q241, C215, andthe associated resistors provides the time delay for the turn on cycle of the relay. Thecircuit is very similar to the shutdown time delay circuit. Refer to the section on theshutdown circuit for a circuit description.

Fan CircuitLooking at the schematic to board M1147, here is aquick explanation of the fan control circuit. There isa temperature sensor (AS35) on each M1146board. When the amplifier is first turned on, Q207and Q208 are off. The AS35 temperature sensorsare configured as temperature controlled currentsources. As either temperature sensor begins to

load

to pro-, and

ct cycle.

in B)

ble

current

Conditions of test:

A) Pass a 100Hz 25v peak signal connected to the amplifier output.

B) Connect points 1 and 2 as showtect mode as the triac (if working) the amplifier goes into current limi

C) Disconnect the triac test circuit

D) Reverse connections 1 to 2 andshould be observed if the triac is w

Only test the trprolonged testing will he

MM11114477 SSHHUUTTDDOOWWNN CCIIRRCCaanndd SSOOFFTT TTUURRNN OONN CCIIRRCC

• The shutdown relay and itsoperating states.• Amplifier on under normal op• Amplifier power switch has ju

ated.

ed con-h is off.r about to turn

16) to



heat up, more current flows through D212 or D218increasing the voltage drop across R235 or R236.The hotter temperature sensor will provide morecurrent than the cooler sensor and therefore devel-op a higher voltage across it’s associated 8K2resistor. The higher voltage will forward bias D212or D218 reverse biasing the cooler temperature

sensor’s diode so that the hotter sensor will control the fan speed. At 40 degrees C there

4



ground energizing the relay and opening the normally closed contacts.

n in the diagram. The amplifier should go inhorted the output of the amplifier to ground

nd allow the amplifier to complete it’s prote

2 to 1 and test again. The same results asrking.

c for one protect cycle asat the triac to a high temperature.

UUIITT,, FFAANN CCOONNTTRROOLL CCIIRRCCUUIITT,,UUIITT::

464646465

Yorkville Sound • http AL

5


5


5

Yorkville Sound • http ALYorkYorkYorkYork
SERVICE MANUALSERVICE MANUALSERVICE MANUALSERVICE MANUAL://www.yorkville.com://www.yorkville.com://www.yorkville.com://www.yorkville.com
(AP4020: 36 dB, AP4040: 39 dB gain)Rejection: CMRR@60Hz: minimum 48dB, typical 56dBControls: Rotary GAIN controls, MONO/STEREO/BRIDGE,

FILTER and LIMITER switchesDisplays: 2x CLIP, 2x ACTIVITY, PROTECT, POWER ON (LEDS)

is 10 volts across R235 or R236 which is enough to turn on Q210, Q208, and Q207 pro-viding 7 DC volts to the fan. Further heating the temperature sensors results in a largerDC voltage across the fan. To lower the dissipation of Q207, D215, D216, ZD205, ZD206and R226 turn off Q207 and Q208 when the full wave rectified voltage present of the col-lector of Q207 reaches approximately 58V by robbing current from the base of Q208.The maximum fan voltage is 20.5 VDC. ZD207 and R228, R229 and R230 provide a cur-rent limiting function. Figure #4 shows the current through these resistors when there is12VDC across the fan.

Thermal Shutdown CircuitThe emitter of Q210 in the fan circuit is the measuring point for the shutdown voltage.As the temperature sensing devices (AS35) that control the fan circuit heat up the volt-age on the emitter of Q210 rises until at 85 degrees Celsius on the M1146 heatsinks.The voltage on the emitter of Q210 reaches 18 (85 degrees C) VDC and the amplifiermust be shutdown to protect the output power transistors. ZD202 and D207 becomeforward biased and Q203 turns on turning the relay off and muting the audio signal.After the amplifier cools down the voltage will decrease until Q37 turns off turning therelay back on enabling the amplifier.

IIddeennttiiffyyiinngg DDeeffeeccttiivvee BBooaarrddss iinn tthhee AAPP44004400STEP 1: VISUAL INSPECTION OF FRONT PANEL AND FAN

• Check to see whether the green power LED is lit. If not, the amplifier has apower supply (M1147 board), transformer, A.C. switch or line cord problem.• If the red protect LED stays on or samples off and on, this usually indicates aproblem with the voltage amplifier or current amplifier sections on one or both ofthe M1126 boards. Check for misaligned pin connections or see if the ribbon





















cables have been cut or pinched through their insulation.• If the fan is running at full speed at power up this usually indicates a problemwith the fan circuitry on the M1147 board, but it can also be caused by M1146 cir-cuit problems. A damaged AS35 temperature sensor located under the M1146heatsinks can cause erratic fan behavior.• No output on either or both channels could be caused by intermittent pushswitches on the input board.

STEP 2: VISUAL INSPECTION OF INTERNAL CHASSIS AND INITIAL TESTINGAfter removing the lid, look for any signs of smoke, charring or burnt components.Before powering up replace the burnt components, and check the associated circuitryfor damaged parts. Disconnect one M1127 board and test one board at a time toreduce the possibility of further damage. Use a variac to slowly increase the 120 VACup from 0 volts while monitoring the quiescent current with a meter and the speakeroutput with an oscilloscope. Watch the speaker output for large DC offsets, or oscilla-tion. Watch the meter for large collector currents flowing. Remember under quiescentconditions, there should only be 3 to 5 millivolts across test points 8 and 9 on the out-put stage of the amplifier.







SERVICE MANUSERVICE MANUSERVICE MANUSERVICE MANUville Sound • http://www.yorkville.comville Sound • http://www.yorkville.comville Sound • http://www.yorkville.comville Sound • http://www.yorkville.com

��SPECIFICATIONS

Frequency Response: +/- 1dB, 20 Hz to 20 KHzHum and Noise: -103 dB below max output RMS voltage, unweighted

THD (1 khz, 4–Ohms): <0.01%THD(20Hz – 20kHz, 4–Ohms): <0.1%

High Pass Filter: 40Hz, 12 dB/octaveSlew Rate: Power amp section: 25 V/uS, 50 V/uS in bridged mode

Damping Factor: > 600, 20 Hz - 20 KHz, into 8 ohmsCrosstalk: -75 dB below full output at 1khz, -60 dB below full output

(20 Hz - 20 KHz)Input Impedance: 20 KOhms balanced, 10 KOhms unbalancedInput Sensitivity: 1.4 VRMS sine wave









Input Connectors: 2x XLR, 2x 1/4” phone (TRS)Output Connectors: 2x Binding Post, 3x Speakon™ SP-4

Turn On/Off transients: < 15 milliwatt / seconds, 0.5 Wpk. (1s on delay)Power Consumption: Typ 1130, Max 1800 Watts

Transformer: ToroidalProtection: Fully protected: DC, LOAD and THERMAL

Cooling: Aluminum Heatsinks with DC servo–controlled fan (in front, out rear)Size: (DWH) 44 cm x 48 cm x 9 cm (front panel to binding posts)

(DWH) 17.5 in x 19 in x 3.5 inTwo rack spaces

Weight: 43.5 pounds, 19.8 Kilograms

SHEET OF SCH VERSION:

TITLE:

1

128

BOARD20/AP4040/AP2020

POT-BOARD

1.10

3V01N5225B

D3

A63Q2

220RR55B

A13Q1

3V01N5225B

D1

GREEN R_ACTIVITYLD2

GREEN L_ACTIVITYLD1

220RR55A

25

K3

PRTCT-18VGND+18VRCLIPLCLIP

DESCRIPTION OF CHANGE

NNNNNNNBETWEEN_14_PIN_CONNECTOR_&_RIBBONPC#5694_ADD_CONNECTIONS_FOR_BRPRTCTFIRST_PRODUCTION

20/AP4040/AP20208.SCH_DATABASE_HISTORY

RREF

LREF

LCLIPRCLIP

IG

LSPOST

LSP

ACT

L

GND

+18

+18

+18

-18

BRP

BRPRTCT

LSIGLREFRSIGRREF

ACT

LSPOST

YORKVILLE NAME: PCB#&VER:

MODELS: DATE:

M1

POT-AP40

M1128.SCH

APR/22/98

4148

D9

220RR53

470RR52

22u16vC36

220KR51

15KR49

BC560Q6

4K7R48

470RR47

REDL_CLIP LD6

BC560Q5

(4=V-,8=V+)

1/2

MC33078P

U2

2

31

15v 220pC38

4K12

R45

33u16VC26

10K

R44CW

GAIN

25A

10K

L_GAINP2

100PC18

20K0

R42

CW

GAIN

25A

10K

R_GAINP1

10K

R41

33u16VC25

4K12

R40

15v 220pC37

15K

R39

(4=V-,8=V+)

1/2

MC33078P

U2

6

57

BC560Q4

REDR_CLIP LD5

8M2R36

100PC17

20K0

R35

NSL28AALD8

470RR34

4K7R33

BC560Q3

15KR32

220KR31

4148

D6

22u16vC35

470RR30

220RR29

500mW4.7V

D2

15K

R50

NSL28AALD7

10K

R8

10K

R7

8MR

470KR4

470R

15v220nC22

15v220nC21

220p

C2

220p

C1

100K

R2

100K

R1

50V100n

C12725V

100n

C12625V

47n

C3

25V47n

C4

50V 330PC41

50V 330PC40

22K

R43

1K2R136

GRN

LD4

RED

LD3

10987654321# VER#DATEMODEL(S):-

DDDDDDD.APR/22/98OCT/97

VVVVVVV.1.101.00

AP40M112

22K

R46

RREF

LREF

LSPRE

RSPRE

RS

RSIG

OST

ACT

RSPOST

VGND

LVGND

LVGND

LVGND

LVGND

LVGND

LV

+18

+18+18

+18 +18

-18 -18

-18

-18

RTCT

(V+)-3v

14

78

1

VOLUME CONTROL/ LIMITER ACTIVITY LEDS CIRCUIT

LCLIP

RCLIP

LVGND

LIMABLE

PROTECT

POWER

C39

2

P1

-

10K

-

R_GAIN

LD7

59

126

C40330P

R4622K

4-PIN.SOCKET

C22

"P22"STYLE

C2516V33u

J14

- +

RSPOST

LSPOST

V+

LIMABLE

LREF

LSPRE

V-RSIG

POTP22

SCREW8870WASHER

3511PCB

0.4"

PT#3739

OARDS

02 USE PART

020 LEGEND" TO AID

2 -M1128VC

IFYING

ICKER OVER

USE PART 2 FOR NORTH

OTES

SPACER

LED

VCD

J13

R1361K2

J8J11

J6

R55A 220R

SPC

SPC1

J3

R55B 220R

SPC3

D6 4148

R2100K

P2

10K-

-

L_GAIN

J7 R1100K

C1 220p

C21220n

R5015K

J2

D13V0

LD2GRN

R_ACTIVITY

Q1

A13

#68

NSL-28AA

C3516v22u

Q3

BC560

C37 220p

R3915K

R3 470K

R4 470K

R5 8M2

R710K

R810K

R29220R

R30470R

R31220K

R3215KR334K7R34470R

R3520K0

R36 8M2

R40 4K12

R41 10K

R4220K0

R4410K

R454K12

R47470R

R484K7R4915K

R51220KR52470RR53220R

C2220p

C347n

C4 47N

C17100PC18 100P

100nC127100n

1110987654321# DESCRIPTION OF CHANGEVER#DATEMODEL(S):-

DDDDDD.DEC/09/98.APR/17/98OCT/97

VVVVVV.3.00.2.001.00

NNNNNNSCREWS_ADDEDPC#5736_TRACES_CHANGED_POT_SUPPORTCHANGED_FOR_PROTECT_CIRCUITPC#5664_RIBBON_CABLE_CONNECTIONSFIRST_PRODUCTION

AP-4020M1128.PCB_DATABASE_HISTORY

J9

J12

J1 1

220n

D24V7

J4

C2616V33u

D3 3V0

C39330P

Q2

A63

J10

LD8 #6859

NSL-28AA

C36

16v22u

Q4

BC560

Q5

BC560

Q6

BC560

C38220p

U2

33078P

D9 4148

R4322K

J5

LD3

RED

PROTECT

LD6

RED

L_CLIP

LD4

GRN

POWER

LD5

RED

R_CLIP

CONN3A

LD1

GRNL_ACTIVITY

LVGND

RREF

RREF

RSPRE

BRPRTCT

LSPOST

ACT

LCLP

RCLP

V+ LREF

V- RSIG

PRTCT

VER 3.00AP4020/4040

M1128

TO P.S. PCB

BLACK

VC2402 B

FOR VC24

THE AP-4 "M1128VC

2 P1 AND P

IN IDENT

3 ADD A ST #4394

#4390 AMERICAN1 P1 AND P

N

SHEET OF SCH VERSION:

TITLE:

1

9

/AP2020/AP4040

INPUT-BD

2.20

NRIN

NLIN

OUT

IN

GND_LIFT

S41

2

3

OUT

IN

S44

5

6

R

N

L

N

25V100n

C14

25V100n

C13

22nC116

DESCRIPTION OF CHANGE

NNNDELETE_R119SWITCH_FOR_BRPRTCT/LVGND-28PC#5694_ADD_CONNECTIONS_AT_BRIDGECHANGED_C27,C28,C29,C30_TO_150NAND_MADE_VALUE_CHANGES_FOR_AP2020REVERSED_INPUT_POLARITYFIRST_PRODUCTION

0.SCH_DATABASE_HISTORY

RREF

V+

V+

BRPRTCT

CHGND

CHGND

LSPRE

RSPRE

RSIG

V-

V-

LSPOST

LIMABLE

LREF

RSPOST

LVGND-28

LVGND AT THE INPUT JACKSRREF AND LREF CONNECT TOR

FROM_POT_PCB

1

14_PIN_CONNECTOR

68N16vC34

68N16vC33

68N16vC31

68N16vC32

33u16VC24

33u16VC23

OUT

IN

S16

4

5

OUT

IN

S13

1

2


MODELS:DATE:

M112

INPUTAP4020

M1129.SCH

SEP/06/2001

MC330781/2

(4=V-,8V+)

U4

6

57

MCOML R

.

TP2

TP1

TP4

TP3

OUT

IN

.

33KR6

UTRIX_XLR

JB3

13

2

UTRIX_XLR

JB4

13

2

MCOML R

S3

1 2 3 4

MCOML R

S3

5 6 7 8

MCOML R

MONO-STEREO-BRIDGES3

9 10 11 12

16v 150NC28

16v 150NC30

16v 150NC29

16v 150NC27

4148D7

4148D4

S R TIN_PH

O_GOLD

JB1 1

2

3

4

5

6

S R TIN_PH

O_GOLD

JB2 1

2

3

4

5

6

OUT

IN

S23

1

2

4M7R109A

4M7R109B

56KR10

56KR956K

R19

56KR28

1/2

MC33078

U1

2

31

1/2

MC33078

U4

2

31

(4=V-,8=V+)

1/2

MC33078P

U1

6

57

(4=V-,8=V+)

1/2

MC33078P

U3

6

57

(4=V-,8=V+)

1/2

MC33078P

U3

2

31

220pC7

220pC8

220pC10

220pC9

120K

R20

120K

R189K760

R12

9K760

R14

9K760

R15

1K54

R11

9K760

R16

1K54

R13

10987654321# VER#DATEMODEL(S):-

DDDSEP/06/01.APR/22/98DEC/02/97DNOV/12/97OCT/97

VVV2.20.2.102.00V2.001.00

AP402M1129

10K0

R37

10K0

R38

9K760

R26

9K760

R24

9K760

R23

1K54

R25

9K760

R22

1K54

R27

10R

R112

10R

R111

25V 100nC16

25V 100nC39

25V 100nC15

25V 100nC103

220p

C11

220p

C12

220p

C6

220p

C5

RREF

RREF

RREF

RREF

RREF

RREF

RREF

LVGND

LVGND

LVGND

V+

V+

BRPRTCT

LSPRE

RSPRE

RSIG

V-

V-

V-

LSPOST

LREF

LREF

LREF

LREF

LREF

LREF

LREF

RSPOST

LVGND-28

NOT USEDOF SWITCHTHIS SIDE

LIMITER

12Db/Oct

12Db/Oct

-1dB 6Hz

-1dB 40Hz

-1dB 6Hz

STEREO,MONO: RSIG = RSPOST

BRIDGED: RSIG = LSPOST

-1dB 40Hz

BALANCED INPUT FILTER

FILTER SWITCH

FILTER SWITCH

TO PIN 4 OF MC33078

TO PIN 4 OF MC33078

IGHT CHAN

LEFT CHAN

RREF

LIMABLE

LREF

V-V+

+V

V+

DISABLE

ENABLE

ASSEMBLY

VCD

J119

J40

J41

S1

FILTERPART#3436

EY1

J35

EY2

J50

TP4

J32

TP3

TP2

J43

R109A4M7

J38

R11110R

TP1

JB4

PART#3657FUNCTIONPART#

J36

C13

100NJ39

S3

FUNCTION

#3705

C116

22N275V

C23

16V33U

J23

C28

150N

C3168N

JB2

PART#3918

MC2

14-PIN.SOCKET

D4

4148

J34

TP3

JB3

PART#3657FUNCTIONPART# J42

R9

56K

R10 56K

R11

1K54

R12

9K760R13

1K54

R149K760

R159K760

R16

9K760

J13

R18

120K

R1956K

R20 120K R109B4M7

R229K760

R239K760

R249K760

R251K54

R26 9K760

R27 1K54

R28 56K

R37

10K0

R3810K0

C5220P

C6220P

C7

220PC8

220PC9

220P

C10

220P

C11220P

C12220P

C14 100N

R633K

C15

100nC16

100n

C24

16V33U

C29150N

J11

J9C3268N

C3368NC3468N

S2

LIMITERPART#3436

S4

GND_LIFTPART#3436

R11210R

C27150N

J10

D74148


DDSEP/06/01JUL/01/98.APR/16/98DEC/02/97DDNOV/97OCT/97

VV4.104.00.3.002.00VV2.001.00

NNPC#6436_REPLACE_R119_10K0->JUMPERISOLATE_PIN_OF_SWITCH_S3TO_BRIDGE_SWITCHPC#5694_PINS_10-12_OF_MC2_CONNECTEDCHANGE_C27_C28_C29_C30_TO_150NSWAP_INPUTS_TO_BE_NONINVERTINGRSPRE_WITH_LSPRE_AT_14PIN_CONNECTORSWITCH_RREF_WITH_LREF_ANDFIRST_PRODUCTION

AP4020/4040/2020/VX1200/2400/2402M1129.PCB_DATABASE_HISTORY

U1

33078

U3

33078

U4

33078 J37

J20

J19

J18

J27

J24

J26

J25

J22

J29

J30

J28

C39

100nJ16J17

J15

J33

C30150NJ12

V TR

J31

JB1

PART#3918 RSPOST

LREF

V-V-

LSPRELSPOSTLSPOSTLSPOST

RREF

LIMABLE

RSPRE

V+V+

RSIG

PCB MECH VER 4.10

AP2020/AP4020/AP4040

BRKT 1

M1129FROM POTS

LEFT

RIGHT

MONOSTEREO

BRIDGE

TO_PS

CHASSIS

ADD WIRES IN BOARD ASSEMBLYDO NOT STUFF J40 AND J41

2 FOR M1129B VX1200/2400/J/2402

1 FOR XLR #3657 USE SCREW PT#8829 UP THROUGH THE BOTTOM

PRODUCTION NOTES

P:\1129V41.PRN

1

SHEET OF


MODELS: SCH VERSION:

TITLE:

DATE: 1

M1146

.AP4040

M1146.SCH

SEP/18/2001

OUTPUT-BD

1.60

4700U80VC25

20R0:FP1%

R51

0R155W

R52

0R155W

R53

0R15W

R57

0R15W

R56

0R15W

R59

0R15W

R58

0R15W

R61

0R15W

R60

MR854

D15

MR854

D14

MR854

D13

MR854

D22

MR854

D21

MR854

D19

MR854

D18

MR854

D17

20R0:FP:1%

R55

MR854

D16

MT1

GMT2

MBS4992

Q29

MT1

MT2

GTRIAC_MAC224

Q30

16v

10uC21

33KR64

10R

R65

3R92W

R62

150v10n

C19BP1

BP2

MR854

D20

TP9

TP10

TP8

4uH

L1

5R65W

R63

4700U80VC22

4700U80VC23

4700U80VC24

YS6927

Q21

YS6900

Q20

YS6927

Q28

YS6900

Q18

YS6927

Q26

YS6900

Q16

0R15W

0R15W

YS6927

Q24

YS6900

Q14

YS6900

Q13

YS6900

Q19

YS6900

Q17

YS6900

Q15

YS6927

Q23

MR854

YS6927

Q25

MR854

YS6927

Q27

MR854

YS6927

Q22

MR854

MR854

MR854

3R92W

150v10n

2+

2-

1+1-

A/BRIDGED

SPEAKON

2+

2-

1+1-

B

SPEAKON

MR854

22K0.5W R69

22K0.5W R68

22K0.5W R66

22K0.5W R67

4700U80VC28

4700U80VC27

4700U80VC26

4700U80VC29

100R71

CLIP

NFB

TSENS

-145

-145

+78

+78

CLIM

PRTCT

GND

GND

-78

-78

+145

+145

SIG

TO POWER MODULE B

B- B+

OUTPUTS

BETWEEN TESTPOINTS 8 & 9ADJUST FOR 3 TO 5 MILLIVOLTSIDLE CURRENT

OUTPUTSOUTPUTS

M1146

U:\M1146V16.PRN

A

C

NCE

C

B4N35

U1

1

2

34

5

6

1N4004D304.7V

1N750

ZD10

220R

R80

A

C

NCE

C

B4N35

U2

1

2

34

5

6

1N4004D314.7V/500mW

1N750

ZD11220R

R81

2N216vC20A

D23A

D22A

4u710v

C26A

39RR58A

39RR63A

4U710VC25A

MJE340Q18A

MJE350Q19A

47RR62A

MJE350Q41

47RR61A

330u16vC29A MJE340

Q40

200R

R84

200R

R82

200RR83

220K

2WATT

R60A

2

10RR59A

4

10p200v

C23A

21K5:1%

R55A

D21A

D20A

D19A

MJE340Q16A

MJE350

Q15A

D18A

D17A

150RR57A

10RR65A

BC550

Q17A

BC560

Q14A

17K8:1%

R56A

3K

R43A

2KR53A

1K5R51A

4K7R50A

1K5R47A

4K7R46A

1KR45A

1KR44A

56KR42A

56KR38A

MPSA92Q13A

MPSA42Q12A

7K5R41A

7K5R39A

10p200v

C22A

D16A

D15A

D13A

D14A

220R

R40A

22u16v

C19A

22u16v

C18A

10u160V

C28A

10u160V

C27A

10RR66A

150RR64A MJL1302A

Q6

10KR70A

2

249R:1%R5

BC550Q1

BC550Q4

BC560Q2

BC560Q3

2R2R3

2R2R4

150RR7

150RR15

4K7R10

CW10K

LINRT1

1N

C2

470P

C4

12KR8

249R:1%

R9

249R:1%

R19

12KR16

39RR12

39RR14

MJL3281A

Q5

SG

D

N

MTP10N15LQ11

22RR11

27KR13

10K:1%R6

39RR1

249R:1%R17

10K:1%R18

22u10v

C3

22u10v

C51W16v

ZD9

16v1W

ZD8

68RR2

120v1n5

C1

91K

R36

27K

R370R47 1W

R85

27K

R38

91K

R39

BAV21

D11

BAV21

D10

270R

R34

270R

R50

5

P

S

G

D IRF9520Q12

12V500mWZD4

12V500mWZD5

330u16v

C6

330u16v

C7

200v 2n2C15

1K

R46

3K65W

R29

3K65W

R45

620R

R30

200v 4N7C9

6

100v 2N2C10

39R

R31

100v 470pC16

39R

R47

1KR35

D7

2BC550Q9

BC560Q10

2R2R27

2R2R41

D1

D2

D4

D3

470R

R26

470R

R43

16v 22nC12

16v 22nC13

3KR20

3KR22

7

4K7R42

BC550Q8

220KR25

220K

R24

1U10v

C8

4K7R23

D5

350V2N6517

Q7

2K2R21

330RR74

2KR73

20KR35A

39RR32

39RR48

1R0.5W

R28

1R0.5W

R44

120v 220nC11

120v 220nC14

20KR40B

16V500mWZD7

TP4

TP5

TP7

TP6

TP1

D9

18K

R70

3

3K3R68A

47K

R205

10u120v

BC550

Q20A

BC560Q21A

3K3R69A

10KR67A

39R

16v1W

1R1W

R49

1R1W

R33

1KR40

50V 22nC30

BC560

4K7

BC550

10U63VC32 33V

1N5257ZD13

4V71N750ZD12

220KR89

220KR88

1N

C18

1R0.5W

100R

R87

120v 220n

470R

R86220P

C17

33RR72A

33RR71A

16V

33uC31A

16V

33uC30A

MBS4992

NCMT1

MT2

MT1MT2G

MAC224BF871

B C E

BF872MJL1302AMJL3281A

ECB

BC550C

C B E

BC560C

VIEWBOTTOM

B E

YS6900YS6927

MJE340

E CB

MJE350MTP10N15LMTP23P06

SDG

4K7R72

E B C

2N65172N5551

E B C

2N5401

IN OUT

REF

AS35

8

3K65W

3K65W

INREF

OUTAS35Q31

1

2

3

2KR49A

50V 22nC31


DDSEP/18/01AUG/28/01OCT/12/00AUG/30/99JUL/12/99.AUG/26/98DEC/97

VV1.601.501.401.301.20.1.101.00

NNPC#6438_ADD_R88,R89_@_U1,U2PC#6429_ADD_C18,R87_@_Q40PC#6278_ADD_C17_R86_AT_Q41BRIDGED_SPKON_B->ASPKON_JACKS_ADDEDACROSS_R57A_AND_ACROSS_R64APC#5806_ADD_33u/16V_33R_IN_SERIESFIRST_PRODUCTION

AP4040M1146.SCH_DATABASE_HISTORY

K

CLIP

CLIP

+F15+F15

-F15-F15

-145

-145

+78

+78

+78

CLIMCLIM

GND

-78

-78

+145

+145

FP

FP

FP

FP

FP

FP

1.6 WATTS

16mA4 WATTS

75mA IDLE

1.6 WATTS

16mA

TO HEATSINK

ISOTHERMAL

4 WATTS

75mA IDLE

4v ACROSS R5

4v ACROSS R17

4v ACROSS R5

VCD

SOLDERSIDE M1146-8.10

B

A

BRIDGE

M1126

BLANK SIZE=14.750"X10.850"

M1146-8.10

2oz.COPPER

D

G

G

S

DRILL M1146-8.10

J33

D20A

4148

J23

D141

48

C21N

R610K0

J30

R71

100K

D941

48

C3

22U10V

TAB7

R87100R

16AWG

5.5"PUR

J21

R32R2

R42R2

D241

48

R15

150R

R10

4K7R7

150R

R35

1K

D341

48

R16

12K

R11

22R

R14

39R

R1327K

R812K

R19

249R

R5249R

R268RR3

7

27K R38

27K

R3991KR67 22K

0.5W

1

R51

220R0

R49

1R/1W

R30 62

0R

R31

39R

R47

39R

C32

10U

63V

C18 1N/400V

R27

2R2

R41

2R2

R26

470R

R20

3K

D11

BAV2

1

J11

TAB6

TAB4

R64

33K

R6510R

Q1

BC550

Q4BC550

Q2

BC560

Q3

BC560

Q9BC550

Q10

BC560

Q8

BC550

RT1

10K

VBE

C4470P

R63

5R6

5WATT

TAB3

#389

4

TAB1

G S

Q11

MTP10N15L

G S

Q12

MTP8P20

J16

R88

220K

ZD9

16V/

1W

ZD8

16V/

1W

C1

1N5

J6

C9

200V

4N7

C20A

2N2/500V

C16

470P

C12

22N

C13

22N

R35A

20K

WC7

16AWG7"YEL

TAB2

J3

Q16AMJE340

R29A

3K6

5WATT

R84200R

J29

R52

5WATT

0R15

R53

0R15

5WATT

R570R1

5WATT

R56

0R1

5WATT

R59

0R1

5WATT

R58

0R1

5WATT

R61

0R1

5WATT

R60

0R1

5WATT

R29

3K6

5WATT

R45

3K6

5WATT

Q22

YS6927.

R63A

39R

Q24YS6927

.

R66 22K0.5W

Q26

YS6927.

Q21

YS6927

.

Q28

YS6927

.

Q13

YS6900.

Q14

YS6900

.Q16

YS6900

.

Q18

YS6900

.

Q20

YS6900.

D441

48

Q23

YS6927.

Q27

YS6927.

D15MR854

D14MR854

D13MR854

R20547K

D21

MR85

4

D19MR854

D18MR854

D17

MR854

D16MR854

D22MR854

J22

R44

1/2W1R

ZD4

12V

D30

1N40

04

ZD12

4V7

C6 330U16V

C7

330U16V

Q7

2N6517C11

220N 250V

Q30

TRIAC

MAC224-4

DC_PROT

J9

R68A

3K3

R62

3R92WATT

D10BAV21

TP4

TP5

TP7

TP6

TP8

TP9

TP10

TP1

J20

R21

2K2


DDDDDDDDDDSEP/18/01

VVVVVVVVVV8.00

NNNNNNNNNNPC#6438_/ADD_R88,R89_@_U1,U2

AP4040M1146.PCB_DATABASE_HISTORY

ZD5

12V

D5

4148

R23

4K7

R24

220K

R25

220K

R42

4K7

R22

3K

ZD7

16V/

.5W

C26 #5896

80V

4700u

D741

48

C25

#5896

80V

4700u

Q41

MJE350

FUNCTION

Q6

.

.

MJL1302A

R18

10K0

Q40

MJE340

FUNCTION

R69A

3K3

C24

#5896

80V

4700u

C27

#5896

80V

4700u

R86470R

Q21A BC560

Q20A

BC550

1

MX1

CABL

E=#3

706

J2

R59A

10R

C2110U

16V

R85

R47/1W

R81

220R

R66A 10

R

WC6

C23

#5896

80V

4700u

VTR

R45A

1K

R72

1W4K7

C28

#589680V

4700u

R48

39R

C5

22U10V

R70A

10K

J15

Q15YS6900

.

Q17

YS6900

.

Q25

YS6927.

R42A

56K

TAB5

R65A

10R

J13

J24

Q19

YS6900

.

R89

220K

J18

J17

R82

200RQ29

MBS4992

L1

4uH

R331R

/1W

C14

220N 250V

22N

D20

MR85

4

R36

91K

ZD10

4V7

WC6

J10

EY3

J32

EY9

R70

18K

R67A

10K

Q5

.

.

MJL3281A

ZD11

4V7

R55

220R0

R28

1/2W1R

D15A 4148

R68 22K0.5W

ZD1333V R40B

20K

C30

22N

J14

EY2

R69 22K0.5W

R40

1K

C1910N250V

R50

270R

R43

470R

D17A

4148

C8

1U63V

EY5

D31

1N40

04

R80 220R

1

2

R32

39R

C29

#589680V

4700u

R39A7K5

R41A

7K5

R9249R

R38A

56K

R44A

1K

C25A

4U710V

R46A

4K7

R47A

1K5

R49A2K

R50A

4K7 R5

1A1K5

1

HOLD

ER=#

3676

R71A

33R

R43A

3K

R56A

17K8

C17220P/200V

R58A

39R

J12

R139R

R62A

47R5

U1

4N35

C18A

22U

16V

C19A

22U

16V

#389

4

Q15AMJE350

C26A

4U710V

C22

#5896

80V

4700u

R73

2K

R74

330R

Q31

AS35

D14A

4148

D13A

4148

R40A

220R

D16A

4148

D18A

4148

R46

1K

J1

D19A

4148

D23A

4148

D22A

4148

Q14A

BC560

Q17A

BC550

J4

R61A

47R5

C29A

330U16V

Q12A

MPSA42

Q13A

MPSA92

U2

4N35

R83 200R

R60A

220K2W

C27A10u160V

C28A

160V10u

Q18A

MJE340Q1

9A

MJE350C23A

500V 10P

C22A 500V

10P

TP5A

D21A

4148

J26

HS2

#389

4

HS1#3

894

EY8

EY7

EY4

1+

1-

2+

2-

JB2

..

.

EY6

C31

22N

R34270R

JZD3

R17

249RJ5

R57A 150R

C30A

33u16V

R72A33R

R53A

2K

C31A

33u16V

EY1

R45A

3K6

5WATT

J34

1+

1-

2+

2-

JB3

..

.

R12

39R

J19

R55A

21K5

R64A

150R

VTR

VTR

VTR

VTRVTR

VTR

VTR

VTR

VTR

VTR

VTR

VTR

VTR

VTR

VTR

C10

2N2/500V


AUG/28/01.OCT/12/00AUG/12/99JUL/08/99JAN/27/99.SEP/10/98JUL/45/98JUN/19/98FEB/12/98

7.00.6.005.004.003.00.2.001.021.011.00

PC#6429_ADD_R87,C18_AT_Q40PC#6083_REDO_GND_TRACKSPC#6278_ADD_R86-C17_AT_Q41CORRECT_ERROR_IN_SPKONSSPKON_JACKS_RE-CONFIGUREDPC#5908_U1,U2_4N35->TLP621R64A_C30A/R72A_C31A/R71APC#5806_ADD_33R_33u/16V_ACROSS_R57APC#5798_R72_4K7_1/2W->4K7_1WPC#5767_C10/C15/C20A_2N2_TO_PT#5427RENAMED_M1126A->M1146


C15

2N2/500V

GND

GND

R-R+

L+

L-

NFB

PRTCT

SIG

CLIP

TSENSE

CLIM

ASSEMBLY M1146-8.00

BLAN

K SI

ZE=1

4.75

0"X1

0.85

0"

PCBMECH M1146-8.00

FOR SERVICE BOARDSOR SPEAKON JACKSDO NOT STUFF WIRES

10

WITH FLAT SIDE UP AS SHOWN.Q31 IS HAND INSERTED AND BENT OVER9

T126 TYPE DEVICE

8

7

6

5

4

PRODUCTION NOTES

MOUNTING HARDWARE FOR Q11,Q12

3

USE #XXXX SMALL BODY 1R 1W



T264 DEVICE

#8741 4-40X 1/2" BOLT

BLUWHTBLKYELRED

FOR R33,R49

COOLED FROM WAVE SOLDER IS 6 INCH/LB

INITIAL TORQUE FOR TO-3’S IS 8 INCH/LB

MOUNTING DETAILS FOR 5W

MOUNTING DETAILS FOR Q30 TRIAC

16AWG16AWG

16AWG

16AWG16AWG

OUTPUT -OUTPUT +

TAB 7TAB 6TAB 5TAB 4TAB 3TAB 2TAB 1

TAB WIRE COLOURS

USE #8799 TO MOUNT TRIAC Q30

MOUNTING HARDWARE FOR TO3 OUTPUTS

TORQUE 4 INCH/LB

TORQUE 4 INCH/LB

TORQUE 4 INCH/LB

2

1

#8701 4-40 KEPS NUT

#8701 4-40 KEPS NUT

#8701 4-40 KEPS NUT

#3797 THERMO PAD

#3797 THERMO PAD

#8871 4-40X 1/2" BOLT

PCB

PCB

PCB

HEATSPREADER

HEATSPREADER

HEATSPREADER

HEATSPREADER

#3846 MICA

T-220 DEVICE

#8667 SHOULDER WASHER#3501 BELL WASHER

#3501 BELL WASHER

#3501 BELL WASHER

#8741 4-40X 1/2" BOLT

R29, R29A R45 AND R45A5 WATT RESISTORSADD #8629 SPACERS ONLY ON

32

1

AGAINST THE COPPER SURFACEMARKED 2 AND 3 ARE BENT FLATIT IS IMPERATIVE THAT LEGS BEND LEGS IN DIRECTION SHOWNDO NOT CUT LEGSAFTER MOUNTING DEVICEIMPORTANT

1/4"

OF TRANSISTORBEND DOWN 1/4" FROM BODY

FINAL TORQUE AFTER HEATSINK HAS

#8835 BOLT

#8663 SPACER

#3815 MICA

TO-3 TRANSISTOR

#8800 6-32 KEPS NUT

BOTH SIDES OF THE MICA PADMICA GREASE IS REQUIRED ON

4"

RED 13"

RED 2.5"

BLK 18"

BLK 3.5"

19"YELL

2.5"YELL

14"BLK

BLK

SPACERUSED AS A

THIS CAPS IS

JUMPERWIRE TOSOLDER

BLUE

M1146 AP-4040

HOLE

HOLE

MARCONI

MARCONIYEL

NOTE #6

-OUTPUT

+OUTPUT

VER:8.00

B

ABRIDGE

YEL

YEL

RED

BLK

BLK

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M1146AP-4040

M1146 2 oz. COPPER

+145V

+78V GND -78V-145V

P:\1146V80.PRN

50V220PC214B

50V220PC214A

DESCRIPTION OF CHANGEVER#TE(S):-

/02/99/21/99/17/98/15/98/97

VVVVV1.401.301.201.101.00

NNNNNCORRECT_ZD201_10V->20VUPDATE_XFMR_WIRE_COLOURSCORRECT_C+,C-_REL1PC#5798_ZD212->JUMPERFIRST_PRODUCTION


15K0.5W

R213

15K0.5W

R214

1K

R215

1K

R216

10K0

R203A

10K0

R201A

10K0

R202A

10K0

R204A

10K0

R204B

10K0

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10K0

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FP10R

R217

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R218

MJF6668

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MJF6388

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4148D202B

4148D202A

4148D201B

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2

31

33U16VC201A

33U16VC201B

16V

33UC202B

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33UC202A

SHEET OF

PCB#&VER:


TITLE:

1

M1147

.AP4040

POWER_SUPPLY/FAN

1.40

2 0.5W8

2R2 0.5WR229

2R2 0.5WR230

LVGND-78

-18

LREF

LNFB

ROSIG

LOSIG

LOG

LOG

RREF

+78

ROG

RNFB

+18

ATTSABOUT

ALL UNMARKED DIODES ARE 1N4148.ACTUAL PARTS MAY HAVE HIGHER VOLTAGE RATINGS.

NOTE: CAPACITOR VOLTAGE RATINGS SHOWN ARE MINIMUM REQUIRED.

1U63VC212

47KR242

WC14.

WC18

33KR240

1MR245

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WC11

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WC7

EY3

WC3

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EY8

WC4.

WC2

EY10

WC13

WC4

EY9

WC14

WC18.

WC10

WC6.

WC3.

EY7

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EY4

EY2

EY12

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40CFM

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22n

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C1

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C2

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CSA

C2E

680N

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LC 3

LC 4

LC 5

LC 6

LC 7

RC 5

RC 6

RC 7

RC 2

RC 3

RC 4

7K5R219

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22KR226

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1K5R209

1K5R208

4K7R207

10KR206

4U7 63VCC215

10987654321# DAMODEL

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22V500mWZD202

2N5401Q210

33v500mWZD205

33v500mWZD206

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330U80V

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BC550Q203

13AMP

BR23

4

1

2

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BR13

4

1

2

YSL#1197

120VAC

1KVA

TYPE_H

TR1

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2N5401Q202

7

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NO

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SG202

C+ C-

REL1

1 8

NC

COMNO

REL13

2

4

NC

COMNO

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7

5

WC2.

WC20

WC10.

8AMP

S

200KR238

YORKVILLE NAME:

DATE:

M1147.SCH

SEP/02/99

.

YSL#1197E

230/245VAC

1011VA

.

11

2RR22

27KR243

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R244

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SG201

RC 8LC 8

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Q211

A13Q212

4148

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1N4004

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1N4004

D223

1N4004

D2211N4004

D220

10V500mWZD213

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27KR250

47KR251

47KR252

10KR254

680R

R253

LVGND LVGND

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-145

PRTCT PRTCT

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GND

GND

GND

GND

GND

-18 -18

LREF

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RCLIP

LSIG

LNFB

ROSIGLOSIG

LOG

LOG

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+78

+78

+78

RDRV

RDRV

LDRV

LDRV

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+145

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ACT ACT

ACT

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+18

+18 +18

GRN/

YELL

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5 WBLUE

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RED

GREY

RED

HIGH CURRENT TO M1126

BOARDTO VOLUME

OVERHEAT SHUTDOWN

230V

245V

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230 VAC 50 Hz LINE

YELLOW

RED

GREY

120 VAC 60 Hz LINE

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WHITE

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BLACK

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RED

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GREY

DUMMY TABBROWN/BLACK LEAD TOBROWN LEAD TO WC10 AND

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TURN ON

RSIG

RNFB

GND

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RCLIM

LSIG

LNFB

GND

LTSENS

LPRTCT

LCLIM

245VAC INPUT VOLTAGE OPERATION230VAC INPUT VOLTAGE. FORTRANSFORMER SHOWN WIRED FOR

VCD


B

A

BRIDGE

M1126

BLANK SIZE=14.750"X10.850"

M1146-7.00

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D

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AUG/28/01.OCT/12/00AUG/12/99JUL/08/99JAN/27/99.SEP/10/98JUL/45/98JUN/19/98FEB/12/98

7.00.6.005.004.003.00.2.001.021.011.00

PC#6429_ADD_R87,C18_AT_Q40PC#6083_REDO_GND_TRACKSPC#6278_ADD_R86-C17_AT_Q41CORRECT_ERROR_IN_SPKONSSPKON_JACKS_RE-CONFIGUREDPC#5908_U1,U2_4N35->TLP621R64A_C30A/R72A_C31A/R71APC#5806_ADD_33R_33u/16V_ACROSS_R57APC#5798_R72_4K7_1/2W->4K7_1WPC#5767_C10/C15/C20A_2N2_TO_PT#5427RENAMED_M1126A->M1146


C15

2N2/500V

GND

GND

R-R+

L+

L-

NFB

PRTCT

SIG

CLIP

TSENSE

CLIM

ASSEMBLY M1146-7.00

BLAN

K SI

ZE=1

4.75

0"X1

0.85

0"

PCBMECH M1146-7.00

10


T126 TYPE DEVICE

8

7

6

5

4

PRODUCTION NOTES


3




T264 DEVICE

#8741 4-40X 1/2" BOLT

BLUWHTBLKYELRED

FOR R33,R49





16AWG16AWG

16AWG

16AWG16AWG

OUTPUT -OUTPUT +

TAB 7TAB 6TAB 5TAB 4TAB 3TAB 2TAB 1

TAB WIRE COLOURS



TORQUE 4 INCH/LB

TORQUE 4 INCH/LB

TORQUE 4 INCH/LB

2

1

#8701 4-40 KEPS NUT

#8701 4-40 KEPS NUT

#8701 4-40 KEPS NUT

#3797 THERMO PAD

#3797 THERMO PAD

#8871 4-40X 1/2" BOLT

PCB

PCB

PCB

HEATSPREADER

HEATSPREADER

HEATSPREADER

HEATSPREADER

#3846 MICA

T-220 DEVICE


#3501 BELL WASHER

#3501 BELL WASHER

#8741 4-40X 1/2" BOLT


32

1


1/4"



#8835 BOLT

#8663 SPACER

#3815 MICA

TO-3 TRANSISTOR

#8800 6-32 KEPS NUT


4"

RED 13"

RED 2.5"

BLK 18"

BLK 3.5"

19"YELL

2.5"YELL

14"BLK

BLK

SPACERUSED AS A

THIS CAPS IS

JUMPERWIRE TOSOLDER

BLUE

M1146 AP-4040

HOLE

HOLE

MARCONI

MARCONIYEL

NOTE #6

-OUTPUT

+OUTPUT

VER:7.00

B

ABRIDGE

YEL

YEL

RED

BLK

BLK

BLK

BLK

M1146AP-4040

M1146 2 oz. COPPER

+145V

+78V GND -78V-145V

P:\1146V70.PRN

www . y o r k v i l l e . c om

REAL Gear.

REAL People.

Yorkville Sound550 Granite CourtPickering, OntarioL1W-3Y8 CANADA

CanadaVoice: (905) 837-8481Fax: (905) 837-8746

Yorkville Sound Inc.4625 Witmer Industrial EstateNiagara Falls, New York14305 USA

U.S.A.Voice: (716) 297-2920Fax: (716) 297-3689


REAL Gear.

REAL People.


CanadaVoice: (905) 837-8481Fax: (905) 837-8746


U.S.A.Voice: (716) 297-2920Fax: (716) 297-3689

1 1

SERVICE BULLETIN SERVICE BULLETIN

Quick Fix for M1146 & M1126To speed up the servicing of the AP4020 or AP4040 on your bench, YorkvilleSound’s service department has developed a method to replace the compo-nents most likely to fail when a M1146 amplifier board requires service.

This Quick Fix kit contains the procedure, assembly drawings, and compo-nents to perform the Quick Fix to a M1146 or M1126 board.

It should be understood that the person using this procedure knows how totest resistors, diodes, and transistors to determine if they are defective. This pro-cedure is not intended to be a substitute for one’s lack of electronic capability.

Before starting, look at the board for repair and locate the version number.It is very important that you follow the procedure for the appropriate circuitboard version number.

A complimentary service manual for the AP4020 power amplifier is sup-plied with this M1146KIT.

STEP 1. Locate the assembly drawing for the version number printedon the M1146 or M1126 circuit board to be serviced.

STEP 2. Remove all of the transistors coloured RED on the assem-bly drawing.

STEP 3. Measure and remove any of the diodes coloured BLUE on theassembly drawing that may be damaged. Replace a 1N4732A 1W4V7 zener (#6459) ZD12 along with a series 0.5 ohm R85 resistor.

STEP 4. Rotate the trim pot RT1 fully counter - clockwise as in figure 1.Inspect and replace any resistors that look burnt. Measure all ofthe resistor values coloured YELLOW on the assembly drawing.The value that you measure may not be exactly what is shownon the assembly drawing but if the resistor doesn’t look dam-aged it should measure within + or – 5% of the printed value.

STEP 5. Measure the resistor coloured GREEN. The measured valueshould measure within + or – 5% value listed in the tablebelow. Replace any resistor that measured beyond the + or –5% value listed in the table below.

Figure 1

RESISTORNUMBER

R10

PRINTEDVALUE

4K7

CORRECTMEASURED VALUE

-5%3K08

3K25

+5%3K41

AP4020 &AP4040

AP4020 &AP4040

SERVICE BULLETIN SERVICE BULLETIN


REAL Gear.

REAL People.


CanadaVoice: (905) 837-8481Fax: (905) 837-8746


U.S.A.Voice: (716) 297-2920Fax: (716) 297-3689

2

STEP 6. Measure across the pair of test points shown in the componentlayout listed in the table below. If the measured value is notwithin + or – 10% of the value listed in the table then replacethe resistors shown in the table below.

STEP 7. Measure the resistors coloured ORANGE. Since the value ofthese resistors is 0.1 ohm, your ohmmeter will measure thehigher series resistance of the test leads if the resistor is OK. Ifthe resistor is damaged your ohmmeter will read a very highresistance (an open circuit). Replace any damaged resistors.

STEP 8. Measure the output TO–3 transistors (Q13 to Q28) to deter-mine if any are damaged. Mark any damaged transistors witha marking pen.

STEP 9. Replace any output transistors that you have marked as beingdamaged. Replace any diodes that you have found to be dam-aged. Replace all of the red transistors that were removed.

STEP 10. Inspect the traces on the circuit board for any that have ‘fused’open or looklike they got very hot. Bridge and solder a piece ofwire over any damaged traces.

TESTPOINTS

R10

LAYOUTREFERENCE

4K7

LAYOUTREFERENCE

R11, R12, R14

CORRECTMEASURED VALUE

-10%15ohm

17ohm

+10%19ohm

AP4020 &AP4040

AP4020 &AP4040

AFTER YOU HAVE REPLACED ALL OF THE NECESSARY COMPONENTS INSPECTTHE REPAIRED BOARD FOR ANY MISSING PARTS, CORRECT VALUES IN THE COR-

RECT POSITION AND THAT ALL COMPONENTS ARE SOLDERED.

Testing Repaired Circuit BoardsNow that you have rebuilt the M1146 or M1126 circuit board. It is just asimportant to properly power up the board. If the sinewave doesn’t look rightcheck the signal at test point (1) to ensure that the voltage amplifier isn’t dis-torting the signal. If there is still a damaged part on the board instantly turn-ing it on could blow up the board and you would be back where you started.

Connect the power wires and ground to the power supply. Connect a digi-tal multimeter to test pins 8 and 9 to measure the bias quiescent currentand place a scope probe on the speaker output. Be sure to turn the quies-cent current trimpot RT1 fully counter clockwise.

Now using a variac slowly turn up the AC main voltage while monitoringthe quiescent voltage and the speaker output trace on the scope. Watchingthese two test points is a good indicator of the health of the board. If youhave a second multimeter connect it up from the speaker output to testpoint 4 or 5. As you variac up also check these DC battery voltages toensure that they both increase in voltage to approximately +12 or –12 vdc.

If the board looks OK after variacing up to 120vac then slowly turn up thebias (RT1 trimpot) to obtain 3 to 5 millivolts of bias voltage on test points 8and 9. Check the speaker output with a 1KHZ sinewave with no load. If thislooks good place the minimum rated load (4 Ohm for M1126, 2 Ohm forM1146) on the speaker output and increase the sinewave amplitude to thepoint of clipping. If the signal looks free of oscillation, place a short acrossthe speaker posts. The amplifier should go into protect mode after 1/10 of asecond. Remove the short and the sinewave will appear 6 seconds later.

Reassemble the complete amplifier and run just clipping music or pinknoise into the minimum rated speaker load for that model of amplifier. Letthe amplifier heat up for 20 minutes. This will check the thermal mounting ofthe transistors and for any weak parts not caught during troubleshooting.

If the amplifier passes this test the product is ready to return to the customer.


REAL Gear.

REAL People.


CanadaVoice: (905) 837-8481Fax: (905) 837-8746


U.S.A.Voice: (716) 297-2920Fax: (716) 297-3689

2

D34148

4K7

4K7

220R

BC550

220R

200R

39R

200R

BC550

BC550

BC550

220R0

R52

5WATT

0R15

R530R1

5WATT

R59

0R15

5WATT

R58

0R1

5WATT

R61

0R1

5WATT

R60

0R1

5WATT

Q22

YS6927

.

Q24

YS6927

.

Q26

YS6927

.

Q28

YS6927

.

Q14

YS6900

.

Q16

YS6900

.

Q18

YS6900

.

Q20

YS6900

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249R

3K

2R2

1WATT1R

MR854

Q30

TRIAC

MAC224-4

4148

4148

4148

249R

Q41

MJE350

Q6

MJL1302A

Q40

MJE340

BC550

2N6517

22u/50V

50V

2R2

39R

3KQ5

MJL3281A

1WATT1R

4148

BC560

MPSA42

BC560

MPSA92

22u/50V

50V

1WATT0R47

BC550

220R0

MR854

150R

150R

22R1

4V7

16V/.5W

249R

BC560

BC560

200R

BC560

249R 4148

12V/.5W12V/.5W

MR854

BLANK SIZE=14.400"X7.700"

ASSEMBLY M1146-KITPCBMECH M1146-KIT

1N5242B1N5242B #6450#6450

M1146 KIT#6

854

#511

3

#511

4

#526

0

#526

0

#510

2

#510

2

#510

2

#510

2

#510

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#510

1

#510

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#510

1

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#510

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#510

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#6444 MAC224-4

#474

9 0R

15 5

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T

#474

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745

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TT

#474

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1 5

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#4

745

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#474

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1 5

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#6990MJL3281A

#6989MJL1302A

#6874#6873MJE350MJE340

#4974

#4973

#4607

#4607

#4645

#4645

#6201

#6201

#6201

#4911

#4911

#4804

#4804

#4973

#4977

#4977

#4982

#4982

#4591

#4593

#4593

#4606

#4606

#4606

#4606

#6440

#6824

#693

4

#693

4

#693

4

#6825

#6825

#6825

#6825

#6825

#6825

MR85

4

MR85

4

MR85

4

1N5246B-16V

1N750A-4V7

1N4148

1N4148

1N4148

1N4148

1N4148

1N4148

1/8WFP

1/8WFP

1/8WFP

1/8WFP

1/8WFP

1/8WFP

1/8WFP

1/8WFP

1/8WFP

1/4WFP

1/4WFP

1/4WFP

1/8WFP

1/8WFP

22R1

150R

150R

249R

249R

249R

249R

4K7

4K7

200R

200R

200R

0R47/1W

3K

3K

2R2

2R2

220R

220R

220R0

220R0

1/4W

1/4W

1/4W

1/4W

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1/4W

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39R

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C

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39RR63A

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MJE350Q19A

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Q40

200R

R84

200R

R82

200RR83

220K

2WAT

T

R60A

SHEET OF



TITLE:

DATE: 1

M1146

.AP4040

M1146.SCH

AUG/30/99

OUTPUT-BD

1.30

2

10RR59A

4

10p200v

C23A

21K5:1%

R55A

D21A

D20A

D19A

MJE340Q16A

MJE350

Q15A

D18A

D17A

150RR57A

10RR65A

BC550

Q17A

BC560

Q14A

17K8:1%

R56A

3K

R43A

2KR53A

1K5R51A

4K7R50A

1K5R47A

4K7R46A

1KR45A

1KR44A

56KR42A

56KR38A

MPSA92Q13A

MPSA42Q12A

7K5R41A

7K5R39A

10p200v

C22A

D16A

D15A

D13A

D14A

220R

R40A

22u16v

C19A

22u16v

C18A

10u160V

C28A

10u160V

C27A

10RR66A

150RR64A MJL1302A

Q6

10KR70A

4700U80VC25

220R0:FP1%

R51

249R:1%R5

BC550Q1

BC550Q4

BC560Q2

BC560Q3

2R2R3

2R2R4

150RR7

150RR15

4K7R10

CW10K

LINRT1

1N

C2

470P

C4

12KR8

249R:1%

R9

249R:1%

R19

12KR16

39RR12

39RR14

MJL3281A

Q5

SG

D

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MTP10N15LQ11

22RR11

27KR13

10K:1%R6

39RR1

249R:1%R17

10K:1%R18

22u10v

C3

22u10v

C51W16v

ZD9

16v1W

ZD8

68RR2

120v1n5

C1

91K

R36

27K

R370R47 1W

R85

27K

R38

91K

R39 0R155W

R52

0R155W

R53

0R15W

R57

0R15W

R56

0R15W

R59

0R15W

R58

0R15W

R61

0R15W

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BAV2

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BAV2

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270R

R34

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MR854

D14

MR854

D13

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D22

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12V500mWZD5

330u16v

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330u16v

C7

200v 2n2C15

1K

R46

3K65W

R29

3K65W

R45

620R

R30

200v 4N7C9

MR854

D21

6

100v 2N2C10

39R

R31

100v 470pC16

39R

R47

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D19

MR854

D18

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MT2

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16v

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10R

R65

39RR32

39RR48

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R28

1R0.5W

R44

120v 220nC11

120v 220nC14

20KR40B

3R92W

R62

150v10n

C19BP1

BP2

16V500mWZD7

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D20

TP4

TP5

TP7

TP6

TP9

TP10

TP1

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TP8

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R63

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3K3R68A

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0

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4700U80VC23

4700U80VC24

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Q21

YS6900

Q20

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Q28

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Q18

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Q26

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Q16

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Q24

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Q14

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Q13

YS6900

Q19

YS6900

Q17

YS6900

Q15

YS6927

Q23

MR854

YS6927

Q25

MR854

YS6927

Q27

MR854

YS6927

Q22

MR854

1KR40

MR854

MR854

50V 22nC30

BC560

4K7

BC550

10U63VC32 33V

1N5257ZD13

4V71N750ZD12

1R0.5W

120v 220n

3R92W

150v10n

2+

2-

1+1-

A/BRIDGED

SPEAKON

2+

2-

1+1-

B

SPEAKON

MR854

33RR72A

33RR71A

16V

33uC31A

16V

33uC30A

MBS4992

NCMT1

MT2

MT1MT2G

MAC224BF871

B C E

BF872MJL1302AMJL3281A

ECB

22K0.5W R69

22K0.5W R68

22K0.5W R66

22K0.5W R67

BC550C

C B E

BC560C

VIEWBOTTOM

B E

YS6900YS6927

MJE340

E CB

MJE350MTP10N15LMTP23P06

SDG

4K7R72

E B C

2N65172N5551

E B C

2N5401

IN OUT

REF

AS35

8

3K65W

3K65W

4700U80VC28

4700U80VC27

4700U80VC26

INREF

OUTAS35Q31

1

2

3

4700U80VC29

2KR49A

50V 22nC31


DDDDDAUG/30/99JUL/12/99.AUG/26/98DEC/97

VVVVV1.301.20.1.101.00

NNNNNBRIDGED_SPKON_B->ASPKON_JACKS_ADDEDACROSS_R57A_AND_ACROSS_R64APC#5806_ADD_33u/16V_33R_IN_SERIESFIRST_PRODUCTION


100KR71

CLIP

CLIPCLIP

+F15+F15

NFB

-F15-F15

TSENS

-145

-145

-145

-145

+78

+78

+78

+78

+78

CLIM

CLIMCLIM

PRTCT

GND

GND

GND

-78

-78

-78

-78

+145

+145

+145

+145

SIG

TO POWER MODULE B

FP

FP

FP

FP

FP

FP

1.6 WATTS

16mA4 WATTS

75mA IDLE

1.6 WATTS

16mA

TO HEATSINK

ISOTHERMAL

4 WATTS

75mA IDLE

B- B+

OUTPUTS

BETWEEN TESTPOINTS 8 & 9ADJUST FOR 3 TO 5 MILLIVOLTSIDLE CURRENT

4v ACROSS R5

OUTPUTS

4v ACROSS R17

4v ACROSS R5

OUTPUTS

M1146

James J Belardo

VOLTAGE AMP

James J Belardo

CURRENT AMP

James J Belardo

SPEAKER PROTECTION

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James Belardo

James Belardo

James Belardo

A

James Belardo

P MOURTOS

M1146kit Version 1.0

VCD


B

A

BRIDGE

M1126

BLANK SIZE=14.750"X10.850"

M1146-5.00

2oz.COPPER

D

G

G

S

DRILL M1146-5.00

J33

D20A

4148

J23

D141

48

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R610K0

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J32

16AWG

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R7150R

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TAB4

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33K

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Q4BC550

Q2

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Q3

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Q9BC550

Q10

BC560

Q8

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RT1

10K

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TAB3

#3894

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Q21

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Q28

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Q20

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Q27

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D14MR854

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D19MR854

D18MR854

D17

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D16MR854

D22MR854

J22

R44

1/2W1R

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ZD12

4V7

C6 330U16V

C7

330U16V

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2N6517C11

220N 250V

Q30

TRIAC

MAC224-4

DC_PROT

J9

R68A

3K3

R62

3R92WATT

D10BAV21

TP4

TP5

TP7

TP6

TP8

TP9

TP10

TP1

J20

R21

2K2

ZD5

12V

D5

4148

R23

4K7

R24

220K

R25

220K

R42

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R22

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16V/.5W

C26 #5896

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FUNCTION

Q6

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MJL1302A

R18

10K0

Q40

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FUNCTION

R69A

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C27

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Q21A BC560

Q20A

BC550

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16V

R85

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R45A

1K

R72

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C28

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22U10V

R70A

10K

J15

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Q17

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Q25

YS6927.

R42A

56K

TAB5

R65A

10R

J13

J24

Q19

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D30

1N4004

J18

J17

R82

200RQ29

MBS4992

L1

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R331R

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C14

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D20

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91K

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R55

220R0

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D15A 4148

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ZD1333V

R40B20K

C30

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J14

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R69 22K0.5W

R40

1K

C1910N250V

R50

270R

R43

470R

D17A

4148

C8

1U63V

EY5

D31

1N4004

R80 220R

1

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R32

39R

C29

#589680V

4700u

R39A7K5

R41A

7K5

R9249R

R38A

56K

R44A

1K

C25A

4U710V

R46A

4K7

R47A

1K5

R49A2K

R50A

4K7 R5

1A1K5

1

HOLDER=#3676

R71A

33R

R43A

3K

R56A

17K8

R58A

39R

J12

R139R

R62A

47R5

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4N35

C18A

22U

16V

C19A

22U

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#3894

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C26A

4U710V

C22

#5896

80V

4700u

R73

2K

R74

330R

Q31

AS35

D14A

4148

D13A

4148

R40A

220R

D16A

4148

D18A

4148

R46

1K

J1

D19A

4148

D23A

4148

D22A

4148

Q14A

BC560

Q17A

BC550

J4

R61A

47R

C29A

330U16V

Q12A

MPSA42

Q13A

MPSA92

U2

4N35

R83 200R

R60A

220K2W

C27A10u160V

C28A

160V10u

Q18A

MJE340

Q19A

MJE350C23A500V 10P

C22A 500V

10P

TP5AD2

1A41

48

J26

HS2

#3894

HS1#3

894

EY8

EY7

EY4

1+

1-

2+

2-

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..

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EY6

C31

22N

R34270R

JZD3

R17

249RJ5

R57A 150R

C30A

33u16V

R72A33R

R53A

2K

C31A

33u16V

EY1

R45A

3K6

5WAT

T

J34

1+

1-

2+

2-

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..

.

R12

39R

J19

R55A

21K5

R64A

150R

VTR

VTR

VTR

VTRVTR

VTR

VTR

VTR

VTR

VTR

VTR

VTR

VTR

VTR

VTR

C10

2N2/500V


DDDAUG/12/99JUL/08/99JAN/27/99.SEP/10/98JUL/45/98JUN/19/98FEB/12/98

VVV5.004.003.00.2.001.021.011.00

NNNCORRECT_ERROR_IN_SPKONSSPKON_JACKS_RE-CONFIGUREDPC#5908_U1,U2_4N35->TLP621R64A_C30A/R72A_C31A/R71APC#5806_ADD_33R_33u/16V_ACROSS_R57APC#5798_R72_4K7_1/2W->4K7_1WPC#5767_C10/C15/C20A_2N2_TO_PT#5427RENAMED_M1126A->M1146


C15

2N2/500V

GND

GND

R-R+

L+

L-

NFB

PRTCT

SIG

CLIP

TSENSE

CLIM

ASSEMBLY M1146-5.00

BLANK SIZE=14.750"X10.850"

PCBMECH M1146-5.00

10


T126 TYPE DEVICE

8

7

6

5

4

PRODUCTION NOTES


3




T264 DEVICE

#8741 4-40X 1/2" BOLT

WHTBLKYELRED

FOR R33,R49





16AWG

16AWG

16AWG16AWG

TAB 4TAB 3TAB 2TAB 1

TAB WIRE COLOURS



TORQUE 4 INCH/LB

TORQUE 4 INCH/LB

TORQUE 4 INCH/LB

2

1

#8701 4-40 KEPS NUT

#8701 4-40 KEPS NUT

#8701 4-40 KEPS NUT

#3797 THERMO PAD

#3797 THERMO PAD

#8871 4-40X 1/2" BOLT

PCB

PCB

PCB

HEATSPREADER

HEATSPREADER

HEATSPREADER

HEATSPREADER

#3846 MICA

T-220 DEVICE


#3501 BELL WASHER

#3501 BELL WASHER

#8741 4-40X 1/2" BOLT


32

1


1/4"



#8835 BOLT

#8663 SPACER

#3815 MICA

TO-3 TRANSISTOR

#8800 6-32 KEPS NUT


BLK 18"

BLK 3.5"

RED 2"

RED 13"

19"YELL

2.5"YELL

2.5"

14"BLK

BLK

SPACERUSED AS A

THIS CAPS IS

JUMPERWIRE TOSOLDER

BLUE

M1146 AP-4040

HOLE

HOLE

MARCONI

MARCONIYEL

NOTE #6

-OU

TPUT

+OUTPUT

VER:5.00

B

ABRIDGE

YEL

YEL

RED

BLK

BLK

BLK

BLK

M1146AP-4040

M1146 2 oz. COPPER

+145V

+78V GND -78V-145V

P:1146V50.PRN

James J Belardo

3. TEST THIS ROW THIRD

James J Belardo

1. TEST THIS ROW FIRST

James Belardo

2. TEST THIS ROW SECOND

James Belardo

3. TEST THIS ROW FOURTH

James Belardo

James Belardo

James Belardo

James Belardo

James Belardo

James Belardo

James Belardo

James Belardo

James Belardo

James Belardo

James Belardo

James Belardo

James Belardo

James Belardo

James Belardo

James Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James J Belardo

James Belardo

CHECK

James Belardo

CHECK

James Belardo

CHECK

James Belardo

CHECK

James Belardo

CHECK

James Belardo

CHECK

James Belardo

CHECK

James Belardo

CHECK

James Belardo

CHECK

James Belardo

CHECK

James Belardo

CHECK

James Belardo

CHECK

James Belardo

CHECK

James Belardo

CHECK

James Belardo

CHECK

James Belardo

CHECK

James Belardo

James Belardo

James Belardo

A

James Belardo

James Belardo

James Belardo

P MOURTOS

M1146kit Version 1.0

M1147-2.00

11

1

RED

RED

GREY

GREY

VER 2.00AP4040M1147

AP4040CE AC WIRING JAN,26,99

#1197E

680n

NL

4"

17"

17"

15"

17"

SHOWN WIRED FOR 230V

M1147-2.00

11

1

RED

RED

GREY

GREY

VER 2.00AP4040M1147

AP4040CE AC WIRING JAN,26,99

#1197E

680n

NL

4"

17"

17"

15"

17"

SHO WN WIR ED F OR 245V

Documents

ys logo - Acoustic · PDF fileManual-Servive-ap4040-2v9.pdf v.2.9 6/2002 SERVICE MANUAL 1. Parts List 2. ... • M1146 PCB layout 5v5 4. Service Kit • M1146 5. Power Amp Module AP4040