WorkingPro 12 amp SM

WorkingPro 12®™ (This is the model name for warranty claims)

Fender Musical Instruments Corporation / 8860 East Chaparral Road, Suite 100 / Scottsdale, AZ 85250 Issued: October, 2005

p/n 4452200010 (120V)

SERVICE MANUAL

CONTENTS: Notices ........................................... 2 Specifications................................. 3 Service Notes................................. 4 Circuit Description.......................... 5 Parts Lists: Main PCB Assembly................ 7 I/O PCB Assembly................... 9 Pwr Amp PCB Assembly....... 10 Chassis Assembly ................. 12 End Item Assembly................ 13 Service Diagram List ................... 13


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IMPORTANT NOTICE

• Copyright © 2005 FMIC. All rights reserved. All information contained herein is CONFIDENTIAL and PROPRIETARY and is the property of Fender® Musical Instruments Corporation. It is not to be sold or assigned to another party and is disclosed solely for use by Fender Authorized Service Centers for purposes of product service and maintenance. All information is not to be dis-closed to others without the expressed permission of Fender® Musical Instruments Corporation. All

specifications are subject to change without no-tice. This information and any copies produced electronically or otherwise must be surrendered upon demand of Fender® Musical Instruments Corporation.

• Parts marked with two asterisks (**) indicate the required use of that specific part. This is neces-sary for RELIABILITY and SAFETY requirements. DO NOT USE A SUBSTITUTE!

PARTS LIST CODES

The description codes used in the itemized Parts Lists are defined below:

CAPACITOR CODES CAP AE = Aluminum Electrolytic CAP CA = Ceramic Axial CAP CD = Ceramic Disk CAP CR = Ceramic Radial CAP MPF = Metalized Polyester Film CAP MY = Mylar CAP PFF = Polyester Film/Foil RESISTOR CODES RES CC = Carbon Comp RES CF = Carbon Film RES FP = Flame Proof RES MF = Metal Film RES MOX = Metal Oxide RES WW = Wire Wound

HARDWARE CODES BLX = Black Oxide CR = Chrome Plated HWH = Hex Washer Head M = Machine Screw NI = Nickel Plated OHP = Oval Head Phillips PB = Particle Board PHP = Pan Head Phillips PHPS = Pan Head Phillips Sems SMA = Sheet Metal "A" Point SMB = Sheet Metal "B" Point SS = Stainless Steel TF = Thread Forming ZI = Zinc Plated


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SPECIFICATIONS MODEL: WorkingPro™ 12 PART NUMBERS: 4452000010 (120V, 60Hz) DOM 4452206010 (230V, 50Hz) EUR 4452204010 (230V, 50Hz) UK 4452203010 (240V, 50Hz) AUS 4452207010 (100V, 50/60Hz) JPN POWER REQUIREMENT: 650 W POWER AMP MINIMUM IMPEDANCE: 4Ω POWER OUTPUT: 200W RMS into 4@ < 0.1% THD, 1kHz PRE AMP INPUT IMPEDANCE: 3.9M SENSITIVITY AT FULL POWER: 15mV TONE CONTROLS– BASS: ±15dB @ 100Hz MIDRANGE: ±15dB @ 800Hz TREBLE: ±15dB @ 2kHz EFFECTS LOOP– SEND IMPEDANCE: 1.5k RETURN IMPEDANCE: 27k UNBALANCED LINE OUT– SEND IMPEDANCE: 1.5k BALANCED LINE OUT– SEND IMPEDANCE: 1.5k FOOTSWITCH (OPTIONAL): 2-button, Mute, Bass Intensifier (P/N 065436) LINE FUSE– 100V MODELS: T8A, 250V 120V MODELS: T6A, 250V 230V-240V MODELS: T3.15A, 20mmx5mm 250V SPEAKERS- 1 Eminence® 12'' 4Ω (071300) DIMENSIONS– HEIGHT: 22.5 in (63.5 cm) WIDTH: 18.5 in (57.5 cm) DEPTH: 18.5 in (44 cm) WEIGHT: 44 lb (20 kg)

Product specifications are subject to change without notice.


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SERVICE NOTES

1. CHASSIS REMOVAL is accomplished by re-moving 6 finish screws from the top & sides of the cabinet. Unplug the 1/4" speaker plug from the rear panel jack. Slide chassis towards rear of cabinet. Before completely removing the chassis, unplug the 3-pin monitor cable from the header on the main PCB. Cut any wire ties securing the monitor cable. The chassis is now free to remove from the back of the cabinet.

2. MAIN PCB REMOVAL is accomplished by dis-connecting the three cable assemblies from the PCB Assembly. Disconnect the power LED from the chassis by either working the LED loose from the chassis adhesive, or un-soldering the leads from the board. Remove

the knobs, nuts, & washers from the 8 front panel controls. Remove the nut & washer from the input jack.

3. I/O PCB REMOVAL is accomplished by remov-ing the following items: two screws at the XLR jack, 6 nuts & washers at the 1/4" jacks, 3 standoff screws behind the DIN jack. Discon-nect the two cable assemblies at the PCB headers.

4. POWER MODULE REMOVAL is accomplished by removing the cable from the 9 pin header, 7 fast-on connections, and two fast on connec-tions to the speaker jack. Remove 5 threadforming heatsink screws from the under-side of the chassis.

PCB EXCHANGE POLICY

Parts marked with a single asterisk (*) in the Part Lists are not field replaceable. If a failure due to one of these components is detected, please

contact the FMIC Customer Service Department to order the complete Assembly.


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CIRCUIT DESCRIPTION

This section provides concise information about new or unusual circuitry designs incorporated into this amplifier model. The purpose is to aid the service technician by providing insight into the design areas most likely to become obstacles in troubleshooting. Information is focused for its effective use while maintaining the security of Fender® proprietary information wherever possible.

Overview

The WorkingPro series consists of the WorkingPro 400, 700, 2x10C, 15, 12, & 10 amplifiers. These amplifiers are highly modular, and use several common PCB assemblies. The WorkingPro 400, 700, 2x10C, & 15 amplifiers share a common pre-amp, with some minor stuffing differences to accommodate the monitor input & Wedge EQ in the combo amplifiers. The WorkingPro 12 & 10 have unique preamp PCB assemblies, which are based on the same preamp architecture, only with some of the features removed. The circuitry is derived from the classic SWR ampli-fiers & is designed to deliver the same tone and performance as the rest of the SWR amplifier line. New electronic features to SWR include the Bass Intensifier effect, a tuner mute function, and a new footswitching scheme. Also, the new combo ampli-fiers feature a powered monitor input, and a "Wedge EQ" circuit to compensate for the tonal change when the cabinet is in its tilt-back position. There are two basic power amplifier platforms used in this series. The first is the SWR500/1000 mod-ule. The "SWR 500" & "SWR 1000" amplifiers are essentially the same, only the SWR 500 module is stuffed with 6 output transistors instead of 8, since it is used in lower power applications. The SWR 1000 power module is used in the WorkingPro 700, and the SWR 500 power module is used in the WorkingPro 400 & 2x10C. The other power module used in this series is the SWR200 power module. This class-H power ampli-fier is used in the WorkingPro 10, 12 & 15 amps. Different transformers account for output power dif-ferences.

Preamp

The following discussion follows the signal path through the functional blocks of the amplifier: The signal is introduced at J1 & sees a 3.9MΩ input impedance. U3A provides input gain, which can be reduced by the input pad switch S2. The Aural Enhancer circuit provides part of the sig-nature SWR tone. U5A provides gain to make up for the attenuation of the passive Aural Enhancer circuit. The gain control is at U5B. The next block consisting of U8, U10B, & U12 is the Bass Intensifier circuit. The path through U8B is the direct signal. U10B is a lowpass filter with a vari-able cutoff frequency set by R73. This feeds a compressor circuit at U12. The compressed low-frequency signal is then mixed with the direct signal at U8A, resulting in an extreme bass boost. Q3 disables the Bass Intensifier when switched from the front panel or the footswitch. Next in series is the Wedge EQ circuit. When S4 is engaged, the Wedge EQ provides a slight bass boost and a mild mid-high cut @ U9B. The default position of S4 bypasses this circuit. The next stage comprising of U7 & U9A is the tone section. This is the same architecture as any other SWR amplifier, and boosts each frequency range by +/- 15dB. The frequency response of this stage is flat when all of the level knobs are at their center-detent position. The Effects Blend control is the standard SWR cir-cuit. When there is no plug in the Effects Return jack (J203), the "EFF_RETURN_R" signal, going to J203 ring, is open circuit, and the "EFF_RETURN_T" signal, going to J203 tip, is grounded. Therefore, the effects return control does nothing if there is no plug at J203. When a jack is inserted into J203, the "EFF_RETURN_R" signal is grounded, so the Effects Blend control wiper is grounded. As the control is turned, the grounded wiper will attenuate either the dry or the


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wet signal. The gain for the Effects Blend is pro-vided by U11A. The Powered Monitor Input signal is mixed in with the Effects Blend signal when the outputs of U15A and U11A connect at the Master Volume control. The Master Volume control is at U11B. The unique summing configuration for the preamp & monitor input signals provides the correct taper for this con-trol. The limiter circuit is also included at U11B, and compresses the signal at high levels. The amount of compression is set by R119 (Limiter Adj), and is adjusted at the factory to a pre-determined level. When S5 is in the default (out) position, the limiter is engaged. When S5 is latched, the Limiter circuit is in bypass mode. The stage at U15B serves as a gain buffer for the power amp, and also provides the mute point for the tuning mute. The switching circuitry allows control of the mute and Bass Intensifier functions. The architecture of the two switching circuits are basically the same. The circuit looks for a momentary pulse that can be generated by either the footswitch, or the front panel switch. Since the two switches are in parallel, both the front panel switch and the footswitch will remain operational when the footswitch is plugged in. The pulses from the switch are debounced, and then toggle the state of a flip flop, which drives both the control circuitry and the LED indicators. Mute & Bass Intensifier functions are controlled by driving J111 switching FETs in the respective circuits. The Overload circuit operates simply by monitoring several stages of the amplifier. If any of the sense points rise above the overload threshold (approxi-mately 12V), the Preamp Clip LED will be illuminated.

Rear Panel PCB

The rear panel PCB is connected to the main preamp PCB through two 8 circuit cable assemblies (P1-2 / P201-202). There are five signal circuits that are routed to the rear panel: Direct, Line, Headphone, Effects Send, & Effects Return. The other signals are for power & control.

The Tuner Out comes from the "Direct" signal, and is not affected by the tuner mute.

The circuitry around U203 is for the XLR & Unbalanced Out jacks (J204 & J207). S201 switches the Line Out source from "Direct" to "Line". Two muting points (Q201-202) mute both the XLR out and the Unbalanced Out jacks. The Pad switch at S203 attenuates the signal by approximately 10dB. U203B inverts the signal for the balanced output. The Unbalanced Out also taps from the output of U203B.

The effects send comes directly from the main PCB, after the tone section. As described earlier, when a jack is inserted into J203, the ring is grounded, enabling the Effects Blend control.

The Footswitch was designed so that it could work in parallel with the front panel buttons. LEDs on both the footswitch and the front panel will track the switching status from both the front panel buttons and the footswitch.

Power Amp

The SWR200 power module is a self-contained class-H power amp and power supply. The module is used in several SWR products, including the California Blonde, WorkingPro 10, WorkingPro12, & WorkingPro 15. Different power transformers account for power output differences in each product.

All transformer secondary leads connect directly to the power amp PCB. The class-H power amp architecture requires two sets of high voltage suppies. These two high voltage supplies are included on the power amp PCB, as well as a low voltage +/-15V supply. This low voltage supply is made available to the preamp through the 9 pin preamp header.

The small primary wiring PCB is also part of the power amp assembly, and breaks away from the PCB during assembly. This serves as a termination point for all primary wire connections.

The power amp disperses heat through the heatsink bracket on the PCB assembly, directly to the chassis. Adequate ventillation should be allowed under and around the chassis to prevent the amp from overheating.

The speaker output is at WJ1 & WJ2, and is connected to the chassis-mount speaker jack in the amplifier chassis.


* Non-serviceable part. Replace complete parent assembly. See PCB EXCHANGE POLICY above. shaded Unique Fender® part. Order directly from the FMIC Parts Department. shaded + * Access to this part or assembly is controlled. Please contact the FMIC Customer Service Department. ** Safety Requirement part. Replacement must match Safety Agency…–Value, if specified –Type, if specified –Approval Mark(s) if on part. shaded +** Both a unique Fender® part and a Safety Requirement part as defined above.

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PARTS LIST: MAIN – PCB ASSEMBLY (Rev A) QTY. PART # DESCRIPTION REFERENCE DESIGNATION

*1 0069498000 PCB FAB WORKINGPRO 12

REF SVC DIAG COMB WORKINGPRO 12 2 0028474003 CAP AE RDL 100uF 25V 20% C54-55 2 0028463003 CAP AE RDL 10uF 50V 20% C5 C37 5 0028458003 CAP AE RDL 1uF 50V 20% C1 C3 C15 C19 C44 6 0028459003 CAP AE RDL 2.2uF 50V 20% C11-12 C38 C45 C47 C51 9 0051457003 CAP CD 100pF 500V 5% C9 C14 C16 C26 C40 C42 C46 C48-49

13 0034788003 CAP CR .1uF 50V 20% .2" LS C2 C4 C8 C10 C13 C17 C20 C23 C35 C39 C50 C52-53 3 0027264003 CAP MPF .01uF 100V 10% C6 C21-22 1 0027261003 CAP MPF .0047uF 100V 10% C41 1 0066032000 CAP MYLAR .001uF 63V 5% C18 2 0066037000 CAP MYLAR .015uF 250V 10% C30-31 1 0066039000 CAP MYLAR .01uF 250V 10% C43 1 0066040000 CAP MYLAR .022uF 250V C33 2 0066041000 CAP MYLAR .033uF 250V 10% C28 C34 2 0066043000 CAP MYLAR .068UF 250V C29 C32 1 0066046000 CAP MYLAR .1uF 100V 5% C24 2 0066047000 CAP MYLAR .22uF 63V MIN 10% C7 C25 1 0066048000 CAP MYLAR .27uF 100V 10% C27 1 0066034000 CAP MYLAR .0039uF 100V 5% C36

11 0006260001 DIODE 1N4448 SIGNAL LL D2-4 D6 D8 D11-12 D14-17 2 0027416000 HDR .1 CTR 8 CKT SQ PIN P1-2 1 0027418000 HDR .1 CTR 9 CKT SQ PIN P4 1 0027410000 HDR .1 CTR 3 CKT SQ PIN P3 3 0026547000 IC COMPARATOR QUAD LM339 U1 U4 U6 1 0066409000 IC DIP J-K DUAL FLIP-FLOP D4027BCN U2 4 0016795000 IC OP-AMP DUAL TL072 U3 U5 U10 U14 6 0031611000 IC OP-AMP DUAL PC4560 U7-9 U11-12 U15 1 0016917000 JACK 1/4 PCB 3/CD DCC J1 1 0066471000 LED BLUE #480010 D7 4 0064511000 LED RED T-1 3mm CLEAR D1 D5 D9 D13 6 0065469000 SPACER LED VERTICAL .1"x .9" @ D1 D5 D7 D9 D8 D10 D13 1 0064404000 LED GREEN T-1 3mm CLEAR D10 1 0065383000 LED FLYING LEAD 3" BLUE CLEAR D18 1 0056327000 OPTO-ISOLATOR NSL32S01 U13 4 0064621000 CONTROL VERT 50KB R31 R50 R101 R112 3 0064622000 CONTROL VERT 50KB W/DETENT R62 R78 R91 1 0064713000 CONTROL VERT 100k 10C DUAL R73

13 0024997001 RES CF 1/4W 5% 100k LL R3-4 R16 R37 R40 R43 R60 R64-65 R69-70 R97 R100 2 0024952001 RES CF 1/4W 5% 100ohm LL R51 R108



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PARTS LIST: MAIN – PCB ASSEMBLY (Rev A) QTY. PART # DESCRIPTION REFERENCE DESIGNATION

23 0024981001 RES CF 1/4W 5% 10k LL R7 R10 R13 R15 R17 R21-22 R24 R35 R38 R44 R53 + R55 R81-82 R84 R88 R98 R104-105 R125 R133 R136 2 0025084001 RES CF 1/4W 5% 10M LL R58 R68 1 0024998001 RES CF 1/4W 5% 120k LL R77 2 0024983001 RES CF 1/4W 5% 12k LL R20 R92 1 0029539001 RES CF 1/4W 5% 13k LL R87 3 0024999001 RES CF 1/4W 5% 150k LL R66 R103 R131 1 0024985001 RES CF 1/4W 5% 15k LL R48 2 0024986001 RES CF 1/4W 5% 18k LL R34 R123 7 0024965001 RES CF 1/4W 5% 1k LL R2 R6 R19 R41 R59 R75 R89 2 0024969001 RES CF 1/4W 5% 1.5k LL R132 R134 9 0025069001 RES CF 1/4W 5% 1M LL R11 R18 R25 R56-57 R67 R109 R126 R129 7 0024971001 RES CF 1/4W 5% 2.2k LL R28 R32-33 R39 R71 R99 R106 3 0029455001 RES CF 1/4W 5% 2.4k LL R12 R36 R116 1 0024972001 RES CF 1/4W 5% 2.7k LL R122 6 0024987001 RES CF 1/4W 5% 22k LL R47 R52 R111 R113-115 2 0024988001 RES CF 1/4W 5% 27k LL R29 R102 2 0029610001 RES CF 1/4W 5% 3k LL R9 R45 3 0024973001 RES CF 1/4W 5% 3.3k LL R76 R93 R130 1 0066903001 RES CF 1/4W 5% 3.9M LL R30 6 0024989001 RES CF 1/4W 5% 33k LL R54 R61 R85-86 R94 R128

12 0024977001 RES CF 1/4W 5% 4.7k LL R1 R5 R8 R14 R23 R26 R42 R46 R49 R83 R120-121 1 0025065001 RES CF 1/4W 5% 470k LL R127 2 0024961001 RES CF 1/4W 5% 470ohm LL R27 R117 8 0024993001 RES CF 1/4W 5% 47k LL R72 R79-80 R96 R110 R118 R124 R135 2 0024994001 RES CF 1/4W 5% 56k LL R63 R95 1 0024980001 RES CF 1/4W 5% 8.2k LL R74 1 0024964001 RES CF 1/4W 5% 820ohm LL R90 1 0024996001 RES CF 1/4W 5% 82k LL R107 2 0065468000 SWITCH DPDT VERTICAL MOM S1 S3 3 0050817000 SWITCH PB PC VERT MNT DPDT S2 S4-5 5 0065384000 EXTENSION BUTTON 2.8mm @S1-5 5 0065385000 BUTTON SWITCH ROUND GRAY @S1-5 1 0066772000 TRIM POT HORIZ 10K LINEAR R119 1 0067238003 XSTR N-CH JFET 2N5457 TO-92 Q4 3 0014689003 XSTR N-CH JFET J111 TO-92 Q3 Q5-6 2 0016739003 XSTR NPN 2N4401 TO-92 Q1-2



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PARTS LIST: I/O REAR PANEL – PCB ASSEMBLY (Rev C) QTY. PART # DESCRIPTION REFERENCE DESIGNATION

*1 0064749000 PCB ASSY WORKINGPRO I/OREF SVC DIA COMB. WORKINGPRO AMPS

9 0028471003 CAP AE RDL 47uF 50V 20% C201-202 C204-205 C208 C210 C212 C221-2227 0051457003 CAP CD 100pF 500V 5% C203 C211 C213-215 C217 C220 4 0051406003 CAP CD 220pF 500V 10% C206-207 C209 C219 2 0034788003 CAP CR .1uF 50V 20% .2" LS C216 C218 1 0065388000 CONNECTOR DIN VERT 5 PIN FEMALE J201 1 0006260001 DIODE 1N4448 SIGNAL D201 2 0065442000 HDR .1 CTR 8 CKT RT ANG LOCKING P203-204 3 0031611000 IC OP-AMP DUAL PC4560 U201-203 4 0051007000 JACK 1/4 PCB STEREO W/ SWITCH J202 J204-206 1 0066432000 JACK1/4"STPLST NON-SHORTNG J203 2 0025109001 RES CF 1/2W 5% 47ohm LL R201 R205 5 0024969001 RES CF 1/4W 5% 1.5k LL R208 R211-212 R232-233 9 0024997001 RES CF 1/4W 5% 100k LL R207 R209-210 R213 R218 R222 R231 R234-1 0024952001 RES CF 1/4W 5% 100ohm LL R203 1 0024937001 RES CF 1/4W 5% 10ohm LL R206 5 0024977001 RES CF 1/4W 5% 4.7k LL R204 R214 R226 R228 R230 1 0024993001 RES CF 1/4W 5% 47k LL R202

11 0015582001 RES MF 1/4W 1% 10.0k LL R215-217 R219-221 R223-225 R227 R229 3 0050817000 SWITCH PB PC VERT MNT DPDT S201-203 3 0065385000 BUTTON SWITCH ROUND GRAY @S201-203 3 0065384000 EXTENSION BUTTON 2.8mm SHAFT @S201-203 1 0049892000 XLR CONNECTOR MALE GOLD J207 2 0014689003 XSTR N-CH JFET J111 TO-92 Q201-202 1 REF CABLE RIBBON 5 COND 2" @P201-202



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PARTS LIST:POWER AMP – PCB ASSEMBLY (Rev C) QTY. PART # DESCRIPTION REFERENCE DESIGNATION

*1 0065466000 PCB ASSY SWR200 PWR AMP REF SVC DIA COMB SWR 200 PWR AMP

2 0028492000 CAP AE RDL 1000uF 16V 20% C7 C13 1 0028474003 CAP AE RDL 100uF 25V 20% C42 1 0028458003 CAP AE RDL 1uF 50V 20% C18 2 0070017000 **CAP AE RDL 2200uF 35V 20% 105C C32 C41 2 0068716000 **CAP AE RDL 2200uF 35V 20% 105C C16 C24 2 0028482003 CAP AE RDL 220uF 50V 20% C14-15 2 0028467003 CAP AE RDL 22uF 50V 20% C34-35 2 0070016000 **CAP AE RDL 4700uF 80V 20% 105C C21-22 4 0028471003 CAP AE RDL 47uF 50V 20% C2-3 C37 C40

2 0051457003 CAP CD 100pF 500V 5% C27-28 7 0034788003 CAP CR .1uF 50V 20% .2" LS C1 C4-6 C8 C11-12 4 0052003003 CAP MPF .1uF 250V 10% C19-20 C23 C33 1 0053860000 **CAP MPF .1uF 250VAC 20% C17 2 0027278003 CAP MPF .1uF 63V 10% C38 C43 1 0030936003 CAP PFF RDL .0022uF 50V 5% C25 2 0033583003 CAP PFF RDL .0047uF 100V 10% C9-10 2 0033588003 CAP PFF RDL .01uF 100V 10% C29-30 2 0051416003 CAP SF .1uF 100V 10% C31 C39

12 0064089001 DIODE 1N4003 D13-14 D23-24 D27-30 D46-49 23 0006260001 DIODE 1N4448 SIGNAL D7-10 D16 D18 D21-22 D31-45 4 0029045000 DIODE 6A 400V 6A4 LEAD FORMED D11-12 D25-26 2 0025821001 DIODE HV FDH400 SWITCHING LL D19-20 2 0052050000 DIODE MUR1520 200PRV 15 AMP D1-2 2 0068714000 SUPPORT TO-220, STANCHION PAD @ D1-2 2 0068377001 DIODE SB1H100 1A D4-5 4 0031635001 DIODE ZEN 1N5240B 10V 5% LL D3 D6 D15 D17

11 0025802000 FSTN TAB MALE .250x.032 PCB MT P1-P4, P6-P12 4 0066292000 **FUSE 4 AMP PICO F2-5 1 0027418000 HDR .1 CTR 9 CKT SQ PIN P13 1 0013562000 IC REGULATOR +15V MC7815CT U1 1 0013564000 IC REGULATOR -15V MC7915CT U2 1 REF JUMPER WIRE 22 GA W1 3 0024997001 RES CF 1/4W 5% 100k LL R47 R52 R56 2 0024952001 RES CF 1/4W 5% 100ohm LL R6 R16 3 0024981001 RES CF 1/4W 5% 10k LL R24 R48 R51 1 0024937001 RES CF 1/4W 5% 10ohm LL R60 1 0024985001 RES CF 1/4W 5% 15k LL R58 1 0025058001 RES CF 1/4W 5% 180K LL R40 1 0024986001 RES CF 1/4W 5% 18k LL R23 4 0024965001 RES CF 1/4W 5% 1k LL R9 R14 R42 R46 2 0025069001 RES CF 1/4W 5% 1M LL R57 R59 1 0024972001 RES CF 1/4W 5% 2.7k LL R49 1 0024987001 RES CF 1/4W 5% 22k LL R22 3 0024988001 RES CF 1/4W 5% 27k LL R27-28 R50 1 0024977001 RES CF 1/4W 5% 4.7k LL R26



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PARTS LIST:POWER AMP – PCB ASSEMBLY (Rev C) QTY. PART # DESCRIPTION REFERENCE DESIGNATION

1 0025065001 RES CF 1/4W 5% 470k LL R55 1 0024993001 RES CF 1/4W 5% 47k LL R25 1 0027632001 RES MF 1/4W 1% 2.43k LL R34 1 0016946001 RES MF 1/4W 1% 825ohm LL R38 1 0051417001 RES MOX 2W 5% 22ohm LL R21 2 0065592000 RES MOX 2W 5% 3.3k LL R19-20 2 0054368001 RES MOX FP 1/2W 5% 1.5k LL R61-62 2 0041741001 RES MOX FP 1/2W 5% 47ohm LL R10 R13 4 0068717000 RES MOX FP 1/4W 5% 10 ohm R5 R7 R15 R17 1 0056577000 RES MOX FP 1/4W 5% 100ohm LL R1 4 0068721000 RES MOX FP 1/4W 5% 2.7k R37 R39 R53-54 2 0068719000 RES MOX FP 1/4W 5% 220 ohm R31 R36 2 0068720000 RES MOX FP 1/4W 5% 470 ohm R30 R32 7 0051040000 RES MOX FP 1/4W 5% 47ohm LL R11-12 R33 R35 R41 R43-44 2 0065593000 RES MOX FP 1W 5% 1.5K SMALL R4 R8 2 0065597000 RES MOX FP 5W 5% .15 OHM R2-3 1 0065594000 RES WW BT 7W 10% 1k R18 1 0051418003 **THERMAL SENSOR PTC 100 DEG C RT1 1 0026411000 **THERMISTOR 2.5 ohm 8A C30-19 RT2 4 0016739003 XSTR NPN 2N4401 TO-92 Q21 Q24 Q26-27 2 0068376000 XSTR NPN 2SA1386 MT-100 Q7 Q9 4 0025751003 XSTR NPN 2SC2362K/2SC2389STPS Q12-14 Q23 2 0068375000 XSTR NPN 2SC3519 MT-100 Q1 Q3 3 0028760000 XSTR NPN 2SC4793/2SC3298B Q2 Q4-5 2 0014867003 XSTR NPN MPSW42 TO-226AE Q18-19 3 0016742003 XSTR PNP 2N4403 TO-92 Q10 Q22 Q25 2 0025752003 XSTR PNP 2SA1038STPS Q11 Q20 2 0028759000 XSTR PNP 2SA1306A TO-220P Q6 Q8 3 0014866003 XSTR PNP MPSW92 TO-226AE Q15-17 1 0065551000 HEATSINK PLATE SWR 200W PWR AMP HS1 3 0032908000 SCRW TF 6-32x3/8 PHP ZI PCB to heatsink 2 0017746000 WSHR SHLDR NYL 1/8x1/4 @ VOLTAGE REGULATORS 7 0027638000 SCRW TF 4-40x3/8 HWHS ZI @ TO-220 DEVICES / HEATSINK 4 0032934000 SCRW TF 4-40x1/2 HWHS ZI .1" @ POWER TRANSISTORS 9 0032937000 WSHR CONE @ TRANSISTORS 4 0040903000 INSULATOR MICA TO-218 @ POWER TRANSISTORS 2 0017974000 INSULATOR MICA TO-220 @ VOLTAGE REGULATORS 1 REF WIRESET PCB PWR AMP CALI BLONDE II



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PARTS LIST: CHASSIS ASSEMBLY QTY. PART # DESCRIPTION REFERENCE DESIGNATION

1 0064778000 **XFMR SWR 200W AMPS 120V 60 Hz 0064779000 **XFMR SWR 200W AMPS 100V 50 Hz (100V models) 0064780000 **XFMR SWR 200W AMPS 230/240V 50 Hz (230/240V models)

*1 0069499000 PCB ASSY WORKINGPRO 12 *1 0064749000 PCB ASSY, WORKINGPRO I/O *1 0065466000 PCB ASSY SWR200 PWR AMP 1 REF WIRESET CHS WORKINGPRO 12 1 0071261000 CABLE ASSY CRIMP 8 CKT 10" RED 1 0071262000 CABLE ASSY CRIMP 8 CKT 10" GRN 1 0070560000 CABLE ASSY CRIMP 9 CKT 11" BLK 1 0047213000 CONNECTOR AC LINE MALE IEC 1 0067122000 **SWITCH ROCKER 15 A power switch (120V models) 0068325000 **SWITCH ROCKER SPST 16A EURO power switch (export models) 1 0036702000 **FUSE HOLDER 3AG FINGER GRIP (100/120V models) 1 0090738000 **FUSE QA 1-1/4x1/4 250v 6A (120V models) 0018677000 **FUSE QA 1-1/4x1/4 250v 8A (100V models) 0041462000 **LABEL FUSE WHT/BLK F8A 250V (100V models) 0036703000 **FUSE HOLDER 5MM FINGER GRIP (230/240V models) 0020796000 **FUSE QA 20mmx5mm 250v 3.15A (230/240V models)

REF **LABEL FUSE WHT/BLK F3.15A 250V (230/240V models)

REF LABEL VOLTAGE 230V W ON B (230V models) REF LABEL VOLTAGE 240V W ON B (240V models) REF LABEL VOLTAGE 100V W ON B (100V models)

1 REF LABEL GROUNDING SEMKO 1 0032900000 JACK PHONE 1/4" HI CURRENT 5 0031184000 SCRW M 6-32x1/4 PHP BLX ITLW @ PS PCB, DIN 2 0051155000 SCRW SMB 4x3/8 PHP BLX @ XLR jack 4 0022004000 NUT KEPS #8-32 ZINC Transformer mounting 5 0028500000 SCRW TF 8-32x3/4 HWH SLTD Power amp mounting 1 0069393000 NUT 6-32 HEX EXT LOCK GND 1 9904300100 WASHER LCK INTL 3/8X.681X.032 @ speaker jack 2 0041602000 SCRW M 6-32x3/8 FHP BLX @ IEC connector 1 0029894000 WSHRLCKINTL 3/8x.500x.022 NI @ input jack 1 0070641000 STANDOFF .95" ADHESIVE 1 0037990000 SCRW PLASTITE 6x3/8 PHP BLX @ standoff 1 9906900590 CLAMP CABLE NYL ADHESIVE *1 0065926000 BADGE SWR "HUBCAP" SMALL 2 0067098000 SPEED NUT PUSH ON TYPE SMALL 8 0066453000 KNOB BLACK PUSH-ON 18 TOOTH



13

PARTS LIST: END ITEM ASSEMBLY QTY. PART # DESCRIPTION REFERENCE DESIGNATION

1 REF CHASSIS ASSY WORKINGPRO 12 120V REF CHASSIS ASSY WORKINGPRO 12 230V (230V models) REF CHASSIS ASSY WORKINGPRO 12 240V AUS (240V models) REF CHASSIS ASSY WORKINGPRO 12 100V (100V models)

*1 0069492000 Cabinet Assy WorkingPro 12 1 0071300000 SPKR 12" 4ohm EMINENCE 4 0026577000 SCRW M 10-32x1 PHP BLX Speaker mount 1 0067255000 Tweeter TLX-1 8 0024052000 SCRW SMA 6-5/8 PHP BLX Tweeter & Plate mount 1 0069485000 PLATE ASSY MONITOR INPUT WORKINGPRO

1 REF WIRESET END ITEM WORKINGPRO 12 1 0070634000 CABLE 24" WORKINGPRO MONITOR IN to monitor plate 1 0071296000 CABLE ASSY SPKR RT ANGL 20"

6 9904101550 SCRW M 8-32x1-3/16 OHP BLX CP Chassis mount 6 0029527000 WSHR FNSH 8-5/8 FLNGD BLX WX Chassis mount

*1 0069493000 GRILLE WORKINGPRO 12 10 0029677000 SCRW SMA 6x1 THP BLX Grille mount 0053997000 **CORD PWR W/IEC CONN 100V 1 0047248000 **CORD PWR W/IEC CONN DOM 0047249000 **CORD PWR W/IEC CONN 230V UK 0047250000 **CORD PWR W/IEC CONN 250V 0047251000 **CORD PWR W/IEC CONN 230V

Service Diagram List

Service Diagram (Schematic) ............WorkingPro 12 Combo Amplifier

Service Diagram (PCB Assembly) ............WorkingPro 12 Combo Amplifier

Service Diagram (Schematic) ............WorkingPro I/O PCB

Service Diagram (PCB Assembly) ............WorkingPro I/O PCB

Service Diagram (Schematic) ............SWR 200 Power Amp

Service Diagram (PCB Assembly) ............SWR 200 Power Amp

Documents

WorkingPro 12 amp SM