3CD CHANGER KARAOKE SYSTEMSERVICE MANUALMODEL: LM-K3960A,
LMS-K3960VSERVICE MANUALMODEL:LM-K3960A,LMS-K3960VCAUTIONBEFORE
SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.-
1-1 -[CONTENTS] SECTION 1. GENERAL SERVICING PRECAUTIONS. . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . 1-2 ESD PRECAUTIONS. . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 1-4 SPECIFICATION . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.1-5 SECTION 2. ELECTRICAL SECTION ELECTRICAL TROUBLESHOOTING
GUIDE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . 2-1 INTERNAL BLOCK DIAGRAM of ICs . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13 BLOCK
DIAGRAM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . 2-19 SCHEMATIC
DIAGRAMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . 2-21 WIRING DIAGRAM . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . 2-35 PRINTED CIRCUIT DIAGRAMS. . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 2-37 SECTION 3. DVD PART ELECTRICAL DVD ELECTRICAL
TROUBLESHOOTIHG GUIDE. . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . .3-1 DVD SCHEMATIC DIAGRAMS . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. .3-15 DVD PRINTED CIRCUIT DIAGRAMS. . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .3-23 SECTION 4.
EXPLODED VIEWS CABINET AND MAIN FRAME SECTION. . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1 TAPE
DECK MECHANISM (A/R & A/S : RIGHT A/R DECK) . . . . . . . . . .
. . . . . . . . . . . . . . . .4-3 TAPE DECK MECHANISM (A/R &
A/S : LEFT A/S DECK). . . . . . . . . . . . . . . . . . . . . . . .
. . .4-5 CD MECHANISM. . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-7 SECTION 5. SPEAKER PART SPEAKER PART. . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . .5-1 SECTION 6. REPLACEMENT PARTS LIST
REPLACEMENT PARTS LIST. . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .6-1- 1-2 -SECTION
1. GENERAL SERVICING PRECAUTIONSI NOTES REGARDING HANDLING OF THE
PICK-UP1. Notes for transport and storage1) The pick-up should
always be left in its conductive bag until immediately prior to
use.2) The pick-up should never be subjected to external pressure
or impact.2. Repair notes1) The pick-up incorporates a strong
magnet, and so should never be brought close to magnetic
materials.2) The pick-up should always be handled correctly and
carefully, taking care to avoid external pressure andimpact. If it
is subjected to strong pressure or impact, the result may be an
operational malfunction and/ordamage to the printed-circuit
board.3) Each and every pick-up is already individually adjusted to
a high degree of precision, and for that reasonthe adjustment point
and installation screws should absolutely never be touched.4) Laser
beams may damage the eyes!Absolutely never permit laser beams to
enter the eyes!Also NEVER switch ON the power to the laser output
part (lens, etc.) of the pick-up if it is damaged.5) Cleaning the
lens surfaceIf there is dust on the lens surface, the dust should
be cleaned away by using an air bush (such as usedfor camera lens).
The lens is held by a delicate spring. When cleaning the lens
surface, therefore, a cottonswab should be used, taking care not to
distort this.6) Never attempt to disassemble the pick-up.Spring by
excess pressure. If the lens is extremely dirty, apply isopropyl
alcohol to the cotton swab. (Donot use any other liquid cleaners,
because they will damage the lens.) Take care not to use too much
ofthis alcohol on the swab, and do not allow the alcohol to get
inside the pick-up.Storage in conductive bagDrop impactNEVER look
directly at the laser beam, and dont let contact fingers or other
exposed skin.MagnetHow to hold the pick-upConductive SheetCotton
swabPressurePressure- 1-3 -I NOTES REGARDING COMPACT DISC PLAYER
REPAIRS1. Preparations1) Compact disc players incorporate a great
many ICs as well as the pick-up (laser diode). These componentsare
sensitive to, and easily affected by, static electricity. If such
static electricity is high voltage, componentscan be damaged, and
for that reason components should be handled with care.2) The
pick-up is composed of many optical components and other
high-precision components. Care must betaken, therefore, to avoid
repair or storage where the temperature of humidity is high, where
strong magnet-ism is present, or where there is excessive dust.2.
Notes for repair1) Before replacing a component part, first
disconnect the power supply lead wire from the unit2) All
equipment, measuring instruments and tools must be grounded.3) The
workbench should be covered with a conductive sheet and
grounded.When removing the laser pick-up from its conductive bag,
do not place the pick-up on the bag. (This isbecause there is the
possibility of damage by static electricity.)4) To prevent AC
leakage, the metal part of the soldering iron should be grounded.5)
Workers should be grounded by an armband (1M )6) Care should be
taken not to permit the laser pick-up to come in contact with
clothing, in order to prevent sta-tic electricity changes in the
clothing to escape from the armband.7) The laser beam from the
pick-up should NEVER be directly facing the eyes or bare
skin.CLEARING MALFUNCTIONYou can reset your unit to initial status
if malfunction occur(button malfunction, display, etc.).Using a
pointed good conductor(such as driver), simply short the RESET jump
wire on the inside ofthe volume knob for more than 3 seconds.If you
reset your unit, you must reenter all its settings(stations, clock,
timer)NOTE: 1. To operate the RESET jump wire, pull the volume
rotary knob and release it.2. If you wish to operate the RESET jump
wire, it is necessary to unplug the power cord.Resistor(1
Mohm)ConductiveSheetResistor(1 Mohm)ArmbandRESET jump
wireVOLUMEVOLUME KNOBDOWNUP- 1-4 - ESD PRECAUTIONSI
Electrostatically Sensitive Devices (ESD)Some semiconductor (solid
state) devices can be damaged easily by static electricity. Such
componentscommonly are called Electrostatically Sensitive Devices
(ESD). Examples of typical ESD devices are integratedcircuits and
some field-effect transistors and semiconductor chip components.
The following techniques shouldbe used to help reduce the incidence
of component damage caused by static electricity.1. Immediately
before handling any semiconductor component or
semiconductor-equipped assembly, drain offany electrostatic charge
on your body by touching a known earth ground. Alternatively,
obtain and wear acommercially available discharging wrist strap
device, which should be removed for potential shock reasonsprior to
applying power to the unit under test.2. After removing an
electrical assembly equipped with ESD devices, place the assembly
on a conductive sur-face such as aluminum foil, to prevent
electrostatic charge buildup or exposure of the assembly.3. Use
only a grounded-tip soldering iron to solder or unsolder ESD
devices.4. Use only an anti-static solder removal device. Some
solder removal devices not classified as "anti-static" cangenerate
electrical charges sufficient to damage ESD devices.5. Do not use
freon-propelled chemicals. These can generate electrical charges
sufficient to damage ESDdevices.6. Do not remove a replacement ESD
device from its protective package until immediately before you
areready to install it. (Most replacement ESD devices are packaged
with leads electrically shorted together byconductive foam,
aluminum foil or comparable conductive materials).7. Immediately
before removing the protective material from the leads of a
replacement ESD device, touch theprotective material to the chassis
or circuit assembly into which the device will by installed.CAUTION
: BE SURE NO POWER IS APPLIED TO THE CHASSIS OR CIRCUIT, AND
OBSERVE ALLOTHER SAFETY PRECAUTIONS.8. Minimize bodily motions when
handing unpackaged replacement ESD devices. (Otherwise harmless
motionsuch as the brushing together of your clothes fabric or the
lifting of your foot from a carpeted floor can gen-erate static
electricity sufficient to damage an ESD device).CAUTION. GRAPHIC
SYMBOLSTHE LIGHTNING FLASH WITH APROWHEAD SYMBOL. WITHIN AN
EQUILATERAL TRIANGLE, ISINTENDED TO ALERT THE SERVICE PERSONNEL TO
THE PRESENCE OF UNINSULATED DAN-GEROUS VOLTAGE THAT MAY BE OF
SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OFELECTRIC SHOCK.THE
EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO
ALERT THESERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY
INFORMATION IN SERVICELITERATURE.- 1-5 - SPECIFICATIONSGeneralPower
supply Refer to the main label.Power consumption 70 W
(LM-K3960Q/LM-KW3960Q/LM-K3860Q model)50 W (LM-K3565Q model)30 W
(LM-K3365Q model)Net Weight 6.5 kgExternal dimensions (W x H x D)
272 X 322 X 354 mmTuner/AmplifierFM Tuning Range 87.5 - 108.0 MHz
or 65 -74 MHz, 87.5 -108.0 MHzIntermediate Frequency 10.7 MHzSignal
to Noise Ratio 60/55 dB (Mono/Stereo)Frequency Response 140 - 10000
HzAM Tuning Range 522 - 1620 kHz or 520 - 1720 kHzIntermediate
Frequency 450 kHzSignal to Noise Ratio 30 dBFrequency Response 140
- 1800 HzOutput Power LM-K3960Q/LM-KW3960Q model - 130 W + 130 W
(4, THD 10 %) LM-K3860Q model - 100 W + 100 W (4 , THD 10 %)
LM-K3565Q model - 50 W + 50 W (4 , THD 10 %) LM-K3365Q model - 30 W
+ 30 W (4 , THD 10 %) T.H.D 0.5 %Frequency Response 140 - 20000
HzSignal-to-noise ratio 75 dBDVD/VCD/CD playerFrequency response
(audio) 40 - 20000 HzSignal-to-noise ratio (audio) More than 75 dB
(1 kHz)Signal-to-noise ratio (video) More than 55 dB (1 kHz)Dynamic
range (audio) More than 80 dBVideo output 1.0 V (p-p), 75 S-video
output (Y) 1.0 V (p-p), 75 (C) 0.3 V (p-p), 75 Component Video
output (Y) 1.0 V (p-p), 75 (Pb)/(Pr) 0.7 V (p-p), 75
SpeakersSpeaker Name Front Speaker (L/R)Type Bass Reflex 2Way
3Speaker (LMS-K3960V/LMS-KW3960V/LMS-K3860V)Bass Reflex 2Way
2Speaker (LMS-K3565V/LMS-K3365V)Impedance 4 Frequency Response 55 -
20000 HzSound Pressure Level 86 dB/W (1m)Rated Input Power 130 W
(LMS-K3960V/LMS-KW3960V)100 W (LMS-K3860V)50 W (LMS-K3565V)30 W
(LMS-K3365V)Max. Input Power 260 W (LMS-K3960V/LMS-KW3960V)200 W
(LMS-K3860V)100 W (LMS-K3565V)60 W (LMS-K3365V)Net Dimensions (W x
H x D) 214 X 386 X 318 mm (LMS-K3960V/LMS-KW3960V/LMS-K3860V)229 X
224 X 286 mm (LMS-K3565V/LMS-K3365V)Net Weight 6.3
kg(LMS-K3960V/LMS-KW3960V/LMS-K3860V)4.2 kg(LMS-K3565V)3.8
kg(LMS-K3365V)Cassette tape playerTape Speed 3000 3 % (MTT-111.
NORMAL-SPEED)Wow Flutter 0.25 % (TT -111, JIS-WTD)F.F/REW. Time 120
sec (C-60)Frequency Response 250 - 8000 HzSignal to Noise Ratio 43
dBChannel Separation 50 dB (P/B)/45 dB (R/P)Erase Ratio 55 dB
(MTT-5511)- 1-6 -- 2-1 -SECTION 2. ELECTRICAL SECTION ELECTRICAL
TROUBLESHOOTING GUIDEP7904 6PIN P-SENS checkRefer to
SMPSTroubleshootingCheck if IC101 KIA7042input is over 5VCheck if
IC101 KIA7042input is over 4.3VIC101 KIA7042 relevant parts
checkrelevant parts replacementnormalIC101 KIA7042?IC100 78KO/KF2 1
PINPower ChecknormalYESNONONO NOYESYESYESYESI MICOM PART CHECK I-
2-2 -Q102 BASE PIN0.6V HIGH checkQ102 COLLECTOR 0.6V LOW checkCheck
if IC101KIA7042 outputpower is over 4.3Vrelevant parts
checkrelevant parts replacementnormalrelevant parts
replacementrelevant parts checknormalIC 103 8PIN IC 100 19,20,59PIN
5V checkX101:32.768KHzX100:9.8304MHz operationstatus
checknormalP7904 5PIN 5.6V checkRefer to SMPSTroubleshootingOutput
5V operation check D101 1SR35relevant parts checknormalrelevant
parts replacementD101 1SR35 both terminalpower checkQ101 EMITTER 5V
checkand COLLECTONONONONONOYESYESYESYESYESYESYESYESYESYESYESYESI
MICOM PART CHECK II- 2-3 -IC100 78KOKF2 22,24 PIN Check22 PIN DATA
MICOM power 5V checkRefer to MICOMTroubleshootingrelevant parts
replacementrelevant parts checknormalRefer to
SMPSTroubleshootingP7302 assembly checkEach PIN power
checknormalrelevant parts replacementnormalP7904 1,2,3 power
checkF1+, F2 both terminal: 3.7V andabove VKK: power is over 26V
P7302 connection statuscheck and power checkF+,F2- both termainal:
3.7Vor above VKK:26V or abovepower checkIC301 PT6324 Power check50
PIN VKK:-26V 9.52 PIN +5VYESYESYESYESYESYESYESYESYESYESNO
NONONONONOI IC103 KS4CD21CS CHECKI FLD DISPLAY CHECK- 2-4 -IC100
IC301 DATACommunication checkPINPIN75 PIN 3PIN STB76 PIN 2PIN DO77
PIN 4PIN DI78 PIN 1PIN CLKIf 5V defective D3191SR35input and output
power checkrelevant parts check76 PIN DATA input checkrelevant
parts checkrelevant parts replacementnormalrelevant parts
replacementnormalFLT light onnormalIC10075 PIN STB77 PIN 4PIN DI78
PIN 1PIN CLKData output checkYESYESYESYESYESYESYESYESNONONONO- 2-5
-P7905 9PIN 3.3V checkX601 12.288MHz operationcheckIC604 PS982986
PIN CLK input checkIC100 78KOKF221 PWM_CLK22 PWM_DATA23
PWM_RESToutput checkIC604 PS9829 DATA inputcheck78 PIN DATA79 PIN
CLK96 PIN RESTPWM MODULATOR
outputcheckFL:75(+)74(-)FR:71(+)70(-)SW:68(+)67(-)CEN:62(+)61(-)
SL:59(+)58(-)SR:52(+)51(-)normalIC604 PS9829 VDD PINPower
check(3.10.22.29.39.47.56.65.72.87. 94)Refer to
SMPSTroubleshootingrelevant parts check
X60412.288MHznormalR668(470) output checknormalLINE resistance
checkDATA:R671 CLK:R670RST:R665normalDVD ASS`Y PS9829
commu-nication status check(P7403)IC604 PS9829 DATA input
checknormalIC604 PS9829 parts checkrelevant parts
replacementrelevant parts replacementrelevant parts
replacementRefer to DVDTroubleshootingCheck each line resistance
checkYESYESYESYESYESYESYESYESYESYESYESYESNONONONONONONONONONONOI
PWM ALTERATION PART CHECK- 2-6 -P7905 3 PIN+12 13.14.15PIN 32VEach
IC700,701,702,70334.29.26.21 PIN input powercheckEach IC
700.701.702.7031.36.17.18.19 PIN +12Vinput power checkPWM MODULATOR
inputpower check Each IC4.6.14.16 PINPOWER IC 700.701.702.703
34.29.27.20 PIN outputcheckOutput LINE COIL checknormalRefer to
SMPSTroubleshootingEach LINE resistance outputpower
checkIC700:R702.701.726.727.724IC701:R730.729.750.753.752IC702:R756.755.768.771.770IC703:R774.773.794.797.796relevant
parts replacementYESYESYESYESYESYESNONONOI POWER AMP PART CHECK-
2-7 -Check whether JK800 contacts or notIC200(BU4052)4,11PIN input
waveform checkIC200(BU4052)3,13PIN outputwaveform checkIC801
(MC4580)2,6PIN input waveform checknormalIC200
(BU4052)16PINVDD,8PIN VSS power checku-COM
(IC301)83PIN,84PINCommunication checkRefer to
SMPSTroubleshootingrelevant parts replacementIC801
(MC4580)4PINVSS,8PIN VDD power checkrelevant parts
replacementYESYESYESYESYESYESNONONONOI AUX FUNCTION- 2-8 -Tuner
module (TU601) operation checkTUNER MODUEL powercheck (2PIN
9Vcheck)IC200 (BU4052)16PIN-VDD,8PIN VSS power checkrelevant parts
replacementrelevant parts replacementIC200 (BU4052)16PIN-VDD,8PIN
VSS power checkrelevant parts replacementIC200
(BU4052)16PIN-VDD,8PIN VSS power checkrelevant parts
replacementIC801(MC4580)4PINVSS,8PIN VDD power
checkIC200(BU4052)1,12PIN input waveform checkIC200 (BU4052)3,13PIN
output waveform checkIC601(BU4052)2,15PIN input waveform checkIC801
(MC4580)2,6PIN inputwaveform check.normalTAPE PCB ASS`YIC801
(MC4580)2,6PIN inputcheck normalIC200(BU4052)2,15PIN input waveform
checkIC200 (BU4052)3,13PIN output check IC601(BU4052)2,15PIN input
waveformcheckYESYESYESYESYESYESYESYESYESYESYESYESNONONONONOI TUNER
FUNCTION CHECKI TAPE FUNCTION CHECK- 2-9 -P2707:4 PIN 12VIC201
(HA12237)16 PIN 12Vinput waveform checkIC201:5.26 PINSignal Output
checkIC20114 PIN MUTE operation checknormalRefer to
SMPSTroubleshootingDECK HEAD input checkDECK HEAD input IC20132.39
PIN checkHEAD WIRE orMecha replacementrelevant parts
replacementrelevant parts replacementrelevant parts
checknormalIC202 10 PIN HIGH operationcheckrelevant parts
checknormalYESYESYESYESYESYESYESYESYESNONONONONONOI TAPE PLAY PART
CHECK- 2-10 -IC604 PS9829 #49,#52 PWMoutput checkRefer to PWM
modulationpartQ601 Collector waveform checkBoard to Board cantact
checkIC203 8 PIN +12V checkrelevant parts
checknormalQ205(D1304)BASE HIGH checkIC202 4 PIN HIGH
operationcheckRefer to SMPSTroubleshootingrelevant parts
replacementrelevant parts replacementnormalP7207 #2.#4 output
checkP2707 #5.#7 input checkIC203 MC4580 #1,#7 checkIC201 7.24 PIN
REC inputcheckIC201 10.21 PIN outputcheckL203 2.3 PIN oscillation
checkP2203 5.3 PIN input check8 PIN ERASE input
checknormalYESYESYESYESYESYESYESYESYESYESYESYESNONONONONONONONOI
TAPE REC PART CHECK- 2-11 -Check the fuse F901Check the DC V of
C905.If DC V is over 400VCheck the DC V OfC981,C945. If DC V is
6.1VOKChcek the DC VOfC950,C951 If DC V is in35V,-35VChcek the DC V
Of C909,C903,C921 If DC V is in14~19V and it is steady.Replace the
fuseCheck BD901, LF901,902Check IC901 ,902 Replace IC 901,902Check
short of P9702 lineCheck short of P9701 lineCheck short of
P9701,P9702line*MAIN PARTYESNOYESYESYESYESYESNONO NONONOI SMPS
POWER CIRCUIT- 2-12 -Check the PIN6 OF P9702If DC V is over
5.6VOKCheck power circuit Troubleshooting*P-SENS PARTCheck the PIN3
OF P9702If DC V is over -28V 2OKCheck power circuitTrouble
shooting*VKK PARTYESYESNONO- 2-13 - INTERNAL BLOCK DIAGRAM of ICs
TAS5142BLOCK DIAGRAM - 2-14 - U1739EJ2V1UD00/KF2_EBLOCK DIAGRAM -
2-15 - HA12237FBLOCK DIAGRAM - 2-16 - STR-S6757IF1905BLOCK DIAGRAM
PS9829BBLOCK DIAGRAM - 2-17 -
HuffmanDecoderVideoProcessor32-BitSerial
AudioProcessorInterfaceRISCDRAMInterface16 K
CacheGateway+DMAControllerDVDRAMROMSRAM/ROMInterfaceGPIOTV-EncoderTransportDescrambler+ControllerScalerATAPIDisplayOSD
/ SPUDSC RF AFE8051ControllerECCDigitalPLLAudio ADCServo Controller
/ RFAudio DACVDACHDMI I/FDeIntelacerUSB ES6838BLOCK DIAGRAM - 2-18
- PT6324BLOCK DIAGRAM BLOCK DIAGRAMOVERALL AV BLOCKDIAGRAMLC6324REC
L/R12.288 TAS5152_SDFL+/-, FR+/-9829_RESET9829_CLKLEVEL
METER9829_DATMAIN BOARD AMP BOARD 9.8304MHzVFD DATA.CLKEXP
CLKDATARL+/-, RR+/-CENTER +/-WOOFER+/-TAS5152_PDNCS5340CLK.DATAOP
AMPSUB WOOFERHEAD WOOFERDVD DATA.CLKOPTICALUSB DA+,-,5VOP
AMPEXPENDERDECKHA12237TAPE ICBU4052 OP
AMPCS5340TUNERMODULENECAUDIOMICOMPS9829APWMMODULATORTAS5142Power
AmpH/P_SWPWM OUTDVD/CDBLOCKDECK/ADMODE A.BSOL"A"RMOP AMPRDSDATA
CLKPLL DAT.CLKBU4052 DATA CS5340 RESETDVD DATA CLK12.28MHzTUNER
L/RTAPE L/RAUX L/R AUX L/RMIC INPUTSOL"B"MOTERHIGH/NOHALF A.BREC
F.RREC MUTEREC MUTEREC RETMREC SWREC MUTEFLFRS/WC/TRLRR2-19
2-202-21 2-22 SCHEMATIC DIAGRAMS MAIN SCHEMATIC
DIAGRAMMICA_MUTEUART12S12SYY Y/GMIC L, RAUDIO L,
RCYBS,C,pb,pr,R,BSCISDAMMA[0..1MB]B[0..15]SPDIF OUTSPDIF
INA,B,C,D,E,F,RCDMDI, DVDMDICDDVDCT,
VRDVD,VRDLDO1,LDO2OPEN/CLOSESLED,
F,T48MHz27MHzLOAD,SPINDLEUSB_RESETD-, D+HD[0..15], CONTROL
SIGNALMCU_INTQJRD#,HWR#MS_SEL_OUHA0HD[0..7]FOCUS/SLEDSPINDLE/TACKINGAMP_STBYDSCK#,CKE,CSo#,RAS0CAS#,WE#,DQMXLA[0..21],
LD[0..7]WRLL#,MRST#,LOE#AUDIOJACKVIDIOOUTP/UPMDECK
MECHANISMMOTORDRIVEICUSBCONUSBUBI9021SWITCHOPTINOPTOUTADCPWM/DACMICOMSDRAMMPEGESS6838FLASHEEPROM2-23
2-24 MAIN SCHEMATIC DIAGRAM2-25 2-26 MAIN AMP SCHEMATIC DIAGRAM2-27
2-28 FRONT SCHEMATIC DIAGRAM2-29 2-30 SMPS SCHEMATIC DIAGRAM2-31
2-32 DECK SCHEMATIC DIAGRAM2-33 2-34 JACK & IO SCHEMATIC
DIAGRAM2-35 2-36WIRING DIAGRAMCD/DVD /AMP PowerTO CD/DVD POWERFRONT
130Wx2Sub WooferX180WCenter/Surrd X3 60WDECK AssyPS9829SMPS
BLOCKDVD BLOCKFRONT BLOCKIO JACK
BLOCKP7206P7207P7709P7302P7904P7403P7501P7905P2706
P2707P2202P2203P2201P0401P9701P9702P3702P5701 P4703P4004LM-K7960
WIRING DIAGRAMLM-K7960 WIRING DIAGRAM2-37 2-38 PRINTED CIRCUIT
DIAGRAMS MAIN P.C. BOARD 2-39 2-40 MAIN P.C. BOARD 2-41 2-42 FRONT
P.C. BOARD2-43 2-44 SMPS P.C. BOARD DECK P.C. BOARD- 3-1 -SECTION
3. DVD PART ELECTRICAL DVD ELECTRICAL TROUBLESHOOTIHG GUIDEI POWER
CHECK GUIDEYYNYYYNNNNYPOWER ONPOWER ONDOES DVD/CDAPPEAR AT FLD?DOES
DISK1APPEAR AT FLD?CHECK THE VOLTAGE OF EACH PINON P5701.CHECK DVD
MDMODULE.CHECK CONNECTORP7501.RECONNECT IT.OK.DOES AUX,FM
87.5APPEAR AT FLD?DOES IT APPEAR DVDERROR AT FLD?PUSH KARAOKEDVD
BUTTONCHECK CONNECTOR (P4703,P4004,P5701)OKDOES NO DISC ORTIME ARE
APPEAREDAT FLD?B- 3-2 -POWER ONSHOW LOGO?FLASH MEMORY OPERATES
PROPERLY?SDRAM WORKSPROPERLY?CHECK AV CABLECONNECTION TO TV
SET.OUT_SW,IN_SWSIGNALS OK?CHECK THE MD MECHACHECK THE RELATED
CIRCUIT OFES6698FD (IC501)PIN133,134,137,138,139,140CHECK
CONNECTION LINES BETWEENSDRAM (IC502)&ES8381 OR THESDRAM IS
DAMAGED.CHECK THE OUTPUT SIGNALOF ES8381 TO IC401 FORCONTROL
OPEN/CLOSECHECK THE TRAY CONTROLI/O PIN ON IC401.OPEN /CLOSESIGNALS
ON IC401 AREOK?LOAD+&LOAD-SIGNALS ON PDM02ARE OK?CHECK THE
CABLECONNECTION BETWEEN DVDPCB AND MD (MECHA)DOES FIRST TRAY MOVE
INSIDEWHEN IT IS AT CLOSED POSITION?ES8381 VIDEOOUTPUTS
PROPERLY?CHECK CONNECTION LINES BETWEENFLASH &ES8381 OR THE
FLASH ACCESSTIME WHETHER IS SUITABLE OR NOT.I TEST &DEBUG
FLOWYYYYYYYYYN NNNN NNN- 3-3 -DOES THE SLEDMOVE TO INNER SIDEWHEN
IT IS AT OUTERPOSITION?LIMIT SW SIGNALON P4407 IS LOW?SLED SIGNAL
IS OK?CHECK THE CABLECONNECTION WITH MECHA.PROPER FOCUSOUTPUTS TO
MOTORDRIVER?PROPER F+&F-OUTPUTS?CHECK THE MOTOR DRIVER
(IC401).CHECK FOCUS CONNECTION ONES8381 AND MOTOR DRIVER IC.CHECK
THE RELATED CIRCUIT OF SLED AND MOTOR DRIVER IC (IC401)CHECK THE
MDCHECK CABLE CONNECTIONWITH PICK-UP HEAD.DO NOT PUT IN DISC
ANDTRAY CLOSE.OPTICAL LENS IS MOVING FOR SEARCHING FOCUS?BCYYYYYYYN
NNN NN- 3-4 -CLASER TURNS ONWHEN READINGDISC?DVDLD OR CDLDOUTPUT
PROPERLY?CHECK CABLE CONNECTIONBETWEEN PDM01 ANDPICK-UP HEAD.PROPER
SPINDLESIGNAL ON ES8381.SPIN+&SPIN-OUTPUT PROPERLY?CHECK THE
CABLECONNECTION BETWEENPDM03 AND MDCHECK THE SPINDLE CONTROL
OFMOTOR DRIVER (IC404).CHECK THE SPINDLE RELATED CIRCUITON
ES8381CHECK THE RELATED CIRCUIT OF LASER POWER TRANSISTOR.CHECK THE
LASER POWER CIRCUITBETWEEN ES8381 AND POWER TRANSIS-TOR.
(Q405,Q406)COLLECTOR VOLTAGE OF POWERTRANSISTOR IS
OK?(Q405,Q406)PUT DISC IN TRAY.DOES SPINDLEROTATE?DYYYYYYYNNNNNN-
3-5 -DEFOCUS ON OK?PROPER SIGNAL ONA,B,C,D FROM MD?CHECK THE
CONNECTIONS BETWEENPDM01 AND PICK-UP HEAD.CHECK THE RELATED CIRCUIT
OF ES8381FOCUS SIGNAL.CHECK THE RELATED CIRCUIT BETWEENIC401 AND
ES8381CHECK THE TRACKING CONTROLON MOTOR DRIVER (IC401).PROPER FOO
SIGNALON IC401?CHECK CABLE CONNECTIONBETWEEN PDM01 AND MD.PROPER
TRO SIGNALON IC401?T+&T-OUTPUTPROPERLY?CHECK CABLE CONNECTIONON
PICK-UP HEAD.CHECK RF SIGNAL WAVE-FORM.TRACKING OK?DISC
PLAY?YYYYYYYN NNNNNN- 3-6 -EALL OUTPUTS ARE OKDURING PLAYINGDISK
?TEST ENDAUDIO SIGNAL DATA ONP4703 IS OK?CHECK THE MAIN PCBPICTURE
SIGNAL DATA ON ES8381 IS OK?FOR EXAMPLE COMPOSITE VIDEO , CHECK THE
VIDEO MUTE TR (Q411),OUTPUT OF VIDEO BUFFER IC (IC407)ANDES8381
VIDEO SIGNAL DATACHECK THE CONNECTIONS BETWEENES8381 AND P4703YYN
NN N- 3-7 -I USB PARTTURN ON USBSEARCHING ORUSB DISPLAY
CHECKREADING OK CHECKOKCHECK THE POWER SUPPLY CIRCUIT.(CHECK
P5701)CHECK THE HRST#SIGNALCHECK THE USB PART AND DVD
PARTLINE.CHECK THE USB JACK POWER SUPPLY.(CHECK P4302)CHECK THE USB
DATA LINE.(P4302)CHECK THE IC405 (UBI9021).(CHECKDATA LINE PIN
14~17,20~23)NNYYYYYYY- 3-8 -WHEN POWER ON,RESET &DATA ETC
WAVEFORM1.RESET(DVD)2.RX3.TX4.LCS3#(FLASH)Playing at
USBfunction1.HRST#2.5V3.D-4.D+I WAVEFORM- 3-9 -OPEN/CLOSE WAVEFORM
AT POWER ONSTARTING ACTION WAVEFORM IN MD DEVICE1.Limit
SW2.OPEN3.CLOSE1.SLO (fromMPEG)2.SLED-3.SLED+(At Power on )- 3-10
-FOCUS WAVEFORM (AT CD)FOCUS WAVEFORM (AT DVD)1.FDO2.F+3.F-(INSERT
CD )(INSERT DVD )1.FDO2.F+3.F-- 3-11
-1.Spind2.Spin+3.Spin-1.A2.B3.C4.DAT POWER ON ,SPINDLE SIGNAL AT MD
DECKAT FIRST ACTION,FOCUS SIGNAL A,B,C,D- 3-12 -TRACKING SIGNALRF
WAVEFORM1.Tro2.Tr-3.Tr+- 3-13 -DISK TYPE JUGEMENT
WAVEFORM1.F+2.FDO3.SVRRF(DVD)(CD)- 3-14 -3-15 3-16 DVD SCHEMATIC
DIAGRAMS MPEG SCHEMATIC DIAGRAM3-17 3-18 RF & SERVO SCHEMATIC
DIAGRAM3-19 3-20 INTERFACE SCHEMATIC DIAGRAM3-21 3-22 USB SCHEMATIC
DIAGRAM3-23 3-24 PRINTED CIRCUIT DIAGRAMS DVD P.C. BOARD3-25 3-26
DVD P.C. BOARD4-1 4-2SECTION 4. EXPLODED VIEWS CABINET AND MAIN
FRAME
SECTION266451A26451267305263264259258256255254252250251253257255A00451450260280A47A48A41A46A49451261CN201
CABLE1CABLE2451451265A43A44451281A51CABLE3CABLE4A50OPTIONL4-3
4-4TAPE DECK MECHANISM (A/R & A/S : LEFT A/S
DECK)023015022019037021020018017006A01008007001002003009009011013A02025LOCA.
NO. LG PART NO. DESCRIPTION SPECIFICATIONA00 6720AG0013A DECK,AUDIO
CWN42FR605 TOKYO PIGA01 6768RZUP01A DECK MECHANISM PARTS
50-093-4XXXX PIGEON UNIT PCA02 6768R-EP05A DECK MECHANISM PARTS
50-093-41234 PIGEON HEAD ASSY001 6768RZBP04A DECK MECHANISM PARTS
02-083-4266 PIGEON BELT/FEC002 6768RZBP05A DECK MECHANISM PARTS
02-083-4267 PIGEON BELT/FEL003 6768R-PP03A DECK MECHANISM PARTS
33-160-4309 PIGEON PRESS CASSE006 6768R-QP04A DECK MECHANISM PARTS
50-093-41299 PIGEON MOTOR(ASSY007 6768RZGP03A DECK MECHANISM PARTS
50-222-41226 PIGEON GEAR ID008 6768R-SP01F DECK MECHANISM PARTS
01-082-4598 PIGEON SPRING CWL4009 6768R-MP01C DECK MECHANISM PARTS
50-219-4014 PIGEON MOLD CWL44011 6768R-SP01A DECK MECHANISM PARTS
01-081-4601 PIGEON SPRING CWL4013 6768RZSP02A DECK MECHANISM PARTS
01-082-4688 PIGEON SPRING015 6768R-AP01A DECK MECHANISM PARTS
50-268-3016 PIGEON ARM CWL44017 6768R-AP01C DECK MECHANISM PARTS
50-239-4072 PIGEON ARM CWL44018 6768R-GP01J DECK MECHANISM PARTS
50-222-4428 PIGEON GEAR CRL442019 6768R-SP01P DECK MECHANISM PARTS
01-081-4678 PIGEON SPRING CRL4020 6768R-BP01C DECK MECHANISM PARTS
02-083-4188 PIGEON BELT/FELT C021 6768R-LP01C DECK MECHANISM PARTS
50-223-4429 PIGEON PULLEY/FLYW022 6768RZVP03A DECK MECHANISM PARTS
50-093-4780 PIGEON SOLENOID023 6768RZGP05A DECK MECHANISM PARTS
50-221-31320 PIGEON GEAR ASSY025 6768RZJP02A DECK MECHANISM PARTS
50-093-31032 PIGEON PULLEY/FLY037 6768R-JP03A DECK MECHANISM PARTS
50-093-4674 PIGEON PULLEY/FLYW4-5 4-6TAPE DECK MECHANISM (A/R &
A/S : RIGHT A/R
DECK)016018007008015019021020017A03009003011013009022025023LOCA.
NO. LG PART NO. DESCRIPTION SPECIFICATIONA00 6720AG0013A DECK,AUDIO
CWN42FR605 TOKYO PIGA03 6768RZHP02A DECK MECHANISM PARTS ASSY
B-DECK PIGEON HEAD003 6768R-PP03A DECK MECHANISM PARTS 33-160-4309
PIGEON PRESS CASSE007 6768RZGP03A DECK MECHANISM PARTS 50-222-41226
PIGEON GEAR ID008 6768R-SP01F DECK MECHANISM PARTS 01-082-4598
PIGEON SPRING CWL4009 6768R-MP01C DECK MECHANISM PARTS 50-219-4014
PIGEON CWL44011 6768R-SP01A DECK MECHANISM PARTS 01-081-4601 PIGEON
SPRING CWL4013 6768RZSP02A DECK MECHANISM PARTS 01-082-4688 PIGEON
SPRING015 6768R-AP01A DECK MECHANISM PARTS 50-268-3016 PIGEON ARM
CWL44016 6768R-GP04A DECK MECHANISM PARTS 50093-41399 PIGEON GEAR
AS017 6768R-AP01C DECK MECHANISM PARTS 50-239-4072 PIGEON ARM
CWL44018 6768R-GP01J DECK MECHANISM PARTS 50-222-4428 PIGEON GEAR
CRL442019 6768R-SP01P DECK MECHANISM PARTS 01-081-4678 PIGEON
SPRING CRL4020 6768R-BP01C DECK MECHANISM PARTS 02-083-4188 PIGEON
BELT/FELT C021 6768R-LP01C DECK MECHANISM PARTS 50-223-4429 PIGEON
PULLEY/FLYW022 6768RZVP03A DECK MECHANISM PARTS 50-093-4780 PIGEON
SOLENOID023 6768RZGP05A DECK MECHANISM PARTS 50-221-31320 PIGEON
GEAR ASSY025 6768RZJP02A DECK MECHANISM PARTS 50-093-31032 PIGEON
PULLEY/FLY4-7 4-8 DECK MECHANISM EXPLODED VIEWSLOCA. NO. PART NO.
DESCRIPTION SPECIFICATIONA26 4405RCS007E MECHANISM ASSEMBLY
DVM-H1523(DP-9 SS P/UP)DVD 3A30 3041RBD003H BASE ASSEMBLY PU
(DVM-H1533 DP-10 SS P/UP) H012 5040R-0110A RUBBER DVD REAR DP8
RIGHT 20 OTHER BL012A 5040R-0110A RUBBER DVD REAR DP8 RIGHT 20
OTHER BL021 4681R-B009C MOTOR ASSEMBLY DECK/MECHA DP-10 FEEDING024
4470R-0179A GEAR DVD DP-9 PINIONMOLD025 4470R-0178A GEAR DVD DP-9
MIDDLE MOLD030 4470R-0180A GEAR DVD DP-9 RACK MOLD035 6871R-9295D
PWB(PCB) ASSEMBLY,TOTAL DP-10 FOR 3 CHANGER FEEDING035A 6850R-JE20Z
CABLE,FLATP=1.0 FFC UL2896(0.05X0.65)11036 4370R-0136A SHAFT DVD
PU, DR-02 SUS-420J2 OTHER151 3390RB0002A TRAY DISC(CDM-H1503)153
4470RB0005A GEAR TRAY (CDM-H1503)155 4681RBA001C MOTOR ASSEMBLY
HOME TRAY (CDM-H1503) MABUCHI156 6871RF9211A PWB(PCB)
ASSEMBLY,FRONT 1503T/D SENSOR159 3390RB0001B TRAY DECK/MECHA
CDM-H1503 MOLD LOAD162 4400R-0012A BELT DECK/MECHA MAIN CDM-H1503V
OTH163 4470R-0190A GEAR DECK/MECHA PULLEY CDM-H1503V M164
4470RB0003A GEAR LOADING (CDM-H1503)165 6871RZ7036A PWB(PCB)
ASSEMBLY,OTHERS CDM-H1503 UP/DW/OP/CL166 4470RB0006A GEAR PU UP
(CDM-H1503)167 4470RB0007A GEAR PU DOWN (CDM-H1503)168 4470RB0002A
GEAR CAM (CDM-H1503)169 4861RB0002B CLAMP ASSEMBLY DVD DVM-H1513170
3550R-0685A COVER DECK/MECHA GUIDE MOTOR CDM-H15172 3040RB0005A
BASE MAIN (CDM-H1503)173 4510RB0001A LEVER S/W CLOSE175 4681RBA002A
MOTOR ASSEMBLY HOME LOADING (PULLEY 8.6)177 4470RB0001A GEAR MAIN
(CDM-H1503)180 3210R-M009A FRAME UD MOLD DVM-H1523V416 88H-0004 CD
MECHA PARTS 3X12X12FNM417 88H-0002 CD MECHA PARTS 3X9X12FZMY418
88H-0003 SCREW,DRAWING #NAME?419 88H-0004 CD MECHA PARTS
3X12X10FZMY422 88H-0005 SCREW #NAME?430 88H-0006 SCREW,DRAWING + 1
D1.7 L7.0 SWCH18A/BZN DP8431 88H-0007 SCREW,DRAWING + 1 D1.7 L4.5
SWCH18A/NI DP8 P432 88H-0008 SCREW,DRAWING + 1 D1.7 L4.5
SWRCH18A/FZY DP8435 88H-0009 SCREW,DRAWING MACHINE439 88H-0010
SCREW,DRAWING + 1 D1.7 L10.0 SWRCH18A/FZW
DP416159422170165164417417167416177175172180166151156418155153168162163419173169012AA30432024430036035438021030439025431435035A012A-
5-1 -SECTION 5. SPEAKER SECTION MODEL:
LMS-K3960V760762761763758757756759753754755752751750A70RIGHTLEFT-
5-2 -
