LG LH-T3039 Service Manual Download

Page: 21 / 83

Only for training and service purposes

LGE Internal Use Only

2-12

7. AUDIO µ-COM Circuit(DVD & AMP)

Check DVD Module.

Check SMPS.

YES

Power On.

Does

CD/DVD appear at

FLD?

YES

Does

Loading appear

at FLD?

Does

it appear DVD Error

at FLD?

Does Aux,

Scart, opt and FM 87.5

appear at FLD.

YES

Does

no Disc or Time

appear at FLD?

YES

Check

if DVD an audio

micom insert is

OK.

Check Power.

YES

Replace IC101.

YES

Refer to SMPS.

Refer to oscillator circuit.

Check IC101 reset

waveform.

YES

Check

power part of Main

B/D.

Check

oscillator o

X101.

Check

if IC101 Pin5

is high.

YES

Check 3.3V line.

Check power section

circuit.

Check

if IC101 Pin9,36,59 are

high(5V).

Check

if IC101 Pin49

is high.

YES

Summary of Contents for LH-T3039

Page 1: ... LH T3530X LH T3530 SH33SD S W SERVICE MANUAL DVD CD RECEIVER SERVICE MANUAL MODELS LH T3039X LH T3039 SH33SU S W LH T3530X LH T3530 SH33SD S W Website http biz lgservice com Internal Use Only LH T3039X LH T3530X P NO AFN37064424 MAY 2008 ...

Page 2: ...CATIONS 1 8 SECTION 2 ELECTRICAL PART TROUBLESHOOTING GUIDE 2 1 DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING 2 13 INTERNAL BLOCK DIAGRAM OF ICs 2 25 WIRING DIAGRAM 2 45 OVERALL BLOCK DIAGRAM 2 47 CIRCUIT DIAGRAMS 2 49 PRINTED CIRCUIT DIARGAMS 2 69 SECTION 3 EXPLODED VIEWS 3 1 CABINET AND MAIN FRAME SECTION 3 1 DECK MECHANISM EXPLODED VIEW DP 12TV 3 3 PACKING ACCESSORY SECTION 3 5 SPEAKER SEC...

Page 3: ...llation 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 surface If there is dust on the lens surface the dust should be cleaned away by using an air bush such as used for camera lens The lens is held b...

Page 4: ...where there is excessive dust 2 Notes for repair 1 Before replacing a component part first disconnect the power supply lead wire from the unit 2 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 is because there is the ...

Page 5: ... propelled chemicals These can generate electrical charges sufficient to damage ESD devices 6 Do not remove a replacement ESD device from its protective package until immediately before you are ready to install it Most replacement ESD devices are packaged with leads electrically shorted together by conductive foam aluminum foil or comparable conductive materials 7 Immediately before removing the p...

Page 6: ...e control Pause key 1 4 7 2 in order Press number 0 9 Press character A F 1 6 for a while Use arrow key to move to appropriate position and make changes Press pause key once Change will be applied when power OFF ON NAME OPT 1 OPT 2 OPT 3 OPT 4 OPT 5 OPT 6 OPT 7 OPT 8 OPT 9 OPT A OPT B OPT C OPT D OPT E OPT F OPT G HEX 55 41 40 FF 52 05 FC 32 EC 00 00 00 00 00 00 00 DETECT NEW EEPROM OPTION EDIT SC...

Page 7: ... arrow key move to appropriate position and make changes Press ENTER key once FLD write ok or up ok Remote control 2 Front STOP push same timing FLD display E2P CLR or EP CLR Auto power off MODEL LH T3039 NAME HEX OPT 1 17 OPT 2 CA OPT 3 21 OPT 4 27 OPT 5 00 MODEL LH T3530 NAME HEX OPT 1 17 OPT 2 CA OPT 3 20 OPT 4 27 OPT 5 00 DETECT NEW EEPROM OPTION EDIT SCREEN 1 6 SERVICE INFORMATION FOR EEPROM ...

Page 8: ...e started with the upgrade information 4 If the upgrade process is complete the set will be rebooted with Complete message 2 How to update DVD program Update using CD 1 Rename the filename to download as TARGET BIN in upper cases 2 Copy the file to MTK_UPG folder of CD and burn it Ex P MTK_UPG TARGET BIN 3 Insert the CD to the SET then after a while the CD tray will be opened with upgrade informat...

Page 9: ...umidity 5 to 85 AMPLIFIER Output Power Front 45W 45W Rated Output Power 30W THD 10 Center 45W Surround 45W 45W Rated Output Power 30W 4 Ωat 1 kHz THD 10 Subwoofer 75W Rated Output Power 60W 8 Ωat 30 Hz THD 10 SPEAKERS SH33SU Front Rear Center Speaker Passive Subwoofer SH33SU S SH33SU W Impedance 4Ω 8 Ω Net Dimensions 99 x 114 x 86 mm 156 x 325 x 320 mm W x H x D Net Weight 1EA 0 35 kg 3 5 kg SPEAK...

Page 10: ... Power Supply Circuit YES NO Check power plug and power supply circuit NO Check power supply circuit NO Check laser circuit Check focus circuit Check disc NO Check tracking servo circuit NO Check audio circuit Does red power led turn on YES Is power on YES Does red power led turn on YES Does it play YES Does it output audio YES YES Turn power on INSERT POWER CORD OK ...

Page 11: ...t circuit 1 2 NO NO Reconnect it YES YES YES Check if PN103 is ok Red LED turn off NO NO Refer to SMPS part YES YES Check if the front power is ok Is the Digitron on correctly NO NO Check pattern and resoldering YES Check if RC2 is ok Check if the remote control is ok YES Check if all buttons are ok POWER ON Front B D ok 1 2 ...

Page 12: ... SMPS NO Replace R345 R350 Check if the power part of the front is ok YES Check if R345 R350 ok YES Refer to MICOM circuit 2 NO Refer to power SMPS NO Check RM circuit Check if the power part of the front is ok YES NO Refer to MICOM circuit Check if the remote control waveform of PN301 pin5 is ok YES Check if RC2 voltage is ok 5V YES Resolder or Replace RC2 ...

Page 13: ...isters 2 Write RISC code to SDRAM 3 Reset RISC Show LOGO Tray close to closed position SLED at inner side Recieve OPEN CLOSE Key Receive CLOSE Key SLED moves to inner position 1 Judge whether have disc and disc type 2 Jump to related disc reading procedure 1 Execute Pressed Key IR Key 2 System operation routine loop NO NO NO NO YES 1 Stop Playback OpenTray 2 Display tray open message LOGO POWER ON...

Page 14: ... AC voltage Power PCBA 110V or 220V YES NO Check the regulators or diode NO 1 Check 27MHz system clock 2 Check system reset circuit 3 Check FLASH R W enable signal PRD RWR 4 Check FLASH Memory related circuit NO Replace FLASH Are the DCVoltage outputs OK 12V 5 6V 3 5V 5V 7V 34V YES Are 3 5V and 5V DC outputs normal on main PCBA YES YES Update FLASH successfully YES Switch on the Power PCBA TEST A ...

Page 15: ...between SDRAM IC504 MT1389 L and the SDRAM is damaged SDRAM works properly NO Check the related circuit of MT1389 L IC501 Pins99 102 103 104 MT1389 L VIDEO outputs properly Show LOGO NO NO Check the load OPEN CLOSE switch Check AV cable connection between main PCBA and loader MECHA YES YES YES Normal OPEN_SW CLOSE_SW signal NO Check the Tray control IO pins on MT1389 L Normal TROPEN TRCLOSE signal...

Page 16: ...MUTE pin is high NO Check the related circuit of SLEGN Motor Driver DRV_MUTE pin is High NO Check the amp circuit on motor driver SLED and SLED output properly Does the SLED move to inner side when it is at outer position NO NO Check Focus connection on MT1389 L and motor driver Check cable connection with pick up head YES YES Proper Focus outputs to motor dricer NO Check the amp circuit on motor ...

Page 17: ...MT1389 L YES YES DVDLD or CDLD output property NO Check the related circuit on laser power transistor Collector voltage of power transistor is OK Q401 Q402 Laser turns on when reading disc Put disc in NO NO Check the SPINDLE related circuit on MT1389 L Check the cable connection between spindle and main PCB YES YES Proper SPINDLE signal on MT1389 L NO Check the spindle control amp circuit of motor...

Page 18: ...on pick up head YES YES Proper signals on A B C D of MT1389 L NO Check the related circuit on MT1389 L CD DVDCT Proper CD DVDCT signal on MT1389 L Focus on ok NO Check RF signal waveform Disc Playback NO NO Check the related circuit on MT1389 L NO Check the TRACK connection on MT1389 L and motor driver NO Check the tracking control amp circuit on motor driver Proper CD DVDCT signal on MT1389 L YES...

Page 19: ...se Only 2 10 NO NO Check connection between IC704 BCK LRCK ADATAO YES YES Check Digital Amp circuit IC702 IC703 YES YES PWM IC received correct data stream NO Check the related circuit of PWM Check Audio out Pins 55 59 61 62 68 71 75 Normal PWM IC out IC704 Normal Audio output when disc playback E TEST END ...

Page 20: ...y 2 11 6 AMP Protection YES NO OK PROTECTION appears continuously on the FLD YES NO Replace IC101 Is the IC101 pin54 LOW signal 0V YES NO Replace the Q701 and Q702 Is the Q701 and Q702 normal YES YES After unplug power cord connect again YES Power on PROTECTION appears on the FLD Replace ST AMP IC IC702 and IC703 ...

Page 21: ... Does Aux Scart opt and FM 87 5 appear at FLD YES Does no Disc or Time appear at FLD YES Check if DVD an audio micom insert is OK Check Power YES YES YES Replace IC101 YES NO NO NO NO Refer to SMPS NO Refer to oscillator circuit NO Check IC101 reset waveform NO NO YES Check power part of Main B D Check oscillator o X101 Check if IC101 Pin5 is high YES YES YES Check 3 3V line NO Check power section...

Page 22: ...nd service purposes LGE Internal Use Only 2 13 DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING 1 SYSTEM 27MHz CLOCK RESET FLASH R W SIGNAL 1 MT1389 L main clock is at 27MHz X501 1 3 2 4 FIG 1 1 2 MT1389 L reset is high active Power Cord in FIG 1 2 1 1 2 3 4 1 2 3 4 IC501 ...

Page 23: ...ht reserved Only for training and service purposes LGE Internal Use Only 2 14 2 SDRAM CLOCK 1 MT1389 L main clock is at 27MHz X501 DCLK 93MHz Vp p 2 2 Vmax 2 7V FIG 2 1 3 Flash R W enable signal during download Downloading FIG 1 4 1 2 1 1 2 1 ...

Page 24: ...All right reserved Only for training and service purposes LGE Internal Use Only 2 15 3 Tray open waveform FIG 3 3 3 TRAY OPEN CLOSE SIGNAL 1 Tray open close waveform FIG 3 1 2 Tray close waveform FIG 3 2 2 1 3 4 1 2 3 4 1 2 3 4 1 2 3 4 ...

Page 25: ...Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 2 16 4 SLED CONTROL RELATED SIGNAL NO DISC CONDITION FIG 4 1 1 2 3 4 1 2 3 4 ...

Page 26: ...Inc All right reserved Only for training and service purposes LGE Internal Use Only 2 17 6 LASER POWER CONTROL RELATED SIGNAL NO DISC CONDITION FIG 6 1 5 LENS CONTROL RELATED SIGNAL NO DISC CONDITION FIG 5 1 1 3 2 1 3 2 1 2 3 1 2 3 ...

Page 27: ...opyright 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 2 18 FIG 7 2 DVD 7 DISC TYPE JUDGEMENT WAVEFORMS FIG 7 1 DVD 1 2 3 IC501 IC501 1 2 3 1 2 3 ...

Page 29: ...Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 2 20 FIG 8 2 CD 8 FOCUS ON WAVEFORMS FIG 8 1 DVD 1 2 3 1 2 3 4 4 1 2 4 3 IC501 ...

Page 30: ...nc All right reserved Only for training and service purposes LGE Internal Use Only 2 21 9 SPINDLE CONTROL WAVEFORMS NO DISC CONDITION FIG 9 1 10 TRACKING CONTROL RELATED SIGNAL System checking FIG 10 1 DVD 1 2 3 1 1 2 3 1 2 3 4 IC501 ...

Page 31: ...008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 2 22 11 MT1389 L VIDEO OUTPUT WAVEFORMS 1 Full colorbar signal COMPOSIT FIG 11 1 FIG 10 2 CD 3 4 2 1 1 2 4 1 3 ...

Page 32: ... LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 2 23 ASDATA3 1 Audio related Signal FIG 12 1 2 Y FIG 11 2 12 AUDIO OUTPUT FROM mt1389 L 1 1 3 2 IC501 IC501 1 1 2 3 ...

Page 33: ...ctronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 2 24 1 R703 TP704 2 R720 TP711 3 R704 TP707 or R717 TP705 4 R709 TP713 5 R707 TP702 6 R701 TP708 13 DVD AMP WAVEFORMS 6 5 1 4 3 2 ...

Page 34: ...PIO11 GPIO10 7 90 AVDD18_2 DVDD18 AVDD33_1 8 89 GPIO9 XTALI 9 88 GPIO8 XTALO 10 87 GPIO7 CKE AGND33 11 86 RA3 V20 12 85 RA2 V14 13 84 DVDD33 REXT 14 83 RA1 MDI1 15 82 RA0 MDI2 16 81 RA10 LDO1 17 80 BA1 LDO2 18 79 DVSS18 AVDD33_2 19 78 BA0 DMO 20 77 RAS FMO 21 76 CAS TRAY_OPEN 22 75 RWE TRAY_CLOSE 23 74 RA4 TRO 24 73 RA5 FOO 25 72 RA6 26 71 RA7 USB_DP 27 70 RA8 USB_DM 28 69 RA9 VDD33_USB 29 68 DVDD...

Page 35: ...V Encoder Video DAC CVBS Y C Component Video System Parser MPEG 1 2 4 JPEG Video Decoder Audio DSP Audio Ouptut Debug Port SDPIF Audio DAC System CP U IR VFD De interlacer CPPM CPR M DRM 32 bit RISC Motor Drive PCM output Internal 6ch Audio DACs 6ch Audio Analog outputs Audio Mic1 Audio Mic2 Internal Audio ADC USB 2 0 High Speed controller MS SD MMC Card Controller USB 2 0 High Full Speed Device M...

Page 36: ...s pin and AVSS 15 MDI1 Analog Input Laser power monitor input 16 MDI2 Analog Input Laser power monitor input 17 LDO1 Analog Output Laser driver output 18 LDO2 Analog Output Laser driver output 19 AVDD33_2 Analog Power Analog 3 3V power 20 DMO Analog Output Disk motor control output PWM output 21 FMO Analog Output Feed motor control PWM output 22 TRAY_OPEN Analog Output Tray PWM output Tray open ou...

Page 37: ...C circuitry 113 ADACVSS1 Ground Ground pin for audio DAC circuitry 114 ARF LFE GPIO Analog Output 1 Audio DAC sub woofer channel output 2 While internal audio DAC not used a ACLK b GPIO 115 ARS GPIO Analog Output 1 Audio DAC right Surround channel output 2 While internal audio DAC not used a ABCK b GPIO 1 Audio DAC right channel output 2 While internal audio DAC not used 116 AR Analog Output a SDA...

Page 38: ... SF_DO InOut 8mA SR Serial Flash Dout PD SMT 38 SF_DI InOut 8mA SR Serial Flash Din PU SMT 39 SF_CK InOut 8mA SR Serial Flash Clock PD SMT 40 UP1_6 SCL InOut 1 Microcontroller port 1 6 8mA SR 2 I2C clock pin PU SMT 41 UP1_7 SDA InOut 1 Microcontroller port 1 7 4mA SR 2 I2C data pin PU SMT 42 ICE Input Microcontroller ICE mode enable PD SMT 43 PRST Input Power on reset input active low PU SMT 44 IR...

Page 39: ...2 RA6 InOut DRAM address 6 4mA PD 73 RA5 InOut DRAM address 5 4mA PD 74 RA4 InOut DRAM address 4 4mA PD 75 RWE Output DRAM Write enable active low 4mA PD 76 CAS Output DRAM column address strobe active low 4mA PD 77 RAS Output DRAM row address strobe active low 4mA PD 78 BA0 InOut DRAM bank address 0 4mA PD 80 BA1 InOut DRAM bank address 1 4mA PD 81 RA10 InOut DRAM address 10 4mA PD 82 RA0 InOut D...

Page 40: ... A 89 GPIO9 InOut 3 SD_CMD set A 4mA PD 4 ASDATA1 5 ABCK 6 C2 7 RXD1 1 GPIO10 2 SD_CLK set B 3 SD_D0 set A 91 GPIO10 InOut 4 ASDATA0 4mA PD 5 ALRCK 6 HSYN VSYN output 7 C3 8 TXD1 1 GPIO11 2 SD_CMD set B 92 GPIO11 InOut 3 MS_BS set B 4mA PD 4 Audio Mute 5 HSYN VSYN output 6 C4 93 SPDIF GPIO12 InOut 1 SPDIF output 2mA PD 2 GPIO12 1 GPIO13 94 GPIO13 InOut 2 SD_D0 set B 4mA PD 3 ALRCK 4 Audio Mute 5 Y...

Page 43: ... 19 18 17 48 41 16 15 14 13 12 11 10 9 8 7 6 5 4 1 2 3 33 34 35 36 37 38 39 40 42 43 44 45 47 46 P70 INT0 T0LCP AN8 P71 INT1 T0HCP AN9 P72 INT2 T0IN NKIN P73 INT3 T0IN RES XT1 AN10 XT2 AN11 VSS1 CF1 CF2 VDD1 P80 AN0 P81 AN1 P82 AN2 P10 SO0 P11 SI0 SB0 P32 UTX1 P33 URX1 P34 UTX2 P35 URX2 P36 P37 P27 INT5 T1IN P26 INT5 T1IN P25 INT5 T1IN P24 INT5 T1IN INT7 P23INT4 T1IN P22 INT4 T1IN P21 INT4 T1IN P2...

Page 44: ...l Standby control IR PLA Bus interface Port 0 Port 1 SIO0 SIO1 Timer 0 Timer 1 Timer 4 Timer 5 Port 2 Port 7 Port 8 ADC ALU Flash ROM PC ACC B register C register PSW RAR RAM Stack pointer Watchdog timer CF RC X tal MRC Clock generator UART2 On chip Debugger ROM correct PWM2 3 UART1 Base timer Port C Timer 6 INT0 to INT7 Noise filter Port 3 Timer 7 ...

Page 45: ...14 SIO1 data input bus I O P15 SIO1 clock I O P16 Timer 1 PWML output P17 Timer 1 PWMH output beeper output Yes Port 2 8 bit I O port I O specifiable in 1 bit units Pull up resistor can be turned on and off in 1 bit units Other functions P20 INT4 input HOLD reset input timer 1 event input timer 0L capture input timer 0H capture input INT6 input timer 0L capture 1 input P21 to P23 INT4 input HOLD r...

Page 46: ...isable P70 to P73 I O No Port 8 P80 to P86 I O 7 bit I O port I O specifiable in 1 bit units Shared pins AD converter input port AN0 P80 to AN6 P86 No PWM2 PWM3 I O PWM2 and PWM3 output ports General purpose I O available No Port 3 P30 to P37 I O 8 bit I O port I O specifiable in 1 bit units Pull up resistor can be turned on and off in 1 bit units Pin functions P32 UART1 transmit P33 UART1 receive...

Page 47: ... 14 15 16 17 18 19 20 21 22 23 24 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 VLS SDA CDOUT AGND OVFL SCL CCLK AD0 CS AD1 CDIN VLC RESET AIN3A AIN3B AIN2A AIN2B AIN1A AIN1B VA AFILTB VQ TSTO FILT TSTO AIN4A MICIN1 AIN4B MICIN2 AIN5A AIN5B AFILTA TSTO NC NC AGND AGND VA PGAOUTB PGAOUTA AIN6B AIN6A MICBIAS INT VD DGND MCLK LRCK SCLK SDOUT NC NC NC TSTI CS5345 ...

Page 48: ...100 100 AIN1B Right Analog Input 1 AIN2A Left Analog Input 2 10 µF 10 µF 1800 pF 1800 pF 100 k 100 k 100 100 AIN2B Right Analog Input 2 AIN3A Left Analog Input 3 10 µF 10 µF 1800 pF 1800 pF 100 k 100 k 100 100 AIN3B Right Analog Input 3 AIN4A MICIN1 Left Analog Input 4 10 µF 10 µF 1800 pF 1800 pF 100 k 100 k 100 100 AIN4B MICIN2 Right Analog Input 4 AIN5A Left Analog Input 5 10 µF 10 µF 1800 pF 18...

Page 49: ...be left unconnected VLS 36 Serial AudioInterface Power Input Determines the required signal level for the serial audio inter face Refer to the Recommended Operating Conditions for appropriate voltages TSTI 37 Test Pin Input This pin must be connected to ground NC 38 39 40 No Connect These pins are not connected internally and should be tied to ground to minimize any potential coupling effects SDOU...

Page 50: ...R Crystal Oscillator XI N XOUT IO_VDD PLL_DVDD IO_VSS IO_VSS PLL_AVDD IO_VSS PLL_AVSS PLL_DVSS MLRCK MBCK MSDIN0 MIC_LRCK MIC_BCK MIC_MCLK PWM_HP_R_P IO_VSS PWM2_P PWM2_M PWM3_P PWM3_M PWM4_P PWM4_M SPI I2C CS I2C_AD2 SI I2C_AD0 SO SDA SCK SCL RESET SCAN_ENA XIN DVSS IO_VSS IO_VSS IO_VSS DVDD DVSS IO_VDD IO_VSS MSDIN1 MSDIN2 SLRCK SBCK DVSS PWM5_P PWM5_M DVDD TEST_MODE3 DVSS IO_VSS PWM6_P PWM6_M I...

Page 51: ...up De assert High for normal operation XIN 86 Analog Crystal Oscillator input pin XOUT 87 Analog Crystal Oscillator output pin PCM Audio Input Output Interface MBCK 11 I O PCM bit clock input output of main 8 channel audio User can select the master slave mode of this signal Schmitt Trigger input MLRCK 12 I O PCM Word clock left right clock input output of main 8 channel audio User can select the ...

Page 52: ...2_P 52 O Positive PWM output of channel 2 PWM2_M 51 O Negative PWM output of channel 2 PWM3_P 55 O Positive PWM output of channel 3 PWM3_M 54 O Negative PWM output of channel 3 PWM4_P 59 O Positive PWM output of channel 4 PWM4_M 58 O Negative PWM output of channel 4 PWM5_P 62 O Positive PWM output of channel 5 PWM5_M 61 O Negative PWM output of channel 5 PWM6_P 68 O Positive PWM output of channel ...

Page 53: ... outputs go to LOW That shutdown process is programmable Internal pull down resistor EPD_ENA 77 O External amplifier power device enable output Active High Test Mode TEST_MODE1 97 I Test mode selection pin 1 In normal operation it should be LOW or not connected Internal pull down resistor TEST_MODE2 98 I Test mode selection pin 2 In normal operation it should be LOW or not connected Internal pull ...

Page 56: ...R NO CIR CUMSTANCES SHOULD THE ORIGINAL DESIGN BE MODIFIED OR ALTERED WITHOUT PERMISSION FROM THE LG CORPORATION ALL COMPONENTS SHOULD BE REPLACED ONLY WITH TYPES IDENTI CAL TO THOSE IN THE ORIGINAL CIRCUIT SPECIAL COMPONENTS ARE SHADED ON THE SCHEMATIC FOR EASY IDENTIFICATION THIS CIRCUIT DIAGRAM MAY OCCASIONALLY DIF FER FROM THE ACTUAL CIRCUIT USED THIS WAY IMPLEMENTATION OF THE LATEST SAFETY AN...

Page 57: ...008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 2 51 2 52 2 MPEG CIRCUIT DIAGRAM 2007 11 30 A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T ...

Page 58: ...08 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 2 53 2 54 3 SERVO CIRCUIT DIAGRAM 2007 11 30 A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T ...

Page 59: ...08 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 2 55 2 56 4 MICOM CIRCUIT DIAGRAM 2007 11 30 A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T ...

Page 60: ...008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 2 57 2 58 5 I O CIRCUIT DIAGRAM 2007 11 30 A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T ...

Page 61: ...008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 2 59 2 60 6 AMP CIRCUIT DIAGRAM 2007 11 30 A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T ...

Page 62: ...008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 2 61 2 62 7 MIC CIRCUIT DIAGRAM 2007 11 30 A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T ...

Page 63: ...08 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 2 63 2 64 8 FRONT CIRCUIT DIAGRAM 2007 11 30 A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T ...

Page 64: ...WR KEY CIRCUIT DIAGRAM Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 2007 11 30 A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T ...

Page 65: ...C USB PTB CIRCUIT DIAGRAM 2007 11 30 A 1 2 3 4 5 6 7 8 9 10 11 12 B C D E F G H I J K L M N O P Q R S T Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 66: ...Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 2 69 2 70 PRINTED CIRCUIT BOARD DIAGRAMS 1 MAIN P C BOARD DIAGRAM TOP VIEW ...

Page 68: ...tronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 2 73 2 74 2 SMPS P C BOARD DIAGRAM NOTE Warning Parts that are shaded are critical With respect to risk of fire or electrical shock ...

Page 69: ...t reserved Only for training and service purposes LGE Internal Use Only TIMER P C BOARD DIAGRAM LH T3530 2 75 2 76 3 TIMER P C BOARD DIAGRAM LH T3039 4 KEY P C BOARD DIAGRAM LH T3039 5 FRONT JACK P C BOARD DIAGRAM KEY P C BOARD DIAGRAM LH T3530 ...

Page 70: ...75 A B C E C D E A B 279 A50 A43 CABLE1 PN302 283 463 A47 A41 463 463 A46 300 275 467 D 262 261 260 261 A44 462 250 462 465 NOTES THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE LITERATURE FRONT JACK SMPS MAIN PN202 465 SECTION 3 EXPLODED VIEWS 463 ...

Page 71: ...ics Inc All right reserved Only for training and service purposes LGE Internal Use Only DECK MECHANISM EXPLODED VIEW DP 12TV 012 010 012 037 012A 019 442 442 A02 A01 A03 001 002 003 439 018 013 017 014 020 016 440 015 015B 015A 435 026 ...

Page 72: ...ice purposes LGE Internal Use Only PACKING ACCESSORY SECTION BATTERY 808 OWNER S MANUAL 801 REMOTE CONTROL 900 BAG 804 PACKING CASING 803 BOX 802 PACKING CASING 803 825 FM WIRE ANTENNA 824 AM LOOP ANTENNA RCA CABLE VIDEO 1WAY 811 PORTABLE IN CABLE 818 832 KARAOKE DISC MICRO PHONE 827 ...

Page 73: ...ly for training and service purposes LGE Internal Use Only 1 SATELLITE SPEAKER SH33SU S 853 852 850 851 WIRE84 WIRE83 WIRE82 WIRE81 WIRE80 A83 A82 A81 A80 F L SPK F L SPK F R SPK CENTER SPK R L SPK R R SPK F R SPK R L SPK CENTER SPK R R SPK A84 SPEAKER SECTION ...

Page 74: ...2 PASSIVE SUBWOOFER SH33SU W 950 A90 951 953 956 954 952 955 WIRE90 3 7 Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 75: ...2 A81 A80 F L SPK WIRE84 WIRE83 WIRE82 WIRE81 WIRE80 F L SPK F R SPK CENTER SPK R L SPK R R SPK F R SPK R L SPK CENTER SPK R R SPK A84 3 8 Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 76: ...4 PASSIVE SUBWOOFER SH33SD W 950 A90 951 953 956 954 952 955 WIRE90 3 9 Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 78: ...ECHANISM DISASSEMBLY 1 Main Base 4 3 1 1 Clamp Assembly Disc 4 3 1 1 1 Plate Clamp 4 3 1 1 2 Magnet Clamp 4 3 1 1 3 Clamp Upper 4 3 2 Tray Disc 4 3 3 Base Assembly Sled 4 4 3 1 Gear Feed 4 4 3 2 Gear Middle 4 4 3 3 Gear Rack 4 4 4 Rubber Rear 4 4 5 Frame Assembly Up Down 4 5 6 Belt Loading 4 5 7 Gear Pulley 4 5 8 Gear Loading 4 5 9 Guide Up Down 4 5 10 PWB Assembly Loading 4 5 11 Base Main 4 5 EXP...

Page 79: ...ed Gear Feed Gear Middle Gear Rack Rubber Rear Frame Assembly Up Down Belt Loading Gear Pulley Gear Loading Guide Up Down PWB Assembly Loading Base Main 4 Screws 1 Connector 1 Locking Tabs 1 Screw 1 Screw 1 Locking Tab 1 Locking Tab 1 Locking Tab 1 Hook 2Screw 2 Locking Tabs 4 1 4 1 4 1 4 1 4 1 4 2 4 3 4 3 4 3 4 3 4 3 4 4 4 4 4 4 4 4 4 4 4 4 4 4 Bottom Bottom Procedure Parts Fixing Type Fig ure Di...

Page 80: ...e Clamp to counterclockwise direction and then lift up the Plate Clamp 1 1 2 Magnet Clamp 1 1 3 Clamp Upper 2 Tray Disc Fig 4 2 1 Insert and push a Driver in the emergency eject hole A at the right side or put the Driver on the Lever B of the Gear Emergency and pull the Lever B in direction of arrow so that the Tray Disc is ejected about 15 20mm 2 Pull the Tray Disc until it is separated from the ...

Page 81: ...S2 2 Disconnect the FFC Connector C1 3 1 Gear Feed 3 2 Gear Middle 3 3 Gear Rack 1 Release the Scerw S3 4 Rubber Rear Fig 4 3 BASE PU RUBBER DAMPER RUBBER DAMPER RUBBER DAMPER Distinguish upper and lower sides Assemble with care Distinguish upper and lower sides Assemble with care RUBBER DAMPER GEAR RACK GENERAL PICK UP ASSEMBLY SPINDLE MOTOR ASSEMBLY Fig 4 3 S2 S2 ...

Page 82: ...ar Pulley from the Base Main 8 Gear Loading Fig 4 4 9 Guide Up Down Fig 4 4 1 Move the Guide Up Down in direction of arrow A as Fig A 2 Push the Locking Tab L5 down and then lift up the Guide Up Down to separate it from the Base Main Note When reassembling place the Guide Up Down as Fig C and move it in direction arrow B until it is locked by the Locking Tab L5 And confirm the Guide Up Down as Fig...

Page 83: ...s Inc All right reserved Only for training and service purposes LGE Internal Use Only 012 010 012 012A 019 442 442 A02 A01 A03 001 002 003 439 018 013 017 014 020 016 440 015 015B 015A 435 026 DECK MECHANISM EXPLODED VIEW DP 12TV 037 ...

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