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LG DP132, Service Manual

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LG DP132 Service Manual Download Page 28

 3-15

ELECTRICAL TROUBLESHOOTING GUIDE

NO

NO

YES

YES

Check the laser power

circuit on SPHE8202RQ-D and

connedting to power transistor.

Check cable connection

between transistor ouput

and pick-up head.

NO

Laser off

NO

NO

YES

Check the related circuit

on PUHRF signal.

Check DVDLDO &

CDLDO signal

YES

YES

NO

NO

YES

Check SCO related

circuit on SPHE8202RQ-D.

NO

YES

Check the spindle control

amp circuit of motor driver

Check the cable

connection between

spindle and main PCBA.

YES

YES

Laser

turns on when

reading disc?

DVDLDO,

CDLDO output

properly?

NO

Check the related circuit on

laser power transistor

Collector

voltage of power

transistor is OK?

Put disc in?

Disc ID

is correct?

Proper

SCO signal on

SPHE8202RQ-D

SLED+

& SLED- output

properly?

Proper PUHRF

signal on OPU

D

Does

spindle rotate?

C

Summary of Contents for DP132

Page 1: ...YER SERVICE MANUAL MODEL DP132 CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL MODEL DP132 SERVICE MANUAL Website http biz lgservice com Internal Use Only P NO AFN75933452 SEPTEMBER 2013 ...

Page 2: ...1 1 CONTENTS SECTION 1 SUMMARY SECTION 2 CABINET MAIN CHASSIS SECTION 3 ELECTRICAL SECTION 4 REPLACEMENT PARTS LIST ...

Page 3: ...PRODUCT SAFETY SERVICING GUIDELINES FOR DVD PRODUCTS 1 3 SERVICING PRECAUTIONS 1 4 GENERAL SERVICING PRECAUTIONS INSULATION CHECKING PRODEDURE ELECTROSTATICALLY SENSITIVE ES DEVICES THE PROCESS OF USB DOWNLOAD 1 5 SPECIFICATIONS 1 8 ...

Page 4: ...zed line plug has not been defeated 3 Soldering must be inspected to discover possible cold solder joints solder splashes or sharp solder points Be certain to remove all loose foreign par ticles 4 Check for physical evidence of damage or deterioration to parts and compo nents for frayed leads or damaged insulation including the AC cord and replace if necessary 5 No lead or component should touch a...

Page 5: ...els Input terminals Earphone jacks etc Electrostatically Sensitive ES Devices Some semiconductor solid state devices can be damaged easily by static electricity Such components commonly are called Electrostatically Sensitive ES Devices Examples of typical ES devices are integrated circuits and some field effect transistors and semiconductor chip components The following techniques should be used t...

Page 6: ...3 9 7 1 3 9 Numerical button Enter key on remote control to confirm the system information 5 Remember or write the model 6 Change the program file name of new version to the model Example New ver program file LG_DV_LVB00B70000EHS_V1 9 ROT Model LG_DV_LVB00B70008EHS ROT Change New ver program file like this LG_DV_LVB00B70008EHS ROT If you don t change the file name like that disc download isn t be ...

Page 7: ...10 If the below picture appears on the screen Press PLAY button on Remote controller While this menu appears please don t eject disc or take out USB 11 After the below picture appears on the screen New DVD program will download from USB Memory stick or Disc automatically Do not eject or take out the USB memory stick ...

Page 8: ...lly 13 Do power off of DVD Player 14 Remove the Disc or USB memory stick 15 Turn on the DVD player Select the initial Language and Press Enter button Then Select Enter and Press Enter button 16 Do it again the process 1 2 3 4 to confirm the version 17 Do power off of DVD Player again ...

Page 9: ...rox 0 9 kg Operating temperature 0 C to 40 C Operating humidity 5 to 90 Laser Semiconductor laser Signal system NTSC Bus Power Supply USB DC 5 V 200 mA VIDEO OUTPUT 1 0 V p p 75 Ω sync negative RCA jack x 1 ANALOG AUDIO OUTPUT 2 0 Vrms 1 kHz 0 dB 600 Ω RCA jack L R x 1 Design and specifications are subject to change without prior notice ...

Page 10: ...2 1 SECTION 2 CABINET MAIN CHASSIS CONTENTS EXPLODED VIEWS 2 2 1 CABINET AND MAIN FRAME SECTION 2 2 2 PACKING ACCESSORY SECTION 2 3 ...

Page 11: ...2 2 250 462 A43 A44 261 260 A B A26 283 300 A46 MAIN BOARD A B SMPS BOARD 462 A47 CABLE2 CABLE1 EXPLODED VIEWS 1 CABINET AND MAIN FRAME SECTION ...

Page 12: ...2 3 2 PACKING ACCESSORY SECTION 801 Owner s manual 813 Plug Ass y 3 way 808 Battery AAA 900 Remote control 804 Packing sheet 802 Box carton 802A 802B ...

Page 13: ...2 4 MEMO ...

Page 14: ...3 20 4 LASER POWER CONTROL RELATED SIGNAL 3 21 5 SPINDLE CONTROL WAVEFORM 3 22 6 FOCUS ON WAVEFORM 3 22 7 TRACKING CONTROL RELATED SIGNAL SYSTEM CHECKING 3 23 8 SPHE8202RQ D AUDIO COAXIAL OUTPUT SPDIF 3 24 9 SPHE8202RQ D VIDEO OUTPUT WAVEFORM 3 24 10 AUDIO OUTPUT FROM SPHE8202RQ D 128 3 25 WIRING DIAGRAM 3 26 CIRCUIT DIAGRAMS 3 27 1 SMPS CIRCUIT DIAGRAM 3 27 2 POWER SUPPLY M_DRIVER OPU_CONNECTOR C...

Page 15: ...ard Q4 C polarity is normal If output voltage 3 3 V is not normal please check the working status of SMPS board 2 Please check if output voltage 5 V from main board XP9 pin11 is normal If output voltage 5 V is not normal please check the working status of SMPS board 3 Please check if output voltage 1 2 V from main board Q5 C polarity is normal If output voltage 1 2 V is not normal please check the...

Page 16: ...r circuit of main board 2 Please check if output voltage 1 2 V from U1 pin10 pin77 pin86 is normal If output voltage 1 2 V is not normal please check 1 2 V power circuit of main board 3 Please check if oscillating frequency 27 MHz of main board Y2 crystal is normal If oscillating frequency 27 MHz is not normal please check if Y2 and its peripheral circuit is in failure 4 Please check if frequency ...

Page 17: ...l circuit 1 Please check if output voltage 3 3 V from IC U2 pin1 3 9 14 27 43 49 is normal If output voltage 3 3 V is not normal please check 3 3 V power circuit of main board 2 Please check every singal connected between IC U2 and IC U1 especially including DATA and ADDRESS signal If DATA and ADDRESS signal is not normally output please check if U2 is in failure Main Board Top View U1 U2 ...

Page 18: ...peripheral circuit 1 Please check if output voltage 3 3 V from IC U3 pin8 is normal If output voltage 3 3 V is not normal please check 3 3 V power circuit of main board 2 Please check every singal connected between IC U3 and IC U1 especially including CE DATA and CLK signal If CE DATA and CLK signal is not normally output please check if U3 is in failure Main Board Top View U1 U3 ...

Page 19: ...al circuit 1 Please check if output voltage 5 V from U4 pin8 pin19 is normal If output voltage 5 V is not normal please check 5 V power circuit of main board 2 Please check every singal connected between IC U4 and IC U1 especially including F F T T SP SP SL SL signal to drive MD If F F T T SP SP SL SL signal is not normally output please check if U4 is in failure Main Board Top View U1 U4 ...

Page 20: ...will read disc nornally but it won t have video output 2 1 Please check the solder joint status of main board connector P1 If P1 has cold solder joint P2 pins should be oxidated and please replace P1 2 2 Please check CVBS signal of main board IC U1 pin69 If CVBS signal is not normally output please check if U1 is in failure Main Board Top View P1 U1 ...

Page 21: ...int P1 pins should be oxidated and please replace P1 3 2 Please check the working status of main board IC U927 If output voltage 5 V from U927 pin7 is not normal please check 5 V power circuit of main board If AL and AR signal from U927 pin1 pin2 pin9 pin10 is not normally output please check if U927 is in failure 3 3 Please check the working status of main board IC U1 If AL and AR signal from U1 ...

Page 22: ... line of main PCB DVD is short Is the F501 T2AL normal Replace the D501 D502 D503 D504 YES NO Is the D501 D502 D503 D504 normal Replace the U501 YES NO Is the U501 TNY176 normal Replace the D505 YES NO Is the D505 normal Replace the U503 YES NO Is there about 2 5V at the U503 Pin1 Replace the U502 YES NO Is the U502 normal ...

Page 23: ...OWER CHECK FLOW Replace the R17 1 8R 2W YES YES No 3 3 V No 1 2 V Check or Replace Q4 Check or Replace Q5 Replace the R20 5 6R 1W YES NO NO NO A B Is M5V supplied to Q4 collector Is M5V supplied to Q5 collector Is M5V supplied to Q5 collector ...

Page 24: ...LLO Tray close to closed position 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 1 Stop playback open Tray 2 Display tray open message LOGO NO YES YES NO YES YES NO NO Tray closed SLED at inner side Recieve OPEN CLOSE Key Receive CLOSE Key ...

Page 25: ...PCBA YES NO Check or replace Q4 or Q5 YES NO Connect to PC RS232 cable and update the FLASH memory code 1 Check 27MHz system clock 2 Check system reset circuit 3 Check FLASH R W enable signal WR HOLD 4 Check RS232 SIGNALS 5 Check FLASH Memory related circuit NO YES Check the AC Voltage Power PCBA 110V or 220V Update FLASH successfully Is the DC voltage outputs OK 5 V Is 3 3V and 1 2V DC outputs no...

Page 26: ...onnection to TV set NO NO YES Check the load OPEN CLOSE switch NO YES Check the Tray control IO pins on SPHE8202RQ D CD5890 NO YES Check the Tray control amplifying circuit on Motor driver Check the cable connection between main PCBA and loader YES YES YES Show SET Flash memory operates properly Normal OPEN_SW CLOSE_ SW signals Normal OPEN CLOSE signal Normal FAN_TRAY FAN_ TRAY signal Does tray mo...

Page 27: ...and tray close YES YES Check cable connect on with pick up head YES YES Motor Driver DMEA Pin is High Is SPDCO DC Level Higher than 1 65V SP SP output properly Does the SLED move to inner side when it is at outter position NO NO Check FCO connection on SPHE8202RQ D and motor driver Proper FCO outputs to motor driver NO Check the amp circuit on motor driver Proper FOC FOC outputs Optical Lens has m...

Page 28: ... YES YES NO NO YES Check SCO related circuit on SPHE8202RQ D NO YES Check the spindle control amp circuit of motor driver Check the cable connection between spindle and main PCBA YES YES Laser turns on when reading disc DVDLDO CDLDO output properly NO Check the related circuit on laser power transistor Collector voltage of power transistor is OK Put disc in Disc ID is correct Proper SCO signal on ...

Page 29: ...rm Focus on OK Proper signals on A B C D of SPHE8202RQ D NO NO Check the TCO connection on SPHE8202RQ D and motor driver Track on OK Disc is play Properly TCO signal on SPHE8202RQ D NO Check the tracking control amp circuit on motor driver RAD RAD output properly NO NO Check the FCO connection on SPHE8202RQ D and motor driver Check the focus control amp circuit on motor driver Check FCO signal on ...

Page 30: ...dio filter amplify mute circuit NO NO YES Check communication lines on SPHE8203R YES YES TEST END Check the cable connection on Front panel Normal Audio output when disc playback Audio AMP received correct data stream Normal Audio AMP out Commu nications between IR VFD Front panel key SPHE8202RQ D is normally Normal IR VFD Front panel key functions E ...

Page 31: ...LS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING 1 SYSTEM 27MHz CLOCK RESET FLASH R W SIGNAL 1 SPHE8202RQ D main clock is at 27MHz Y2 FIG 1 1 1 2 SPHE8202RQ D reset is active high 3 3V POCN RESET FIG 1 2 2 3 4 1 CLKOUT CLKIN GND Y2 27MHz 30PPM Y2 27MHz 30PPM R25 75 R25 75 C22 33pF 50V NP0 C22 33pF 50V NP0 R26 100K R26 100K C21 33pF 50V NP0 C21 33pF 50V NP0 ...

Page 32: ...NC V_H_SYNC M 5V GND TP47 TP47 TP48 TP48 XP6 4PIN 2 0mm XP6 4PIN 2 0mm 1 1 2 2 3 3 4 4 TP45 TP45 TP46 TP46 8 7 SPI_CE SPI_D1 SPI_CLK SPI_D0 GND GND GND DVCC3 DVCC3 U3 SPI_16Mb_EN25T160 U3 SPI_16Mb_EN25T160 CE 1 SO 2 WP 3 VSS 4 SI 5 SCK 6 HOLD 7 VDD 8 R61 10K R61 10K C52 0 1uF 25V Y5V C52 0 1uF 25V Y5V R90 10K R90 10K C51 0 1uF 25V Y5V C51 0 1uF 25V Y5V R60 10K R60 10K ...

Page 33: ...ND 22 TR_B2 25 VINTK 26 GND 29 GND 30 R21 0 R21 0 R65 1 R65 1 C4 C4 R22 0 R22 0 R23 0 R23 0 R12 0 R12 0 14 15 13 SPDL_S TR_B2 TR_B1 REGO2 RESET FACT FOCUS_S XOPVIN1 XOPVIP1 SL_MOT SP_MOT SL_MOT FACT VREF2 TACT TRACK_S REGO1 SLED_S DRVSB SP_MOT TACT TRAY TRAY SL SL DRVSB LOAD GND GND TP50 TP50 U4 AM5890S U4 AM5890S VINFC 1 VOTR 9 VOTR 10 VOSL 12 REGO2 3 TR_B1 2 VOTK 15 REV 7 VOFC 14 VOFC 13 VCTL 21...

Page 34: ...R36 100 R36 100 Q9 PNP_MMBT8550CLT1 Q9 PNP_MMBT8550CLT1 47uF 16V CE14 47uF 16V CE14 R38 100 R38 100 C23 0 1uF 25V Y5V C23 0 1uF 25V Y5V 18 VREF1 E DVDVR DVDMDI CDVR FACT FACT TACT TACT C D PUHRF A B F PUH_CDLD PUH_DVDLD P GND GND GND TP65 TP65 TP64 TP64 TP43 TP43 TP20 TP20 TP66 TP66 TP42 TP42 R 1 R 1 TP62 TP62 TP67 TP67 C29 25V Y5V C29 25V Y5V TP61 TP61 TP57 TP57 TP63 TP63 TOP XP5 24PIN 0 5mm TOP ...

Page 35: ...25V Y5V C4 0 1uF 25V Y5V R22 0 R22 0 R23 0 R23 0 21 19 20 SPDL_S TR_B2 TR_B1 REGO2 RESET FACT FOCUS_S XOPVIN1 XOPVIP1 SL_MOT SP_MOT SL_MOT FACT VREF2 TACT TRACK_S REGO1 SLED_S DRVSB SP_MOT TACT TRAY TRAY SL SL DRVSB LOAD GND GND TP50 TP50 U4 AM5890S U4 AM5890S VINFC 1 VOTR 9 VOTR 10 VOSL 12 REGO2 3 TR_B1 2 VOTK 15 REV 7 VOFC 14 VOFC 13 VCTL 21 VCC2 19 VCCD 20 RESET 24 BIAS 27 FWD 6 VINSL 4 REGO1 5...

Page 36: ...O1 SLED_S DRVSB SP_MOT TACT SL SL SL SL DRVSB LOAD GND GND GND TP50 TP50 U4 AM5890S U4 AM5890S VINFC 1 VOTR 9 VOTR 10 VOSL 12 REGO2 3 TR_B1 2 VOTK 15 REV 7 VOFC 14 VOFC 13 VCTL 21 VCC2 19 VCCD 20 RESET 24 BIAS 27 FWD 6 VINSL 4 REGO1 5 MUTE 28 VCC1 8 VOSL 11 VOLD 17 VOLD 18 VOTK 16 VINLD 23 GND 22 TR_B2 25 VINTK 26 GND 29 GND 30 1 1 C4 0 1uF 25V Y5V C4 0 1uF 25V Y5V R22 0 R22 0 R23 0 R23 0 ...

Page 37: ...8202RQ D VIDEO OUTPUT WAVEFORM 1 100 COLOR BAR FIG 9 1 28 SPDIF Circuit SPDIF_OUT COAX GND R116 100 R116 100 FB9 500 800mA FB9 500 800mA C87 0 1uF 25V Y5V C87 0 1uF 25V Y5V TP68 TP68 C88 10pF 50V NP0 C88 10pF 50V NP0 C114 47pF 50V N C114 47pF 50V N R113 200 R113 200 ...

Page 38: ...3 25 10 AUDIO OUTPUT FROM SPHE8202RQ D 128 FIG 10 1 ...

Page 39: ... 1 1 6 DVD LOADER 2PIN 2 0 6PIN 2 0 24PIN 0 5 XP2 XP3 XP4 XP5 SPHE8202RQ D AUDIO VIDEO MOTER DRIVER 12 1 XS301 12PIN 2 0 KEY USB AMP LPF P1 AM5890S CVBS M12L64164A EN25T1 COAX FR FL 64M SP SP HOMESW GND SL SL INSW GND USB_DP USB_DM IR_IN MIC GND KEY1 KEY2 LED POWER SUPPLY USB5V GND M5V POWERKEY PI176 ...

Page 40: ...A 1000V D506 FR104 1A 400V D506 FR104 1A 400V R502 150K R502 150K D502 1N4007 1A 1000V D502 1N4007 1A 1000V R507 12K 1 R507 12K 1 D505 1N4007 1A 1000V D505 1N4007 1A 1000V R509 470 R509 470 C502 0 1uF 50V X7R C502 0 1uF 50V X7R D504 1N4007 1A 1000V D504 1N4007 1A 1000V R505 12 4K 1 R505 12 4K 1 ZD502 NC BZX79C9V1 ZD502 NC BZX79C9V1 1500uF 16V CE506 1500uF 16V CE506 D501 1N4007 1A 1000V D501 1N4007...

Page 41: ... Y5V R27 10K R27 10K C7 100pF 50V NP0 C7 100pF 50V NP0 TP62 TP62 R18 20K 1 R18 20K 1 TP27 TP27 R2 4 7K R2 4 7K R48 5 1 R48 5 1 TP67 TP67 R7 220 R7 220 TP72 TP72 C29 0 1uF 25V Y5V C29 0 1uF 25V Y5V TP61 TP61 Q10 PNP_MMBT8550CLT1 Q10 PNP_MMBT8550CLT1 TP21 TP21 C58 1000pF 50V X7R C58 1000pF 50V X7R C6 100pF 50V NP0 C6 100pF 50V NP0 TP50 TP50 TP49 TP49 TP35 TP35 R34 0 R34 0 TP36 TP36 R20 5 6 1W R20 5 ...

Page 42: ...P 91 AD_AVDD 90 AD_AVSS 89 LDSW GPIO40 88 HOME GPIO39 87 VDD_18 86 CLKOUT 85 CLKIN 84 PLL_VDD 83 PLL_VSS 82 USB_AVSS 81 USB_DM 80 USB_DP 79 CDLDO 103 DVDMDI 104 CDMDI 105 SRV_AVDD 106 V21 107 V165 108 DA_AVSS 109 DA_TEO 110 DA_FEO 111 DA_AVDD 112 SPDC_OUT 113 SC_OUT 114 DVDVR 115 DMEA 116 SD_D1 GPIO4 117 SD_D0 GPIO5 118 SD_CLK GPIO6 119 TRAYIN SD_SMD GPIO7 120 TRAYOUT SD_D3 GPIO8 121 SD_D2 GPIO9 1...

Page 43: ...F 50V X7R C64 1000pF 50V X7R 10uF 16V CE363 10uF 16V CE363 C101 100pF 50V NP0 C101 100pF 50V NP0 TP52 TP52 C68 1000pF 50V X7R C68 1000pF 50V X7R 10uF 16V CE364 10uF 16V CE364 C102 1000pF 50V X7R C102 1000pF 50V X7R TP53 TP53 R94 10K R94 10K R132 47K R132 47K C103 1uF 16V Y5V C103 1uF 16V Y5V TP54 TP54 L1 1 0uH 25mA L1 1 0uH 25mA R102 10K R102 10K R135 470 R135 470 C86 100pF 50V NP0 C86 100pF 50V N...

Page 44: ...3mm IR 1 GND 2 VCC 3 C305 1uF 50V Y5V C305 1uF 50V Y5V R307 2K R307 2K XS2 14PIN 2 0mm XS2 14PIN 2 0mm 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 USB P301 USB USB P301 USB 1 2 3 4 5 6 7 8 K303 POWER K303 POWER R308 470 R308 470 LED301 LED_RED LED301 LED_RED K301 OPEN CLOSED K301 OPEN CLOSED C304 47pF 50V NP0 C304 47pF 50V NP0 C301 1uF 10V Y5V NC C301 1uF 10V Y5V NC C306 NC 1...

Page 45: ... 549 ˌˀˣ ˡ ˇ 3 15 3 45 3 317 3 322 ˌˀˣ ˡ ˈ ˏˆˁˇˉ 3 317 1 652 ˌˀˣ ˡ ˉ ˏˆˁˇˉ 3 318 2 995 ˌˀˣ ˡ ˊ ˏˆˁˇˉ 3 303 2 865 ˌˀˣ ˡ ˋ ˏˆˁˇˉ 3 302 2 871 ˌˀˣ ˡ ˌ 0 0 ˌˀˣ ˡ ˏˆˁˇˉ 0 0 393 ˌˀˣ ˡ ˏˆˁˇˉ 0 01 0 167 ˌˀˣ ˡ ˏˆˁˇˉ 0 0 059 ˌˀˣ ˡ ˆ ˏˆˁˇˉ 0 0 129 ˌˀˣ ˡ ˇ ˏˆˁˇˉ 0 0 128 ˌˀˣ ˡ ˈ ˏˆˁˇˉ 0 0 245 ˌˀˣ ˡ ˉ ˏˆˁˇˉ 0 0 277 ˌˀˣ ˡ ˊ 3 15 3 45 3 317 3 322 ˌˀˣ ˡ ˋ 0 0 ˌˀˣ ˡ ˌ ˏˆˁˇˉ 0 0 297 ˌˀˣ ˡˆ ˏˆˁˇˉ 0 0 296 ˌˀˣ ˡˆ ˏˆˁˇˉ ...

Page 46: ...3 39 3 40 PRINTED CIRCUIT BOARD DIAGRAMS 1 MAIN P C BOARD TOP VIEW BOTTOM VIEW ...

Page 47: ...3 41 3 42 2 SMPS P C BOARD TOP VIEW BOTTOM VIEW NOTE Warning Parts that are critical with respect to risk of fire or electrical shock ...

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