LG FB162I Service Manual

Mini home theater

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MINI HOME THEATER

SERVICE MANUAL

MODEL : FB162I , FBS162V

CAUTION

BEFORE SERVICING THE UNIT, READ THE "SERVICING PRECAUTIONS"

IN THIS MANUAL.

OCTOBER, 2007

P/NO : AFN35036954

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Troubleshooting

Summary of Contents for LG FB162I

Page 1 Internal Use Only Website http://biz.lgservice.com MINI HOME THEATER SERVICE MANUAL MODEL : FB162I , FBS162V CAUTION BEFORE SERVICING THE UNIT, READ THE “SERVICING PRECAUTIONS” IN THIS MANUAL. OCTOBER, 2007 P/NO : AFN35036954...
Page 2: Table Of Contents
SECTION 6 BLOCK DIAGRAM ................6-1 SECTION 7 CIRCUIT DIAGRAM & VOLTAGE CHART ...........7-1 SECTION 8 PRINTED CIRCUIT DIAGRAMS ............8-1 SECTION 9 REPLACEMENT PARTS LIST ..............9-1 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 3: Section 1 Summary
(Do not use any other liquid cleaners, because they will damage the lens.) Take care not to use too much of this alcohol on the swab, and do not allow the alcohol to get inside the pick-up. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 4 7) The laser beam from the pick-up should NEVER be directly facing the eyes or bare skin. Armband Resistor (1 Mohm) Resistor Conductive (1 Mohm) Sheet Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 5: Esd Precautions
THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE LITERATURE. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 6: Specifications
Max. Input Power 160 W Net Dimensions (W x H x D) 128 x 295 x 240 mm Net Weight 4.1kg Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 8: Section 2 Exploded Views
TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE LITERATURE. P9701 CABLE3 CABLE1 P9702 CN303 P5701 CN302 CABLE2 CN305 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 9: Deck Mechanism Section (Dp-12A)
2. DECK MECHANISM SECTION (DP-12A) 015B 015A 012A LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 10: Speaker Section
3. SPEAKER SECTION(FBS162V) :LEFT SPK ASS'Y A80L :LEFT CABINET ASS'Y :RIGHT SPK ASS'Y A80R :RIGHT CABINET ASS'Y A80A 857L 857R Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 11: Packing Accessory Section
RCA Cable, 1P(Black) Antenna Remote Controller I-POD Cable 814A I-POD Stand Instruction Ass'y 804A Accessory Bag Clear Sheet 803A Packing Packing LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 12: Section 3 Internal Block Diagram Of Ic's
SECTION 3 INTERNAL BLOCK DIAGRAM OF IC’ 1. µPD78F0546R(R) • PIN CONFIGURATION(TOP VIEW) Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 16 Power Dissipation 300 (SOP-8) 800 (DIP-8) 250(TSSOP-8) Operating Temperature Range Topr -40 to+85 °C Storage Temperature Range Tstg -40 to +125 °C Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 17 CH2 driver output(+) REOadj Adjustable regulator feedback VO1- CH1 driver output(-) REBadj Adjustable regulator control VO1+ CH1 driver output(+) BIAS Bias LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 18 Analog column mux input. I, M P0[5] Analog column mux input. I, M P0[3] Analog column mux input, integrating input. Power Ground connection. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 19 Not connected Parallel data output Parallel data output Parallel data output Parallel data output Parallel data output — Output Enable Power supply LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 20 Clock Divider Decimation AINL Modulator Filter LRCK SCLK Decimation AINR Modulator Filter Serial I/O SDTO Interface VCOM Voltage Reference CKS0 CKS2 CKS1 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 21 Audio Interface Format Pin “H”: 24bit I2S Compatible, “L”: 24bit MSB justified CKS2 Mode Select 2 Pin CKS0 Mode Select 0 Pin LGE Internal Use Only 3-10 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 22 GND_B OC_ADJ OUT_B PVDD_B AGND BST_B VREG BST_C PVDD_C OUT_C GND_C PWM_C GND_D RESET_CD OUT_D PWM_D PVDD_D BST_D GVDD_C GVDD_D Copyright © 2007 LG Electronics. Inc. All right reserved. 3-11 LGE Internal Use Only Only for training and service purposes...
Page 23 35 V Hardwire Supply VREG OC Limit System Decoupling Power Supply Power Decoupling Supply GVDD (12 V)/VDD (12 V) 12 V LGE Internal Use Only 3-12 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 24 BTL/PBTL Configuration Pulldown Resistor GND_B GVDD_A BST_A PVDD_A Gate PWM_A Ctrl. Timing OUT_A Rcv. Drive BTL/PBTL Configuration Pulldown Resistor GND_A Copyright © 2007 LG Electronics. Inc. All right reserved. 3-13 LGE Internal Use Only Only for training and service purposes...
Page 25 SO/SDA Host SCK/SCL Reset & Power Down Interface Internal Controls PWM_SWL_P/M SI/I2C_AD0 C, SPI) /CS/I2C_AD2 EPD_ENA EXT_MUTE Power Supply OVERLOAD LGE Internal Use Only 3-14 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 26 Power supply terminal Input of power supply for control circuit Drain terminal MOSFET drain / Input of Startup current Copyright © 2007 LG Electronics. Inc. All right reserved. 3-15 LGE Internal Use Only Only for training and service purposes...
Page 27 Constant Voltage Control Signal Input, Burst(intermittent) mode Oscillation Control OCP/BD Overcurrent Protection Input/ Overcurrent Detection Signal Input Bottom Detection Terminal Bottom Detection Signal Input LGE Internal Use Only 3-16 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 28: Section 4 Electrical Troubleshooting Guide Of Aduio Part
IC101 KIA7042 Check if output voltage Check IC100 78KO/KF2 of IC101 KIA7042 is 4.3V 1 PIN power Replace the related parts Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 29 Check the working condition X101: 32.768kHz Check the related part. X100: 9.8304MHz Replace the related parts Replace the related parts LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 30 Check 25 PIN:5.6V Check power of each PIN Replace the related part Check IC301 PT6324 power 50 PIN VKK: -28V 9.52 PIN +5V Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 31 Check Data output. Check 76 PIN © DO © DATA input FLT light on Check the related part Replace the related part LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 32 IC100 5Pin : CLK, 23Pin : DATA Check resistance output of line CLK : R351 DATA : R358 Replace the related part Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 33 Check PWM MODULATOR Check IC604 PS9829 DATA input output Check resistance FL:75(+)74(-) FR:71(+)70(-) output of each LINE Check IC604 PS9829 part. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 34 4, 6, 14, 16 PIN Check POWER IC 700 34, 29, 27, 20 PIN output. Check output LINE COIL Replace the related parts Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 35 Check IC801 (MC4580) 2, 6PIN input waveform. Check IC801 (MC4580)4PIN VSS, 8PIN VDD power. Refer to SMPS Troubleshooting. Replace the related parts. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 36 16PIN VDD,8PIN VSS power Check IC801(MC4580) 2,6PIN input waveform. Replace the related parts Check IC801(MC4580) 4PIN VSS,8PIN VDD power Replace the related parts Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 37 Check short of P9702 line Chcek the DC V Of Check short of P9701 line C950,C951 If DC V is in 29V LGE Internal Use Only 4-10 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 38 *VKK PART Check the PIN3 OF P9702 Check power circuit If DC V is over -30V ± 1 Trouble shooting Copyright © 2007 LG Electronics. Inc. All right reserved. 4-11 LGE Internal Use Only Only for training and service purposes...
Page 39 Check the P5801 13pin and 30pin line OSD IPOD Check the P5801 18pin, 19pin Check the P5801 18pin and 19pin line LGE Internal Use Only 4-12 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 40: Section 5 Electrical Troubleshooting Guide Of Dvd Part
Does No DISC or Check connector P7501. voltage of each pin on Time are appeared at P5701. FLD? Check DVD MD Module. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 41 Check the Tray control signals on P401 I/O Pin on IC401. are OK? Check the cable connection between DVD PCB and MD (MECHA) LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 42 IC. outputs to motor Focus? driver? Proper F+&F- Check the motor driver (IC401). outputs? Check cable connection with pick-up head. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 43 ES8380. rotate? Check the SPINDLE control of motor driver SPIN+&SPIN- (IC404). output properly? Check the cable connection between P400 and MD LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 44 Check the Tracking control T+&T-output on motor driver (IC401). properly? Check cable connection on pick-up head. Disc play? Check RF signal waveform. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 45 Check the video mute TR (Q411), signal data on ES8380 Output of Video buffer IC (IC407)and is OK? ES8380 video signal data TEST END LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 46 Check the USB JACK POWER supply. Reading OK check (Check P5301) Check the USB DATA LINE.(P5301) Check the IC501 (ES8380). Check DATA LINE PIN 97(USB-No), 98(USB-Po) Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 47 4. WAVEFORMS 1. WHEN POWER ON,RESET &DATA ETC WAVEFORM 1.RESET(DVD) 2.RX 3.TX 4.LCS3#(FLASH) Playing at USB function 1.HRST# 2.5V 3.D- 4.D+ LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 48 2. OPEN/CLOSE WAVEFORM AT POWER ON 1.Limit SW 2.OPEN 3.CLOSE 3. STARTING ACTION WAVEFORM IN MD DEVICE 1.SLO (from MPEG) 2.SLED- 3.SLED+ (At Power on ) Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 49 4. FOCUS WAVEFORM 1.FDO 2.F+ 3.F- (INSERT CD ) (INSERT DVD ) 1.FDO 2.F+ 3.F- LGE Internal Use Only 5-10 Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 50 5. AT POWER ON ,SPINDLE SIGNAL AT MD DECK 1.Spind 2.Spin+ 3.Spin- 6. AT FIRST ACTION,FOCUS SIGNAL A,B,C,D Copyright © 2007 LG Electronics. Inc. All right reserved. 5-11 LGE Internal Use Only Only for training and service purposes...
Page 56 3.5V (278R35) 12V (78R12) MAIN 5V(P-SENS) AC INPUT Switc h 6.1V (KIA278R05) IC #2 P9702 -12V -31.5V(VKK) FL1-FL2 (4.5V) FEED BACK Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 58: Section 7 Circuit Diagram & Voltage Chart
NOT DELAYED UNTIL THE NEW SERVICE LIT- THE ORIGINAL CIRCUIT. SPECIAL COMPO- ERATURE IS PRINTED. NENTS ARE SHADED ON THE SCHEMATIC FOR Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 67 11.8V 111PIN 3.2V 21PIN IC501 26PIN 120PIN 3.29V 29PIN 127PIN 1.47V 34PIN 130PIN 3.29V IC801 177PIN 3.29V 8PIN 11.6V 7-19 7-20 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 68: Section 8 Printed Circuit Diagrams
SECTION 8 PRINTED CIRCUIT DIAGRAMS 1. MAIN P.C.BOARD (TOP SIDE) Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 72 5. SMPS P.C.BOARD NOTES) Warning Parts that are shaded are critical with respect to risk of fire or electricial shock. 8-10 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

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