Download
Share
Print this page
LG 50PM4700 Service Manual
  1. Manuals
  2. Brands
  3. LG Manuals
  4. Plasma TV
  5. 50PM4700
  6. Service manual

LG 50PM4700 Service Manual

Hide thumbs Also See for 50PM4700:

Advertisement

Quick Links

Download this manual
PLASMA TV
SERVICE MANUAL
CHASSIS : PB22A
MODEL : 50PM4700
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL67451002 (1203-REV00)
North/Latin America
Europe/Africa
Asia/Oceania
50PM4700-DA
Internal Use Only
http://aic.lgservice.com
http://eic.lgservice.com
http://biz.lgservice.com
Printed in Korea

Advertisement

loading

Related Manuals for LG 50PM4700

Summary of Contents for LG 50PM4700

  • Page 1 Internal Use Only North/Latin America http://aic.lgservice.com Europe/Africa http://eic.lgservice.com Asia/Oceania http://biz.lgservice.com PLASMA TV SERVICE MANUAL CHASSIS : PB22A MODEL : 50PM4700 50PM4700-DA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : MFL67451002 (1203-REV00) Printed in Korea...

  • Page 2: Table Of Contents

    SPECIFICATION ..............4 ADJUSTMENT INSTRUCTION ..........5 BLOCK DIAGRAM ..............11 EXPLODED VIEW ..............12 SCHEMATIC CIRCUIT DIAGRAM ..........- 2 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 3: Safety Precautions

    An other abnormality exists that must be corrected before the receiver is returned to the customer. - 3 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 4: Specification

    2) Humidity : ~ 80 % Storage Environment 1) Temp : -20 ~ 60 deg 2) Humidity : ~ 85 % - 4 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 5: Adjustment Instruction

    3.3. Additional ■ Selection Factory output option ■ S/W Download Guide * Condition spec Mode Volume Power Off DC On - 5 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 6 -> GP4 (PU22A/PB22A/PK22A) Chassis don’t need EDID Download process. Whenever TV power on, the EDID data was written on inner memory. - 6 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 7 ■ Color Analyzer Matrix should be calibrated using CS-1000 ■ Offset adjust limit value. Offset Min = 34 (Decimal) Offset Max = 94 (Decimal) - 7 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 8 Ez-Adjust mode. Then with ADJ button, exit from adjustment mode WARM 0.313 0.329 6500K 0.0000 * Attachment: White Balance adjustment coordination and color temperature. - 8 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 9 (2) connect each other LAN Port Jack. like below) (3) Play Test (F9) button and confirm OK Message. (4) remove LAN CABLE - 9 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 10 Tool option 3 9039 Tool option 4 29294 Tool option 5 6741 Tool option 6 1689 Tool option 7 - 10 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 11: Block Diagram

    BLOCK DIAGRAM - 11 - Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 12: Exploded View

    X-RADIATION, Shock, Fire, or other Hazards. Do not modify the original design without permission of manufacturer. Copyright © LG Electronics. Inc. All rights reserved. LGE Internal Use Only - 12 - Only for training and service purposes...
  • Page 13 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 14 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 15 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 16 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 17 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 18 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 19 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. PCMCI Slot/WiFi/PEN Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 20 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 21 ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. MICOM,SUB ASSY Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 22 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 23 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 24 FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 26 LGE Internal Use Only Training manual (PB22A) Contents 1. System Design 2. Trouble Shooting Guide Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 27 Main Board for GP4 PDP Power 18pin LVDS 80P Main processor Micom DDR3 Speaker 4pin EMMC IR/ RF Emitter 16pin Audio Amp Wifi 4pin Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 28 X board Emitter 50PM6700-SD Model block diagram 50PM6700-SD Model Image Z Board Power Board Y Board ASIC Main Wifi X board Emitter Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 29 ■ no dongle PM680,PM670 assessory function ready other models Emitter PM690 ■ built in pen (Pen Touch dongle WiFi Model) Dongle Dongle Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 30 IR & RF Cables 2012 GP4 Ass’y & Cables 2012 GP4 Cable Arrangement Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 31 ⑤ Adjusting Voltage (Set up/-Vy/Vsc/Ve/Vzb) ⑭ Max. Amps ⑥ The trade name of LG Electronics ⑦ Manufactured date(Year & Month) ⑧ Warning Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 32 MTK GPIO PIN MAP – MTK Reference B/D Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 33 Digital TV Audio Trouble Shooting while recording (Watch & Record) Analog TV Video Trouble Shooting while recording (Watch & Record) Analog TV Audio Trouble Shooting while recording (Watch & Record) Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 34 Replace one of IC1102 & Recheck at C1130 Replace one of IC400 ~ 403 Replace IC103 EMMC Memory Replace IC100 & Recheck & Recheck Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 35 Measure point Measure point L1100 : 17V L1101 : 5V P1100 Measure point PSU_ERR L1102 : 5V _ST 5V_ST RL_ON AC_DET MOD_ON Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 36 Measure point Typ. 3.3V Measure point Typ. 1.5V C110 C112 C113 Measure point Typ. 1.2V Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 37 RGB_LR I2S Out CVBS CVBS/COMP2 X-TAL Micom COMP (32.768kHz) (Renesas COMP1 COMP RF Emitter OPTIC SPDIF OUT Module(Bluetooth) UART RS-232C Ethernet Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 38 & Recheck Check all multi voltage Check power up boot sequence (12v, 3.3v, 1.2v) Check LVDS Cable Replace Cable Check PDP Module Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 39 RGB_LR I2S Out CVBS CVBS/COMP2 X-TAL COMP Micom (32.768kHz) (Renesas COMP1 COMP RF Emitter OPTIC SPDIF OUT Module(Bluetooth) UART RS-232C Ethernet Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 40 2. Check Tuner I2C level (Pin #3, #4) 3. Check Ts level (Pin #21, #22, #23, #24, #25, #26, #27) 4. Check Ts Signal Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 41 RGB_LR I2S Out CVBS CVBS/COMP2 X-TAL COMP Micom (32.768kHz) (Renesas COMP1 COMP RF Emitter OPTIC SPDIF OUT Module(Bluetooth) UART RS-232C Ethernet Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 42 1. Check Tuner power (Pin #5, #7,#12, #13) 2. Check Tuner I2C level (Pin #3, #4) 3. Check Video signal (Pin #8) Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 43 RGB_LR I2S Out CVBS CVBS/COMP2 COMP X-TAL Micom COMP1 (32.768kHz) COMP (Renesas RF Emitter OPTIC SPDIF OUT Module(Bluetooth) UART RS-232C Ethernet Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 44 Replace one of Check Component Signal R507/R520/R523/R532/R534/R550 R507/R520/R523/R532/R534/R550 & Recheck Check Component Signal Replace it C257/C216/C212/C224/C223/C219 Maybe BCM2112 (IC100) has problems Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 45 1920 X 1080 (i) Dot Freq : 74.25 MHz H - Freq : 33.75 kHz V – Freq : 60 Hz Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 46 RGB_LR I2S Out CVBS CVBS/COMP2 X-TAL COMP Micom (32.768kHz) (Renesas COMP1 COMP RF Emitter OPTIC SPDIF OUT Module(Bluetooth) UART RS-232C Ethernet Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 47 Check RGB Signal Replace It & Recheck R510/R511/R512 Check Sync Signal Replace one of R514/R515 R514/R515 & Recheck` Maybe BCM2112 (IC100) has problems Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 48 800 X 600 (p) Dot Freq : 40 MHz H - Freq : 37.879 kHz V – Freq : 60.317 Hz Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 49 RGB_LR I2S Out CVBS CVBS/COMP2 COMP X-TAL Micom COMP1 (32.768kHz) COMP (Renesas RF Emitter OPTIC SPDIF OUT Module(Bluetooth) UART RS-232C Ethernet Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 50 720 X 480 (i) Dot Freq : 13.5 MHz H - Freq : 15.734 kHz V – Freq : 59.939 Hz Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 51 RGB_LR I2S Out CVBS CVBS/COMP2 X-TAL COMP Micom (32.768kHz) (Renesas COMP1 COMP RF Emitter OPTIC SPDIF OUT Module(Bluetooth) UART RS-232C Ethernet Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 52 Check HDMI Cable Check EDID D/L Re-Download EDID Check HDMI Jack Replace Jack JK600, JK601, JK602, JK603 Maybe BCM2112 (IC100) has problems Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 53 RGB_LR I2S Out CVBS CVBS/COMP2 X-TAL COMP Micom (32.768kHz) (Renesas COMP1 COMP RF Emitter OPTIC SPDIF OUT Module(Bluetooth) UART RS-232C Ethernet Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 54 Check IC800 Power Replace It & Recheck 17V, 3.3V Check BCM2112 I2S Output Replace It & Recheck AR800 Maybe BCM2112 (IC100) has problems Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 55 RGB_LR I2S Out CVBS CVBS/COMP2 X-TAL COMP Micom (32.768kHz) (Renesas COMP1 COMP RF Emitter OPTIC SPDIF OUT Module(Bluetooth) UART RS-232C Ethernet Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 56 Check video output trouble shooting Follow procedure All source audio Maybe BCM2112 internal audio DSP trouble shooting has problems. Replace It Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 57 RGB_LR I2S Out CVBS CVBS/COMP2 X-TAL COMP Micom (32.768kHz) (Renesas COMP1 COMP RF Emitter OPTIC SPDIF OUT Module(Bluetooth) UART RS-232C Ethernet Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 58 Q1001, C1000, R1006, R1012, R1013 C241 & Recheck Follow procedure All source audio Maybe BCM2112 audio block has trouble shooting problems. Replace It Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 59 RGB_LR I2S Out CVBS CVBS/COMP2 X-TAL COMP Micom (32.768kHz) (Renesas COMP1 COMP RF Emitter OPTIC SPDIF OUT Module(Bluetooth) UART RS-232C Ethernet Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 60 Check Signal C537/C538/C539/540/C541/C542 & C537/C538/C539/540/C541/C542 Recheck Follow procedure All source audio Maybe BCM2112 audio block has trouble shooting problems. Replace It Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 61 RGB_LR I2S Out CVBS CVBS/COMP2 X-TAL COMP Micom (32.768kHz) (Renesas COMP1 COMP RF Emitter OPTIC SPDIF OUT Module(Bluetooth) UART RS-232C Ethernet Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 62 Check EDID Pull-Up Voltage 605/R607 & Recheck Follow procedure All source audio Maybe BCM2112audio block has trouble shooting problems. Replace it Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 63 RGB_LR I2S Out CVBS CVBS/COMP2 X-TAL COMP Micom (32.768kHz) (Renesas COMP1 COMP RF Emitter OPTIC SPDIF OUT Module(Bluetooth) UART RS-232C Ethernet Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 64 - USB power could be disabled by inrushing current - In this case, remove the device and try to reboot the TV (AC power off/on) Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 65 RGB_LR I2S Out CVBS CVBS/COMP2 X-TAL COMP Micom (32.768kH (Renesas COMP1 COMP RF Emitter OPTIC SPDIF OUT Module UART RS-232C Ethernet Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 66 Check HDD Replace HDD Check USB block Use USB Trouble shooting guide Maybe BCM2112(IC100) USB block has problems. Replace It. Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 67 RGB_LR I2S Out CVBS CVBS/COMP2 X-TAL COMP Micom (32.768kH (Renesas COMP1 COMP RF Emitter OPTIC SPDIF OUT Module UART RS-232C Ethernet Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 68 16. OPTIC Audio Out Trouble Shooting Check SPDIF signal (R506) Replace BCM2112 Check Signal (JK505 #3) Maybe BCM2112 (IC100) has problems. Replace It. Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 69 RGB_LR I2S Out CVBS CVBS/COMP2 X-TAL COMP Micom (32.768kH (Renesas COMP1 COMP RF Emitter OPTIC SPDIF OUT Module UART RS-232C Ethernet Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 70 Check Wifi Cable Check 5V voltage level at Replace one of L700 L700& Recheck Maybe BCM2112 (IC100) has problems. Replace It. Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 71 2 x 2 [Tx, Rx] 2 stream spatial Multi Speed 300Mbps ODM Company Arcadyan, LGIT Supply Type Dongle Type & Built In Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 72 RGB_LR I2S Out CVBS CVBS/COMP2 X-TAL COMP Micom (32.768kHz) (Renesas COMP1 COMP RF Emitter OPTIC SPDIF OUT Module(Bluetooth) UART RS-232C Ethernet Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 73 Check 3D Emitter Cable Check 5V voltage level at Replace one of L900 L900& Recheck Maybe BCM2112 (IC100) has problems. Replace It. Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 74 DTV • F/W update (Not Use) • 3D left/right frame sync signal 3D_SYNC_RF from DTV ( 60Hz, 59.94Hz,50Hz, 48Hz, 47.95Hz) Copyright © 2012 LG Electronics Inc. All rights reserved. LGE Internal Use Only Only for training and service purposes...

This manual is also suitable for:

50pm4700-da