LG 42PG6900 Service Manual Download | Manualshive

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Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

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Summary of Contents for 42PG6900

Page 1: ...V SERVICE MANUAL CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS PD84A MODEL 42PG6900 42PG6900 ZF website http biz LGservice com Internal Use Only CH VOL MENU INPUT ENTER ...

Page 2: ...served Only for training and service purposes LGE Internal Use Only CONTENTS CONTENTS 2 SAFETY PRECAUTIONS 3 SPECIFICATION 4 ADJUSTMENT INSTRUCTION 6 BLOCK DIAGRAM 13 EXPLODED VIEW 17 EXPLODED VIEW PARTS LIST 18 SVC SHEET 19 PRINTED CIRCUIT DIAGRAM 36 ...

Page 3: ...by it s Neck Leakage Current Cold Check Antenna Cold Check With the instrument AC plug removed from AC source connect an electrical jumper across the two AC plug prongs Place the AC switch in the on positioin connect one lead of ohm meter to the AC plug prongs tied together and touch other ohm meter lead in turn to each exposed metallic parts such as antenna terminals phone jacks etc If the expose...

Page 4: ...od 1 Performance LGE TV test method followed 2 Demanded other specification Safety CE IEC specification EMC CE IEC V Module General Specification 1 42 Module Display Screen Device Aspect Ratio PDP Module Operating Environment Storage Environment Input Voltage 1 2 3 4 5 6 No Item Specification Remark 42 inch Wide Color Display Module 16 9 PDP42G1 RGB Closed Type Glass Filter 1 Temp 0 40deg 2 Humidi...

Page 5: ...oadcasting system Receiving system Scart Jack 2EA Video Input 2EA S Video Input 1EA Component Input 1EA RGB Input HDMI Input 3EA Audio Input 4EA 1 2 3 4 5 6 7 8 9 10 No Item Specification Remark UK France Germany Spain Sweden Finland Italy 1 PAL BG 2 PAL DK 3 PAL I I 4 DVB T ID TV 5 SECAM L L Analog Upper Heterodyne Digital COFDM PAL SECAM PAL SECAM NTSC PAL SECAM NTSC Y Cb Cr Y Pb Pr RGB PC HDMI ...

Page 6: ...0 60Hz 5 The receiver must be operated for about 5 minutes prior to the adjustment O After RGB Full White in HEAT RUN Mode the receiver must be operated prior to the adjustment O Enter into HEAT RUN MODE 1 Press the POWER ON KEY on R C for adjustment 2 OSD display and screen display PATTERN MODE Set is activated HEAT run without signal generator in this mode Caution If you turn on a still screen m...

Page 7: ...nt 4 Press the G Vol key operate To set then it becomes automatically 5 Auto RGB OK means adjustment is completed 6 Press the G Vol key to operate the set then it becomes automatically 7 Auto RGB OK means the adjustment is completed 3 4 Adjustment of SCART RGB O Standard equipment Master Pattern Generator MSPG 925 etc or same product O Required Equipments 1 Remote controller for adjustment 2 MSPG ...

Page 8: ...2 Adjustment Method 1 Va Adjustment 1 After receiving 100 Full White Pattern HEAT RUN 2 Connect terminal of D M M to Va pin of P811 connect terminal to GND pin of P811 3 After turning VR901 voltage of D M M adjustment as same as Va voltage which on label of panel right top deviation 0 5V 2 Vs Adjustment 1 Input signal RF noise signal 2 Connect terminal of D M M to Vs pin of P811 connect terminal t...

Page 9: ...HDMI 2 EDID DATA 1 Analog RGB Detail EDID Options are below ⓐ ⓑ ⓒ ⓓ ⓔ ⓐ Product ID ⓑ Serial No Controlled on production line ⓒ Week Year Controlled on production line ex Week 03 03 Year 2006 10 ⓓ Model Name Hex ⓔ Checksum Changeable by total EDID data 2 HDMI Detail EDID Options are below ⓐ ⓑ ⓒ ⓓ ⓔ ⓕ ⓐProduct ID ⓑ Serial No Controlled on production line ⓒ Week Year Controlled on production line ex ...

Page 10: ... Enter White Pattern off of service mode and change off on 3 Enter W B ADJUST by pushing G key at 3 W B ADJUST PC for communication through RS 232C UART Baud rate 115200 bps 9 4 Connecting Picture of the Measuring Instrument On Automatic control Inside PATTERN is used when W B is controlled Connect to auto controller or push control R C IN START Enter the mode of White Balance the pattern will com...

Page 11: ... 4 Adjustment Commands LENGTH 84 11 Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 12: ...lave Address A0 A2 A4 A6 A8 Not 00h Reserved by Buffer To EEPROM ADL E2PROM Sub Address 00 FF Data Write data CS CMD LENGTH ADH ADL Data_1 Data_n 2 Command Set Description FOS Default write 7mode data write Vtotal V_Frequency Sync_Polarity Htotal Hstart Vstart 0 Phase Data write Model Name and Serial Number write in EEPROM Delay 20ms 3 Command Set Description FOS Default write 7mode data write Vto...

Page 13: ... 13 Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 656 TP Dec 74LCX541 in 74LCX541 Logics for CI 27MHz VCXO 74LCX157 MUX BLOCK DIAGRAM ...

Page 14: ... 14 Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 15: ... 15 Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 16: ... 16 Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 17: ...0 260 400 900 901 A21 A2 Many electrical and mechanical parts in this chassis have special safety related characteristics These parts are identified by in the Schematic Diagram and EXPLODED VIEW It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent X RADIATION Shock Fire or other Hazards Do not modify the original desig...

Page 18: ... 19 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...

Page 19: ... 20 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...

Page 20: ... 21 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...

Page 21: ... 22 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...

Page 22: ... 23 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...

Page 23: ... 24 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...

Page 24: ... 25 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...

Page 25: ... 26 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...

Page 26: ... 27 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...

Page 27: ... 28 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...

Page 28: ... 29 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...

Page 29: ... 30 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...

Page 30: ... 31 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...

Page 31: ... 32 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...

Page 32: ... 33 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...

Page 33: ... 34 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...

Page 34: ... 35 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...

Page 35: ... 36 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes MAIN TOP ...

Page 36: ... 37 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes MAIN BOTTOM ...

Page 37: ... 38 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes PRE AMP TOP PRE AMP BOTTOM CONTROL TOP CONTROL BOTTOM ...

Page 38: ...May 2008 Printed in Korea P NO MFL48161205 ...

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