LG 50PW450 Service Manual

LG 50PW450 Manual

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  • LG 50PW450 | Service Manual - Page 1
    Only http://aic.lgservice.com http://eic.lgservice.com http://biz.lgservice.com PLASMA TV SERVICE MANUAL CHASSIS : PD11A MODEL : 42PW450 /450A/450N/450T MODEL : 42PW451 /451A 42PW450/450A/450N/450T-ZA/ CAUTION 42PW451/451A-ZD BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS
  • LG 50PW450 | Service Manual - Page 2
    CONTENTS CONTENTS ...2 SAFETY PRECAUTIONS ...3 SPECIFICATION ...4 ADJUSTMENT INSTRUCTION 6 BLOCK DIAGRAM ...14 EXPLODED VIEW ...15 CIRCUIT DIAGRAM ... Copyright ©2011 LG Electronics Inc. All rights reserved. Only for training and service purposes -2- LGE Internal Use Only
  • LG 50PW450 | Service Manual - Page 3
    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 CONDUIT etc. 1.5 Kohm/10W Copyright ©2011 LG Electronics Inc. All rights reserved. Only for training and service purposes -3- LGE Internal Use Only
  • LG 50PW450 | Service Manual - Page 4
    be operated for about 20 minutes prior to the adjustment. V Test Method (1) Performance : LGE TV test method followed. (2) Demanded other specification Safety : CE, IEC specification, EMC : CE, IEC Model Name Market 42PW450-ZA Albania, Austria, Belgium, Bosnia, Bulgaria, Coratia, Czech, Denmark
  • LG 50PW450 | Service Manual - Page 5
    Pb/Pr RGB-PC Analog (D-Sub 15Pin) HDMI-PC HDMI/DVI,HDMI2, HDMI3 HDMI-DTV RGB/DVI Audio, Component, AV L/R Input SPDIF Out For SVC, S/W Download, DivX For UK models Copyright ©2011 LG Electronics Inc. All rights reserved. Only for training and service purposes -5- LGE Internal Use Only
  • LG 50PW450 | Service Manual - Page 6
    ADJUSTMENT INSTRUCTION 1. Application Range This spec sheet is applied to all of the PDP TV with PD11A chassis. 2. Specification (1) (7) After downloadng, check "OK" message. Copyright ©2011 LG Electronics Inc. All rights reserved. Only for training and service purposes -6- LGE Internal Use Only
  • LG 50PW450 | Service Manual - Page 7
    37966 54144 28940 544 50PW450T-ZA 50T3 37056 37966 54144 28940 544 42PW450T-ZA 42T3 24768 37966 54144 28940 544 50PV350T-ZA 50R3 37216 21582 54144 28940 544 60PV250T-ZA 60R3 49536 21582 54144 28940 544 (5) Updating Completed, The TV will restart automatically. (6) If your TV is turned on, check
  • LG 50PW450 | Service Manual - Page 8
    to CSM and Module CSM PLASMA Cool 11000K Medium 9300K Warm and sound - Check Input and Signal items. (cf. work instructions) (1) TV (2) AV (SCART1/SCART2/ CVBS) (3) COMPONENT (480i) (4) LG Electronics Inc. All rights reserved. Only for training and service purposes -8- LGE Internal Use Only
  • LG 50PW450 | Service Manual - Page 9
    Module) * Manual W/B process using adjusts Remote control. (1) After enter Service Mode by Condition: (100~240V@ 50/60Hz) (3) Confirm DPM Model download option (The use of download a internal pattern) Copyright ©2011 LG Electronics Inc. All rights reserved. Only for training and service
  • LG 50PW450 | Service Manual - Page 10
    7-8. Manual Download * Caution * Use the proper signal cable for EDID 3D - HD RGB EDID data (4) 3D - HD HDMI3 EDID data (2) 3D - HD HDMI1 EDID data ˃ Vender ID O Checksum: Changeable by total EDID data. Copyright ©2011 LG Electronics Inc. All rights reserved. Only for training and service
  • LG 50PW450 | Service Manual - Page 11
    81) (1) Please input 3D test pattern like below 11. Model name & Serial number download 11-1. Model name & Serial number D/L (2) Enter 3D mode , then select side by side (If you don't wear a 3D Glasses, you will see the picture like below) (1) Press "Power on" key of service remocon.(Baud rate
  • LG 50PW450 | Service Manual - Page 12
    + Data_1 + ... + Data_n Delay : 20ms 5) Check the Diagnostics (DTV country only) ? Buyer model displayed (ex 42LD450) 11-3. Command Set 12. CI+ Key Download [ book 4.0 * Manual Download (Model Name and Serial Number) - If the TV set is downloaded By OTA or Service man, Sometimes model name or
  • LG 50PW450 | Service Manual - Page 13
    13. SW Download Guide. œ Put a *.bin to USB Stick and Turn on TV (1) Put the USB Stick to the USB socket (2) Automatically detecting update file in USB TV turn on, check the Updated version on Diagnostics MENU. Copyright ©2011 LG Electronics Inc. All rights reserved. Only for training and service
  • LG 50PW450 | Service Manual - Page 14
    BLOCK DIAGRAM Copyright ©2011 LG Electronics Inc. All rights reserved. Only for training and service purposes - 14 - LGE Internal Use Only
  • LG 50PW450 | Service Manual - Page 15
    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 design without permission of manufacturer. 400 601 520 207 206
  • LG 50PW450 | Service Manual - Page 16
    EU B R164 1K EU R165 1K EU C119 0.1uF 16V READY DTV/MNT_VOUT C121 100uF 16V EU R173 18K EU R174 10K EU R176 470 44 10 45 11 46 12 47 13 48 14 49 15 50 16 51 17 52 18 R135 0 53 19 READY 54 20 AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY
  • LG 50PW450 | Service Manual - Page 17
    THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2011 LG Electronics Inc. All rights reserved. Only for training and service purposes GP2R_S7R HDMI/RGB/RS232C/USB COMP2/Side CVBS/SPDIF 2010-08-31 2 LGE Internal Use Only
  • LG 50PW450 | Service Manual - Page 18
    32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 LVDS +3.3V R781 R807 2.2K 0 R809 4.7K S G D P_SDA Q701 2N7002(F) SYMBOL MARK OF THE SCHEMETIC. Copyright © 2011 LG Electronics Inc. All rights reserved. Only for training and service purposes GP2R_S7R Tuner/Audio Amp LVDS / Key-
  • LG 50PW450 | Service Manual - Page 19
    SIDEAV_CVBS_IN SC2_CVBS_IN DTV/MNT_VOUT C400 1000pF RESET NC_16 1K MODEL OPTION PIN NAME 22 100 33 10K 22 3D READY READY 33 33 5V_DET_HDMI_2 3D R466 22 R438 3D 22 E23 D22 F22 D23 F23 R441 F8 1K G8 K8 A4 Y17 R467 3D ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS ESSENTIAL THAT ONLY
  • LG 50PW450 | Service Manual - Page 20
    THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2011 LG Electronics Inc. All rights reserved. Only for training and service purposes DDR_A[12-0] DDR2_CLK DDR_BA[0] DDR_BA[1] 3D R700 100 /DDR2_CLK DDR2_CKE DDR2_ODT /DDR_CS /DDR_RAS /DDR_CAS /DDR_WE DDR_DQS0P DDR_DQS1P
  • LG 50PW450 | Service Manual - Page 21
    MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC. Copyright © 2011 LG Electronics Inc. All rights reserved. Only for training and service purposes SEPARATE GND R1 0 R2000 R2 0 R2001 CGND1 R3 0 R2002 R4 0 R2003 R5 0 CGND2 R2004 R6 0 R2005 R7
  • LG 50PW450 | Service Manual - Page 22
    (IC701) THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION. 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
  • LG 50PW450 | Service Manual - Page 23
  • LG 50PW450 | Service Manual - Page 24
    PDP TV Repair Guide < Applicable Model > - 50/60PZ550 ⓒ LG Electronics. Inc.2010
  • LG 50PW450 | Service Manual - Page 25
    Turn off (Instant, under watching) 7 8 C. Sound Problem No sound/ Sound distortion 8 9 E. General function Problem 10 Remote control & Local Key checking 9 RF emitter checking 10 First of all, Check whether there is SVC Bulletin in GCSC System for these model. ⓒ LG Electronics. Inc.2010
  • LG 50PW450 | Service Manual - Page 26
    TV Symptom A. Picture Problem N Replace Main B/D ☞A3 Check Vs, Va Y Normal N Move Power problem Section ☞A5~A6 ☞A12 Check voltage . -VY . VSC . VZB Check LED on . Crystal(X2), 3.3V, 5V . Rom update 2.Replace Control B/D Move Power problem Section ※Refer to the Module
  • LG 50PW450 | Service Manual - Page 27
    Repair Process PDP TV Symptom A. Picture Problem No Picture/No Sound Making Revision 2010. 11. 16 전자 - 6-2 2/10 & Speaker Cable open Close Close Normal N Sound? SVC Bulletin? Y Apply SVC Bulletin (S/W Upgrade etc) Normal Sound? Y Y N N Close Check 17V (Audio IC B+) on Power B/D
  • LG 50PW450 | Service Manual - Page 28
    PDP TV Symptom Check Picture problem Type ☞A14 Mal-discharge Dot type Scan Type A. Picture Problem Mal-discharge/Noise/dark picture ☞A15 Check CTRL ROM Ver. and Rom Upgrade Check Z-Sus Board 2. Replace Board Y Close 3 Normal N Picture? Y Close Replace Module ⓒ LG Electronics. Inc.2010
  • LG 50PW450 | Service Manual - Page 29
    PDP TV Symptom A. Picture Problem Picture broken/Freezing Making Revision 2010. 11. 16 전자 - 6-2 4/10 ☞A21 Check RF Signal level . By using Digital signal level meter . By using Diagnostics menu on OSD ( Menu→Press red key on R/C →Signal TEST) - Signal strength (Normal : over 50%) - Signal
  • LG 50PW450 | Service Manual - Page 30
    Repair Process PDP TV Symptom A. Picture Problem Vertical bar/ Horizontal Bar Making Revision 2010. 11. 16 전자 - 6-2 5/10 ☞A19 Check defect is rare CTRL B/D Normal N 1.Check CTRL B/D Picture? 2.Replace Board Y Close Normal N Replace Picture? Module Y Close ⓒ LG Electronics. Inc.2010
  • LG 50PW450 | Service Manual - Page 31
    Repair Process PDP TV Symptom B. Power Problem No Power (Not turn on) Making Revision 2010. 11. 16 전자 - 6-2 6/10 Check Power LED . Stand Check Main B/D Replace Main B/D ☞A22 Check the other pin's Output voltage on Power B/D Normal N Replace Power B/D Y Close 6 ⓒ LG Electronics. Inc.2010
  • LG 50PW450 | Service Manual - Page 32
    Repair Process PDP TV Symptom B. Power Problem Turn off (Instant, under watching) Making Revision 2010. 11. 16 전자 - 6-2 7/10 ※ To check Off 2HOUR Off NO Signal Off Don't appear Power Off History This is not problem Normal operation Move No Power problem Section 7 ⓒ LG Electronics. Inc.2010
  • LG 50PW450 | Service Manual - Page 33
    Top-Box, different maker TV etc N Normal Sound? Y SVC Y Bulletin? N Apply SVC Bulletin (S/W Upgrade etc) Normal Y Sound? Close N Explain customer that Cause is RF Signal's problem (Case 1) Cause is Equipment's problem (case 2) Check Audio IC Replace Main B/D 8 ⓒ LG Electronics. Inc.2010
  • LG 50PW450 | Service Manual - Page 34
    Repair Process PDP TV Symptom D. General Function Problem Making Remote control & B/D or Replace Main B/D (Power B/D don't have problem) N Repair/Replace IR B/D 2. Local KEY operating Repair Cable connection Connector solder Move Power problem Section Normal N operating? ☞A27 Check Key
  • LG 50PW450 | Service Manual - Page 35
    Repair Process PDP TV Symptom D. General Function Problem Making Remote control & Local Key & RF emitter checking Revision 3. RF emitter operating error 2010. Display normally N ☞A28 Replace RF emitter board Y Close Y Normal operating? N Replace Main B/D 10 ⓒ LG Electronics. Inc.2010
  • LG 50PW450 | Service Manual - Page 36
    PDP TV Repair Process Reference data Index No. Symptom Detail Page 1 Check Module A8 8 Z-Sus Board Checking Method(50R3) A9 11 Check 5V on Power B/D A12 12 Picture Problem Control Board Checking Method(50R3) A13 13 Mal discharge Symptom Picture A14 14 PDP Module Rom Ver.
  • LG 50PW450 | Service Manual - Page 37
    PDP TV Repair Process Reference data Index No. Symptom 18 19 Picture Problem 20 21 22 Power Problem 23 24 Sound Problem 25 26 General Function Problem 27 Detail Defect type cause by PDP Module Connector Type Page A19 A20 A21 A22 A23 A24 A25 A26 A27 A28 Remark ⓒ LG Electronics. Inc.2010
  • LG 50PW450 | Service Manual - Page 38
    Repair Process-Reference data PDP TV Symptom Item A. Picture Problem Check Module pattern by Tilt key Making Revision 2010. 11. 16 전자 - 6-2 A1 Tilt Key You can see 20 types patterns by using TILT Key on SVC Remote controller (except Old model) < CHECK Item > 1. Dead pixel 2.Image sticking 3.
  • LG 50PW450 | Service Manual - Page 39
    PDP TV Symptom A. Picture Problem Audio check method Making Revision 2010. 11. 16 전자 - 6-2 A2 Jack for Speaker connection 1.Check Audio output by using oscilloscope GND ↔ R- or R+ or L- or L+ 2.Check whether speaker jack was inserted properly or not. Audio output waveform A2 ⓒ LG
  • LG 50PW450 | Service Manual - Page 40
    Repair Process-Reference data PDP TV Input Block All Input Audio Problem Making Revision 2010. 11. 16 전자 - 6-2 A2-1 Make sure you can't hear any audio Y N Check speaker for (R380) / PDN (R374) :They must be High (3.3V) Replace R359, R360 Replace MSTAR(IC400). ⓒ LG Electronics. Inc.2010
  • LG 50PW450 | Service Manual - Page 41
    Repair Process-Reference data PDP TV Input Block Making Digital TV / HDMI Audio Problem Revision ◆ Digital TV N Check video output Y Follow procedure All source audio trouble shooting Follow procedure digital TV video trouble shooting 2010. 11. 16 전자 - 6-2 A2-2 ◆ HDMI N Check video output Y
  • LG 50PW450 | Service Manual - Page 42
    data PDP TV Input Block Analog TV Audio Problem N Check video output Y N Check #3 on TU300 for 5V Y N Check SIF signal C301 Y N Check SIF signal (C301) Y Follow procedure All source audio trouble shooting Y Replace MSTAR IC (IC400) Follow procedure analog TV video trouble shooting Check
  • LG 50PW450 | Service Manual - Page 43
    Repair Process-Reference data PDP TV Input Block Component / AV/RGB Audio Problem Making Revision 2010. 11. 16 전자 - 6-2 A2-4 Check Side AV) : C439, C440 Y Follow procedure All source audio trouble shooting Replace connector or cable if found damaged Replace the Resistor Replace the Capacitor
  • LG 50PW450 | Service Manual - Page 44
    TV Input Block Optical Audio Problem Making Revision 2010. 11. 16 전자 - 6-2 A2-5 Check Signal (JK204 #3) Y Check 5V #2 on JK204 N Check P601 Output (L604,L605) Y N Check SPDIF signal (R296) Replace MSTAR(IC400) < SPDIF waveform - sample > - Defend on the input signal. ⓒ LG
  • LG 50PW450 | Service Manual - Page 45
    Repair Process-Reference data PDP TV Symptom A. Picture Problem Check Va, Vs on Power Board Making Revision 2010. 11. 16 전자 - 6-2 A3 PDP Module Label Power Board Z-Sus Board ▶ Check Va & Adjust Va Voltage (Refer to the Module label for Va specification) ▶ Check Vs & Adjust Vs Voltage (Refer
  • LG 50PW450 | Service Manual - Page 46
    TV Symptom A. Picture Problem PDP Module Label Information Making Revision 2010. 11. 16 전자 - 6-2 A4 PDP Module Label Information. ① ② ⑧ ③ ④ ⑤ ⑥ ⑦ Vy Vsc Vzb ① Model of LG Electronics ⑦ Manufactured date(Year & Month) ⑧ Warning A4 ⑨ ⑨ UL Approval Mark ⑩ UL Approval No. ⑪ Model Name
  • LG 50PW450 | Service Manual - Page 47
    Repair Process-Reference data PDP TV Symptom A. Picture Problem Making Check & Adjust -VY,VSC,VZB voltage(50R3) Revision 2010. 11. 16 Voltage Check & Adjustment : 50R3 YSUS board Vsc adjustment 전자 - 6-2 A5 Fuses Vy Vsc Vzb 1. Vsc (150V) on Y-Sus B/D - Check Point: R324 -
  • LG 50PW450 | Service Manual - Page 48
    TV Symptom A. Picture Problem Making Check & Adjust -VY,VSC,VZB voltage(50R3) Revision Voltage Check & Adjustment : 50R3 ZSUS board 2010. 11. 16 전자 - 6-2 A5 Vzb adjustment Vy Vsc Vzb 3. VZB (115V) on Z-Sus B/D . Check Point: R156 - Adjustment Point: VR204 A5 ⓒ LG
  • LG 50PW450 | Service Manual - Page 49
    Repair Process-Reference data PDP TV Input Block Digital TV Video Problem Making Revision 2010. 11. 16 전자 - 6-2 A6-1 Check RF Cable Y Check TU300 Power 5V(C304), 3.3V( Monitor Out Video N (Scart out) Y N Check TU_SCL/SDA Line N Check Module Replace Tuner A6 ⓒ LG Electronics. Inc.2010
  • LG 50PW450 | Service Manual - Page 50
    Repair Process-Reference data PDP TV Input Block Analog TV Video Problem Making Revision 2010. 11. 16 전자 - 6-2 A6-2 Check RF Cable Y Check 5V voltage N on TU300(Pin3) Y Check CVBS signal N TU601 #11 Pin Y Replace MSTAR(IC400) Check
  • LG 50PW450 | Service Manual - Page 51
    Repair Process-Reference data PDP TV Input Block Component Video Problem Making Revision 2010. 11. 16 전자 - 6-2 A6-3 Check input signal format Is it supported? Y Check Component Cable Y Check signal on R411,C413,C415 Y Replace MSTAR(IC400) N Check the damage of JK210 And Replace Connector
  • LG 50PW450 | Service Manual - Page 52
    Repair Process-Reference data PDP TV Input Block RGB(D-Sub) Video Problem Making Revision 2010. 11. 16 전자 - 6-2 A6-4 Check input signal format Is it supported? Y Check RGB Cable conductors for damage Y N Check P205 Y Check signal, Hsync, Vsync R218, R219 Y Check signal N R404, R406, R408
  • LG 50PW450 | Service Manual - Page 53
    Repair Process-Reference data PDP TV Input Block AV Video Problem Making Revision 2010. 11. 16 전자 - 6-2 A6-5 Check input signal format Is it supported? Y Check AV Cable for damage or open N Replace Capacitor ※ Measured signals depend on the input signal. A6 ⓒ LG Electronics. Inc.2010
  • LG 50PW450 | Service Manual - Page 54
    Repair Process-Reference data PDP TV Input Block HDMI Video Problem Check input signal format Is it supported? Y Check HDMI Cable for damage or open conductors Y N Check EDID D/L Y Check JK200 / J201 / J202 N for proper connection or damage Y Replace MSTAR(IC400) Re-Download EDID
  • LG 50PW450 | Service Manual - Page 55
    Repair Process-Reference data PDP TV Symptom A. Picture Problem Fuse Checking Method Making Revision 2010. 11. 16 전자 - 6-2 A7 < DMM mode > Pic. 1. Fuse check Pic. 1. Pic. 2. 1) Sound voltage of 5V, Va, Vs, the board is failure, it need to replace the board. A7 ⓒ LG Electronics. Inc.2009
  • LG 50PW450 | Service Manual - Page 56
    Process-Reference data PDP TV Symptom A. Picture Problem Y-Sus Board Checking using digital multi-meter. ▣ Measurement method Diode FET YSUS board ▣ Specifications Position HS601 HS602 HS603 Direction Forward Reverse Forward Reverse Forward HS603 HS601 HS602 A89 ⓒ LG Electronics. Inc.2009
  • LG 50PW450 | Service Manual - Page 57
    Process-Reference data PDP TV Symptom A. Picture Problem Z-Sus Board Checking . 11. 16 전자 - 6-2 A9 ZSUS board HS102 HS101 ▣ Specifications Position HS101 HS102 Direction Forward Reverse Forward Reverse Circuit No. D114,D118 55V O.L. (Overload) FS202 5V fuse A9 ⓒ LG Electronics. Inc.2009
  • LG 50PW450 | Service Manual - Page 58
    Repair Process-Reference data PDP TV Symptom A. Picture Problem Check 5V, 17V on Power B/D Power Board Making Revision 2010. 11. 16 전자 - 6-2 A12 P813 P600 ▣ Measure 5V voltage P813 ▣ Measure 17V voltage 17.02 A12 ⓒ LG Electronics. Inc.2009
  • LG 50PW450 | Service Manual - Page 59
    Repair Process-Reference data PDP TV Symptom A. Picture Problem Control Board Checking Method(50R3) Making Revision ▣ Checking Method ④ Check IC ( IC53, IC51 ) ① Check Normal: 3.3V ) P105_FL1,FL2(5V) P2(18V) Pin14, 15 Pin 14,15 : 18V A13 ① Check Input voltage ⓒ LG Electronics. Inc.2009
  • LG 50PW450 | Service Manual - Page 60
    Repair Process-Reference data PDP TV Symptom A. Picture Problem Mal discharge Symptom ▣ Dot type Mal-discharge symptom Making Revision 2010. 11. 16 전자 - 6-2 A14 ▣ Dark picture caused by Mal-discharge ▣ Scan type Mal-discharge symptom A14 ⓒ LG Electronics. Inc.2010
  • LG 50PW450 | Service Manual - Page 61
    Repair Process-Reference data PDP TV Symptom A. Picture Problem PDP Module Rom Ver. Checking method ▣ Check by using Rom Label on control board " → Select Panel Control → Check Module Rom ver. ※Refer to the Module Rom upgrade manual for Rom upgrade. USB Type Jig A15 ⓒ LG Electronics. Inc.2010
  • LG 50PW450 | Service Manual - Page 62
    -Reference data PDP TV Symptom A. Picture Problem Y Drive B/D Checking method(50R1) ▣ Y drive board Making Revision 2010. 11. 16 전자 - 6-2 A16 Scan IC ※ DMM (Digital Multi-Meter) Input signal connector ※ Check all output pins of scan IC (connector) using DMM. A16 ⓒ LG Electronics. Inc
  • LG 50PW450 | Service Manual - Page 63
    Repair Process-Reference data PDP TV A. Picture Problem Symptom (Half picture) X- B/D Checking method(50R1) Making Revision ▣ Half / partly display (or abnormal display) connections (TCP - X board, CTRL board - X board) Va from CTRL Va from CTRL A18 Va from CTRL ⓒ LG Electronics. Inc.2010
  • LG 50PW450 | Service Manual - Page 64
    Repair Process-Reference data PDP TV Symptom A. Picture Problem Defect type cause by PDP Module Making Revision 2010. 11. 16 전자 - CTRL B/D 3. Replace CTRL B/D Horizontal Line or Bar 1. Check connection (Y-Sus B/D ↔Panel) 2. Check Y-Sus B/D 3. Replace Y-Sus B/D A19 ⓒ LG Electronics. Inc.2010
  • LG 50PW450 | Service Manual - Page 65
    Repair Process-Reference data PDP TV Symptom A. Picture Problem Connector Type on PDP Module COF Type TCP Type 96 Out Put 192 Out Put Making Revision 2010. 11. Bonding) on X B/D Connector to connect between Electrode PAD Of PANEL and Y Drive B/D,Z-Sus B/D A20 ⓒ LG Electronics. Inc.2010
  • LG 50PW450 | Service Manual - Page 66
    Repair Process-Reference data PDP TV Symptom A. Picture Problem RF Signal level Checking method Making Revision 2010. 11. 16 전자 - 6-2 A21 ◆ MENU Æ Press Red Button on R/C Æ Singal TEST -> Diagnostics 1. Check whether Signal Strength, Signal Quality is over 50% or not. 2. If Signal Strength,
  • LG 50PW450 | Service Manual - Page 67
    Repair Process-Reference data PDP TV Symptom B. Power Problem Check voltage on Power board Making Revision 2010. 11. 16 전자 - 6-2 A22 Pin Map Power B/D↔Main B/D P813 CChheecckkiinngg OOrrddeerr Checking No. Point 1 STBY 2 5V 3 17V 4 AC DET 5 RL_ON 6 M_ON Spec 5V 5V 17V High(3.3V~5V
  • LG 50PW450 | Service Manual - Page 68
    TV P811 Symptom B. Power Problem Power board Checking Method Making Revision 2010. 11. 16 전자 - 6-2 A23 Power B/D↔ Y-Sus B/D(P811) ◆ Check 5V,Va,Vs voltage Vs adjust Va adjust PIN NAME 1 VS 2 VS 3 NC 4 GND 5 GND 6 VA 7 M5V : For Voltage specification ⓒ LG Electronics. Inc.2010
  • LG 50PW450 | Service Manual - Page 69
    Repair Process-Reference data PDP TV Symptom B. Power Problem Check Power off History Making Revision ▣ Check Power off History by using SVC Remote controller Press "In-start" →Press" There is no operation for 2hours In case that there is no signal for 15minutes A24 ⓒ LG Electronics. Inc.2010
  • LG 50PW450 | Service Manual - Page 70
    Repair Process-Reference data PDP TV Symptom C. Sound Problem Speaker cable checking method Making Revision 2010. 11. 16 전자 - 6-2 A25 Jack for on Main B/D side & speaker side or not. 2. Check whether speaker cable have problem (disconnection wire) or not. A25 ⓒ LG Electronics. Inc.2010
  • LG 50PW450 | Service Manual - Page 71
    Repair Process-Reference data PDP TV Symptom D. General function defect Check Remote control IR operation Making Revision whether appear voltage on multi meter when operate remote control. ※ Test Condition for case 3 → Check Point: Pin 1( IR) → TV: power on status → Multi meter: Select DC 10V
  • LG 50PW450 | Service Manual - Page 72
    Repair Process-Reference data PDP TV Symptom D. General function defect Check Local Key operation Making 2010. 11. whether appear voltage on multi meter when operate Local switch. ※ Test Condition for case 3 → Check Point: Pin 2,3( Key1,Key2) → TV: power on status → Multi meter: Select DC 10V
  • LG 50PW450 | Service Manual - Page 73
    Repair Process-Reference data PDP TV Symptom D. General function defect Check RF emitter operation Making 2010. 11. 16 whether appear voltage on multi meter when operate RF emitter board. ※ Test Condition for case 3 → Check Point: Pin 12 → TV: power on status → Multi meter: Select DC 10V A28
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PLASMA TV
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS : PD11A
MODEL : 42PW450/450A/450N/450T
MODEL :
42PW451/451A
42PW450/450A/450N/450T-ZA/
42PW451/451A-ZD
North/Latin America
Europe/Africa
Asia/Oceania
Internal Use Only
Printed in Korea
P/NO : MFL66306703(1101-REV00)