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LG 50PJ350R Service Manual
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LG 50PJ350R Service Manual

LG 50PJ350R Service Manual

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PLASMA TV
SERVICE MANUAL
CHASSIS : PP01A
MODEL : 50PJ350R
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL62881401(0912-REV00)
North/Latin America
Europe/Africa
Asia/Oceania
50PJ350R-TA
Internal Use Only
http://aic.lgservice.com
http://eic.lgservice.com
http://biz.lgservice.com
Printed in Korea

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Summary of Contents for LG 50PJ350R

  • 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 : PP01A MODEL : 50PJ350R 50PJ350R-TA CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. Printed in Korea P/NO : MFL62881401(0912-REV00)

  • Page 2: Table Of Contents

    CONTENTS ..........................2 SAFETY PRECAUTIONS ......................3 SPECIFICATION.........................4 ADJUSTMENT INSTRUCTION ....................7 BLOCK DIAGRAM ........................13 EXPLODED VIEW ........................14 SVC. SHEET ..........................Copyright ©2009 LG Electronics. Inc. All right reserved. - 2 - 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. Copyright ©2009 LG Electronics. Inc. All right reserved. - 3 - LGE Internal Use Only Only for training and service purposes...

  • Page 4: Specification

    3) Temp. : -10 ~ 60deg 4) Humidity : 10 ~ 90% Input Voltage AC100-240V, 50/60Hz Maker : LGIT Copyright ©2009 LG Electronics. Inc. All right reserved. - 4 - LGE Internal Use Only Only for training and service purposes...
  • Page 5 Rear 1EA, Side 1EA) RS-232C (1EA) Remote control USB Input (1EA) SD DivX, MP3, JPEG, PJ250R Rear USB only for service Copyright ©2009 LG Electronics. Inc. All right reserved. - 5 - LGE Internal Use Only Only for training and service purposes...
  • Page 6 - Warm, Cool : Color Temp. UI 30 Temperature 0.278 0.293 0.308 - Medium : Color Temp. UI 0 Warm 0.298 0.313 0.328 0.314 0.329 0.344 Copyright ©2009 LG Electronics. Inc. All right reserved. - 6 - LGE Internal Use Only Only for training and service purposes...

  • Page 7: Adjustment Instruction

    (2) Use voltage : 3.3V (5 pin) (3) SCL : 15 pin (4) SDA : 12 pin (5) Tact time : about 2min and 30seconds Copyright ©2009 LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
  • Page 8 ( Fig. 2) (6) Select SW file (XXXX.bin) you want, push the “OK” Key. (7) S/W download process is excuted automatically. Copyright ©2009 LG Electronics. Inc. All right reserved. - 8 - LGE Internal Use Only Only for training and service purposes...
  • Page 9 Caution - Don’t Push “IN-STOP” key after PCB assembly adjustment. * PP01A/B/C Tool option Model Tool option 50PJ250R-TA 42PJ250R-ZA Copyright ©2009 LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...
  • Page 10 (5) Both component and RGB ADC adjustment are executed automatically When ADC adjustment is finished, this OSD appear. <HDMI 3 : 256bytes> SIDE HDMI(HDMI 3) Copyright ©2009 LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only Only for training and service purposes...
  • Page 11 - Although it is SKD model, adjust area option in SET assemmbly process. - Don’t Push “IN-STOP” key after PCB assembly adjustment. Copyright ©2009 LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...
  • Page 12 * Gain Max Value is 192. So, Never make any Gain Value over 192 and please fix one Value on 192, between R, G and B. R-GAIN G-GAIN B-GAIN Copyright ©2009 LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only Only for training and service purposes...

  • Page 13: Block Diagram

    BLOCK DIAGRAM Copyright ©2009 LG Electronics. Inc. All right reserved. - 13 - LGE Internal Use Only Only for training and service purposes...

  • Page 14: Exploded View

    EXPLODED VIEW IMPORTANT SAFETY NOTICE 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.
  • Page 15 EAX61365502(BPR) R142 H6 Revolution Circuit Diagram NONE_RGB ROM_SDA R143 NONE_RGB ROM_SCL R144 JK114 +5V_ST NONE_RGB DSUB_SDA R150 PSC008-02 NONE_RGB DSUB_SCL R543 [ Slim Jack : 6630TGA004Q ] [ Slim Jack : 6630G00001E ] [ Slim Jack : EAG59023302 ] EYE_SCL R544 +3.3V_MPLL JK110...
  • Page 16 EAX61365502(BPR) LVDS Block H6 Revolution Circuit Diagram KEY/IR Interface Power Block P202 SMAW200-H26S1 SEPARATE GND P203 ROM_TX ROM_RX 12507WS-12L P200 SMAW200-H18S1 CGND1 +5V_ST P_SCL P_SDA +5V_MULTI TXCE0- TXCE0+ HOTEL +17V_TI +3.3V_MPLL TXCE1- TXCE1+ R224 HOTEL 4.7K R226 Q202 TXCE2- TXCE2+ HOTEL 2SC3052 4.7K...
  • Page 17 EAX61365502(BPR) H6 Revolution Circuit Diagram Audio Amp Tuner(7mm) AVSS This parts are Located TU300 on AVSS area. +3.3V_MST R302 TAFJ-Z001D +5V_TU C332 L310 +3.3V_AVDD AVSS 0.033uF 120-ohm C316 4700pF +17V_TI AVSS NC_1 C333 C341 C307 C326 C313 R313 0.1uF 0.1uF 100uF 100uF L309...
  • Page 18 EAX61365502(BPR) +3.3V_MST +3.3V_MST H6 Revolution Circuit Diagram DDR2_A[0-12] 20pF C454 SUB MICOM V_REF 12MHz R444 X400 +1.2V_MST +3.3V_MPLL Main Flash Memory 20pF C455 I2S_OUT Close to IC as close as possible C460 C462 C464 C466 C468 C470 C472 0.01uF 0.01uF 0.01uF 0.01uF 0.01uF...
  • Page 20 . Rom update .Check B+(5V) 2.Replace Control B/D Move Move 1. Check Y-Sus/ Z-Sus Board Power problem Power problem Section 2. Replace defective B/D Section ※Refer to the Module label for each voltage <SVC R/C & Pattern> ⓒ LG Electronics. Inc.2009...
  • Page 21 IR B/D Check Input signal . RF Cable connection Power . SCART Cable connection LED ON? appear? . HDMI Cable connection . Component Cable … Latest S/W update Replace from GCSC Main B/D (Firmware Management) Normal Close ⓒ LG Electronics. Inc.2009...
  • Page 22 Power B/D before replace Y Drive B/D Check RF Cable Normal Check Tuner Picture Noise Connection Picture? & Replace Close Check Replace Normal 1. Check Z-Sus Board Normal Picture mode Dark Picture Module Picture? 2. Replace Board Picture? setting Close Close ⓒ LG Electronics. Inc.2009...
  • Page 23 Check RF Cable Normal Check Normal Connection Close Picture? S/W Version Bulletin? Picture? 1. Reconnection S/W Upgrade Check Normal Contact with signal distributor Tuner soldering Picture? or broadcaster (Cable or Air) Normal Picture? Replace Main B/D Close Close ⓒ LG Electronics. Inc.2009...
  • Page 24 1. Check Y Drive B/D Normal 1.Check CTRL B/D Normal of Connector (FPC) Normal Module Line/Bar 2. Replace Board Picture? 2.Replace Board Picture? on Y Drive B/D Close Close 1.Connector re-connection 2.Eliminate foreign material on FFC ⓒ LG Electronics. Inc.2009...
  • Page 25 Replace AC DET Signal RL_ON Signal Normal Voltage? Signal? Signal? Output voltage Power B/D on Power B/D on Power B/D on Power B/D Close Check Power B/D Check Main B/D Replace Power B/D Replace Main B/D ⓒ LG Electronics. Inc.2009...
  • Page 26 KEY Off Check This is not problem “Off Timer” Under watching Power Off History Set? Normal operation 2HOUR Off NO Signal Off “Off timer” Function off Move Don’t appear No Power problem Power Off History Section ⓒ LG Electronics. Inc.2009...
  • Page 27 (By connecting same output cable of other equipment) (S/W Upgrade etc) → DVD Player ,Set-Top-Box, different maker TV etc Check Audio IC Explain customer that Replace Main B/D Cause is RF Signal’s problem (Case 1) Cause is Equipment’s problem (case 2) ⓒ LG Electronics. Inc.2009...
  • Page 28 When turn off light Baterry of R/C Replace Power B/D or in room Replace Main B/D (Power B/D don’t have problem) If R/C operate, Normal Close Explain the customer operating? cause is interference from light in room. Replace R/C ⓒ LG Electronics. Inc.2009...
  • Page 29 < CHECK Item > 1. Dead pixel 2.Image sticking 3.Mal discharge 4.Module defect (V-Line/Bar, H-Line/Bar,,,) 5. In case of no picture, you can judge defect cause (Module or Main B/D) - If patterns appear, defect cause is Main B/D ⓒ LG Electronics. Inc.2009...
  • Page 30 ⑤ Check MCM at VS_DA by using Multi meter ③ Check Crystal(X101) Check oscillation of Crystal (Normal: 100 MHZ, 1.6v) ⑤ Check MCM MCM Check point (+)VS_DA / (-) GND (Normal: 3.3V ) ② Check LED On ① Check Input voltage ⓒ LG Electronics. Inc.2009...
  • Page 31 Rom ver. Label ▣ Check by using SVC Remocon Press “In-start” →Press” 0000” ※Refer to the Module Rom upgrade manual → Select Panel option → Pop up Module Rom ver. for Rom upgrade. USB Type Jig ⓒ LG Electronics. Inc.2009...
  • Page 32 1. Check connection (CTRL B/D, X B/D) Many irregular vertical lines 2. Check CTRL B/D 3. Replace CTRL B/D 1. Check connection (Y-Sus B/D ↔Panel) Horizontal Line or Bar 2. Check Y-Sus B/D 3. Replace Y-Sus B/D ⓒ LG Electronics. Inc.2009...
  • Page 33 TCP (Tape Carrier Package) is film Connector to connect between 2. Check bad soldering for IC connect with Electrode pattern Electrode PAD Of PANEL and on Chip resistance (Direct Bonding) on X B/D Y Drive B/D,Z-Sus B/D ▣ Defect symptom ⓒ LG Electronics. Inc.2009...
  • Page 34 Power B/D↔Main B/D (P813) (P1100) Checking Spec Remark Point P814 STBY 5V AC DET High(3.3V~5V) Error_DET Error_DET RL_ON High(3.3V~5V) M5_ON High(3.3V~5V) Vs-ON High(3.3V~5V) STBY STBY Check the other pin’s output RL_ON AC_DET M_ON AUTO_GND Wafer SMAW200-H18S2 ⓒ LG Electronics. Inc.2009...

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50pj350r-ta