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LG RU-50PZ61 Service Manual

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PLASMA TV
SERVICE MANUAL
CHASSIS : RF-043A
MODEL : RU-50PZ61
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CANADA : http//biz.lgservice.com
USA
: http//www.lgservice.com
: http//lgservice.com/techsup.html

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  Summary of Contents for LG RU-50PZ61

  • Page 1 CANADA : http//biz.lgservice.com : http//www.lgservice.com : http//lgservice.com/techsup.html PLASMA TV SERVICE MANUAL CHASSIS : RF-043A MODEL : RU-50PZ61 CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
  • Page 2: Safety Precautions

    If the exposed metallic part has a return path to the chassis, the measured resistance should be between 1MΩ and 5.2MΩ. CANADA: LG Electronics Canada, Inc. 550 Matheson When the exposed metal has no return path to the chassis the Boulevard East Mississauga, Ontario L4Z 4G3 reading must be infinite.
  • Page 3: Table Of Contents

    TABLE OF CONTENTS DESCRIPTION OF CONTROLS ...........4 SPECIFICATIONS..............7 ADJUSTMENT INSTRUCTIONS ..........8 TROUBLE SHOOTING GUIDE ...........12 BLOCK DIAGRAM...............23 EXPLODED VIEW...............26 EXPLODED VIEW PARTS LIST .........27 REPLACEMENT PARTS LIST ..........28 SCHEMATIC DIAGRAM............PRINTED CIRCUIT BOARD ........... - 3 -...
  • Page 4: Description Of Controls

    - This is a simplified representation of front panel. Here shown may be somewhat different from your TV. Front Panel Controls Front Panel Controls ON/OFF S-VIDEO VIDEO AUDIO L/MONO TruSurround XT ruSurround XT RU-50PZ61 RU-60PZ61 8 9 10 S-VIDEO VIDEO L/MONO AUDIO ON/OFF TruSurround XT ruSurround XT RU-42PZ61...
  • Page 5 DESCRIPTION OF CONTROLS Connection Options Connection Options Monitor Output Connect a second TV or Remote Control Port RS-232C INPUT Monitor. Connect your wired DVD/DTV Input (Component 1-2) (CONTROL/SER- remote control here. Connect a component video/audio S-Video Input VICE) PORT device to these jacks. Connect S-Video out from an S- Connect to the RS- VIDEO device to the S-VIDEO...
  • Page 6: Remote Control Key Functions

    DESCRIPTION OF CONTROLS Remote Control Key Functions Remote Control Key Functions - When using the remote control, aim it at the remote control sensor on the TV. LIGHT MODE Illuminates the remote control buttons. Selects the remote operating mode: TV, VCR, DVD, CABLE, HDSTB or AUDIO.
  • Page 7: Specifications

    SPECIFICATIONS RU-42PZ71 RU-42PZ61 MODEL RU-50PZ61 RU-60PZ61 49.6 / 1260 Width (inches / mm) 56.5 / 1436 57.7 / 1465 49.6 / 1260 28.6 / 726.2 Height (inches / mm) 36 / 913.2 33.3 /845.6 28.5 / 724.8 11.3 / 287 Depth (inches / mm) 3.9 / 98.6...
  • Page 8: Adjustment Instructions

    ADJUSTMENT INSTRUCTIONS 1. Application Object (2) Right click on 'LGIDS' and select ‘Create Shortcut’ Then move the shortcut icon onto the desktop. These instructions apply to the RF-043A Chassis. (3) Double-click on the ‘LGIDS’ icon on the desktop to execute the program. 2.
  • Page 9 ADJUSTMENT INSTRUCTIONS 4-2. KEY Generation (Fig. 3) 4. HDCP Download (Fig. 5) 4-1. LGIDS Setting Method (1) Click on ‘setup’ to install in your directory. (1) Click on ‘Key Generation (G)’. (2) After installation has completed, check if the file shown on (2) Input the number of the key in Generation count.
  • Page 10 ADJUSTMENT INSTRUCTIONS (6) It is possible to check how many Generations are created at this point. (Fig. 7) shows that you have created 130 Generations and you will start from 131 next time. (Fig. 7) (Fig. 10) Abnormal State 4-3. HDCP Download Method (4) If abnormal state (Fig.
  • Page 11 ADJUSTMENT INSTRUCTIONS 5-4. Adjustment Method for 6. DDC Data Input P/No. 3501V00182A B/D 6-1. Required Test Equipment (1) A jig for adjusting PC, DDC (PC serial to D-sub (1) Va Adjustment Connection equipment) 1) After receiving 100% Full White Pattern, HEAT RUN. (2) S/W for writing DDC (EDID Data Write &...
  • Page 12 ADJUSTMENT INSTRUCTIONS 7. Adjustment of White Balance 8-2. Method of Auto RGB Color Balance (1) Input RGB Source : Component 480p/576p 16 Gray Scale 7-1. Required Equipment Pattern At this time, only connect the Y signal, not Pb and Pr. Color Analyzer (CA-100 or similar product) (2) Press ADJ KEY on the S R/C.
  • Page 13: Trouble Shooting Guide

    TROUBLE SHOOTING GUIDE 1. Power Board 1-1. General Power Flow Start check Doesn't the It is identical Is the Interface screen whole come with Power Off signal operated? out? condition? 1. Check the Power Off 2. Check the Interface condition. signal condition.
  • Page 14 TROUBLE SHOOTING GUIDE 1-2. 3510V00182A Power Board Structure T502: Vs Trans T702: Va Trans T101: St-by Trans T103: Low Voltage Trans - 14 -...
  • Page 15 TROUBLE SHOOTING GUIDE 1-3. 3501V00180A Power Board Structure T221: Vs Trans T271: Va Trans T121: St-by Trans T201: Low Voltage Trans - 15 -...
  • Page 16: No Power

    TROUBLE SHOOTING GUIDE 2. No Power (1) Symptom Does’t minute discharge at module. ¯ No front LED. ¯ (2) Check follow Power cord connected? Plug in power cord. Cable connecting the Line Filter Connect Cable. and Power Switch connected? Is the Power Switch connected to Connect Cable.
  • Page 17 TROUBLE SHOOTING GUIDE 3. Protect Mode (1) Symptom After once shining, it does not discharge minutely ¯ from module The Relay "clicks" ¯ Front LED changes from Green to Red ¯ (2) Check follow Is the Power Board Is output the normality Low/High Replace Power good? voltage except Stand-by 5V?
  • Page 18 TROUBLE SHOOTING GUIDE 4. No Raster (1) Symptom Does’t minute discharge at module. ¯ Front LED is green but, no Raster. ¯ (2) Check follow Is the Power Board Is output the normality Low/High Replace Power good? voltage except Stand-by 5V? Board.
  • Page 19: Abnormal Display

    TROUBLE SHOOTING GUIDE 5. Abnormal Display 5-1. Does’t display the OSD (1) Symptom LED is green ¯ The minute discharge continuously becomes ¯ accomplished from module (2) Check follow Check the LVDS Is the LVDS cable Replace cable. cable? connected well? Reset cable.
  • Page 20 TROUBLE SHOOTING GUIDE 5-2. In case of does’t display the screen into specific mode (1) Symptom The screen does not become the display from specific input mode ¯ (RF, AV, Component, RGB, DVI). (2) Check follow Check the all input mode should become normality display. ¯...
  • Page 21 TROUBLE SHOOTING GUIDE (5) Abnormal display in Component 480i mode Is the Video Decoder Are the Input voltage, IIC Replace IC Comm. and HV sync good? VPC3230 good? Is the DeInterlacer Are the Input voltage, IIC Replace IC S2300 good? Comm.
  • Page 22 TROUBLE SHOOTING GUIDE (7) Abnormal display in RGB DTV mode Are the Input voltage, IIC Is normal the Replace IC Comm. and HV sync good? CXA2101? Is normal the Are the Input voltage, IIC Replace IC Comm. and HV sync good? M52758? Are the Input voltage, IIC Is normal the Scaler?
  • Page 23: No Sound

    TROUBLE SHOOTING GUIDE 6. No sound (1) Symptom LED is green ¯ Screen display but no audio ¯ (2) Check follow Check Speaker Is the SPK cable Replace SPK cable cable? connected well? Reset cable. Audio normal on Is the Flat cable IC800 good? IC801 good? RGB/DVI?
  • Page 24: Block Diagram

    BLOCK DIAGRAM - 24 -...
  • Page 25 BLOCK DIAGRAM - 25 -...
  • Page 26: Exploded View

    EXPLODED VIEW - 26 -...
  • Page 27: Exploded View Parts List

    6871QRH042C PCBASSEMBLY,DISPLAY XRRB ASSY 50X2A COF RESISTOR 6871QXH024C PCBASSEMBLY,DISPLAY XRCT ASSY 50X2A COF RESISTOR 3091V00B67A CABINET ASSEMBLY,DN-50PZ60 STEREO NF01DC SET 4980V00634C SUPPORTER,FILTER AL RU-50PZ61 FOR C/C 4980V00636E SUPPORTER,FILTER AL RU-50PZ61 4980V00637C SUPPORTER,FILTER AL RU-50PZ61 FOR CC 3300V00250C PLATE,FRONT DU-50PZ60(ONLY U.S.A)
  • Page 28: Replacement Parts List

    SN74HCT08D 16P Q1100 0TR387500AA CHIP 2SC3875S(ALY) KEC IC403 0ISTLSG009A M74HC123RM13TR 16P 0TR150400BA CHIP 2SA1504S(ASY) KEC Q1101 IC500 0ICTMLG018A LGDP4410 LG IC 176P Q1102 0TR387500AA CHIP 2SC3875S(ALY) KEC 0IZZVC0128B M37136EFSP DIP 52P IC500 Q1103 0TR150400BA CHIP 2SA1504S(ASY) KEC 0IKE780500Q KIA7805API 3P TO-220...
  • Page 29 REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION Q1114 0TR387500AA CHIP 2SC3875S(ALY) KEC Q402 0TR387500AA CHIP 2SC3875S(ALY) KEC CHIP 2SA1504S(ASY) KEC CHIP 2SC3875S(ALY) KEC Q1115 0TR150400BA Q403 0TR387500AA 0TR387500AA CHIP 2SC3875S(ALY) KEC 0TR387500AA CHIP 2SC3875S(ALY) KEC Q1116 Q403 Q1117...
  • Page 30 REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION D1304 0DD226239AA CHIP KDS226 SOT-23 C1042 0CE477SF6DC 470UF MVG 16V 20% CHIP KDS226 SOT-23 100UF MVG 16V M D1305 0DD226239AA C1045 0CE107SF6DC 0DD226239AA CHIP KDS226 SOT-23 0CE476DF618 47UF STD 16V M D1306 C105...
  • Page 31 REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION C1251 0CE477SF6DC 470UF MVG 16V 20% C303 0CE476SF6DC 47UF MVG 16V M 220UF MV 16V 20% 47UF MVG 16V M C1254 0CE227VF6DC C315 0CE476SF6DC 0CE227VF6DC 220UF MV 16V 20% 0CE476SF6DC 47UF MVG 16V M C1256...
  • Page 32 REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION C723 0CE226SF6DC 22UF MVG 16V 20% L1203 6140VB0004B COIL,CHOKE 26UH 10UF MVG 16V 20% COIL,CHOKE 26UH C727 0CE106SF6DC L1209 6140VB0004B 0CE226SF6DC 22UF MVG 16V 20% 6140VB0004B COIL,CHOKE 26UH C737 L1213 C744...
  • Page 33 REPLACEMENT PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION AR717 0RRZVTA001D 22 OHM 1 / 16 W 1608 5% L1102 6210VC0006A FILTER,EMC FBMH3216 HM501NT 22 OHM 1 / 16 W 1608 5% FILTER,EMC FBMH3216 HM501NT AR718 0RRZVTA001D L1201 6210VC0006A...
  • Page 34 L217 6200JB8010L FILTER,EMC MLB-201209-1000L-N2 ACCESSORIES FILTER,EMC FBMH3216 HM501NT L300 6210VC0006A L301 6210VC0006A FILTER,EMC FBMH3216 HM501NT 3828VA0470P MANUAL,OWNERS LG EN(CIRCUIT) L302 6210VC0006A FILTER,EMC FBMH3216 HM501NT 6710V00137G REMOTE CONTROLLER L303 6210VC0006A FILTER,EMC FBMH3216 HM501NT 6410VUH005A POWER CORD,PS204 125V/13A 2800MM FILTER,EMC FBMH3216 HM501NT...
  • Page 35 Aug., 2004 P/NO : 3828VD0179P Printed in Korea CANADA: LG Electronics Canada, Inc. 550 Matheson Boulevard East Mississauga, Ontario L4Z 4G3 : LG Electronics Alabama, Inc. P.O.Box 240007, 201 James Record Road Bldg 3 Huntsville, AL 35824...
  • Page 40 MAIN (TOP)
  • Page 41 PRINTED CIRCUIT BOARD MAIN (TOP) MAIN (BOTTOM ) TUNER(TOP) POWER S/W TUNER(BOTTOM) SIDE A/V(TOP) AUDIO SPK_TERMINAL(TOP) SIDE A/V(BOTTOM) AUDIO SPK_TERMINAL(BOTTOM) CONTROL(TOP) FAN CONTROL(TOP) CONTROL(BOTTOM) FAN CONTROL(BOTTOM)