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COLOR MONITOR
SERVICE MANUAL
CHASSIS NO. : CL-18
FACTORY MODEL: LM568E
MODEL:
*(
) ID LABEL MODEL No.
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
MUTE
MENU
AUTO
VOL
SET
Website:http://biz.LGservice.com
E-mail:http://www.LGEservice.com/techsup.html
LCD 568LM
*To apply the Toshiba Module +GmZan2 Chip.
(LM568E-GT)
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Table of Contents
Related Manuals for LG Flatron LM568E
Summary of Contents for LG Flatron LM568E
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Page 1: Color Monitor
Website:http://biz.LGservice.com E-mail:http://www.LGEservice.com/techsup.html COLOR MONITOR SERVICE MANUAL CHASSIS NO. : CL-18 FACTORY MODEL: LM568E MODEL: LCD 568LM (LM568E-GT) ) ID LABEL MODEL No. CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. MUTE MENU AUTO *To apply the Toshiba Module +GmZan2 Chip. -
Page 2: Table Of Contents
CONTENTS SPECIFICATIONS ........... 2 ADJUSTMENT ............9 PRECAUTIONS ............3 TROUBLESHOOTING GUIDE ......10 TIMING CHART ............4 PRINTED CIRCUIT BOARD........15 OPERATING INSTRUCTIONS ........ 5 EXPLODED VIEW...........18 WIRING DIAGRAM ..........6 REPLACEMENT PARTS LIST .......20 BLOCK DIAGRAM ........... 7 PIN CONFIGURATION..........24 DESCRIPTION OF BLOCK DIAGRAM.....8 SCHEMATIC DIAGRAM ......... -
Page 3: Precautions
If the wires are pressed cause short and may • Do not modify original design without obtaining written burn or take fire. permission from LG or you will void the original parts and labor guarantee. TAKE CARE DURING HANDLING THE LCD MODULE WITH BACKLIGHT UNIT. -
Page 4: Timing Chart
TIMING CHART VIDEO SYNC Total Video Blanking Sync Back Front Sync Frequency MODE H / V Resolution Period Active Time Duration Porch Porch Polarity Clock ( E ) Time ( A ) ( B ) ( D ) ( F ) ( C ) 25.175 31.468 KHz... -
Page 5: Operating Instructions
OPERATING INSTRUCTIONS FRONT VIEW REAR VIEW HEAD PHONE MIC. IN MIC. OUT MIC . MIC . OU T AUDIO IN AU DIO AUTO MUTE MENU D-Sub Signal Connector Front Control Panel DC Power Connector Power (DPMS) Indicator Power ON/OFF Button Front Control Panel AUTO MUTE... -
Page 6: Wiring Diagram
WIRING DIAGRAM J5 J3 Connector Ass’y P/N: 6631T11012N - 6 -... -
Page 7: Block Diagram
BLOCK DIAGRAM - 7 -... -
Page 8: Description Of Block Diagram
DESCRIPTION OF BLOCK DIAGRAM 1. Scaler One chip IC(GMZAN2, U201) GMZAN2 (U201) is one chip IC which it supports four internal function blocks of Video Amp, PLL, A/D converter and Video processor. Video signal (0.7Vp.p) clamped through C209, 208, 207 with matching IC’s proper cut off voltage. This signal is processed as a proper 8 bit digital signal by U201’s amplifying, phase locking, A/D converting, and scaling operations. -
Page 9: Adjustment
ADJUSTMENT All adjustment are thoroughly checked and corrected 2. Adjustment for White Balance when the monitor leaves the factory, but sometimes 1) Display color 0,0 pattern at Mode 12. several minor adjustment may be required. 2) Set External Bright to MAX position and Contrast to Adjustment should be following procedure and after MAX Position. -
Page 10: Troubleshooting Guide
TROUBLESHOOTING GUIDE 1. NO POWER NO POWER (POWER INDICATOR OFF) CHECK ADAPTER, AND FIND OUT CHECK J04’S A SHORT POINT VOLTAGE AS OPENING (12V) ? EACH POWER LINE CHECK CHECK U501, U803 PIN 1 U803 LINE VOLTAGE (12V) ? CHECK U803 PIN 3 CHECK U803 Voltage... - Page 11 2. NO RASTER (OSD IS NOT DISPLAYED) – INVERTER NO RASTER (OSD IS NOT DISPLAYED) J705 PIN10 CHECK ADAPTER 12V? CHECK MICOM INV J705 PIN5 ON/OFF PORT. 1.CHECK MICOM DIM-ADJ J705 PIN1 PORT CHECK PULSE AS CONTACTING SCOPE PROBE TO CAUTION LABEL. REPLACE (CONTACT PROBE TO INVERTER ASS’Y...
- Page 12 3. NO RASTER (OSD IS NOT DISPLAYED) – gmZAN1 NO RASTER (OSD IS NOT DISPLAYED) U201 POWER PINS CHECK U2, U24 3.3V? 1. CHECK PIN141, 142 U201 PIN141, 142 SOLDERING CONDITION OSCILLATE AS 20M? 2. CHECK X201 3. TROUBLE IN U201 U401 CHECK U401’S SOLDERING PIN31 IS 65MHz CLOCK?
- Page 13 4. NO RASTER (OSD IS DISPLAYED) – gmZAN1 NO RASTER (OSD IS DISPLAYED) U201 POWER PIN CHECK U802 3.3V? 1. CHECK PC CHECK 2. CHECK SIGNAL CABLE R,G,B INPUT? U201 PIN 87, 91, 95 & D-SUB CONNECTOR LINE CHECK H/V SYNC LINE (U201, U501, D-SUB) - 13 -...
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Page 14: No Sound
5. NO SOUND NO SOUND CHECK SPEAKER CHECK SPEAKER ASS’Y? AUDIO PCB CHECK JACK(J7) CHECK INPUT SIGNAL & AUDIO CORD U3(TDA7449) PIN7,8? CHECK MAIN CHECK U501(MICOM) IIC LINE →AUDIO J3 →U3(TDA7449) CHECK INPUT SIGNAL CHECK U3(TDA7449) U1(TDA7496L) PIN4,9? CHECK OUTPUT SIGNAL CHECK U1(TDA7496L) U1(TDA7496L) PIN14,17? -
Page 15: Printed Circuit Board
PRINTED CIRCUIT BOARD 1. MAIN BOARD (Component Side) L710 C835 R805 C820 C813 L701 C404 C405 U805 R404 R403 R406 R707 R706 R405 C230 R702 C262 R701 C261 BA205 R703 C257 C801 BA203 BA204 C819 C256 C258 C818 C255 C269 C254 BA206 R705... - Page 16 2. MAIN BOARD (Solder Side) C504 C501 C516 C507 C508 C718 C509 C209 R205 C203 R204 C208 C202 R203 C207 C201 C244 C241 C246 C234 C802 C266 C247 C265 C249 C227 C233 C263 C248 C228 C229 C251 C401 C250 C252 C816 C706 - 16 -...
- Page 17 3. AUDIO BOARD 4. CONTROL BOARD(Component Side) 5. CONTROL BOARD(Solder Side) - 17 -...
- Page 18 - 18 -...
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Page 19: Exploded View Parts List
SPEAKER ASSEMBLY, LM568E T401SX154K14 SPEAKER ASSY 1W 4OHM 6401TZZ025A METAL,FIX SPEAKER (LM568E) 4950TKK337A ADAPTER, AC-DC, ADP-36UB DELTA 12V 3.0A FOR LG 6634TBZ016A ADAPTER, AC-DC, LSE0107A1236 LISHIN 12V 3.0A FOR LG or 6634B00046A ADAPTER, AC-DC, PSCV360104A SAMSUNG 12V 3.0A FOR LG or 6634TBZ014A SIGNAL CABLE, UL 2990-9C(7.5) DT 1870MM GRAY(85964) LB500 DM... -
Page 20: Replacement Parts List
REPLACEMENT PARTS LIST CAUTION: BEFORE REPLACING ANY OF THESE COMPONENTS, READ CAREFULLY THE SAFETY PRECAUTIONS IN THIS MANUAL. * NOTE SAFETY Mark AL ALTERNATIVE PARTS DATE: 2002. 04. 25. DATE: 2002. 04. 25. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. - Page 21 DATE: 2002. 04. 25. DATE: 2002. 04. 25. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION C828 DCH3104K946 DCH3104K946 BA205 6210TCE002B HB-4M3216-121JT CERATECH 3 C829 0CC102CK41A 1000PF 1608 50V 5% R/TP NP BA206 6210TCE002B HB-4M3216-121JT CERATECH 3...
- Page 22 DATE: 2002. 04. 25. DATE: 2002. 04. 25. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R536 0RJ1004D677 1000000 OHM 1/10 W 5% 1608 R305 0RN3001F409 3K 1/6W 1% TA52 R537 0RJ4701D677 4.7K OHM 1/10 W 5% 1608 R/...
- Page 23 DATE: 2002. 04. 25. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION 6210TCE001G HH-1M3216-501 CERATEC 3216 6210TCE001H HB-1T2012-301JT CERATEC 20 6210TCE001H HB-1T2012-301JT CERATEC 20 6210TCE001H HB-1T2012-301JT CERATEC 20 6210TCE001H HB-1T2012-301JT CERATEC 20 6210TCE001H HB-1T2012-301JT CERATEC 20 6210TCE001G HH-1M3216-501 CERATEC 3216 6210TCE001G HH-1M3216-501 CERATEC 3216 0TR387500AA...
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Page 24: Pin Configuration
PIN CONFIGURATION TDA7496L SGS-THOMOSN 2W+2W AMPLIFIER WITH DC VOLUME CONTROL Pin Configuration PIN CONNECTION OUTL VAROUT_L VOLUME VAROUT_R OUTR N.C. MUTE STBY Powerdip(14+3+3) ORDERING NUMBER: TDA7496L D97AU597A BLOCK DIAGRAM VAROUT_R 15,16 1,2,3,13, 18,19,20 VOLUME 1000m F 470nF OUTR OP AMP S1 ST-BY STBY S_GND... - Page 25 TDA7449 SGS-THOMOSN TONE CONTROL DIGITALLY CONT. AUDIO PROCESSOR Pin Configuration PIN CONNECTION CREF PGND DIG_GND ROUT TREBLE(R) LOUT TREBLE(L) R_IN2 BIN(L) BOUT(L) R_IN1 L_IN1 BOUT(R) DIP20 BIN(R) L_IN2 MUXOUT(L) MUXOUT(R) D98AU848 ORDERING NUMBER: TDA7449 BLOCK DIAGRAM MUXOUTL TREBLE(L) BIN(L) BOUT(L) L-IN1 100K L-IN2...
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Page 26: Schematic Diagram
SCHEMATIC DIAGRAM 1. GMZAN2 - 26 -... - Page 27 2. LVDS - 27 -...
- Page 28 3. MICOM - 28 -...
- Page 29 4. POWER - 29 -...
- Page 30 5. CONNECTOR & JACKS - 30 -...
- Page 31 6. AUDIO - 31 -...
- Page 32 7. CONTROL KEY - 32 -...
- Page 33 Apr. 2002 P/NO : 3828TSL072J Printed in Korea...