Related Manuals for LG SDM-S74
Summary of Contents for LG SDM-S74
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Page 1: Color Monitor
COLOR MONITOR SERVICE MANUAL CHASSIS NO. : CL-42 MODEL: SDM-S74, SDM-S94 CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. -
Page 2: Table Of Contents
: 1280 x 1024 / 60Hz 19 inch (SDM-S94) 5. POWER SUPPLY Pixel Pitch : 0.264 (H) x 0.264 (V) (SDM-S74) 5-1. Power : AC 100~240V, 50/60Hz , 1.0A 0.294 (H) x 0.294 (V) (SDM-S94) 5-2. Power Consumption Color Depth : 16.2M colors (SDM-S74) -
Page 3: Signal Connector Pin Assignment
Signal Connector Pin Assignment • DVI-D Connector (Digital) Signal (DVI-D) Signal (DVI-D) T. M. D. S. Data2- Hot Plug Detect T. M. D. S. Data2+ T. M. D. S. Data0- T. M. D. S. Data0+ T. M. D. S. Data2/4 Shield T. -
Page 4: Precautions
PRECAUTION WARNING FOR THE SAFETY-RELATED COMPONENT. CAUTION • There are some special components used in LCD Please use only a plastic screwdriver to protect yourself monitor that are important for safety. These parts are from shock hazard during service operation. marked on the schematic diagram and the replacement parts list. - Page 5 << Dot Clock (MHz), Horizontal Frequency (kHz), Vertical Frequency (Hz), Horizontal etc... (µs), Vertical etc... (ms) >> Total Period Video Active Time Front Porch Back Porch Blanking time Sync Sync Duration Mode Resolution Frequency Polarity Clock Sort – 31.500 720x400 28.350 70Hz 70.156Hz...
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Page 6: Operating Instructions
4. OK Button This button actives tge selected menu item and adjustments made using the buttons( 5. ECO Button This button is used to reduce the power consumption. REAR VIEW(SDM-S74) REAR VIEW(SDM-S94) HD15(RGB) input AC IN HD15(RGB) input connector connector... -
Page 7: Wiring Diagram
WIRING DIAGRAM (SDM-S74) Connector Ass’y P/N: 6631T11016W J702 CN001 J705 CN003 J706 Connector Ass’y P/N: 6631T25005K Connector Ass’y P/N: 6631T10003H - 7 -... - Page 8 WIRING DIAGRAM (SDM-S94) Connector Ass’y P/N: 6631T11016W J702 J705 J706 Connector Ass’y P/N: 6631T25005H Connector Ass’y P/N: 6631T10003H - 8 -...
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Page 9: Disassembly
DISASSEMBLY(SDM-S74) REAR CABINET REMOVEL. 1) Please lift the central inside edge of Front bezel 2) Progress to left and lifts bezel furtively and extracts upward with fingertip like picture, then latch will be latch. departed. 3) Progress to right and extracts latch of bezel upper part 4) Please pull upper side edge of Rear cabinet outside by same method. - Page 10 DISASSEMBLY(SDM-S94) REAR CABINET REMOVEL. 1) Please lift the central inside edge of Front bezel 2) Progress upward and lifts bezel furtively and extracts upward with fingertip like picture then latch will be latch. departed. 3) Progress continuously and extracts latch of bezel upper 4) Progress continuously and extracts latch of bezel left by same method.
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Page 11: Block Diagram
BLOCK DIAGRAM D-Sub DVI-D - 11 -... -
Page 12: Description Of Block Diagram
DESCRIPTION OF BLOCK DIAGRAM 1. Video Controller Part & Display Data Transmitter Part. This part amplifies the level of video signal for the digital conversion and converts from the analog video signal to the digital video signal using a pixel clock. The pixel clock for each mode is generated by the PLL. -
Page 13: Lips Board Block Diagram
LIPS Board Block Diagram 50 ~ 60Hz 100KHz HVDC INPUT RECTIFIER ENERGY OUTPUT RECTIFIER COMPONENTS AND FILTER TRANSFER AND FILTER LINE 100 ~ 240V SIGNAL PHOTO- COLLECTI CONTROL COUPLER CIRCUIT ISOLATION PRIMARY SECONDARY Operation description_LIPS 1. EMI components. This part contains of EMI components to comply with global marketing EMI standards like FCC, VCCI CISPR, the circuit included a line-filter, across line capacitor and of course the primary protection fuse. -
Page 14: Adjustment
ADJUSTMENT 1. Procedures of how to go to service mode. 3. Operation 1) Enter the service mode of this unit by turning on the Data is manually set to improve the productivity. The power while pressing and holding the " " key brightness, contrast, and backlight are set to 50, 70 simultaneously. -
Page 15: Troubleshooting Guide
TROUBLESHOOTING GUIDE 1. NO POWER NO POWER (POWER INDICATOR OFF) CHECK POWER CHECK J705 BOARD, AND FIND VOLTAGE OUT A SHORT POINT PIN 5, 6, 8(5V) AS OPENING PIN 1, 2(12V)? EACH POWER LINE CHECK CHECK 5VS LINE U501 PIN 8 Voltage (OPEN CHECK) (5V) ? NO PROBLEM... - Page 16 2. NO RASTER (OSD IS NOT DISPLAYED) – LIPS NO RASTER (OSD IS NOT DISPLAYED) CHECK J705 PIN 5, 6, 8(5V) CHECK LIPS PIN 1, 2(12V)? CHECK MICOM INV CHECK ON/OFF PORT. J705 PIN 9 1. CONFIRM BRIGHTNESS CHECK OSD CONTRL STATE. J705 PIN 10 2.
- Page 17 3. NO RASTER (OSD IS NOT DISPLAYED) – MST9131B NO RASTER (OSD IS NOT DISPLAYED) U201 CHECK U803 POWER PIN 72, (2.5V REGULATOR), 82, 94(3.3V) CHECK U804 PIN 64, 85 (2.5V)? (3.3V REGULATOR) 1. CHECK PIN11, 12 U501 SOLDERING CONDITION PIN11, 12 OSCILLATE AS 2.
- Page 18 4. TROUBLE IN DPM TROUBLE IN DPM CHECK R734, R741 CHECK PC (INPUT-1)SYNC. PC IS NOT GOING R732, R755 INTO DPM OFF MODE (INPUT-2)SYNC. CHECK TROUBLE IN U501 PIN 24 SIGNAL CABLE (0V) ? TROUBLE IN PC - 18 -...
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Page 20: Exploded View Parts List
6871TPT241N PWB(PCB) ASSEMBLY,POWER, OS73 POWER TOTAL SONY SPI FOR 17INCH AUO (SDM-S74) 6871TPT243F PWB(PCB) ASSEMBLY,POWER, AI-0032C POWER TOTAL LIEN CHANG OS73L LIPS FOR NEW CMO (SDM-S74) 6871TPT249A PWB(PCB) ASSEMBLY,POWER, AI-0031(OX93L) POWER TOTAL LIEN CHANG 19"SONY STEP UP O/S FOR FUJITSU(SDM-S94) 6871TPT249B PWB(PCB) ASSEMBLY,POWER, AI-0031B(OS93L) POWER TOTAL LIEN CHANG 19"... -
Page 21: 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: 2004. 02. 03. DATE: 2004. 02. 03. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. - Page 22 MYSON 44P PLCC OTP LOS74DM UC/JP/CN(SDM-S74)U.S.A R526 0RJ1000D677 100 OHM 1/10 W 5% 1608 R/TP U501 0IZZTSZ352B MYSON 44P PLCC OTP LS74DM AEP(SDM-S74)TCO99, Europe R527 0RJ1000D677 100 OHM 1/10 W 5% 1608 R/TP U501 0IZZTSZ352D MYSON 44P PLCC OTP LS74DM TCO03(SDM-S74)
- Page 23 R741 0RJ4701D677 4.7K OHM 1/10 W 5% 1608 R/TP 6600R000002 SKQRAAE010 J-ALPS 12V DC 50MA R742 0RJ0000D677 0 OHM 1/10 W 5% 1608 R/TP(SDM-S74)CMO 6600R000002 SKQRAAE010 J-ALPS 12V DC 50MA R742 0RJ3301D677 3.3K OHM 1/10 W 5% 1608 R/TP(SDM-S94)FUJITSU 6600R000002...
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Page 24: Schematic Diagram
SCHEMATIC DIAGRAM 1. MST9131B - 24 -... - Page 25 2. MICOM - 25 -...
- Page 26 3. POWER - 26 -...
- Page 27 4. CONNECTOR & JACKS - 27 -...
- Page 28 Feb. 2004 P/NO : 3828TSO059Q Printed in Korea...