Service Guide
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Stock (Paper) • Cover : Snow White 150 g/ • Inside : Snow White 100 g/ 4. CHANGE CONTENTS Language : English 7. Number of pages : 24 99 ᑖ Part No. 3828TSL095Y 3. SSeerrvviiccee GGuuiiddee SSppeecciiffiiccaattiioonn 1. Model Description MODEL L1915SM SUFFIX ALAUR BRAND LG Product Name FLATRON L1915S 2. Printing Method : 5. Changes 8 7 6 5 4 3 2 1 REV. NO. Special Instructions (1) Origin Notification * LGEDI : Printed in Indonesia * LGESP : Printed in Brazil * LGENT : Printed in China * LGEWA : Printed in U.K. * LGEMX : Printed...
Stock (Paper) • Cover : Snow White 150 g/ • Inside : Snow White 100 g/ 4. CHANGE CONTENTS Language : English 7. Number of pages : 24 99 ᑖ Part No. 3828TSL095Y 3. SSeerrvviiccee GGuuiiddee SSppeecciiffiiccaattiioonn 1. Model Description MODEL L1915SM SUFFIX ALAUR BRAND LG Product Name FLATRON L1915S 2. Printing Method : 5. Changes 8 7 6 5 4 3 2 1 REV. NO. Special Instructions (1) Origin Notification * LGEDI : Printed in Indonesia * LGESP : Printed in Brazil * LGENT : Printed in China * LGEWA : Printed in U.K. * LGEMX : Printed...
Service Guide
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Website:http://biz.LGservice.com E-mail:http://www.LGEservice.com/techsup.html COLOR MONITOR SERVICE MANUAL CHASSIS NO. : CL-61 MODEL: L1915S (L1915SM-AL**R) ( ) **Same model for Service CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. *To apply the Mstar Chip.
Website:http://biz.LGservice.com E-mail:http://www.LGEservice.com/techsup.html COLOR MONITOR SERVICE MANUAL CHASSIS NO. : CL-61 MODEL: L1915S (L1915SM-AL**R) ( ) **Same model for Service CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. *To apply the Mstar Chip.
Service Guide
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...Operating Mode : Normally Black, Transmissive mode Backlight Unit : 4-CCFL (Cold Cathode Fluorescent Lamp) 2. SIGNAL (Refer to the Timing Chart) 3-1. OPTICAL CHARACTERISTICS 2-1. Contrast Ratio : 300(min), 500(Typ) 3. Video Input Signal 1) Type 2) Voltage Level a) Color 0, 0 b) Color 7, 0 c) Color 15, 0 3) Input Impedance : R, G, B Analog : 0~0.7 V : 0 Vp-p : 0.35 Vp-p : 0.7 Vp-p : 75 Ω 5. Luminance : 200(min), 250(Typ) 2-3. Power Consumption MODE H/V SYNC VIDEO POWER CONSUMPTION LED COLOR POWER ON (NORMAL) ON/ON ACTIVE less than 45 W GREEN STAND-BY...
...Operating Mode : Normally Black, Transmissive mode Backlight Unit : 4-CCFL (Cold Cathode Fluorescent Lamp) 2. SIGNAL (Refer to the Timing Chart) 3-1. OPTICAL CHARACTERISTICS 2-1. Contrast Ratio : 300(min), 500(Typ) 3. Video Input Signal 1) Type 2) Voltage Level a) Color 0, 0 b) Color 7, 0 c) Color 15, 0 3) Input Impedance : R, G, B Analog : 0~0.7 V : 0 Vp-p : 0.35 Vp-p : 0.7 Vp-p : 75 Ω 5. Luminance : 200(min), 250(Typ) 2-3. Power Consumption MODE H/V SYNC VIDEO POWER CONSUMPTION LED COLOR POWER ON (NORMAL) ON/ON ACTIVE less than 45 W GREEN STAND-BY...
Service Guide
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...Make certain that treatment person's body are important for a long time. • The module not be replaced with the manufacturer's specified parts to protect yourself from manufacturer or you want to replace with the new backlight (CCFL) or inverter circuit, must disconnect the AC adapter... permission from shock hazard during service operation. -3- If the wires are marked on the schematic diagram and the replacement parts list. PRECAUTION WARNING FOR THE SAFETY-RELATED COMPONENT. • There are some special components used in LCD monitor that are grounded through wrist ...
...Make certain that treatment person's body are important for a long time. • The module not be replaced with the manufacturer's specified parts to protect yourself from manufacturer or you want to replace with the new backlight (CCFL) or inverter circuit, must disconnect the AC adapter... permission from shock hazard during service operation. -3- If the wires are marked on the schematic diagram and the replacement parts list. PRECAUTION WARNING FOR THE SAFETY-RELATED COMPONENT. • There are some special components used in LCD monitor that are grounded through wrist ...
Service Guide
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... setup image conditions (Brightness, contrast and color tint are selected by the user in the On Screen Display. This will automatically adjust your display settings, always press the SELECT/AUTO button before entering the On Screen Display(OSD). If the display is 1280 x 1024. 4 3 1 4 Button Use these button to turn the monitor on or off. OPERATING INSTRUCTIONS FRONT VIEW REAR VIEW Power Connect Front Control Panel Front Control Panel D-Sub Signal Connect 2 1. Power Indicator This indicator lights up Contrast and Brightness adjustment. : -5- The best display mode...
... setup image conditions (Brightness, contrast and color tint are selected by the user in the On Screen Display. This will automatically adjust your display settings, always press the SELECT/AUTO button before entering the On Screen Display(OSD). If the display is 1280 x 1024. 4 3 1 4 Button Use these button to turn the monitor on or off. OPERATING INSTRUCTIONS FRONT VIEW REAR VIEW Power Connect Front Control Panel Front Control Panel D-Sub Signal Connect 2 1. Power Indicator This indicator lights up Contrast and Brightness adjustment. : -5- The best display mode...
Service Guide
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OPERATING INSTRUCTIONS CONTROLS LOCKED/UNLOCKED : MENU and This function allows you to secure the current control settings, so that they cannot be inadvertently changed. You can unlock the OSD controls at any time by pushing the MENU button and button for 3 seconds: the message "CONTROLS LOCKED" appears. WIRING DIAGRAM Connector Ass'y P/N: 6631T20020Q Connector Ass'y P/N: 6631T11012W CN105 CN104 CON002 CN102 CN103 J705 J702 J706 Connector Ass'y P/N: 6631T20024C -6- Press and hold the MENU button and button for 3 seconds: the message "CONTROLS UNLOCKED" will appear.
OPERATING INSTRUCTIONS CONTROLS LOCKED/UNLOCKED : MENU and This function allows you to secure the current control settings, so that they cannot be inadvertently changed. You can unlock the OSD controls at any time by pushing the MENU button and button for 3 seconds: the message "CONTROLS LOCKED" appears. WIRING DIAGRAM Connector Ass'y P/N: 6631T20020Q Connector Ass'y P/N: 6631T11012W CN105 CN104 CON002 CN102 CN103 J705 J702 J706 Connector Ass'y P/N: 6631T20024C -6- Press and hold the MENU button and button for 3 seconds: the message "CONTROLS UNLOCKED" will appear.
Service Guide
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... by regulator and 3.3V is stored in the main board. 3. Power Part. DESCRIPTION OF BLOCK DIAGRAM 1. The Micom distinguishes polarity and frequency of each mode is provided for the digital conversion and converts from signal cable. This part consists of video signal for LCD panel Micom. The controlled data of the H/V sync are supplied from the analog video signal to transmitter. 2. Video Controller Part. This part amplifies the level of the Scaler, ADC, LVDS...
... by regulator and 3.3V is stored in the main board. 3. Power Part. DESCRIPTION OF BLOCK DIAGRAM 1. The Micom distinguishes polarity and frequency of each mode is provided for the digital conversion and converts from signal cable. This part consists of video signal for LCD panel Micom. The controlled data of the H/V sync are supplied from the analog video signal to transmitter. 2. Video Controller Part. This part amplifies the level of the Scaler, ADC, LVDS...
Service Guide
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...This part function is also monitor by this part. 5. ON SECONDA RY 12V INVERTER CIRCUIT High Voltage output Operation description_LIPS 1. Input rectifier and filter. Output rectifier and filter. LIPS Board Block Diagram 50 ~ 60Hz LINE 100 ~ 240V EMI COMPONENTS INPUT RECTIFIER...CONTROL CIRCUIT PRIMARY PHOTO-COUPLER ISOLATION SIGNAL COLLECT- EMI components. This part function is transfer the primary energy to achive the dc output stablize, and also the over power protection is to make a pulse width modulation control and to provide the driver signal to power switch, to adjust...
...This part function is also monitor by this part. 5. ON SECONDA RY 12V INVERTER CIRCUIT High Voltage output Operation description_LIPS 1. Input rectifier and filter. Output rectifier and filter. LIPS Board Block Diagram 50 ~ 60Hz LINE 100 ~ 240V EMI COMPONENTS INPUT RECTIFIER...CONTROL CIRCUIT PRIMARY PHOTO-COUPLER ISOLATION SIGNAL COLLECT- EMI components. This part function is transfer the primary energy to achive the dc output stablize, and also the over power protection is to make a pulse width modulation control and to provide the driver signal to power switch, to adjust...
Service Guide
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Port Setup a) Copy "UserPort.sys" file to Port Setup. ADJUSTMENT Windows EDID V1.0 User Manual Operating System: MS Windows 98, 2000, XP Port Setup: Windows 98 => Don't need setup Windows 2000, XP => Need to "c:\WINNT\system32\drivers" folder b) Run Userport.exe c) Remove all default number d) Add 300-3FF 2) Edit Week of Manufacture, Year of Manufacture, Serial Number a) Input User Info Data b) Click "Update" button c) Click " Write" button e) Click Start button. f) Click Exit button. - 10 - This program is available to LCD Monitor only. 2. EDID...
Port Setup a) Copy "UserPort.sys" file to Port Setup. ADJUSTMENT Windows EDID V1.0 User Manual Operating System: MS Windows 98, 2000, XP Port Setup: Windows 98 => Don't need setup Windows 2000, XP => Need to "c:\WINNT\system32\drivers" folder b) Run Userport.exe c) Remove all default number d) Add 300-3FF 2) Edit Week of Manufacture, Year of Manufacture, Serial Number a) Input User Info Data b) Click "Update" button c) Click " Write" button e) Click Start button. f) Click Exit button. - 10 - This program is available to LCD Monitor only. 2. EDID...
Service Guide
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... 74LS06 B Figure 1. Cable Connection - 11 - a) MODULE : To select applied module. b) NVRAM INIT : EEPROM initialize(24C08) c) ADC OFFSET : The lowest value of the display. 2) Wait for about 3 seconds and press MENU, POWER switch with 1 second interval. 3) The SVC OSD menu contains additional menus that the User OSD menu as described below. SERVICE OSD 1) Turn off the power switch at the front side of input leves sets to digitally 255. d) ADC...
... 74LS06 B Figure 1. Cable Connection - 11 - a) MODULE : To select applied module. b) NVRAM INIT : EEPROM initialize(24C08) c) ADC OFFSET : The lowest value of the display. 2) Wait for about 3 seconds and press MENU, POWER switch with 1 second interval. 3) The SVC OSD menu contains additional menus that the User OSD menu as described below. SERVICE OSD 1) Turn off the power switch at the front side of input leves sets to digitally 255. d) ADC...
Service Guide
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TROUBLESHOOTING GUIDE 1. YES CHECK KEY CONTROL CONNECTOR ROUTINE CHECK POWER NO BOARD, AND FIND OUT A SHORT POINT AS OPENING EACH POWER LINE NO CHECK 5VS LINE (OPEN CHECK) NO PROBLEM IS U201 PIN114 (3.3V) VOLTAGE ? YES CHECK U201 PIN 122 PULSE YES CHECK U201 NO NO - 12 - CHECK 3.3V LINE CHECK X-TAL YES CHECK U501 PIN 8 Voltage (5V) ? NO POWER NO POWER (POWER INDICATOR OFF) CHECK J705 VOLTAGE PIN5, PIN6 (5V)?
TROUBLESHOOTING GUIDE 1. YES CHECK KEY CONTROL CONNECTOR ROUTINE CHECK POWER NO BOARD, AND FIND OUT A SHORT POINT AS OPENING EACH POWER LINE NO CHECK 5VS LINE (OPEN CHECK) NO PROBLEM IS U201 PIN114 (3.3V) VOLTAGE ? YES CHECK U201 PIN 122 PULSE YES CHECK U201 NO NO - 12 - CHECK 3.3V LINE CHECK X-TAL YES CHECK U501 PIN 8 Voltage (5V) ? NO POWER NO POWER (POWER INDICATOR OFF) CHECK J705 VOLTAGE PIN5, PIN6 (5V)?
Service Guide
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NO RASTER (OSD IS NOT DISPLAYED) - YES J705 PIN9 5V? CONFIRM BRIGHTNESS NO OSD CONTRL STATE. 2. CHECK MICOM DIM-ADJ PORT CHECK PULSE AS CONTACTING SCOPE PROBE TO CAUTION LABEL. (CONTACT PROBE TO CAUTION LABEL. YES NO CHECK LIPS NO CHECK MICOM INV ON/OFF PORT. 1. YES REPLACE CCFL LAMP IN THE LCD MODULE NO - 13 - YES J705 PIN10 5V? CAN YOU SEE PULSE AT YOUR SCOPE? LIPS LIPS NO RASTER (OSD IS NOT DISPLAYED) J705 PIN5, PIN6 5V? 2.
NO RASTER (OSD IS NOT DISPLAYED) - YES J705 PIN9 5V? CONFIRM BRIGHTNESS NO OSD CONTRL STATE. 2. CHECK MICOM DIM-ADJ PORT CHECK PULSE AS CONTACTING SCOPE PROBE TO CAUTION LABEL. (CONTACT PROBE TO CAUTION LABEL. YES NO CHECK LIPS NO CHECK MICOM INV ON/OFF PORT. 1. YES REPLACE CCFL LAMP IN THE LCD MODULE NO - 13 - YES J705 PIN10 5V? CAN YOU SEE PULSE AT YOUR SCOPE? LIPS LIPS NO RASTER (OSD IS NOT DISPLAYED) J705 PIN5, PIN6 5V? 2.
Service Guide
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CHECK PIN122, 123 NO SOLDERING CONDITION 2. IS PULSE APPEARED AT SIGNAL PINS? YES TROUBLE IN CABLE OR LCD MODULE NO CHECK CONNECTION LINE FROM D-SUB TO U501 - 14 - NO RASTER (OSD IS NOT DISPLAYED) - YES NO CHECK U801 1. TROUBLE IN U201 U501 PIN43 IS 64KHz H-SYNC? PIN44 IS 60Hz V-SYNC? YES U201 PIN122, 123 OSCILLATE AS 12MHZ? CHECK X501 3. MST9111B NO RASTER (OSD IS NOT DISPLAYED) U201 POWER PIN 8,114 3.3V? 3. AT MODE 12?
CHECK PIN122, 123 NO SOLDERING CONDITION 2. IS PULSE APPEARED AT SIGNAL PINS? YES TROUBLE IN CABLE OR LCD MODULE NO CHECK CONNECTION LINE FROM D-SUB TO U501 - 14 - NO RASTER (OSD IS NOT DISPLAYED) - YES NO CHECK U801 1. TROUBLE IN U201 U501 PIN43 IS 64KHz H-SYNC? PIN44 IS 60Hz V-SYNC? YES U201 PIN122, 123 OSCILLATE AS 12MHZ? CHECK X501 3. MST9111B NO RASTER (OSD IS NOT DISPLAYED) U201 POWER PIN 8,114 3.3V? 3. AT MODE 12?
Service Guide
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TROUBLE IN DPM CHECK R773, R775 (SYNC) ? YES TROUBLE IN U501 NO CHECK PC PC IS NOT GOING INTO DPM OFF MODE NO CHECK H/V SYNC LINE - 15 - YES CHECK U501 PIN 43.44 SYNC PULSE ? TROUBLE IN DPM 4.
TROUBLE IN DPM CHECK R773, R775 (SYNC) ? YES TROUBLE IN U501 NO CHECK PC PC IS NOT GOING INTO DPM OFF MODE NO CHECK H/V SYNC LINE - 15 - YES CHECK U501 PIN 43.44 SYNC PULSE ? TROUBLE IN DPM 4.
Service Guide
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... 3550TKK452G 6871TST717A 3313TL9053A 6871TPT271R 6871TPT271B 4951TKS145N 4951TKS145P 4814TKK268A 6850TD9004J Description CABINET ASSEMBLY, L1915S BRAND TKL104 LIFE IS GOOD 89483-For Australia CABINET ASSEMBLY, L1915S BRAND TKL104 89483 WA-LOCAL -For Europe LCD(LIQUID CRYSTAL DISPLAY), LM190E03-B4K1 LG PHILPS TFT COLOR 20T,TN,250NITS,SXGA,LVDS BACK COVER ASSEMBLY, L1915S 3808TKL086A ABS,8D966 -For Australia BACK COVER ASSEMBLY, L1915S TKL086A WA-LOCAL -For Europe TILT SWIVEL ASSEMBLY, L1915S .
... 3550TKK452G 6871TST717A 3313TL9053A 6871TPT271R 6871TPT271B 4951TKS145N 4951TKS145P 4814TKK268A 6850TD9004J Description CABINET ASSEMBLY, L1915S BRAND TKL104 LIFE IS GOOD 89483-For Australia CABINET ASSEMBLY, L1915S BRAND TKL104 89483 WA-LOCAL -For Europe LCD(LIQUID CRYSTAL DISPLAY), LM190E03-B4K1 LG PHILPS TFT COLOR 20T,TN,250NITS,SXGA,LVDS BACK COVER ASSEMBLY, L1915S 3808TKL086A ABS,8D966 -For Australia BACK COVER ASSEMBLY, L1915S TKL086A WA-LOCAL -For Europe TILT SWIVEL ASSEMBLY, L1915S .
Service Guide
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... W 5% 1608 R/TP - 18 - NO. REPLACEMENT PARTS LIST CAUTION: BEFORE REPLACING ANY OF THESE COMPONENTS, READ CAREFULLY THE SAFETY PRECAUTIONS IN THIS MANUAL. * NOTE : S SAFETY Mark AL ALTERNATIVE PARTS *S *AL LOC. NO. DATE: 2004. 08.12 DESCRIPTION / SPECIFICATION C803 C804 C805 C806 C807 C808 C809 C810 C812 C814...TP SOD3 ICs U201 U501 U502 U801 Q502 0IPRPM3008B 0IZZTSZ531A 0ISG240860B 0IPMGKE011A 0IKE704200H MST9111B(ANALOG) MSTAR 128P MYSON 44P - MAIN BOARD CAPACITORS DATE: 2004. 08.12 DESCRIPTION / SPECIFICATION C204 C205 C206 C207 C208 C209 C210 C211 C214 C215 C216 C217 C218 ...
... W 5% 1608 R/TP - 18 - NO. REPLACEMENT PARTS LIST CAUTION: BEFORE REPLACING ANY OF THESE COMPONENTS, READ CAREFULLY THE SAFETY PRECAUTIONS IN THIS MANUAL. * NOTE : S SAFETY Mark AL ALTERNATIVE PARTS *S *AL LOC. NO. DATE: 2004. 08.12 DESCRIPTION / SPECIFICATION C803 C804 C805 C806 C807 C808 C809 C810 C812 C814...TP SOD3 ICs U201 U501 U502 U801 Q502 0IPRPM3008B 0IZZTSZ531A 0ISG240860B 0IPMGKE011A 0IKE704200H MST9111B(ANALOG) MSTAR 128P MYSON 44P - MAIN BOARD CAPACITORS DATE: 2004. 08.12 DESCRIPTION / SPECIFICATION C204 C205 C206 C207 C208 C209 C210 C211 C214 C215 C216 C217 C218 ...