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Service Guide Specification
Service Guide Specification
1.
Model Description
L1550S-SNN
MODEL
L1550S-BNN
SUFFIX
ANAUER
2.
Printing Specification
1. Trim Size (Format) :
2. Printing Colors
• Cover :
LG COLORS
• Inside :
Black
3. Stock (Paper)
• Cover :
Snow White 150 g/
• Inside :
Snow White 100 g/
4. Printing Method :
5. Bindery :
6. Language :
7. Number of pages :
3.
Special Instructions
(1) Origin Notification
* LGEDI : Printed in Indonesia
* LGESP : Printed in Brazil
* LGENT : Printed in China
4.
Changes
8
7
6
5
4
3
2
1
REV.
MM/DD/YY
NO.
BRAND
Product Name
215mm x 280 mm
Saddle stitch
English
28 (Including blank 1page)
* LGEWA : Printed in U.K.
* LGEMX : Printed in Mexico
* LGEIL : Printed in India
CHANGE NO.
LG
FLATRON L1550S-SN
FLATRON L1550S-BN
CHANGE
Part No.
3828TSL094N
CONTENTS
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Table of Contents
Related Manuals for LG FLATRON L1550S-SN
Summary of Contents for LG FLATRON L1550S-SN
- Page 1 Service Guide Specification Service Guide Specification Model Description L1550S-SNN MODEL BRAND L1550S-BNN Part No. 3828TSL094N FLATRON L1550S-SN SUFFIX ANAUER Product Name FLATRON L1550S-BN Printing Specification 1. Trim Size (Format) : 215mm x 280 mm 2. Printing Colors • Cover : LG COLORS •...
- Page 2 Pagination sheet Pagination sheet Front cover English English English English English Cover Inside blank …. ….. English English English English English Rear cover Rear Inside Cover ….
- Page 3 Website:http://biz.LGservice.com E-mail:http://www.LGEservice.com/techsup.html COLOR MONITOR SERVICE MANUAL CHASSIS NO. : CL-82 MODEL: L1550S-SN (L1550S-SNN.AB**EP,AN**EP) L1550S-BN (L1550S-BNN.AB**EP,AN**EP) ) **Same model for Service CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. *To apply the MSTAR Chip.
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Page 4: Table Of Contents
CONTENTS SPECIFICATIONS ........... 2 SERVICE OSD ............13 PRECAUTIONS ............3 TROUBLESHOOTING GUIDE ......14 TIMING CHART ............7 WIRING DIAGRAM ..........18 DISASSEMBLY ............8 EXPLODED VIEW...........19 BLOCK DIAGRAM ........... 9 REPLACEMENT PARTS LIST .......21 DESCRIPTION OF BLOCK DIAGRAM....10 SCHEMATIC DIAGRAM ......... -
Page 5: Precautions
PRECAUTION WARNING FOR THE SAFETY-RELATED COMPONENT. WARNING BE CAREFUL ELECTRIC SHOCK ! • There are some special components used in LCD monitor that are important for safety. These parts are • If you want to replace with the new backlight (CCFL) or marked on the schematic diagram and the inverter circuit, must disconnect the AC adapter... -
Page 6: Servicing Precautions
SERVICING PRECAUTIONS CAUTION: Before servicing receivers covered by this 9. Use with this receiver only the test fixtures specified in service manual and its supplements and addenda, read this service manual. and follow the SAFETY PRECAUTIONS on page 3 of this CAUTION: Do not connect the test fixture ground strap publication. - Page 7 General Soldering Guidelines Replacement 1. Use a grounded-tip, low-wattage soldering iron and 1. Carefully insert the replacement IC in the circuit board. appropriate tip size and shape that will maintain tip 2. Carefully bend each IC lead against the circuit foil pad and solder it.
- Page 8 Circuit Board Foil Repair At Other Connections Excessive heat applied to the copper foil of any printed Use the following technique to repair the defective copper circuit board will weaken the adhesive that bonds the foil pattern at connections other than IC Pins. This technique to the circuit board causing the foil to separate from or involves the installation of a jumper wire on the "lift-off"...
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Page 9: Timing Chart
TIMING CHART VIDEO SYNC << Dot Clock (MHz), Horizontal Frequency (kHz), Vertical Frequency (Hz), Horizontal etc... (µs), Vertical etc... (ms) >> Total Video Sync Front Blanking Sync MODE H / V Frequency Period Active Duration Porch Time Resolution Polarity Clock ( E ) Time ( A ) ( D ) -
Page 10: Disassembly
DISASSEMBLY 1. Pull the front cover upward. Remove the screws. 2. Then, let the all latches are separated. 3. Put the front face down. Remove the 6 screws from each up of metal frame Disassemble back cover. Remove Al-tape from control pcb fix. Pell off Al-tape from panel. -
Page 11: Block Diagram
BLOCK DIAGRAM - 9 -... -
Page 12: Description Of Block Diagram
DESCRIPTION OF BLOCK DIAGRAM 1. Video Controller 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. The range of the pixel clock is from 25MHz to 78.75MHz. -
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- COLLENT- COUPLER COMTROL ISOLATI ON CIRCUIT 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 Windows EDID V1.0 User Manual 2. EDID Read & Write 1) Run WinEDID.exe Operating System: MS Windows 98, 2000, XP Port Setup: Windows 98 => Don’t need setup Windows 2000, XP => Need to Port Setup. This program is available to LCD Monitor only. 1. -
Page 15: Service Osd
SERVICE OSD 1) Turn off the power switch at the front side of the display. 2) Wait for about 5 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. a) Auto Color : W/B balance and Automatically sets the gain and offset value. -
Page 16: Troubleshooting Guide
TROUBLESHOOTING GUIDE 1. NO POWER NO POWER (POWER INDICATOR OFF) CHECK POWER BOARD, AND FIND OUT A SHORT CHECK J707 VOLTAGE POINT AS OPENING PIN5, PIN6 (5V)? EACH POWER LINE CHECK CHECK 5VS LINE U501 PIN VOLTAGE (OPEN CHECK) (5V) ? NO PROBLEM CHECK KEY CONTROL CONNECTOR ROUTINE... - Page 17 2. NO RASTER (OSD IS NOT DISPLAYED) – LIPS NO RASTER (OSD IS NOT DISPLAYED) CHECK POWER BOARD, J707 AND FIND OUT A SHORT PIN5, PIN6 POINT AS OPENING EACH POWER LINE CHECK MICOM INV J707 PIN2 ON/OFF PORT. 2.5V? 1.
- Page 18 3. NO RASTER (OSD IS NOT DISPLAYED) – Mstar NO RASTER (OSD IS NOT DISPLAYED) U201 CHECK U801 (17", 19") PIN 18, 90 CHECK U803 (15") 3.3V? U201 1. CHECK PIN122, 123 PIN96, 97 SOLDERING CONDITION OSCILLATE AS 2. CHECK X501 12MHZ? 3.
- Page 19 4. TROUBLE IN DPM TROUBLE IN DPM CHECK PC CHECK PC IS NOT GOING R216, R217 INTO DPM OFF MODE R778, R781 CHECK U501 PIN 43.44 CHECK H/V SYNC LINE SYNC PULSE ? TROUBLE IN U501 Waveforms 3 R217, R781 V-Sync R216, R778 H-Sync - 17 -...
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Page 20: Wiring Diagram
WIRING DIAGRAM Connector Ass’y P/N: 6631T11012R Connector Ass’y P/N: 6631T11022C - 18 -... -
Page 21: Exploded View
EXPLODED VIEW - 19 -... - Page 22 CABINET ASSEMBLY, L1550 BRAND 3090TKL140 BK 6304FCP005A LCD(LIQUID CRYSTAL DISPLAY), CLAA150XP01 CHUNGHWA PICTURE TUBES LTD. TFT COLOR 0/3/3 DOT,250NT/16MS/PSWG 6304FLP156A LCD(LIQUID CRYSTAL DISPLAY), LM150X08-A4NA LG PHILPS TFT COLOR PSWG,LVDS,16MS,SS S D-IC LPL NJ,250NITS 3809TKL110A BACK COVER ASSEMBLY, L1550 3808TKL112 . 3809TKL110B...
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Page 23: 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: 2005. 03. 16. DATE: 2005. 03. 16. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. - Page 24 DATE: 2005. 03. 16. DATE: 2005. 03. 16. *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION *S *AL LOC. NO. PART NO. DESCRIPTION / SPECIFICATION R530 0RJ1002D677 10K OHM 1/10 W 5% 1608 R/TP 0RJ4701D677 4.7K OHM 1/10 W 5% 1608 R/TP R534 0RJ0000D677 0 OHM 1/10 W 5% 1608 R/TP...
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Page 25: Schematic Diagram
SCHEMATIC DIAGRAM 1. TSU56AL / TSU16AL - 23 -... - Page 26 2. MICOM - 24 -...
- Page 27 3.POWER - 25 -...
- Page 28 4. CONNECTOR & JACKS - 26 -...
- Page 29 Mar. 2005 P/NO : 3828TSL094N Printed in Korea...