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Service Guide Specification
Service Guide Specification
1.
Model Description
L1552S-SFN
MODEL
L1552S-BFN
SUFFIX
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 L1552S-SF
FLATRON L1552S-BF
CHANGE
Part No.
MFL30290813
CONTENTS
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Table of Contents
Related Manuals for LG Flatron L1552S
Summary of Contents for LG Flatron L1552S
- Page 1 Service Guide Specification Service Guide Specification Model Description L1552S-SFN MODEL BRAND L1552S-BFN Part No. MFL30290813 FLATRON L1552S-SF SUFFIX Product Name FLATRON L1552S-BF 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. : LM57A MODEL: L1552S (L1552S-BFQ.ACN*QP) L1552S (L1552S-SFQ.ACN*QP) ) **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-Set Disassembly Like a picture. # 2-1 # 2-2 1. Pull the front cover upward. 2. Then, let the all latches are separated.(#3-1~3-2) 3. Put the front face down. Disassemble back cover. - 8 -... - Page 11 DISASSEMBLY-Stand 1. In assembly state, Twist Stand Body to 2. Pull Stand and Separate Stand from Right side. Monitor set. # 3-1 # 3-2 3. Push the four latches on the bottom to the outside and Separate Stand Body & Base. (Reference the #3-2) - 9 -...
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Page 12: Block Diagram
BLOCK DIAGRAM Module D-Sub - 9 -... -
Page 13: 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 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 ADAPTER LED IS IT GREEN? CHECK ADAPTER OUTPUT VOLTAGE(12V)? CHECK CHECK 3.3 LINE U801 PIN1 VOLTAGE (OPEN CHECK) (3.3V) ? NO PROBLEM CHECK U803 PIN3(1.8V) IS U201 PIN90 (3.3V) CHECK 3.3V LINE VOLTAGE ? CHECK U201 PIN 96... - Page 17 2. NO RASTER (OSD IS NOT DISPLAYED) – LIPS NO RASTER (OSD IS NOT DISPLAYED) CHECK ADAPTER AND U701 12 LINE PIN13 12V? CHECK MICOM INV U701 PIN2 ON/OFF PORT. OVER THAN 1.5V? 1. CONFIRM BRIGHTNESS OSD CONTRL STATE. U701 PIN8 2.
- Page 18 3. NO RASTER (OSD IS NOT DISPLAYED) – Mstar NO RASTER (OSD IS NOT DISPLAYED) U201 CHECK U801 PIN 16, 75 3.3V? U201 1. CHECK PIN122, 123 PIN96, 97 SOLDERING CONDITION OSCILLATE AS 2. CHECK X201 14.31MHZ? 3. TROUBLE IN U201 U201 CHECK CONNECTION PIN27 IS 48KHz H-SYNC?
- Page 19 4. TROUBLE IN DPM TROUBLE IN DPM CHECK CHECK PC PC IS NOT GOING R442, R443 INTO DPM OFF MODE CHECK U201 PIN 27,28 CHECK H/V SYNC LINE SYNC PULSE ? TROUBLE IN U201 Waveforms 3 R217, R781 V-Sync R216, R778 H-Sync - 16 -...
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Page 20: Exploded View
EXPLODED VIEW - 23 -... -
Page 21: Exploded View Parts List
L1552S A 15" L1552 Cabinet ASSY ACQ30329102 L1552S A 15" L1552 Cabinet ASSY -SILVER CHINA 6304FLP278A LM170E01-TLB1 DRIVER 17.0INCH 1280X1024 300CD COLOR 72% - - - LG PHILIPS LCD or 6304FNE003A 150XG04TB _ZBD 15INCH 1024X768 250CD COLOR 72% ZBD, 16MS, 450:1, LVDS or 6304FCP005A CLAA150XP01 DRIVER 15.0INCH 1024X768 250CD COLOR 80% - 500VS1 -... -
Page 22: Schematic Diagram
SCHEMATIC DIAGRAM 1. MAIN BOARD - 24 -... - Page 23 2. D-SUB/KEY BOARD/DC-DC - 24 -...
- Page 24 3. INVERTER - 24 -...
- Page 25 Jul. 2006 P/NO : MFL30290813 Printed in China...