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Service Manual - Page 1
... E-mail:http://www.LGEservice.com/techsup.html
COLOR MONITOR SERVICE MANUAL
CHASSIS NO. : CL-82
MODEL:
L1750SQ-SN (L1750SQ-SNN.AN**QP)
L1750SQ-BN (L1750SQ-BNN.AN**QP)
L1750SQ-WN (L1750SQ-WNN.AN**QP)
( ) **Same model for Service
CAUTION
BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
*To apply the MSTAR Chip.
龙泉现...
Service Manual - Page 3
...(9.07'') : 389.2 mm (15.32'')
8. LCD CHARACTERISTICS
Type
: TFT Color LCD Module
Active Display Area : 17 inch
Size
: 358...SPECIFICATIONS 2 PRECAUTIONS 3 TIMING CHART 7 DISASSEMBLY 8 BLOCK DIAGRAM 9 DESCRIPTION OF BLOCK DIAGRAM 10 ADJUSTMENT 12
SERVICE OSD 13 TROUBLESHOOTING GUIDE 14 WIRING DIAGRAM 18 EXPLODED VIEW 19 REPLACEMENT PARTS LIST 21 SCHEMATIC DIAGRAM 23
SPECIFICATIONS...
Service Manual - Page 4
... permission from shock hazard during service operation.
-3-
龙泉现代YDW资料收藏 It is essential that these critical parts should be exposed to the screen.
• Do not scratch or press on the schematic diagram and the replacement parts list. TAKE CARE DURING HANDLING THE LCD MODULE WITH BACKLIGHT UNIT.
•...
Service Manual - Page 5
... probe. Test high voltage only by measuring it . (Most replacement ES devices are correctly installed. 8. Discharge the picture tube anode only by (a) first connecting one end of this publication. Unless specified otherwise in this service manual, lubrication of electrolytic capacitors may result in this service manual. Always remove the test receiver ground lead last.
9. Some...
Service Manual - Page 9
....
# 8
Remove Al-tape from each side of metal frame.
-8-
龙泉现代YDW资料收藏 Remove the 4 screws from control pcb fix. DISASSEMBLY
# 1
# 2
Disassembly Hinge Cover.
# 3
Remove the screws. # 4
1. Then, let the all latches are separated. 3. Pull the front cover upward. 2.
Service Manual - Page 10
TSU16AL & 78D33 TR(KTA1273)
R,G,B differential
LVDS (Low Voltage Differential Signaling)
3.3V
12V 5V
AC Input
LIPS
1.8V
1.8V
TSU16AL
including
(ADC/LVDS/SCALER
3.3V
/INPUT SWITCHING
/TMDS)
MTV312 MICOM
D-SUB
R,G,B, H/V Sync BLOCK DIAGRAM
-9-
龙泉现代YDW资料收藏
5V
LCD Module
5V
3.3V
3.3V Reg.
Service Manual - Page 12
...COMTROL CIRCUIT
PRIMARY
PHOTOCOUPLER ISOLATI ON
SIGNAL COLLENT-
This part function is to make a pulse width modulation control and to provide the driver signal to power switch, to adjust the duty ...a bridge rectifier and a bulk capacitor.
3. This part function is also monitor by this part.
5. This part contains of course the primary protection fuse.
2. Output rectifier and filter.
Service Manual - Page 13
... 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. Port Setup a) Copy "UserPort.sys" file to LCD Monitor only.
2. ADJUSTMENT
Windows EDID V1.0 User Manual
Operating System: MS...
Service Manual - Page 14
...) h) R/G/B-Gain : Allows you to set the R/G/B-Gain value manually.(Analog Only) i) MODULE : To select applied module. a) Auto Color : W/B balance and Automatically sets the gain and offset value. b) NVRAM INIT : EEPROM initialize.(24C08) c) CLEAR ETI : To initialize using time. Cable Connection - 13 -
龙泉现代YDW资料收藏 SERVICE OSD
1) Turn off ).
Service Manual - Page 15
...-#96
- 14 -
龙泉现代YDW资料收藏 NO POWER
NO POWER (POWER INDICATOR OFF)
CHECK J705 VOLTAGE
NO
PIN5, PIN6 (5V)?
TROUBLESHOOTING GUIDE
1.
YES
CHECK
NO
U501 PIN 8 Voltage
(5V) ? YES
CHECK KEY CONTROL CONNECTOR ROUTINE
CHECK POWER BOARD, AND FIND OUT A SHORT POINT AS OPENING EACH POWER...
Service Manual - Page 16
LIPS
NO RASTER (OSD IS NOT DISPLAYED)
J705
NO
PIN5, PIN6
5V? YES
CHECK
PULSE AS
CONTACTING SCOPE
PROBE TO CAUTION LABEL. 2....ADJ PORT
LIPS
- 15 -
龙泉现代YDW资料收藏 YES
J705 PIN9
NO
2.5V?
YES
REPLACE CCFL LAMP IN THE LCD MODULE
CHECK POWER BOARD, AND FIND OUT A SHORT POINT AS OPENING EACH POWER LINE
CHECK MICOM INV ON/OFF PORT.
1....
Service Manual - Page 17
... NOT DISPLAYED) -
YES
TROUBLE IN CABLE OR LCD MODULE
CHECK CONNECTION LINE FROM D-SUB TO U501
Waveforms
1 U201-#96, 97
2 U501-#43 H-SYNC
2 U501-#44 V-SYNC
- 16 -
龙泉现代YDW资料收藏 CHECK PIN122, 123 SOLDERING CONDITION
2.
NO
2
PIN44 IS 60Hz V-SYNC? 3. MSTAR
NO RASTER (OSD IS NOT DISPLAYED...
Service Manual - Page 18
YES
TROUBLE IN U501
NO
CHECK PC
PC IS NOT GOING
INTO DPM OFF MODE
NO
CHECK H/V SYNC LINE
Waveforms
3 R216, R778 H-Sync
3 R217, R781 V-Sync
- 17 -
龙泉现代YDW资料收藏 TROUBLE IN DPM
TROUBLE IN DPM
CHECK
3
R216, R217
R778, R781
YES
CHECK U501 PIN 43.44 SYNC PULSE ? 4.
Service Manual - Page 21
...1720 DOCKING,2PIN,450V POWER TOTAL LIEN CHANG PB FREE MAIN TOTAL ASSEMBLY, L1750SN TSU16AL - EXPLODED VIEW PARTS LIST
Ref. TILT STAND BASE-SILVER,BLACK TILT SWIVEL ASSEMBLY, LX 50S - LPL BRAND CL-82-...ABS TCO03 8MS JP-VER LCD(LIQUID CRYSTAL DISPLAY), LM170E01-A6K4 LG PHILPS TFT COLOR 8MS,LPL NJ/KUMI,PB FREE,EGI,TI S D-IC,SXGA,LVDS LCD(LIQUID CRYSTAL DISPLAY), LM170E01-A6K3 LG PHILPS TFT COLOR 8MS,...
Service Manual - Page 22
... - 80V - - 4NSE
*S *AL LOC. MAIN BOARD CAPACITORS
DATE: 2005. 03. 15. PART 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. DESCRIPTION / SPECIFICATION
D702 D706 ZD701 ZD702 ZD703 ZD704 ZD711 ZD712
0DS226009AA 0DS226009AA 0DZ560009GB 0DZ560009GB...
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