LG L1915S Service Guide - Page 16

No Raster Osd Is Not Displayed - Mst9111b

Get LG L1915S - LG - 19inch LCD Monitor PDF manuals and user guides View all LG L1915S manuals
Add to My Manuals
Save this manual to your list of manuals

Page 16 highlights

3. NO RASTER (OSD IS NOT DISPLAYED) - MST9111B NO RASTER (OSD IS NOT DISPLAYED) U201 POWER PIN 8,114 3.3V? YES U201 PIN122, 123 OSCILLATE AS 12MHZ? YES NO CHECK U801 1. CHECK PIN122, 123 NO SOLDERING CONDITION 2. CHECK X501 3. TROUBLE IN U201 U501 PIN43 IS 64KHz H-SYNC? PIN44 IS 60Hz V-SYNC? IS PULSE APPEARED AT SIGNAL PINS? AT MODE 12? YES TROUBLE IN CABLE OR LCD MODULE NO CHECK CONNECTION LINE FROM D-SUB TO U501 - 14 -

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
- 14 -
3. NO RASTER (OSD IS NOT DISPLAYED) – MST9111B
1. CHECK PIN122, 123
SOLDERING CONDITION
2. CHECK X501
3.
TROUBLE IN U201
U201
POWER PIN 8,114
3.3V?
NO
CHECK U801
U201
PIN122, 123
OSCILLATE AS
12MHZ?
CHECK CONNECTION LINE
FROM D-SUB TO U501
TROUBLE IN CABLE
OR LCD MODULE
YES
YES
YES
NO RASTER
(OSD IS NOT DISPLAYED)
U501
PIN43 IS 64KHz H-SYNC?
PIN44 IS 60Hz V-SYNC?
IS PULSE APPEARED
AT SIGNAL PINS?
AT MODE 12?
NO
NO