LG FLATRON N1642W-PF.ATR Service Manual page 15

NO RASTER
(OSD IS NOT DISPLAYED)
CONTACTING SCOPE
PROBE TO CAUTION LABEL.
(CONTACT PROBE TO
CAUTION LABEL.
CAN YOU SEE PULSE
REPLACE CCFL LAMP
IN THE LCD MODULE
Copyright 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
2. NO RASTER (OSD IS NOT DISPLAYED) – LIPS
P204
PIN5, PIN6
5V?
YES
P204 PIN9
5V?
YES
P204 PIN10
5V?
YES
CHECK
PULSE AS
AT YOUR
SCOPE?
YES
NO
NO
NO
NO
- 15 -
CHECK POWER BOARD,
AND FIND OUT A SHORT
POINT AS OPENING EACH
POWER LINE
CHECK MICOM INV
ON/OFF PORT.
1. CONFIRM BRIGHTNESS
OSD CONTRL STATE.
2. CHECK MICOM DIM-ADJ
PORT
LIPS
LGE Internal Use Only