LG Flatron 206WTQ Service Manual page 17

NO RASTER
(OSD IS NOT DISPLAYED)
CHECK J905
1
VOLTAGE PIN5,6
2
J905 PIN9 3.3V?
3 CHECK J905
PIN10
CHECK
PULSE AS
CONTACTING PROBE
4
TO THE LAMP
WIRE OF THE
LCD MODULE
REPLACE LCD MODULE
Copyright 2007LG Electronics. Inc. All right reserved.
Only for training and service purposes
2. NO RASTER (OSD IS NOT DISPLAYED) – LIPS
(5V)?
YES
YES
YES
YES
3
J905-#10 (Brightness 100)
NO
NO
NO
NO
1
J905-#5,6
3
J905-#10 (Brightness 0)
- 17 -
CHECK POWER BOARD
(LIPS)
CHECK U501 INVERTER
ON/OFF PORT
1. CONFIRM BRIGHTNESS
OSD CONTRL STATUS
2. CHECK MICOM DIM-ADJ
PORT
POWER BOARD (LIPS)
Waveforms
2
J905-#9
5
LAMP CURRENT
LGE Internal Use Only