LG Flatron W1946S

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Copyright 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
2. NO RASTER (OSD IS NOT DISPLAYED) – LIPS
CHECK U501 INVERTER
ON/OFF PORT
P605 PIN9 3.3V?
NO RASTER
(OSD IS NOT DISPLAYED)
CHECK POWER BOARD
(LIPS)
CHECK P605
VOLTAGE PIN5,6
(5V)?
NO
NO
NO
NO
1. CONFIRM BRIGHTNESS
OSD CONTRL STATUS
2. CHECK MICOM DIM-ADJ
PORT
CHECK P605
PIN10
POWER BOARD (LIPS)
CHECK
PULSE AS
CONTACTING PROBE
TO THE LAMP
WIRE OF THE
LCD MODULE
REPLACE LCD MODULE
YES
1
2
3
4
YES
YES
YES
Waveforms
1
P605-#5,6
2
P605-#9
3
P605-#10 (Brightness 100)
5
LAMP CURRENT
3
P605-#10 (Brightness 0)