LG FLATRON W1952S Service Manual page 15

NO RASTER
(OSD IS NOT DISPLAYED)
CHECK J703
1
VOLTAGE PIN5,6
2
P704 PIN9 3.3V?
3 CHECK J703
PIN10
CHECK
PULSE AS
CONTACTING PROBE
4
TO THE LAMP
WIRE OF THE
LCD MODULE
REPLACE LCD MODULE
Copyright 2007 LG 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
J703-#10 (Brightness 100)
NO
NO
NO
NO
1
J703-#5,6
3
J703-#10 (Brightness 0)
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CHECK POWER BOARD
(LIPS)
CHECK U201 INVERTER
ON/OFF PORT
1. CONFIRM BRIGHTNESS
OSD CONTRL STATUS
2. CHECK MICOM DIM-ADJ
PORT
POWER BOARD (LIPS)
Waveforms
2
J703-#9
5
LAMP CURRENT
LGE Internal Use Only