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NO RASTER
(OSD IS NOT DISPLAYED)
1
J707
PIN5, PIN 6
5V?
J707 PIN2
2.5V?
J707 PIN1
5V?
CHECK
PULSE AS
CONTACTING SCOPE
PROBE TO CAUTION LABEL.
(CONTACT PROBE TO
CAUTION LABEL.
CAN YOU SEE PULSE
AT YOUR
SCOPE?
REPLACE CCFL LAMP
IN THE LCD MODULE
Waveforms
1
J707-#5, 6 / U801-#1/U803-#3
2. NO RASTER (OSD IS NOT DISPLAYED) – LIPS
YES
YES
YES
YES
3
J707-#2
Inverter Off
Micom Port check
J705 Inverter output
NO
NO
1. CONFIRM BRIGHTNESS
NO
2. CHECK MICOM DIM-ADJ
NO
4
J707-#2
Inverter On
Micom Port check
J705 Inverter output
13
CHECK LIPS
CHECK MICOM INV
ON/OFF PORT.
(U501 PIN9)
OSD CONTRL STATE.
PORT(U501 PIN41)
LIPS
3
4
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