IBM 9493-AW1, Service Manual

Page: 15 / 41

- 15 -
2. NO RASTER (OSD IS NOT DISPLAYED) – INVERTER
CHECK MICOM INV
ON/OFF PORT.
J2 PIN5
5V?
NO
NO RASTER
(OSD IS NOT DISPLAYED)
1. CHECK ADAPTER
2. CHECK U12 J4 PIN10
24V?
NO
1.CONFIRM BRIGHTNESS
OSD CONTRL STATE.
2.CHECK MICOM DIM-ADJ
PORT
J2 PIN1
5V?
NO
REPLACE
INVERTER ASS’Y
CHECK
PULSE AS
CONTACTING SCOPE
PROBE TO CAUTION LABEL.
(CONTACT PROBE TO
CAUTION LABEL.
CAN YOU SEE PULSE
AT YOUR
SCOPE?
NO
REPLACE CCFL LAMP
IN THE LCD MODULE
YES
YES
YES
YES