IBM 9493-AW1 Service Manual page 15

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