Gateway FPD1520 Service Manual page 17

4. NO RASTER (OSD IS DISPLAYED) – gmZAN2
NO RASTER
(OSD IS DISPLAYED)
YES
U201
POWER PIN
3.3V?
YES
CHECK
R,G,B INPUT?
U201 PIN 87, 91, 95
YES
CHECK
H-SYNC INPUT
U201 PIN 150?
NO
1. CHECK PC
NO
2. CHECK SIGNAL CABLE
NO
(D-SUB→U701→MICOM
CHECK U802, U806
& D-SUB CONNECTOR
LINE
CHECK H-SYNC LINE
→U201 PIN150)