Table of Contents
Advertisement
3. NO RASTER (OSD IS NOT DISPLAYED) – gmzanl
NO RASTER
(OSD IS NOT DISPLAYED)
U3
POWER PINS
3.3V?
YES
U3 PIN141, 142
OSCILLATE AS 14.3M?
YES
U9
PIN31 IS 65MHz CLOCK?
PIN27 IS 48KHz H-SYNC?
PIN28 IS 60Hz V-SYNC?
IS PULSE APPEARED
AT SIGNAL PINS?
YES
J5 PIN1
3.3V?
YES
TROUBLE IN CABLE
OR LCD MODULE
NO
NO
NO
NO
- 15 -
CHECK U2, U24
1. CHECK PIN141, 142
SOLDERING CONDITION
2. CHECK X2
3. TROUBLE IN U3
CHECK U9'S SOLDERING
CONDITION AND
CHECK CONNECTION LINE
FROM U3 TO J5
CHECK U12, U30
Advertisement
Table of Contents
