13
2.ABNORMAL VIDEO LEVEL ON SCREEN
OK
NG
OK
NG
NG
OK
OK
CHECK THE VOLTAGE OF IC801
CHECK THE SIGNAL INPUT OF R.G.B.
ABOUT 0.7Vpp
CHECK THE VIDEO OUTPUT OF IC801
R.G.B. APPROACH STANDARD
CHECK SIGNAL CABLE OR
INTERFACE CARD.
CONTRAST SET MAX.
PIN 2, 16 ABOUT 8V
CHECK 8V RELATIVE CIRCUIT
CHECK THE IC801 PIN 11
RELATIVE CIRCUIT
RELATIVE CIRCUIT
CHECK IC801 PIN 11 CLAMP PULSE
PIN 13, 15, 18 ABOUT 4Vpp,
CHECK IC801 PIN 3/PIN 5/PIN 8 & PIN 10
3. ABNORMAL DDC (PLUG & PLAY)
OK
NG
CHECK IC101 PIN 5 VOLTAGE ABOUT 5V
CHECK SIGNAL CABLE
CHECK Q921 GOOD OR FAIL
OR H802 PIN 2, 3 DATA OUTPUT