Tatung VM5ERDA Service Manual page 13

2.ABNORMAL VIDEO LEVEL ON SCREEN
CHECK THE VOLTAGE OF IC801
PIN 2, 16 ABOUT 8V
OK
CHECK THE SIGNAL INPUT OF R.G.B.
ABOUT 0.7Vpp
OK
CHECK IC801 PIN 11 ABOUT 10Vpp
OK
CHECK THE VIDEO OUTPUT OF IC801
PIN 13, 15, 18 ABOUT 3Vpp
OK
R.G.B. APPROACH STANDARD
3. ABNORMAL DDC (PLUG & PLAY)
CHECK IC101 PIN 5 VOLTAGE ABOUT 5V
OK
CHECK SIGNAL CABLE
NG
NG
NG
NG
CHECK 8V RELATIVE CIRCUIT
CHECK SIGNAL CABLE OR
INTERFACE CARD.
CHECK THE RELATIVE CIRCUIT
OF CLAMP.
CHECK IC801
CHECK IC102 GOOD OR FAIL