Philips 107B7 User Manual

Page 29

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17” CDT Color Monitor 107B7

29

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 10, 18 ABOUT 5V

CHECK 5V RELATIVE CIRCUIT

CHECK THE IC801 PIN 23

RELATIVE CIRCUIT

RELATIVE CIRCUIT

CHECK IC801 PIN 23 CLAMP PULSE

PIN 19, 20, 21 ABOUT 4Vpp,

CHECK IC801 PIN19/PIN20/PIN21

3. Abnormal DDC (Plug & Play)

OK

NG

CHECK IC101 PIN 5 VOLTAGE ABOUT 5V

CHECK SIGNAL CABLE

CHECK IC902 GOOD OR FAIL

OR H802 PIN 2, 4 DATA OUTPUT