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ViewSonic Corporation E90fB-4
18
Confidential-Do Not Copy
6-1-2. 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
6-1-3. ABNORMAL DDC (PLUG & PLAY)
OK
NG
CHECK IC101 PIN 16 VOLTAGE ABOUT 5V
CHECK SIGNAL CABLE
CHECK IC902 GOOD OR FAIL
OR H802 PIN 2, 4 DATA OUTPUT
Содержание PerfectFlat E90fB-4
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Страница 48: ...ViewSonic Corporation E90fB 4 45 Confidential Do Not Copy SAA4849...
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Страница 58: ...ViewSonic Corporation E90fB 4 55 Confidential Do Not Copy 11 PCB LAYOUT 11 1 MAIN PCB LAYOUT...
Страница 59: ...ViewSonic Corporation E90fB 4 56 Confidential Do Not Copy 11 2 CRT BOARD LAYOUT...