NEC MultiSync 2A Service Manual page 26

Color monitor
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6. H-F/V CONVERTER AN D ASSOCIATE D CIRCUITRY
CHECK H. SYNC
CHECK THE POINT S2-3
NG
OK
CHECK TP502 VOLTAGE
NG
OK
OK
CHECK THE IC552
OUTPUT
IC552
1 PIN
7 PIN
NG
OK
FAILURE
MEASURE THE VOLT
SIGNAL CONDITION:
NG
READJUST
MEASURE THE VOLTAGES
ON THE SUB PWB PWE-24
VGA
800X600
H
L
L
H
IC552 FAILURE
-24-
AGE ON THE SUB PWB PWE-243A
SEE ALIGNMENT PROCEDURE
IC 551, C554, C555 FAILURE
3A

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