Acer 41AS551V AC511 Service Manual - Page 18
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6-6 ABNORMAL VERTICAL SCANNING
1. ABNORMAL VERTICAL SIZE
READJUST V-SIZE FUNCTION VALUE
CHECK THE IC601 PIN 2 ABOUT 11.8V
PIN 4 ABOUT -12V
NG
OK
CHECK VERT. OSC CIRCUIT
NG
OK
READJUST V-SIZE FUNCTION VALUE
2. VERTICAL CENTER
READJUST V-CENTER
NG
6-7 SIDE-PIN CUSHION DISTORTION
READJUST SIDEPIN
CHECK D601, C605
RELATIVE CIRCUIT
CHECK THE VOLTAGE OF IC101
RELATIVE CIRCUIT
NG
CHECK IC401 PIN 20, 21, 22, 23
RELATIVE CIRCUIT
CHECK IC401 AND IC601
RELATIVE CKT
NG
CHECK IC401, Q404, Q405, Q406
RELATIVE CKT.
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