Acer AC511 SERIES Panduan Servis - Halaman 18

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Acer AC511 SERIES Panduan Servis

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
OK
CHECK VERT. OSC CIRCUIT
OK
READJUST V-SIZE FUNCTION VALUE
2. VERTICAL CENTER
READJUST V-CENTER
READJUST SIDEPIN
NG
NG
NG
NG
CHECK IC401 AND IC601
RELATIVE CKT

6-7 SIDE-PIN CUSHION DISTORTION

NG
17
CHECK D601, C605
RELATIVE CIRCUIT
CHECK THE VOLTAGE OF IC101
RELATIVE CIRCUIT
CHECK IC401 PIN 20, 21, 22, 23
RELATIVE CIRCUIT
CHECK IC401, Q404, Q405, Q406
RELATIVE CKT.