Eastern Digital Co V700P, Руководство по обслуживанию

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6-6 ABNORMAL VERTICAL SCANNING
1. ABNORMAL VERTICAL SIZE
OK
NG
OK
NG
READJUST V-SIZE FUNCTION VALUE
READJUST V-SIZE FUNCTION VALUE
CHECK VERT. AMP CIRCUIT IC501
RELATIVE CIRCUIT
CHECK THE VOLTAGE OF IC301
NG
RELATIVE CIRCUIT
CHECK THE IC601 ABOUT 11.8V PIN 2
CHECK D501, R509 RELATIVE CIRCUIT
CHECK IC601 PIN 21, 22, 23
2. VERTICAL CENTER
READJUST V-CENTER FUNCTION VALUE
NG
CHECK IC601 & IC501 RELATIVE CKT