Abnormal Vertical Scanning - Dell E773c Series Service Manual

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
READJUST V-SIZE FUNCTION VALUE
AND CHECK IC601 PIN1,7
OK
CHECK IC601 PIN5 OUTPUT
2. VERTICAL CENTER
READJUST V-CENTER
6-7 SIDE-PIN CUSHION DISTORTION
READJUST SIDEPIN
6-8 POOR FOCUS
READJUST FOCUS CONTROL
NG
NG
NG
NG
NG
NG
19
CHECK D601, C605
RELATIVE CIRCUIT
CHECK IC401 PIN19,20,21,22,23
RELATIVE CIRCUIT
CHECK IC601 OUTPUT AND CRT
RELATIVE CIRCUIT OR DY
CHECK IC401 AND IC601
RELATIVE CKT
CHECK IC401,Q404,Q405,Q406
RELATIVE CKT
CHECK FOCUS CONTROL UNIT,
FOCUS LEAD WIRE,CTR SOCKET&CTR