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18
6-6 ABNORMAL VERTICAL SCANNING
1. ABNORMAL VERTICAL SIZE
OK
NG
OK
NG
READJUST V-SIZE FUNCTION VALUE
RELATIVE CIRCUIT
CHECK VERT. OSC CIRCUIT
RELATIVE CIRCUIT
NG
READJUST V-SIZE FUNCTION VALUE
CHECK THE VOLTAGE OF IC101
RELATIVE CIRCUIT
CHECK IC401 PIN 20, 21, 22, 23
CHECK THE IC601 PIN 2 ABOUT 11.8V
PIN 4 ABOUT -12V
CHECK D601, C605
2. VERTICAL CENTER
NG
READJUST V-CENTER
RELATIVE CKT
CHECK IC401 AND IC601
6-7 SIDE-PIN CUSHION DISTORTION
NG
READJUST SIDEPIN
CHECK IC401, Q404, Q405, Q406
RELATIVE CKT.
6-8 POOR FOCUS
READJUST FOCUS CONTROL
NG
CHECK FOCUS CONTROL UNIT,
FOCUS LEAD WIRE, CRT SOCKET & CRT
Содержание P774B-2NT Series
Страница 21: ...20 7 MECHANICAL OF CABINET FRONT DIS ASSEMBLY...
Страница 39: ...38 10 IC BLOCK DIAGRAM IC401 STV9118 IC101 NT6865...
Страница 40: ...39 IC102 24LC08...
Страница 41: ...40 IC601 STV9302A IC801 NT6812K...
Страница 42: ...41 IC802 LM2476 IC901 STR G5643D...
Страница 43: ...42 11 PCB LAYOUT 11 1 MAIN PCB LAYOUT...
Страница 44: ...43 11 2 CRT BOARD LAYOUT...