
17
6-2 ABNORMAL DISPLAY
1.NO SIGNAL ON SCREEN
CHECK FBT RELATIVE CIRCUIT
LESS THAN 400V
OK
NG
NG
OK
OK
NG
OK
NG
CHECK THE OUTPUT VOLTAGE
CHECK THE B+ VOLTAGE OF
CHECK THE VOLTAGE OF CRT
CATHODE ABOUT 40Vpp
CHECK THE VOLTAGE OF FBT SCREEN
CHECK THE RELATIVE CIRCUIT
CHECK THE 12V PIN
OF SMPS ON MAIN PCB
RELATIVE CIRCUIT
OF P802 CONNECTOR
ABOUT 400V TO 700V
EXCEED 700V
CHECK FBT & CRT RELATIVE CIRCUIT
CHECK VIDEO IC801 VCC ABOUT 8V
OF IC801 PIN 13, 15, 18 ABOUT 3Vpp
CHECK THE IC802
OF IC801 PIN 2/PIN 16 Vcc CIRCUIT
OR REFER ITEM 6-1
VIDEO PCB ABOUT 78V
CHECK THE 78V RELATIVE CIRCUIT
CHECK THE VOLTAGE OF FBT
SCREEN ABOUT 450V TO 650V
LESS THAN 450V
Содержание S761U
Страница 1: ...SERVICE MANUAL COLOR MONITOR SPECTRUM 7V SERIES S761U V 41AS761 E11 ...
Страница 22: ...7 MECHANICAL OF CABINET FRONT DIS ASSEMBLY ...
Страница 25: ...LOCATION CMS761U2N SPECIFICATION ...
Страница 26: ...LOCATION CMS761U2N SPECIFICATION LOCATION CMS761U2N SPECIFICATION ...
Страница 27: ... PARTS LIST OF MAIN PC BOARD LOCATION AMS761U SPECIFICATION LOCATION AMS761U SPECIFICATION ...
Страница 28: ......
Страница 29: ...LOCATION AMS761U SPECIFICATION LOCATION AMS761U SPECIFICATION ...
Страница 30: ...LOCATION AMS761U SPECIFICATION ...
Страница 31: ...LOCATION AMS761U SPECIFICATION ...
Страница 32: ...LOCATION AMS761U SPECIFICATION ...
Страница 33: ......
Страница 34: ...LOCATION AMS761U SPECIFICATION ...
Страница 35: ...LOCATION AMS761U SPECIFICATION LOCATION AMS761U SPECIFICATION ...
Страница 36: ...LOCATION AMS761U SPECIFICATION ...
Страница 37: ...LOCATION AMS761U SPECIFICATION ...
Страница 38: ......
Страница 39: ...LOCATION AMS761U SPECIFICATION PARTS LIST OF CRT PC BOARD LOCATION CRS761U SPECIFICATION ARS761U CRT BOARD ...
Страница 40: ...PARTS LIST OF CRT AUTO INS PC BOARD LOCATION ARS761U SPECIFICATION LOCATION ARS761U SPECIFICATION ...
Страница 41: ......
Страница 42: ...LOCATION ARS761U SPECIFICATION ...
Страница 50: ......