
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6.2 ABNORMAL DISPLAY
NO SIGNAL ON SCREEN
EXCEED 700V
CHECK VIDEO IC801 VCC ABOUT
5V
CHECK THE 5V PIN OF P802
CONNECTOR
CHECK THE RELATIVE CIRCUIT
OF IC801 PIN23 CIRCUIT
NG
OK
CHECK THE OUTPUT VOLTAGE
OF IC801 PIN19/20/21 ABOUT 3Vpp
CHECK THE VIDEO 80V OF IC802
PIN4 ABOUT 77V
CHECK THE 80V RELATIVE
CIRCUIT OF SMPS ON MAIN PCB
NG
OK
NG
OK
CHECK THE VOLTAGE OF CRT
CATHODE ABOUT 40Vpp
NG
OK
CHECK THE IC802 RELATIVE
CIRCUIT
CHECK THE IC803 PIN6, 7,8 VOLTAGE
ABOUT 50VDC RELATIVE CIRCUIT
CHECK THE VOLTAGE OF FBT
SCREEN ABOUT 400V TO 700V
NG
OK
CHECK THE IC803 RELATIVE
CIRCUIT
CHECK FBT RELATIVE CIRCUIT
LESS THAN 400V
CHECK FBT&CRT RELATIVE
CIRCUIT OR REFER ITEM6-1
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Содержание 105G7
Страница 23: ...22 7 MECHANICAL OF CABINET FRONT DIS ASSEMBLY http jdwxzlw 5d6d com fromuser 华盛维修 家电维修资料网 免费下载各种维修资料 ...
Страница 42: ...41 9 2 IC BLOCK DIAGRAM IC101 NT68F65 IC102 24C08 http jdwxzlw 5d6d com fromuser 华盛维修 家电维修资料网 免费下载各种维修资料 ...
Страница 44: ...43 IC401 TDA4841 IC601 TDA4863A http jdwxzlw 5d6d com fromuser 华盛维修 家电维修资料网 免费下载各种维修资料 ...
Страница 45: ...44 IC801 LM1237 http jdwxzlw 5d6d com fromuser 华盛维修 家电维修资料网 免费下载各种维修资料 ...
Страница 46: ...45 IC802 LM2469 IC803 LM2480NA http jdwxzlw 5d6d com fromuser 华盛维修 家电维修资料网 免费下载各种维修资料 ...
Страница 47: ...46 10 PCB LAYOUT 10 1 MAIN PCB LAYOUT http jdwxzlw 5d6d com fromuser 华盛维修 家电维修资料网 免费下载各种维修资料 ...
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Страница 49: ...48 11 SCHEMATIC DIAGRAM http jdwxzlw 5d6d com fromuser 华盛维修 家电维修资料网 免费下载各种维修资料 ...
Страница 50: ...49 http jdwxzlw 5d6d com fromuser 华盛维修 家电维修资料网 免费下载各种维修资料 ...
Страница 51: ...50 http jdwxzlw 5d6d com fromuser 华盛维修 家电维修资料网 免费下载各种维修资料 ...
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