Tatung VM5ERDA, Руководство по обслуживанию

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15
6-3 NO BLANKING
NG
OK
CHECK THE RELATIVE
CIRCUIT OF BLANKING
CHECK G1 RELATIVE CIRCUIT
FBT PIN 5 ON MAIN PCB
CHECK THE RELATIVE CIRCUIT
OF Q601 & Q707 ON MAIN PCB
CHECK C836, R859 ON VIDEO PCB,
6-4 HOR./OSC/DEF/HV CIRCUIT FAULT
1. NO RASTER (DISCONNECT WITH SIGNAL CABLE)
NG
OK
OK
OK
NG
NG
NG
CHECK THE COLLECTOR VOLTAGE
CHECK THE COLLECTOR VOLTAGE
RELATIVE CIRCUIT
RELATIVE CIRCUIT
OF Q402 ABOUT 30Vpp
CHECK Q402, T401
CHECK T401, T402, Q402, Q403,
OF Q403 ABOUT 1250Vpp AT FH:31KHz
D408, C418, C419, H-DY, B+
CHECK IC401 PIN 4 ~ 7, PIN 13
CHECK IC401 PIN 29 ABOUT 11.5 VDC
CHECK IC401 PIN 26 WAVE
FORM ABOUT 11.5Vpp
CHECK IC401 PIN 29 RELATIVE CIRCUIT