17
6-3 NO BLANKING
NG
OK
CHECK THE RELATIVE
CIRCUIT OF BLANKING
CHECK THE RELATIVE CIRCUIT
CHECK R879,D706,D863,C873 ON VIDEO
PCB,CHECK G1 RELATIVE CIRCUIT
FBT PIN 4 ON MAIN PCB
OF Q705
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
CHECK Q402, T401
CHECK T401, T402, Q402, Q403, D408,
ABOUT 10Vpp
OF Q403 ABOUT 1200Vpp AT FH:31KHz
C418, C419, H-DY, B+,Q406,C401,D406
CHECK IC401 PIN 26 WAVE FORM
CHECK IC401 PIN 4~6, PIN 13
CHECK IC401 PIN 29 ABOUT 12 VDC
CHECK IC401 PIN 29 RELATIVE
CIRCUIT
OF Q402 ABOUT 20Vpp
Summary of Contents for E773c Series
Page 16: ...16 6 2 ABNORMAL DISPLAY 1 NO SIGNAL ON SCREEN ...
Page 21: ...21 7 MECHANICAL OF CABINET FRONT DIS ASSEMBLY ...
Page 38: ...38 9 BLOCK DIAGRAM IC801 NT6812K ...
Page 39: ...39 9 1 BLOCK DIAGRAM SMPS ...
Page 41: ...41 ...
Page 42: ...42 IC801 NT6812KG ...
Page 43: ...43 ...
Page 44: ...44 IC901 STR G5643D 1 2 3 4 5 D S GND VCC OCP FB ...
Page 45: ...45 11 PCB LAYOUT ...
Page 46: ...46 ...
Page 47: ... 47 12 CHEMATIC DIAGRA ...
Page 48: ...48 ...
Page 49: ...49 ...
Page 50: ...50 ...