7.0 TROUBLESHOOTING1995VLX/VL2X/BLX
7.5 DEFLECTION CIRCUIT TROUBLESHOOTING ROUTINE
7.5.1 Horizontal Deflection Circuit
No Raster
START
NGOK
CHECK GATE OF
CHECK PIN 2CHECK Q401,D401
Q402
VOLTAGE OF FBT
(DISCONNECT PIN1
OF FBT AND
NG
DRAIN OF Q402
CHECK VOLTAGE
OF Q407~Q410
OK
NG
NG
CHECK R472, R375,NGCHECK PIN2CHECK PIN4,7,9REPLACE IC401,
R302, C311VOLTAGE OF IC301VOLTAGE OF IC402IC402,ZD402
OK
CHECK PIN15NG
CHECK IC501,P501
H-SYNC. INPUT OF
OR SIGNAL CABLE
IC301
OK
CHECK PIN8
VOLTAGE OF IC301
NG
REPLACE IC301
END
20CTX |