Horizontal Deflection Circuit; Eee Eeeeetetettenees; Cece Ccceccsceeeeseeeeeeaeeeseesesserenecsenseeaeensees; Idan Ancatalsl Tame Neniee - CTX 1451C/CLR Troubleshooting Manual

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6.5.1 Horizontal Deflection Circuit
No Raster
START
FOR DC TO DC CONTROL LOOP
CHECK PIN 1 VOLTAGE OF
FBT(DISCONNECT
COLLECTOR OF Q401 WHEN
MEASURED)
CHECK D501 &
RELATED TRACE TO
FBT
CHECK DRAIN
VOLTAGE OF Q501
OK
CHECK
DOES THE OUTPUT | ox
CHECK
Q406,R404,R423,T402,
C401,R401,C402,R441
POWER SUPPLY
CHECK PIN 12
TROUBLESHOOTING
| VOLTAGE OF 1C201 ROUTING
2k Sees |
CHECK PIN 1 H-SYNC.
INPUT OF 1C201
CHECK 1C201 OR ITS
PERIPHERALSUCH AS
€203,C208,C204
OK
CHECK R201,C201 &
1C201
CHECK PIN 5 OF 1C301
| NG
CHECK 1C301 OR ITS
PERIPHERAL PARTS
CHECK PIN 3 OF IC301
CHECK
P301,P602,P601 AND
SIGNAL CABLE
_ G