Deflection Circuit Troubleshooting Routine; Horizontal Deflection Circuit; Ec Eceessenneneeecereaseeeeeeneseeeaeanaenereennaees - CTX 1565D Troubleshooting Manual

1565D
6.5.1 Horizontal Deflection Circuit
CHECK Q701,D702,FBT
CHECK Q701 ,Q702,T701,
Q206,Q207,R703,R701,
C731
CHECK 1C201 OR IT'S
PERIPHERAL SUCH AS
R230,R231,C204,C206
C207,C219,C221
OK
No Raster
START
6.0 TROUBLESHOOTING
FOR DC TO DC CONTROL LOOP
CHECK PIN 2 VOLTAGEF
OF FBT(DISCONNECT
COLLECTOR OF Q401
WHEN MEASURED
CHECK CATHOD
VOLTAGE OF D407
OK
IS THE OUTPUT
VOLTAGE OF D109
CHECK BASE |
36VDC
VOLTAGE OF Q701
NG
| POWER SUPPLY
TROUBLESHOOTING
ROUTING
CHECK PIN 12
VOLTAGE OF IC201
CHECK PIN 1 H-SYNC.
INPUT OF [C201
NG
CHECK Q511,Q505
R564,C201
CHECK PIN 38 OF IC501
CHECK ICSO1 OR ITS
PERIPHERAL PARTS
CHECK PIN 40 OF 1C501
CHECK
P503,P602,P601 AND
SIGNAL CABLE
CHECK D407 &
RELATED TRACE TO
FBT |
CHECK I1C401,Q401 &
THEIR PERIPHRAL |
COMPONENTS
CTX
15