Scan Driven Supply - Toshiba 1997 G Series Troubleshooting Manual

8. Scan driven supply

The flyback transformer develops a scan driven supply
(T461), shown in Fig. 11. The Flyback supplies 200V
for video output from pin 3, 27V for vertical output from
pin 6, -27V for side DPC from pin 5, and 12V from pin
7. The 12V line produces a regulated 5V and 9V line.
The 5V supplies the tuner and PIP, the 9V supplies the
Video Processing. Resistors and fuses are in each line
for circuit protection
- 2 7V
+12V
5V
Q101
C422
9V
C421 Q421
R642
C461
C449
C422
+27V
C310
F301
200V
+B
Fig. 11 Other power supply circuit
AFC
BLANKING
10
FAIL SAFE
HEATER 9
5
D460
4
D408
7
C317
R327 R333
6
D302
R433
D406
3
2
C448
1
Q404
Collector
12
FBT
ANODE
FOCUS
SCREEN
8
ABL