Block Diagram For Supply Voltage System - Changhong Electric 21NF55 Service Manual

2. BLOCK DIAGRAM FOR SUPPLY VOLT-AGE SYSTEM
Bridge Rectifying
Filter
VD803~VD806
C802,C807
Line Filter
L801,C801,
C802
150-250V~,50/60Hz
SERVICE MANUAL
+115V
VD891
Power Regulat ion
and Control Circuit
STR-G5653/F6654
Fig .6 Block Diagram for EX-1A1 Supply Voltage System
VD491
VD451
FBT VD461
T400
VD471
VD871 +15-S
To N600
Switch
Transformer
VD881 +15V-H
T804
Feedback Circuit
N801
Error Signal
15
+190V
To CRT RGB PCB
+45V
To A100,N401
+16V
To N401
+8V
N442
+5V-2
N441
Regulator
V115
To H Out
+5V-1
+3.3V
Regulator
V871,
VD882
To A100,
N100,
N650
To A100
EEPROM
R/C Input
To N100
Keyboard