Sylvania SRT2232S Service Manual page 26

Power Supply Block Diagram
CAUTION !
Fixed voltage power supply circuit is used in this unit.
If Main Fuse (F601) is blown, check to see that all components in the power supply
circuit are not defective before you connect the AC plug to the AC power supply.
Otherwise it may cause some components in the power supply circuit to fail.
4A/125V
F601 L601
4A/125V
LINE
FILTER
AC601
AC CORD
CN691
DG691
DEGAUSSING
COIL
PS691
Q601
SWITCHING
HOT
T601
D605 - D608
BRIDGE
6
RECTIFIER
4
2
Q602
LIMITER 1
4
IC601
ERROR
VOLTAGE DET
3
RL601
6-9
CAUTION
FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,
REPLACE ONLY WITH THE SAME TYPE FUSE.
ATTENTION : POUR UNE PROTECTION CONTINUE LES RISQES
4A/125V
D'INCELE N'UTILISER QUE DES FUSIBLE DE MEMO TYPE.
RISK OF FIRE-REPLACE FUSE AS MARKED.
"This symbol means fast operating fuse."
"Ce symbole reprèsente un fusible à fusion rapide."
COLD
9
Q672
10 SWITCHING
11
Q673
SWITCHING
CONTROL
12
14
13
1
2 Q652
FEED
BACK
DG-ON
Q696
(FROM PIN56 OF IC333)
(SWITCHING)
NOTE :
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.
TP601
+B
Q141
+5V
REGULATOR
Q681
+8V
SWITCHING
Q682
+5V
SWITCHING
Q683
+5V
SWITCHING
VR661
+B ADJ Q691
Q674
SWITCHING
P-ON-ON
Q695
MAIN CBA
6-10
DEF +B
PROTECT1
(TO PIN5 OF IC333)
PROTECT2
(TO PIN6 OF IC333)
+B
AL+33V
P-ON+5V
AL+12V
P-ON+8V
+8V CTRL
(FROM PIN19 OF IC333)
P-ON+5V
+5V CTRL
(FROM PIN47 OF IC333)
P-ON+5V
P-ON-H
(FROM PIN65 OF IC333)
L6250BLP