Emerson SC319C Service Manual page 34

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.
HOT CIRCUIT. BE CAREFUL.
4A/125V
F601 L601
4A/125V
LINE
W601
FILTER
CN601
PS601
DG601
DEGAUSSING
COIL
Q601
SWITCHING
Q602
LIMITER
1-8 -11
4A/125V
HOT COLD
D603 - D606 T601
BRIDGE
5
RECTIFIER
4
2
1
IC601
ERROR
VOLTAGE DET
4 1
3 2
CAUTION
FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,
REPLACE ONLY WITH THE SAME TYPE FUSE.
ATTENTION : POUR UNE PROTECTION CONTINUE LES RISQES
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."
16
15
IC602
14 +5V REG.
Q608
+5V REG.
Q611
+5V REG.
13
Q610
+8V REG.
12
11
VR601
Q604 Q605
+B ADJ.
FEED
BACK
NOTE :
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.
Q609
+5V REG.
Q612
Q606
Q607
IC301
P-ON-ON
+5.7V
49 44
REGULATOR
MAIN CBA
1-8-12
+B
DEF+B
AL+33V
TIMER+5V
P-ON+5V
P-ON+5V
P-ON+5V
AL+12V
P-ON+8V
AL+5V
AL+12V
P-SAFETY2
(TO PIN3 OF IC201)
P-DOWN
(TO PIN84 OF IC201)
P-ON-H
(FROM PIN31 OF IC201)
T7300BLP