Sylvania DP170SL8, Service Manual

Page: 21 / 45

1-8-4 E6E22BLP
Power Supply Block Diagram
IC1006
(SHUNT REGULATOR)
AC1001 AC CORD
F1001
LINE
FILTER
L1001
D1001, D1002 D1004, D1005
Q1003
2 4 6
3 4
IC1001 ERROR VOLTAGE DET T1001
11 12 13 15 14 16 17 18
SWITCHING
SWITCHING
CONTROL
1 2
7
BRIDGE
RECTIFIER
HO
T
HOT CIRCUIT. BE CAREFUL.
D1003
RECTIFIER D1009 RECTIFIER D1016 RECTIFIER
Q1016
Q1005
Q1011
Q1002
CN1001
-FL EV+5V F1 P-ON+9V EV+3.3V P-ON+5V
4,5
EV+1.2V
6,7,8
EV+3.3V
11,12
EV+10V
10
P-ON+5V
9
P-ON+3.3V
20
PWRCON
SCHOTTKY BARRIER
D1030
F2
A
V
CB
A
T
O
CN401
Q1031
1A 250V
A V
F
REG
3
1
2
Q1008
LATCH
SCHOTTKY BARRIER
D1008
SW+10V
Q1004
SW+5V
SW+3.3V
SWITCHING
SWITCHING
IC1002
+1.2V REG.
Q1015
SWITCHING
Q1006,Q1007
SWITCHING
CAUTION ! Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. If Main Fuse (F1001) 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.
NOTE: The voltage for parts in hot circuit is measured using hot GND as a common terminal.
"Ce symbole reprèsente un fusible à fusion rapide."
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 m
ê
me type.
Risk of fire
-replace fuse as marked.
"This symbol means fast operating fuse."
A V
F