Hitachi DV-P543U, Service Manual

Page: 49 / 50

B-4
B-4 Power Supply Block Diagram
IC1006
(SHUNT REGULATOR)
REG
AC1001 AC CORD
F1001 1A 250V
LINE
FILTER
L1001
D1001, D1002 D1004, D1005
Q1003
Q1031
2 4 7
3 4
IC1001 ERROR VOLTAGE DET T1001
11 12 13 15 14 16 17 18
SWITCHING
SWITCHING
CONTROL
1 2
6
BRIDGE
RECTIFIER
HO
T
A V
F
HOT CIRCUIT. BE CAREFUL.
D1003 RECTIFIER D1030 RECTIFIER D1016 RECTIFIER
Q1016
Q1005
Q1011
Q1015
Q1002
CN1001
Q1004
-FL EV+5V F1 P-ON+10V EV+3.3V P-ON+5V P-ON+3.3V
1,2
EV+1.2V
3,4,5
EV+3.3V
8,9
EV+11V
7
P-ON+5V
6
P-ON+3.3V
17
PWRCON
+1.2V
REG.
IC1002
D1006
SCHOTTKY BARRIER SCHOTTKY BARRIER
D1008
F2
NOTE :
The voltage for parts in hot circuit is measured using hot GND as a common terminal.
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.
A
V CB
A
T
O CN401
Q1008
LATCH
"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 même type. Risk of fire
-replace fuse as marked.
"This symbol means fast operating fuse."
A V
F