Power Supply Block Diagram - Hitachi DV-PF73U Service Manual

6-5 Power Supply Block Diagram

NOTE :
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.
HOT CIRCUIT. BE CAREFUL.
F
A V
F1001
L1001 D1001 - D1004
AC1001
1A 250V
LINE BRIDGE
RECTIFIER
FILTER
Q1008
HOT
POWER SUPPLY CBA
28
CAUTION
FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,
F
REPLACE ONLY WITH THE SAME TYPE FUSE.
A V
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."
T001
2 20
19
4 18
17
Q1001
16
15
Q1003
14
8 13
12
7 11
IC1001
ERROR
VOLTAGE DET
4 1
3 2
IC1006
REG
(SHUNT REGULATOR)
CAUTION !
Fixed voltage ( or Auto voltage selectable ) power supply circuit is used in this unit.
If Main Fuse (F001) 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.
CL1002 CL1004 CN1005 CN1003
1 AL+44V 1 1 1
2 P-DOWN-L 2 2 2
3 AL+12V 3 3 3
5 AL+5V 5 5 5
7 AL-24V 7 7 7
CL1006 CL1007 CN1005 CN1003
1 AL+2.35V 1 9 9
3 AL+4V 3 11 11
6 F1 6 14 14
7 F2 7 15 15
JUNCTION
CBA
Q055
Q057
Q052
Q056
Q1006
Q1005 Q1011
IC1004
+3.3V REG.
IC1002 CN1001
+1.5V REG.
1 EV+1.5V
2 EV+1.5V
3 EV+1.5V
4 EV+3.3V
Q1004 5 EV+3.3V
13 DVD-P-ON+5V
14 EV+9V
15 EV+9V
17 DVD-P-ON+3.3V
19 PWRCON
MAIN CBA
AL+15V
AL+33V
P-DOWN-L
AL+12V
P-ON+9V
AL+5V
TIMER+5V
AL-24V
P-ON-L
P-ON+5V
F2
-FL
F1
EV+3.3V
DVD-P-ON+12V
DVD-P-ON+3.3V
DVD-P-ON+5V
TO DVD MAIN
CBA UNIT
CN401