Centrum Sirius 100, Service Manual

Page: 24 / 95

1-9-5 H97A8BLP
Power Supply Block Diagram
AC1001
F1001 T1.6AL/250V
LINE
FILTER L1003
D001 - D004
BRIDGE
RECTIFIER
2 4
Q1001
Q1003
Q1008
Q1004
7 8
1 2
3 4 IC1001
ERROR VOLTAGE DET
T0011
MAIN CBA
POWER SUPPLY CBA
HOT CIRCUIT. BE CAREFUL.
20 19 18 17 16 15 14 13 12 11
1
EV+1.2V
2
EV+1.2V
3
EV+3.3V
4
EV+3.3V
5
EV+3.3V
7
P
-ON+5V
8
EV+11V
9
EV+11V
6
P
-ON+3.3V
17
PWRCON
C-POW-SW P-ON+5V P-ON-H P-DOWN-L P-ON+44V AL-30V AL+12V TIMER+5V AL+9V AL+5V AL+20.5V/+12V
Q053,Q054
SW+44V
Q1053, Q1054
SW+12V
Q055
SW+9V
Q056
SW+5V
Q051,Q052
SW+20.5V
P-ON+15V F2 F1 DVD P-ON+12V
Q057
CL051A
C
L051B
CN051
1
AL+44V
1
3
AL+12V
3
5
AL+5V(P-DO
WN)
5
6
AL+5V
6
8
AL+20.5V
8
CL052A
C
L052B
1
A
L-30V
3
A
L+2.8V
5
A
L+4V
9
F1
8
1 3 5 9 8
F2
<FROM PIN 67 OF IC501> <TO PIN 86 OF IC501> <FROM PIN 66 OF IC501>
CAUTION FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE ONLY WITH THE SAME TYPE T1.6AL/250V FUSE.
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.
IC1003 +3.3V REG. IC1002 +1.2V REG.
JUNCTION CBA
CN051A
1 3 5 6 8
1 3 5 6 8
10 12 14 18 17
10 12 14 18 17
-FL EV+3.3V DVD P-ON+3.3V DVD P-ON+5V
Q1055
CL1051
SW+5V
Q1052
SW+3.3V
Q058
Q059
SW+5V
HOT
COLD