Emerson EWR20V4, Service Manual

Page: 34 / 91

1-10-10 E9400BLP
Power Supply Block Diagram
A V
AC1001
F1001
1A 250V
LINE FILTER
L1001
D1001 - D1004
BRIDGE RECTIFIER
2 4
Q1001
Q1003
Q1008
8 7
3 4
IC010
ERROR VOLTAGE DET
HOT
T001
Q055
Q052
POWER SUPPLY CBA
MAIN CBA
JUNCTION CBA
F
HOT CIRCUIT. BE CAREFUL.
20 19 18 17 16 15 14 13 12 11
1-4
VI+2.5V
6-8
P-ON+2.5V
10-12
P-ON+3.3V
15
D
VD-P-ON+5V
11
AL+44V
22
AL+12V(1)
33
AL+12V(2)
44
D
VD+5V
55
AL+5V
11
AL-30V
33
AL+2.5V
66
AL+3.3V
77
F1
88
F2
99
EV+5V
CN202
CN1607 CN1610
CN1609
CN1608
CN1608
CN1611
NOTE : The voltage for parts in hot circuit is measured using hot GND as a common terminal.
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."
A V
F
TO DVD BE MAIN CBA UNIT CN6
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.
1 2
11
8
AL+44V
21
7
AL+12V(1)
31
6
AL+12V(2)
41
5
D
VD+5V
51
4
AL+5V
10
9
AL-30V
12
7
AL+2.5V
15
4
AL+3.3V
16
3
F1
17
2
F2
18
1
EV+5V
1
FAN+9.5V
2
GND
CN1606 CN1604
T
O
D
V
D FE
MAIN CBA UNIT CN5801
T
O
SER
V
O
/
SYSTEM CONTR
O
L
BLOCK DIA
G
RAM
P-ON-L
EV+33V AL+18V AL+12V P-ON+9V P-ON+5V AL+5V AL-30V -FL F1 F2 EV+5V
PWSW
PO
W
-SW
T
O
SUB
SYSTEM CONTR
O
L
BLOCK DIA
G
RAM
FAN
1
P-ON+10V
2
GND
3
GND
4
P-ON+5V
Q056
IC203
+2.5V REG.
IC202
+3.3V REG.
Q1006
Q1005
Q1604
Q031
REG-CONT