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18.2.3. SMPS CIRCUIT (1/2)
1
2
3
SCHEMATIC DIAGRAM - 17
A
I
SMPS CIRCUIT
B
C
D
C5812
0.1
CN5802
C5815
+20V
1
0.1
E
-20V
2
H
AMPGND
3
TO
AGND
4
D-AMP CIRCUIT
+7V
5
(JW5802*)
-7V
6
IN SCHEMATIC
WL_GND
7
DIAGRAM - 16
WL_5V
8
DC DET
9
PCONT
10
F
G
H
1
2
3
4
5
6
: +B SIGNAL LINE
: -B SIGNAL LINE
D5733
B0BC035A0007
D5808
MA2J1110GL
R5865
22K
Q5862
D5801
B1ABCF000176
B0HDRM000002
DC DETECT
1
2
3
SYSGND
R5862
1.5K
SYS5V
1
2
3
DC DET
ZA722*
PCONT
G1
G2
D5802
B0HBSM000054
IC5801
C0DAEMZ00001
SHUNT REGULATOR
C
1
R5806
15K
3
A
C5818
0.1
2
R
4
5
6
7
8
9
T5701
ETS28BH166AC
MAIN TRANSFORMER
-22V
12
1
+22V
2
11
GND
10
3
VIN
GND
R5720
D5731
9
22
B0EAMM000057
8
5
+7V
7
6
VCC
-7V
Q5722
B1ABCF000176
CURRENT LIMITING SWITCH
C5851
C5852
C5728
16V220
16V220
1000P
PC5720
B3PBA0000402
FEEDBACK
R5809
R5807
R5730
330
330
1K
1
4
2
3
R5808
D5725
2.2K
B0BC6R100010
7
8
9
165
10
11
12
D5721
B0BC019A0007
Q5720
2SC3940ARA
R5722
D5724
D5727
CURRENT LIMITING SWITCH
2.2K
MA2J1110GL
MA2J1110GL
C0DAAMH00015
SWITCHING REGULATOR
R5725
2.2K
D5729
D5728
B0EAMM000057
MA2J1110GL
D5722
B0BC019A0007
D5723
MA2J1110GL
1/2
2/2
SC-ZT2EE/GS(SB-ZT2EE/GS) SMPS CIRCUIT
10
11
12
13
14
TO SMPS
SECTION (2/2)
P1
1
2
ZA721*
G1
G2
IC5701
OCP/BD
7
6
FB
OLP/SS
5
VCC
4
GND
S
3
1
D
C5747
470P
R5726
0.33
3
13
14
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Troubleshooting
