Panasonic SA-AK270EB / SA-AK270EG Service Manual ▷ View online
18.9. (K) SMPS Circuit
1
2
3
4
SA-AK270EB/EG SMPS CIRCUIT
1/2
2/2
TO
D-AMP CIRCUIT
(CN5500)
IN SCHEMATIC
DIAGRAM - 12
TO
MAIN CIRCUIT
(CN2701*)
IN SCHEMATIC
DIAGRAM - 5
TO SMPS
SECTION (2/2)
5
SCHEMATIC DIAGRAM - 13
SMPS CIRCUIT
: +B SIGNAL LINE
: -B SIGNAL LINE
A
B
C
D
E
F
G
H
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
W5805
0
0
R5725
3
1
2
B0HBSM000043
D5801
R5834 2.2K
3
2
1
ZJ5801
2.2K
R5832
+30V_SENSE
FAN_18V
10K
R5863
DCDET
10K
3K
R5862
FAN_18V
C5823
0.1
-30V_SENSE
10K
R5864
DCDET
UNR221400L
QR5801
-30V_SENSE
R5801
10K
D5807
D5809
+30V_SENSE
R5800
12K
R5860
10K
0.1
C5831
0.1
C5832
5
6
1
3
4
2
8
7
7
H5801*
2SA207700L
Q5860
C5800
0.01
C5826 0.01
Q5862
R5861
Q5861 - Q5862
Q5861
B1ABCF000176
R5702
100K
R5703
100K
35V2200
C5805
B0HFRJ000012
D5803
35V2200
C5808
22
R5720
D5731
B0EAMM000057
3
2
1
D5702
B0ZAZ0000052
C5713 0.01
3 2 1
ZJ5803
C5700
F1BAF1020020
1000P
T5701
ETS42BN1A6AD
MAIN TRANSFORMER
C5821
0.01
C5819
0.01
C5822
0.01
C5820
0.01
25V470
C5824
SYNC
SYS6V
2.2K
R5805
15K
R5806
A
R
3
2
C
1
C0DABFC00002
SHUNT REGULATOR
FEEDBACK CONTROL
FEED BACK
INVERTER
CURRENT
LIMITING SWITCH
CURRENT
LIMITING SWITCH
FEED BACK
IC5801
0.1
C5818
-13V
DCDET
0.1
C5815
C5812
0.1
DC_18V
0
R5803
47K
R5804
0.1
C5810
2.7K
R5802
C5896
0.1
6
8
9
7
2
1
1
4
5
3
10
11
CN5802
PCONT
B1GBCFLL0037
QR5810
330
R5809
330
R5807
1K
R5730
B0BC6R100010
D5725
2.2K
R5808
4
3
1
2
B3PBA0000402
PC5720
R5817 330
R5810 330
4
3
1
2
B3PBA0000402
PC5701
1.5K
R5811
0.1
C5825
1.5K
R5816
8.2K
R5812
MAZ80750ML
D5806
SYS6V
-30V_SENSE
+30V_SENSE
2.7K
R5815
24K
R5813
Q5802
B1ABCF000176
120
R5724
DC_18V
3
1
2
B0HBSM000043
D5802
-13V
FAN_18V
25V470
C5816
B0EAMM000057
D5805
D5804
B0EAMM000057
11
13
14
12
10
8
6
5
7
9
18
15
16
17
1
4
3
2
C5813
35V470
R5722
1K
C5722
1000P
220P
C5721
R5729
10K
C5728
1000P
R5728
100K
D5724
D5727
MA2J11100L
MA2J11100L
R5732
100
R5726
82M
B1ABCF000176
Q5722
10K
R5721
D5722
B0BC019A0007
MA2J11100L
D5723
C5720
0.1
B0EAMM000057
D5729
D5721
MAZ81800ML
D5726
B0EAKM000117
SWITCH
R5723
1K
2SA207700L
Q5721
MA2J11100L
D5728
2SC3940ARA
Q5720
Q5720
Q5722
C5737
470P
C5726
0.1
C5730
50V1
C5724
D5732
B0BC035A0007
50V56
R5733 47K
R5731
0
C5725
0.1
C5723 470P
+30V_SENSE
PCONT
DC18V
AM_BP
-13V
DCDET
DC18V
+18V.-12V_GND
+18V.-12V_GND
+18V.-12V_GND
GND
GND
-30V_SENSE
FAN_GND
FAN_18V
-30V_SENSE
SYS6V
SYNC
SYS_GND
+30V_SENSE
R5750
0
TRANSFORMER TEMP DETECT
TRANSFORMER
TEMP DETECT
DC DETECT
C5869
0.1
TH5860
D4CC11040013
PCONT
8.2K
R5814
100V0.22
C5817
VIN
VCC
DRAIN
+30V
-30V
+FAN 18V
GND
GND
+18V
AMPGND
-12V
AM_BP
Q5803
2SC3940ARA
SWITCH
AM_BP
R5825
1K
91
R5820
91
R5824
91
R5822
91
R5821
91
R5823
MA2J11100L
MA2J11100L
W5801
0
W5806
0
W5804
0
W5803
0
R5841
120K
R5840
100K
6
B1GDCFGA0018
QR5802
DC DETECT
0.01
C5801
C5802 0.01
0.01
C5804
0.01
C5803
C5811 0.01
0.01
C5814
C5827
0.01
IC5701
C5HACYY00003
SWITCHING REGULATOR
2
3
1 D
S
GND
FB
VCC
OLP/SS
OCP/BD
4
5
7
6
K1
0
K2
0
SA-AK270EB / SA-AK270EG
93
1
4
2
3
5
1/2
2/2
SA-AK270EB/EG SMPS CIRCUIT
TO SMPS
SECTION (1/2)
SCHEMATIC DIAGRAM - 14
SMPS CIRCUIT
: +B SIGNAL LINE
15
16
17
18
19
20
21
22
23
24
25
26
27
28
15
16
17
18
19
20
21
22
23
24
25
26
27
28
A
B
D
E
F
H
G
C
SYS6V
C5712
400V180
1000V47P
C5797
R5795
43K
D5797
MA2J72800L
22P
C5794
R5787 75K
2.2K
R5796
50V2.2
C5791
0.1
C5796
2200P
C5795
R5797
4.7K
C5703
F0C2H1040001
0.1
3
2
1
4
B0FBAR000041
D5701
39K
R5893
SYNC
C5899 16V220
D5730
MA2J11100L
D5798
B0HAMP000094
390K
R5704
390K
R5705
R5798
10
C5798
50V56
4
3
1
2
PC5702
B3PBA0000402
4
3
1
2
B3PBA0000402
PC5799
100
R5897
Q5898
IC5899
C0DAEMZ00001
B1ABCF000176
R5896
100K
C5897
0.1
2.2K
R5890
1K
R5894
B0EAMM000057
D5896
B0HAMP000094
D5793
C5790
2200P
R5891
33K
200K
R5786
9
10
7
8
1
6
ETS19AB256AG
BACKUP TRANSFORMER
T5751
4.7K
R5892
100
R5895
0.1
C5898
A
R
3
2
C
1
INVERTER
SYNC SWITCH
FEED BACK
5
4
2
3
SHUNT REGULATOR
TH5701
D4CAC8R00002
BLK
RED
TO
AC INLET CIRCUIT
IN SCHEMATIC
DIAGRAM -9
6
7
5
2
4
3
8
1
FB
S
S
D
NC
VDD
CL
VCC
IC5799
MIP4110MSSCF
SWITCHING REGULATOR
SA-AK270EB / SA-AK270EG
94
19 Printed Circuit Board
Note: Circuit board diagrams may be modified at any time with the development of new technology.
SA-AK270EB / SA-AK270EG
95
19.1. (A) CD Servo P.C.B. & (I) USB P.C.B.
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
G
H
10
11
12
13
CD SERVO P.C.B. (REPV0111A)
A
SA-AK270EB/EG
CD SERVO / USB P.C.B.
USB P.C.B. (REPV0101C)
I
(SIDE A)
(SIDE B)
01
01
1
1
1A-1
1A-1
M
M
B
C
E
PbF
PbF
PbF
C7232
C7334
C7614
C7601
C7203
C7231
C7228
C7227
X7201
CN7001
C7223
C7235
M7302*
(SPDLE MOTOR)
CN7002
S7201
(REST SW)
M7301*
(TRV MOTOR)
C7225
R7218
C7226
R7217
R7601
C7613
C7335
R7327
Q7601
C7218
W7026
R7650
IC7002
R7329
W7027
R7220
D7650
W7025
R7253
R7214
C7263
C7166
TP2
TP18
TP19
TP13
TP10
TP37
TP39
TP36
TP38
TP90
(RF)
TP51
TP50
C7241
C7233
TP11
IC7001
R7335
R7325
C7315
R7315
R7323
C7338
R7331
C7352
R7328
R7330
R7339
C7216
C7161
C7244
R721
1
C7217
C7204
W7012
W7015
W7013
W7014
C7102
C7142
C7107
C7234
W701
1
C7155
C7154
W7021
TP89
W7016
W7017
W7022
W7018
W7019
W7020
C7626
C7164
C7165
W7024
W7023
R7111
C7264
R7336
C7339
R7349
R7332
W7002
W7009
W7004
W7003
W7001
C7243
C7670
TP3
TP31
TP12
TP7 TP8
TP9
TP16
W7028
W7010
R7254
W7008
C7253
W7006
W7029
TP1
TP88
TP86
TP87
(VREF)
TP28
W7007
TP4
TP17
TP14
TP24
R7221
R7212
C7230
W7005
LB7263
LB7262
LB7264
IC900
L900
IC951
0101C
0101C
C915
C906
X900
C953
P903
C904
C931
P901
0101C-1
0101C-1
USB
LB930
LB852
R955
C952
R954
LB952
R972
C913
LB932
LB933
LB934
LB935
LB840
LB843
LB841
LB936
LB938
C903
R914
LB845
LB846
LB848
R903
LB850
C901
C902
C905 C907
R901
C908
R904
R902
R971
C914
R952
R953
LB951
R951
R957
R950
C951
R906
C912 C911
R958
* FOR INDICATION ONLY
1
2
3
1
2
1
2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
1
5
10
15
20
25
26
30
35
40
45
50
51
55
60
65
70
75
76
80
85
90
95
100
1
5
29
10
14
28
15
20
30
25
1
4
8
5
1
5
10
1516
17
20
25
30
32
33
35
40
45
48
49
50
55
60
64
1
2
21
22
5
10
15
20
3
7
9
11
13
17
19
18
16
14
12
8
6
4
6
5
4
3
2
1
SA-AK270EB / SA-AK270EG
96
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