Smps Circuit - Panasonic SA-AKX74PH Service Manual

16.9. SMPS Circuit

1 2 3
SCHEMATIC DIAGRAM - 22
A
M SMPS CIRCUIT
CN5801
L
+35V_SENSE 6
TO
+35V_SENSE 5
D-AMP CIRCUIT
SYS_GND 4
(ZJ5901*)
SYS_GND 3
IN SCHEMATIC
-35V_SENSE 2
B DIAGRAM - 21
-35V_SENSE 1
R5701
100K...PH
CN5802
2.2K...PN
SMPS_ID 15
PCONT
PCONT 14
PW_DC+16V
DC16V 13
C
+16V_GND 12
ECO_CTL
ECO_CTL
11
B
TO DCDET2 10
TEMP_DET
MAIN(MICON) TEMP_DET 9
PW_SYS3.3V
CIRCUIT (CN2007) SYS3.3V 8
SYNC
IN SCHEMATIC SYNC 7
DIAGRAM - 7 +35V_SENSE
6
+35V_SENSE 5
C5831 C5896
OUTP_GND 4
0.1 0.1
OUTP_GND 3
C5832
-35V_SENSE 2
0.1
-35V_SENSE 1
D
TH5861
D4CCY1040001
E
TEMP_DET
C5900
10
F
R5898
10K
G
NOTE: " * " REF IS FOR INDICATION ONLY
H
1 2 3
4 5 6
: +B SIGNAL LINE : -B SIGNAL LINE
Q5862
R5862 R5863
B1GBCFJJ0051
18K 18K
DC DETECT
R5860 R5861
10K 1.8K
Q5860 Q5861
B1ADCF000001 B1ABCF000176
C5869
R5864
TEMPERATURE DETECT TEMPERATURE DETECT 0.1
10K
C5870
0.1
R5800 R5841 R5836 R5833
15K 120K 2.2K 2.2K
R5840 C5843 R5837 R5835
82K 2.2K
10 2.2K
R5801
C5844
22K
10
QR5801
B1GBCFJN0038
D5804 QR5802
SWITCH
B0ACCK000012
B1GDCFGA0018
DC DETECT
PW_DC+16V
C5826 C5800
0.01 0.01
CHASSIS GND
C5817
100V0.1
R5814
8.2K
Q5899 R5866
22
QR5812
B1ABGC000001
B1GDCFJJ0047
SHUNT REGULATOR
R5805
CONTROL
SWITCH
3.3K
R5868
R5867 C5871 C5872 R5865
22K
100K 0.01 6.3V2200 390
PW_SYS3.3V
QR5811
ECO_CTL
B1GBCFJJ0051
SWITCH
PCONT
4 5 6
7 8 9
10
-37V
11
12
GND
13
14
+37V
15
D5801
GND
B0ABSM000008 16
TH5860
D4CCY1040001
17
+16.8V
T5701
1 2 3 18
G4DYZ0000051...PH
G4DYZ0000060...PN
MAIN TRANSFORMER
R5702
100K...PH
10 9
33K...PN
C5805 11 8
R5832
50V2200
2.2K
12 7
13 6
C5808
R5834
50V2200
2.2K
14 5
15 4
HEATSINK*
16 3
3 2 1 R5720
22
G1 G2
17 2
D5731
B0EAMM000057
18 1
D5803
D5802
B0HFRJ000012
B0ABSM000008
B0BC010A0007...PH
B0BC01700015...PN
C5812 C5813
25V220
0.1
B1BABG000007
VOLTAGE REGULATOR
PC5720
B3PBA0000579
FEEDBACK
R5809 R5807
330 330 R5721
10K
1 4
R5808
2.2K
R5802 C5810
2 3
10K 0.1
C5720
0.1
IC5801
R5803
C0DAZYY00039 R5730
10K
1K
SHUNT REGULATOR
R5804
82K
K
D5722
R5806
B0BC019A0007
15K
A
C5818 D5723
0.1
B0ACCK000012
R
PC5701
B3PBA0000579
FEEDBACK
1 4
R5817 R5810
330 330
2 3
QR5810
B1GBCFLL0037
PCONT SWITCH
7 8 9
104
10 11 12
FOR PH FOR PN
10
9 9
-37V
8 11 8
7 12 7
GND
13
6 6
14
5 5
VIN
+37V
4 15 4
VIN
VIN
GND
3 16 3
VCC VCC
17
2 2
+16.8V
18
1 1
GND GND
R5703
C5713
100K...PH
0.01
33K...PN
HEATSINK*
3
D5702
B0ZAZ0000089
G1 G2
1 2
R5724
D5726
120
B0EAKM000117
R5723
1K
D5721
L5704
J0JBC0000019
Q5720
D5729
B0EAMM000057
Q5722
R5722
D5727
1.2K
B1ABCF000176 B0ACCK000012
CURRENT
LIMITING SWITCH
D5724
B0ACCK000012
D5728
B0ACCK000012
C5725 C5723
0.1 470P
C5728
1000P
R5733
47K
C5721 C5722
220P 1000P
C5727...PN
C5737...PH
D5725
820P 3300P
B0BC6R100010
1/2 2/2
SA-AKX74PH/PN SMPS CIRCUIT
10 11 12
13 14
P1
1
TO SMPS
CIRCUIT (2/2)
2
3
R5732
100
IC5701
C5HACYY00004...PN
C5HACYY00005...PH
SWITCHING REGULATOR
7 OCP/BD
6
FB
5 OLP/SS
C5730
1
4 VCC
C5726
0.1
3 GND
2 S
1 D
4
R5726
0.1
R5727
0.1
FOR PN
13 14