Panasonic SA-AK770PL Service Manual page 107

18.10. (N) SMPS Circuit
1 2 3
SCHEMATIC DIAGRAM - 17
A
SMPS CIRCUIT
: +B SIGNAL LINE
B
H5801* DCDET
+30V_SENSE
+30V_SENSE 8
FAN_18V
+30V_SENSE 7
TO
D-AMP CIRCUIT GND 6
GND 5
(CN5500)
C5832
-30V_SENSE 4
IN SCHEMATIC
0.1
-30V_SENSE
C DIAGRAM - 16 -30V_SENSE 3
FAN_GND 2
FAN_18V
FAN_18V 1
-30V_SENSE
+30V_SENSE
D
CN5802 DCDET
AM_BP
AM_BP 11
PCONT
PCONT 10 DC_18V
DC18V 9
AM_BP
DC_18V
TO
DC18V 8
C5812 R5825
MAIN CIRCUIT
+18V.-12V_GND 7 0.1
E
1K
(ZJ2701)
+18V.-12V_GND 6 Q5803
C5815
IN SCHEMATIC 0.1 -13V
2SC3940ARA
-13V 5
DIAGRAM - 5 W5801 0
DCDET 4 SWITCH
DCDET
SYS_GND 3
-13V
C5896 0.1 SYS6V
SYS6V 2
SYNC
SYNC 1 FAN_18V
F
+30V_SENSE
K5
0 ...PL
G
K7
0 ...GCP
-30V_SENSE
SYS6V
PCONT
H
1 2 3
4 5 6 7
: -B SIGNAL LINE
D5809
Q5861 - Q5862
MA2J11100L
B1ABCF000176
TRANSFORMER TEMP DETECT
D5801
B0HBSM000043
R5862 R5863
10K 10K
Q5862
Q5860 R5860 Q5861
10K
2SA207700L
1 2 3
TRANSFORMER
C5870
C5869
TEMP DETECT 0.1
R5864
0.1
10K
R5800
12K
R5801
10K
QR5801
C5800
1
UNR221400L
R5841 R5840 0.01
3 2 1
2
120K 82K
DC DETECT
D5807 3
MA2J11100L
ZJ5801
QR5802
B1GDCFGA0018 D5802
B0HBSM000043
DC DETECT
C5816
25V470
R5809 R5807
330 330
W5804 0 W5803 0
W5805 0
IC5801
C0DABFC00002
SHUNT REGULATOR
1
3
Q5802
2 B1ABCF000176
FEEDBACK CONTROL
D5806
MAZ80750ML
4 5 6 7
8 9 10
TH5860
D4CC11040013
T5701
ETS48AB116AC...GCP
ETS48AB12GAC...PL
MAIN TRANSFORMER
10
9 R5703 R5702
100K...GCP 100K...GCP
-30V 33K...PL 33K...PL
DRAIN
11 8
AMPGND
12 7
13 6
1
14
5
+30V
15
4
+FAN 18V VIN
GND
16
3
+18V VCC
17 2
D5803
R5720
B0HFRJ000012
22
18 1
-12V
C5813
35V470
R5723
D5721 1K
B0BC010A0007...GCP
MAZ81800ML...PL
Q5720
2SC3940ARA
Q5720
CURRENT
LIMITING SWITCH
D5805
B0EAMM000057
R5721 D5728
MA2J11100L
10K
Q5722
Q5722
B1ABCF000176
C5720
CURRENT
0.1
LIMITING SWITCH
R5730
D5722
1K
B0BC019A0007
D5725
B0BC6R100010
PC5720
B3PBA0000402
C5728
1000P
1 4
2 3
FEED BACK
R5728
100K
PC5701
B3PBA0000402
1 4
2 3
FEED BACK
QR5810
B1GBCFLL0037
INVERTER
8 9 10
107
11 12 13
3
TO SMPS
SECTION (2/2)
2
R5732
D5726 100
B0EAKM000117
IC5701
C5HACYY00003...GCP
D5729
C5HACYY00004...PL
B0EAMM000057
SWITCHING REGULATOR
R5722
1K...GCP 7 OCP/BD
1.2K...PL
6 FB
D5724
D5727
MA2J11100L MA2J11100L
5 OLP/SS
R5725 C5730
50V1
0
4 VCC
3 GND
2 S
C5721
C5737 C5727
C5722
220P
470P 3300
1000P
1 D
FOR GCP ONLY FOR PL ONLY
R5726 82M
R5727 0.1
C5700
FOR PL ONLY
F1BAF1020020
1000P
R5750
R5729
0
10K
3 2 1
ZJ5803
SA-AK770PL/GCP SMPS CIRCUIT
1/2 2/2
11 12 13
SA-AK770PL / SA-AK770GCP
14
1
2
3
4
5
6
7
14