Smps Circuit - Panasonic SA-PT464P Service Manual

17.6. SMPS Circuit

1 2 3
SCHEMATIC DIAGRAM - 14
A
F
SMPS CIRCUIT
CN2016
F+ 1
F-
2
-VP
3
GND
B 4
TO
GND 5
MAIN CIRCUIT
B
5.3V 6
(H2901*)
5.3V
7
IN SCHEMATIC
MOTOR_+9V 8
DIAGRAM - 9
TUNER_+9V 9
MGND 10
+18V 11
SYS5VGND
12
SYS5V
13
SYNC 14
Q2901
2SB0621AHA
-7V REGULATOR
C
Q2902
B1ADCF000001
POWER CONTROL
D
E
Q2903
2SC3940ARA
+7V REGULATOR
CN2017
F
+7V
1
B
AGND 2
TO
AGND
3
MAIN CIRCUIT
-7V 4
(H2900*)
DC_DET2 5
IN SCHEMATIC
R2010 1K
PCONT 6
DIAGRAM - 9
ECO_CTL
7
NC 8
G
K1 0
K6 0
H
1 2 3
4 5 6
: +B SIGNAL LINE : -B SIGNAL LINE
R2910
1.5
IC2903
R2911 C0DAAMH00012
1K
SWITCHING REGULATOR
5 4 3 2 1
L2902
G0A101ZA0028
+5.3V
R2921 R2920
390 3.9K
G0A200D00002
AGND
IC2900
3 2 1
C0DAAYY00042
SWITCHING REGULATOR
E2900
5 4 3 2 1
MOT_+9V
L2903
G0A101ZA0028
+9V
C2932 0.1
R2923
R2906
1.2K 6.8K
D2913
B0JCPD000025
R5864
15K
4 5 6
7 8 9
+9V
F+
F-
-VP
+5.3V D2909
MAZ82400HL
+9V
MGND
DC_18V
SYS_GND L2914
J0JBC0000041
SYS5V -VP
SYNC
D2903
B0EAMM000057
MGND
L2915
-13V
J0JBC0000041
+5.3V
F-
L2916
R2935
J0JBC0000041
B0JAME000029
4.7K
F+
+18V.-12V_GND
FB
VCC
FAN GND
VDD
L2911
+18V
DC_18V
SYNC
R2913
Q5898
0
B1ABCF000176
INVERTER
R5886
100
R2930
4.7K
ECO_CTL
R5865
4.7K
VSS
Q5863
B1ABCF000176
ECO CONTROL
+18V.-12V_GND
SYS5V
DCDET C
1
PCONT
ECO_CTL
3
A
2
R
IC5899
C0DAEMZ00001
SHUNT REGULATOR
SYS_GND
7 8 9
124
10 11 12
D2908
B0EAMM000057
T2900
G4D1A0000117
SWITCHING TRANSFORMER
4 Q2900
5 3
B1BABK000001
PSAVE CONTROL
6 2
7 1
8 9
R2902 C2902
D2906 5600P
47
PC5720
B3PBA0000402
R5809 R5807 FEED BACK R5730
1K
330 330
1 4
PC5702
2 3
B3PBA0000402
SYNC SWITCH
D5725
MAZ80620ML
4
3
C
1
IC5801
R5806
15K
C0DABFC00002
3
C5818 A SHUNT REGULATOR
0.1
2
R
PC5799
B3PBA0000402
R5894 FEED BACK
330
1 4
R5817
R5829
22 2.2K
2 3
R5818
100
T5751
C5820
ETS19AB2A6AG
6.3V2200
BACKUP TRANSFORMER
R5798 D5798
22 B0EAMM000057
6
D5896
B0EAMM000057
7 5
8
4
9 3
R5786
200K
10 2
C5790
2200P
1
D5793
B0HAMP000094
C5705
F1BAF1020020
1000P
1/2
10 11 12
13 14
P1
FP2901
L2910 1A
G0C390JA0055
1 2
TO SMPS
SECTION (2/2)
1
1
2 2
D5730
MA2YF8000L
C5798
50V22
IC5799
MIP2F20MSSCF
SWITCHING REGULATOR
5 D VCC 4
TR 3
C5795
1000P
7 S FB 2
8 S VDD 1
R5797
15K
4
5
2/2
SA-PT464P SMPS CIRCUIT
13 14