Smps Circuit - Panasonic SA-PT170PH Service Manual

17.6. SMPS Circuit

1 2 3
SCHEMATIC DIAGRAM - 13
A
G SMPS CIRCUIT
CN2016
F+ 1
F- 2
-VP
3
GND
B 4
TO
GND
5
B MAIN CIRCUIT
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
ECO_PT170 8
G
K2 0
H
1 2 3
4 5 6
: +B SIGNAL LINE : -B SIGNAL LINE
R2910
1.5
R2935
1M
IC2903
R2911 C0DAAMH00012
1K
SWITCHING REGULATOR
5 4 3 2 1
L2902
G0A101ZA0028
+5.3V
R2921 R2920
3.9K
390
G0A200D00002
AGND
IC2900
3 2 1
C0DAAYG00042
SWITCHING REGULATOR
E2900
5 4 3 2 1
MOT_+9V
L2903
G0A101ZA0028
+9V C2932
R2923
R2906
1.2K 6.8K
D2913
B0JCPD000025
4 5 6
7 8 9
+9V
F+
F-
-VP
AGND
+5.3V D2909
MAZ82400HL B0EAMM000057
MOT_+9V
+9V
MGND
VDD
SYS_GND L2914
J0JBC0000041
SYS5V -VP
SYNC
D2903
B0EAMM000057
MGND
L2915
-13V
J0JBC0000041
+5.3V
F-
L2916 D2906
J0JBC0000041
B0JAME000029
F+
+18V.-12V_GND
VDD
L2911
R2913
SYNC
0
+18V
Q5898
B1ABCF000176
INVERTER
R5886
100
R2930
1M
Q5861
B1ABCF000176
R5862
4.7K ECO CONTROL
ECO_PT170
ECO_CTL
R5865
4.7K
Q5863
B1ABCF000176
GND
SYS5V ECO CONTROL
DCDET C
1
PCONT
ECO_CTL
3
ECO_PT170
A
2
R
IC5899
C0DAEMZ00001
SHUNT REGULATOR
SYS_GND
7 8 9
111
10 11 12
G0C390JA0055
D2908
R2900 C2900
4.7K
16V33
T2900
G4D1A0000117
SWITCHING TRANSFORMER
4 Q2900
5 3
B1BABK000001
PSAVE CONTROL
6 2
7 1
8 9
C2902
R2902
47 5600P
PC5720
B3PBA0000402
R5809 R5807 FEED BACK R5730
1K
330 330
1 4
PC5702
2 3
B3PBA0000402
D5725
SYNC SWITCH
MAZ80620ML
4 1
3 2
C
1
IC5801
R5806
15K
C0DABFC00002
3
A
C5818 SHUNT REGULATOR
0.1
2
R
R5818
2200
R5805 R5819 PC5799
2200 B3PBA0000402
2200
R5894 FEED BACK
C5828
330
6V470
1 4
2 3
R5829
2200
R5817
T5751
C5820
0
ETS19AB2A6AG
6V470
BACKUP TRANSFORMER
R5798 D5798
22 B0EAMM000057
6
7 5
8
4
3
9
R5786
200K
10 2
C5790
222K
1
D5793
B0HAMP000094
C5706
F1BAF1020020
1000P
1/2 2/2
SA-PT170PH/PR
10 11 12
13 14
P1
FP2901
L2910
1A
1 2
TO SMPS
SECTION (2/2)
FB
VCC
1
2
D5730
MA2YF8000L
C5798
50V22
IC5799
MIP2F20MSSCF
SWITCHING REGULATOR
5 D VCC 4
TR 3
7 S FB 2
8 S VDD 1
R5797
15K
4
5
SMPS CIRCUIT
13 14