Panasonic SA-PT670P, Service Manual

Page: 12 / 17

12
3.4. SMPS Circuit (SA-PT770PN/PX-K)
With reference to original service manual (section 17.6) on page 134 for model no. SA-PT770PN/PX-K
4
5
2
1
P1
B
TO
MAIN CIRCUIT
(H2901*)
IN SCHEMATIC
DIAGRAM - 9
B
TO
MAIN CIRCUIT
(H2900*)
IN SCHEMATIC
DIAGRAM - 9
TO SMPS
SECTION (2/2)
SA-PT770PN/PX SMPS CIRCUIT
2/2 1/2
: +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
H SMPS CIRCUIT
SCHEMATIC DIAGRAM - 14
K7 0
K5 0
50V22
C5798
C5897
INVERTER
ECO CONTROL
0.1
B0EAMM000057
D5896
22
R5798
R5893
39K
0...PN
4.7K...PX
R5895
15K
4
3
1
2
PC5702
B3PBA0000402
SYNC SWITCH
MA2YF8000L
D5730
820K
R5708
330
R5894
SHUNT REGULATOR
4
3
1
2
B3PBA0000402
FEED BACK
PC5799
2.2K
R5890
C5898
0.1
F1BAF1020020
1000P
C5705
0
R5896
R5786
200K
R5891
33K
R5892
C5899
10V1000
9
10
7
8
1
2
3
4
5
6
ETS19AB2A6AG
BACKUP TRANSFORMER
T5751
Q5898
B1ABCF000176
SYNC
100K
R5887
100
R5886
B0BC035A0007
D2901
B0EAMM000057
D2903
Q2900
B1BABK000001
D2906
B0JAME000029 J0JBC0000041
L2916
L2915
J0JBC0000041
C2912
16V100
R2902
SWITCHING TRANSFORMER
PSAVE CONTROL
47
C2902
5600P
L2914
J0JBC0000041
8
9
11
12
10
2
5
6
3
4
1
7
14
13
CN2016
4.7K
R2900
16V33 C2900
47K
R2914 35V33 C2903
D2908
B0EAMM000057
G0C390JA0055
L2910
D2909
MAZ8240GHL
1 2
FP2901
1A
5 3
4
8
7
6 2
1
9
T2900
G4D1A0000117
SYS5V
A
R
3
2
C
1
IC5899
C0DAEMZ00001
D5793
B0HAMP000094
C5790
2200P
D5798
B0EAMM000057
R2910
-7V REGULATOR
POWER CONTROL
1.5
L2902
G0A101ZA0028
R2908
560
R2907
2.7K
16V10 C2909
R2913
0
L2901
G0A220GA0026
E2900
C2908 16V47
Q2903
2SC3940ARA
R2905
39
G0A200D00002
L2911
0.01
C2939
C2955 25V220
C2922
6.3V820 D2952
1 2 3
B0BC010A0007
R2912
2.7K
R2920
3.9K
R2921
390
C2907 1000P
2SB0621AHA
Q2901
B1ADCF000001
Q2902
R2911
1K
1000P C2924 R2919
1K
D2904
B0JCPD000025
4 2 1 3 5
7
8
5
1
2
4
3
IC5799
MIP2F20MSSCF
SWITCHING REGULATOR
D5797
0
470K
R5795
C5795 1000P
0.1
C5796
R5797
15K
DCDET
-13V
C5896
0.1
SYS5V
SYNC
VSS
DC_18V
DC_18V
PCONT
R5866
100K
R5818
100
C5820
6.3V2200
ECO_CTL
R2010 1K
ECO_CTL
6.8K
R5805
B1ABCF000176
Q5863
C5863
4.7
4.7K
R5865
C5870
0.01
22
R5829 R5817
2.2K
0.1
C5818
15K
R5806
0.1
C5810
L2903
G0A101ZA0028
560
R2953
C2905 1000P
C2906
10V100
3.9K
R2952
MOT_+9V
4.7K
R5802...PN
100V0.1
C5817
VDD
4 2 1 3 5
R5814
8.2K
C2930
10V680
B0BC010A0007
D2951
1.2K
R2923
6.8K
R2906
0.01
C2929
C2923
25V220
C2927
0.01
5
6
1
3
4
2
8
7
CN2017
B0JCPD000025
D2913
1K
R2922
150K
R5804
R5803
0
D5725
MAZ8062GML
R5807
330 330
R5809 R5730
1K
A
R
3
2
C
1
C0DABFC00002
IC5801
2.2K
R5808
4
3
1
2
B3PBA0000402
FEED BACK
PC5720
+7V
+7V REGULATOR
+9V
+9V
+9V
AGND
GND OUT INV STBY VCC
NC
ECO_CTL
-7V
DC_DET2
PCONT
+18V.-12V_GND
+18V.-12V_GND
SYS_GND
SYS_GND
SHUNT REGULATOR
AGND
OUT VCC GND INV STBY
+5.3V
+5.3V
+5.3V
F-
F+
F+
F+
GND
GND
-VP
F-
-VP
F-
-VP
SYNC
5.3V
9V
+18V
SYS5VGND
SYS5V
MGND
MGND
MGND
9V
5.3V
FAN GND
AGND
+18V
FB
VCC
S
D
S
FB
VDD
VCC
TR
15K
R5864
C2931
0.47
ADD
SWITCHING REGULATOR
C0DAAMH00012
C0DAAYH00001
IC2903
CHANGE
R2935
4.7K
1M
C0DAAYY00042
C0DAAYG00001
IC2900
CHANGE
R2930
4.7K
1M
SWITCHING REGULATOR
0.1 0.47
CHANGE
C2932