Power Supply - Panasonic SA-PT70EB Service Manual

14.8. Power Supply

IC5799
MIP2F20MSSCF
SWITCHING POWER
SUPLLY CONTROL
TR 3
VCC 4
S 7
SD 8
D 5
FB 2
VDD 1
P5701
AC INLET
L5701 L5702
F1 TH5702
4 3 4 3
1 2 1 2
DZ5701
IC5701
C0DAAMH00015
SWITCHING
REGULATOR
D 1
D5729
VCC 4
D5727 D5724
OCP/BD 7
FB 6
GND 3
T5751
SUB
TRANSFORMER
D5896
7
D5798
6
10
5
2
3
PC5799
FEED BACK
3 2
4 1
PC5702
SYNC SWITCH
1 4
2 3
D5799
RY5701
2 4
1 3
D5701
T5701
MAIN
TRANSFORMER
4
6 14
D5802
+25V
7 15
8
Q5720
CURRENT
2 13
LIMITING
SWITCH
1 12
PC5720
FEED BACK
4 1
3 2
HOT COLD
IC5899
C0DAEMZ00001
SHUNT
REGULATOR
C
1
R
2
3
Q5898
INVERTER
Q5899
SWITCH
IC2900
C0DBAYH00005 T2900
SWITCHING SWITCHING
REGULATOR TRANSFORMER
FP2901
1 VIN VOUT 2 2 1 1 8
Q2900
3
POWER SAVE
9
CONTROL
D2901
D2908
D2903
5
D2909
Q5841
DC DETECT
Q5863
FEED BACK
CIRCUIT
IC5801
C0DAEMZ00001
SHUNT
REGULATOR
87
SMPS P.C.B
SYS5V H2016* CN103 SYS6V
1
5 5
TO POWER SUPPLY
SECTION (1/2)
H2016* CN103 TO
SYNC
6 6 SYSTEM CONTROL
H2016* CN103 FROM
PCONT
10 10 SYSTEM CONTROL
H2016* CN103
12V 12V
2
8 8
FL2 H2016* CN103 FL-
3
13 13
FL1 H2016* CN103 FL+
4
12 12
-26V H2016* CN103 -VP
5
15 15
DCDET H2016* CN103
DC DET1
6
9 9
VDD H2016* CN103 VDD
7
1,2 1,2
H2016* CN103 FROM
ECO CTL
14 14 SYSTEM CONTROL
MAIN/D-AMP P.C.B
SA-PT70EB/EG/EP POWER SUPPLY(1/2) BLOCK DIAGRAM