Power, Power Button & Ac Inlet Circuit - Panasonic SA-PT480PH Service Manual

17.5. Power, Power Button & AC Inlet Circuit
1 2 3
SCHEMATIC DIAGRAM - 21
A
E
POWER CIRCUIT
B
D
CN2916
TO G2
SMPS CIRCUIT
DC12V 3
(CN5802)
GND 2
C
IN SCHEMATIC DC18V 1
DIAGRAM - 19
G1
D
CN2917
TO G2
SMPS CIRCUIT DC5V 3
2
(CN5803) GND
IN SCHEMATIC GND 1
DIAGRAM - 19 G1
D
J0JHC0000107
E
J0JHC0000107
C2982 C2975
10 10
F
F
POWER BUTTON CIRCUIT
S6801
G B
H6803 POWER
TO
L6806 0
FL CIRCUIT DGND 1
L6804 0
KEY1_BTN 2
(CN6001)
L6805 0
IN SCHEMATIC LED 3
L6803 0
LED VREF 4
DIAGRAM - 14
D6800
B3ABA0000187
H
1 2 3
4 5 6
: +B SIGNAL LINE
C0DBAYY00729
SWITCHING REGULATOR
CONTROLLER
C2973
1200P
1 CT
2 DT2
C2971
R2908 0.1
10K
3 SS2
4 INV2
C2976 R2923
0.015 2.2K
R2920 R2921
8.2K 39K 5 FB2
C2962 R2929
6 GND
0.01 3.3K
R2914
22K
7 OCP2-
C2957 R2956
0.01 4.7K
8 OCP2+
R2915
0
9 C5V
10 OUT2
C2974
C2963
1
680P
1 2 3
Q2903 Q2902
G
B1CHPD000003 B1CHPD000003
D
REGULATOR REGULATOR
S
6 5 4
L2903
L2907
G0A330ZA0045
L2904
L2908
G0A330ZA0045 R2922
0.1
C2902 D2912 C2983 C2903 D2911
6.3V1200 B0JCPG000005 1 16V820 B0JCPG000005
: +B SIGNAL LINE
4 5 6
7 8 9
IC2901
C2953
0.1
VREF 20
DT1 19
C2964
0.1
SS1 18
R2924
5.6K
INV1 17
R2918 C2972
3.3K 0.22
FB1 16
STB 15
R2927 R2916
22K
10K
OCP1- 14
C2981
R2917
1000P 3.3K
OCP1+ 13
R2926 R2925
R2955
0 8.2K 3.9K
VCC 12
OUT1 11
C2961 C2966 C2977 R2930
680P 1 0.22 5.6K
1 2 3
G
D
S
6 5 4
R2919 L2902
0.1
G0A200D00002
C2907 C2901
35V56 35V220
G AC INLET CIRCUIT
(RED)
P5701
D TL10*
TO
SMPS CIRCUIT AC IN
110V~127V/220V~240V
IN SCHEMATIC
50Hz/60Hz
DIAGRAM - 20
TL20*
(BLK)
7 8 9
133
10 11 12 13
SA-PT480PH POWER / POWER BUTTON / AC INLET
10 11 12 13
14
A
B
C
D
E
F
G
CIRCUIT
H
14