D-Amp Circuit For (Sa-Ak280Pr) - Panasonic SA-AK180PN Service Manual

3.9.

D-AMP Circuit for (SA-AK280PR)

With reference to original service manual (section 18.6) on page 103 for Model No. SA-AK280PR-K
1 2 3
SCHEMATIC DIAGRAM - 9
A
H D-AMP CIRCUIT
JK5001
FL- 4
TO
FL+ 3
B
SPEAKERS
FR- 2
FR+ 1
C
CN5500
VDD 8
I VDD 7
TO
GND 6
SMPS CIRCUIT
GND 5
(H5801*)
VSS 4
IN SCHEMATIC
VSS 3
DIAGRAM - 10
FAN GND
2
FAN DC 1
D
CN5050
1
FRONTL
17
SIGNAL A_GND 16
FRONT R 15
AGND
14
REAR R/SUBWOOFER
13
AGND 12
B
SURROUND L 11
TO
E AGND
MAIN CIRCUIT 10
(CN2341A) SURROUND R
9
IN SCHEMATIC REAR L/AGND 8
DIAGRAM - 3 CENTER
7
MUTE S_C (MODE 1) 6
MUTE F_SW (MODE 2) 5
FHOP
4
ECO/FAN
3
DC_DET 2
MOD_DA
1
17
F
K5251 0
0
K5256
ADD
(K5256)
G
H
1 2 3
4 5 6
: +B SIGNAL LINE : -B SIGNAL LINE : AUDIO OUTPUT SIGNAL LINE
FL-
FL+
FR-
FR+
1
OSC
C5002 R5000
0.47
IN+_FR
C5004 R5002
0.47
R5010
10
VDDA0
VSSA0
FAN_DC
R5011
10
IN+_FR
K5001
IC5500
C0JBAB000902
MUTE F_SW INVERTER GATE
R5504
22 (CLOCK GENERATOR)
DC_DET C5550 0.01
1
1A
MOD_DA
C5556 0.01
2
1Y
D5502 D5501
MA2J11100L MA2J11100L
C5557 100P
3 2A
X5501
R5506
H2A7003A0011
1M
C5551 390P
4
2Y
C5553 100P
5 3A
X5500
R5507
H2A6023A0011
1M
C5552 390P
6 3Y
7
GND
4 5 6
7 8 9
CHANGE
IC5000
C1BA00000487
C1BA00000492
AUDIO DIGITAL POWER AMP
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
C5030 C5008 C5009
C5024 C5025
C5006
220P 0.015 0.015
5.6K 330P 0.1 0.1
33P
C5010 R5004 R5005 C5011
5.6K
220P 10 10 220P
C5012
C5013
CHANGE CHANGE
220P 220P
0
R5510
470
FAN_DC
VCC 14
R5514
OSC
6A
13
6Y 12
5A
11
5Y 10
4A 9
R5505 R5512
0
100
8
4Y
ADD
(R5512)
7 8 9
17
10 11 12
17 18 19 20 21 22 23
R5008
C5007
100
C5027 C5028
330P
0.1 0.1
TH5001
D4CC11040013
ADD
(C5027)
C5000
1000P
1 2
3 4
L5000
G0A150L00003
D5002 B0HCSP000001
CHANGE
D5004 B0HCSP000001 (C5450)
ADD
(K5781, K5782)
D5001 B0HCSP000001
D5003 B0HCSP000001
Q5603
B1ADCE000012
SWITCH
R5611
2.7K
Q5101
B1ABCF000176
DC DETECT
R5602
Q5604
10K
MOD_DA
B1ABCF000176
R5609 SWITCH
10K
MUTE F_SW
Q5601
DELETE B1ABCF000176
(IC5501,C5560,C5561,K5780,R5511)
SWITCH
SA-AK280PR D-AMP
10 11 12
13 14
A
B
MODE
FR_+
L5001
G0B9R5K00003
C
FR+
1 2
FR-
3 4
FL-
3 4
FL+
1 2
L5002
G0B9R5K00004 D
FL_+
C5445
0.1
K5782
0
C5450
0.1 K5781
0 0
3 2 1 3 2 1
ZJ5400 ZJ5410 E
DELETE
(C5446,C5447,C5448,C5449)
F
Q5102
B1ABCF000176
DC DETECT
R5020 68K FR_+
R5019 68K FL_+
G
R5671
0
CIRCUIT
H
13 14