Panasonic SA-AK180PN User manual

© Panasonic Corporation 2009. All rights reserved.
Unauthorized copying and distribution is a violation of
law.
PSG0909010SE
CD Stereo System
Model No. SA-AK180PN
SA-AK180PU
SA-AK280EB
SA-AK280EG
SA-AK280EP
SA-AK280EE
SA-AK280GN
SA-AK280PH
SA-AK280PN
SA-AK280PR
Product Color: (K)...Black Type
Subject : Block Diagram / Schematic Diagram / Printed Circuit Board / Replace-
ment Parts List (Updates)
TABLE OF CONTENTS
PAGE PAGE
1Notes----------------------------------------------------------------- 3
2 Block Diagram----------------------------------------------------- 4
2.1. D-AMP for (SA-AK280EB/EG/EP) -------------------- 4
2.2. D-AMP for (SA-AK280EE) ------------------------------ 5
2.3. D-AMP for (SA-AK280GN) ------------------------------6
2.4. D-AMP for (SA-AK280PH/PN) -------------------------7
2.5. D-AMP for (SA-AK280PR) ------------------------------8
3 Schematic Diagram ----------------------------------------------9
Please file and use this supplement manual together with the service manual for
Model No. SA-AK180PN/PU-K Order No. PSG0905023CE
Model No. SA-AK280EB/EG/EP-K Order No. PSG0903007CE
Model No. SA-AK280EE-K Order No. PSG0904014CE
Model No. SA-AK280GN-K Order No. PSG0904010CE
Model No. SA-AK280PH/PN-K Order No. PSG0902011CE
Model No. SA-AK280PR-K Order No. PSG0904001CE

2
3.1. D-AMP Circuit for (SA-AK180PN/PU) ----------------9
3.2. D-AMP Circuit for (SA-AK280EB/EG/EP) --------- 10
3.3. SMPS Circuit for (SA-AK280EB/EG/EP) ---------- 11
3.4. D-AMP Circuit for (SA-AK280EE) ------------------- 12
3.5. SMPS Circuit for (SA-AK280EE) -------------------- 13
3.6. D-AMP Circuit for (SA-AK280GN) ------------------ 14
3.7. SMPS Circuit for (SA-AK280GN) ------------------- 15
3.8. D-AMP Circuit for (SA-AK280PH/PN) -------------- 16
3.9. D-AMP Circuit for (SA-AK280PR) ------------------- 17
4 Printed Circuit Board ------------------------------------------ 18
4.1. D-Amp P.C.B. for (SA-AK180PN/PU) -------------- 18
4.2. D-Amp P.C.B. for (SA-AK280EB/EG/EP) --------- 19
4.3. D-Amp P.C.B. for (SA-AK280EE) ------------------- 20
4.4. D-Amp P.C.B. for (SA-AK280GN) ------------------- 21
4.5. D-Amp P.C.B. for (SA-AK280PH/PN) -------------- 22
4.6. D-Amp P.C.B. for (SA-AK280PR) ------------------- 23
5 Replacement Parts List --------------------------------------- 24
5.1. Electrical Replacement Parts List-------------------- 24

3
1Notes
Background:
• For improvement of quality and performance.
This supplement includes additional and revised contents to the original service manual for below sections:-
1. Update to Block Diagram (D-AMP Circuit)
2. Update to Schematic Diagram (D-AMP Circuit and SMPS Circuit)
3. Update to Printed Circuit Board (D-AMP P.C.B.)
4. Update to Electrical Replacement Parts List

4
2 Block Diagram
2.1. D-AMP for (SA-AK280EB/EG/EP)
With reference to original service manual (section 15.4) on page 86 for Model No. SA-AK280EB/EG/EP-K
+
-
+
-
315
CN5050
CN5050
CN2341A
CN2341A
CN5050
CN2341A
CN5050
CN2341A
CN5050
CN2341A
CN5050
CN2341A
117
17 1
13 5
14 4
16 2
IC5500
INVERTER GATE
(CLOCK GENERATOR)
C0JBAB000902
X5500X5501
D5501
68
10 9
14
11
5
4
3
2
1
D5502
FAN DC
SWITCH
Q5601
SWITCH
Q5603
SWITCH
Q5604
IN1M
IN2M
IN1P
IN2P
SGND1
SGND2
OSC
MODE
INPUT
STAGE
INPUT
STAGE
CONTROL
AND
HANDSHAKE
TEMPERATURE SENSOR
CURRENT PROTECTION
VOLTAGE PROTECTION
PWM
MODULATOR
OSCILLATOR MANAGER
STABI
RELEASE2
SWITCH2
ENABLE2
MUTE
MUTE
MODE
2
3
5
19
23
1
21
22
PWM
MODULATOR CONTROL
AND
HANDSHAKE
DRIVER
HIGH
DRIVER
LOW
DRIVER
HIGH
DRIVER
LOW
RELEASE1
SWITCH1
ENABLE1
STABI
PROT
VDDP2
VSSP2 VDDP1
VSSP1
BOOT1
BOOT2
OUT1
OUT2
IC5000
C1BA00000487 C1BA00000492
AUDIO DIGITAL POWER AMP
9
10
15
14
13
11
816
12 7
- 30V SENSE + 30V SENSE
- 30V SENSE
FRONT L
FRONT R
SPEAKERS
3
JK5001
4
JK5001
1
JK5001
2
JK5001
DC DETECT
Q5101,Q5102
TH5001
FRONT R
MOD DA
MUTE F SW
FRONT L
FHOP
DC DET
FL +
FR +
: AUDIO OUTPUT SIGNAL LINE
SA-AK280EB/EG/EP D-AMP BLOCK DIAGRAM
FROM
MAIN (1/2)
FROM MAIN (2/2)
FROM MAIN (2/2)
FROM/TO
MAIN (1/2)
CHANGE
DELETE
(IC5501)

5
2.2. D-AMP for (SA-AK280EE)
With reference to original service manual (section 15.4) on page 86 for Model No. SA-AK280EE-K
+
-
+
-
315
CN5050
CN5050
CN2341A
CN2341A
CN5050
CN2341A
CN5050
CN2341A
CN5050
CN2341A
CN5050
CN2341A
117
17 1
13 5
14 4
16 2
IC5500
INVERTER GATE
(CLOCK GENERATOR)
C0JBAB000902
X5500X5501
D5501
68
10 9
14
11
5
4
3
2
1
D5502
FAN DC
SWITCH
Q5601
SWITCH
Q5603
SWITCH
Q5604
IN1M
IN2M
IN1P
IN2P
SGND1
SGND2
OSC
MODE
INPUT
STAGE
INPUT
STAGE
CONTROL
AND
HANDSHAKE
TEMPERATURE SENSOR
CURRENT PROTECTION
VOLTAGE PROTECTION
PWM
MODULATOR
OSCILLATOR MANAGER
STABI
RELEASE2
SWITCH2
ENABLE2
MUTE
MUTE
MODE
2
3
5
19
23
1
21
22
PWM
MODULATOR CONTROL
AND
HANDSHAKE
DRIVER
HIGH
DRIVER
LOW
DRIVER
HIGH
DRIVER
LOW
RELEASE1
SWITCH1
ENABLE1
STABI
PROT
VDDP2
VSSP2 VDDP1
VSSP1
BOOT1
BOOT2
OUT1
OUT2
IC5000
C1BA00000487 C1BA00000492
AUDIO DIGITAL POWER AMP
9
10
15
14
13
11
816
12 7
- 30V SENSE + 30V SENSE
- 30V SENSE
FRONT L
FRONT R
SPEAKERS
3
JK5001
4
JK5001
1
JK5001
2
JK5001
DC DETECT
Q5101,Q5102
TH5001
FRONT R
MOD DA
MUTE F SW
FRONT L
FHOP
DC DET
FL +
FR +
: AUDIO OUTPUT SIGNAL LINE
SA-AK280EE D-AMP BLOCK DIAGRAM
FROM
MAIN (1/2)
FROM MAIN (2/2)
FROM MAIN (2/2)
FROM/TO
MAIN (1/2)
CHANGE
DELETE
(IC5501)

6
2.3. D-AMP for (SA-AK280GN)
With reference to original service manual (section 15.4) on page 86 for Model No. SA-AK280GN-K
+
-
+
-
315
CN5050
CN5050
CN2341A
CN2341A
CN5050
CN2341A
CN5050
CN2341A
CN5050
CN2341A
CN5050
CN2341A
117
17 1
13 5
14 4
16 2
IC5500
INVERTER GATE
(CLOCK GENERATOR)
C0JBAB000902
X5500X5501
D5501
68
10 9
14
11
5
4
3
2
1
D5502
FAN DC
SWITCH
Q5601
SWITCH
Q5603
SWITCH
Q5604
IN1M
IN2M
IN1P
IN2P
SGND1
SGND2
OSC
MODE
INPUT
STAGE
INPUT
STAGE
CONTROL
AND
HANDSHAKE
TEMPERATURE SENSOR
CURRENT PROTECTION
VOLTAGE PROTECTION
PWM
MODULATOR
OSCILLATOR MANAGER
STABI
RELEASE2
SWITCH2
ENABLE2
MUTE
MUTE
MODE
2
3
5
19
23
1
21
22
PWM
MODULATOR CONTROL
AND
HANDSHAKE
DRIVER
HIGH
DRIVER
LOW
DRIVER
HIGH
DRIVER
LOW
RELEASE1
SWITCH1
ENABLE1
STABI
PROT
VDDP2
VSSP2 VDDP1
VSSP1
BOOT1
BOOT2
OUT1
OUT2
IC5000
C1BA00000487 C1BA00000492
AUDIO DIGITAL POWER AMP
9
10
15
14
13
11
816
12 7
- 30V SENSE + 30V SENSE
- 30V SENSE
FRONT L
FRONT R
SPEAKERS
3
JK5001
4
JK5001
1
JK5001
2
JK5001
DC DETECT
Q5101,Q5102
TH5001
FRONT R
MOD DA
MUTE F SW
FRONT L
FHOP
DC DET
FL +
FR +
: AUDIO OUTPUT SIGNAL LINE
SA-AK280GN D-AMP BLOCK DIAGRAM
FROM
MAIN (1/2)
FROM MAIN (2/2)
FROM MAIN (2/2)
FROM/TO
MAIN (1/2)
CHANGE
DELETE
(IC5501)

7
2.4. D-AMP for (SA-AK280PH/PN)
With reference to original service manual (section 15.4) on page 88 for Model No. SA-AK280PH/PN-K
+
-
+
-
315
CN5050
CN5050
CN2341A
CN2341A
CN5050
CN2341A
CN5050
CN2341A
CN5050
CN2341A
CN5050
CN2341A
117
17 1
13 5
14 4
16 2
IC5500
INVERTER GATE
(CLOCK GENERATOR)
C0JBAB000902
X5500X5501
D5501
68
10 9
14
11
5
4
3
2
1
D5502
FAN DC
SWITCH
Q5601
SWITCH
Q5603
SWITCH
Q5604
IN1M
IN2M
IN1P
IN2P
SGND1
SGND2
OSC
MODE
INPUT
STAGE
INPUT
STAGE
CONTROL
AND
HANDSHAKE
TEMPERATURE SENSOR
CURRENT PROTECTION
VOLTAGE PROTECTION
PWM
MODULATOR
OSCILLATOR MANAGER
STABI
RELEASE2
SWITCH2
ENABLE2
MUTE
MUTE
MODE
2
3
5
19
23
1
21
22
PWM
MODULATOR CONTROL
AND
HANDSHAKE
DRIVER
HIGH
DRIVER
LOW
DRIVER
HIGH
DRIVER
LOW
RELEASE1
SWITCH1
ENABLE1
STABI
PROT
VDDP2
VSSP2 VDDP1
VSSP1
BOOT1
BOOT2
OUT1
OUT2
IC5000
C1BA00000487 C1BA00000492
AUDIO DIGITAL POWER AMP
9
10
15
14
13
11
816
12 7
- 30V SENSE + 30V SENSE
- 30V SENSE
FRONT L
FRONT R
SPEAKERS
3
JK5001
4
JK5001
1
JK5001
2
JK5001
DC DETECT
Q5101,Q5102
TH5001
FRONT R
MOD DA
MUTE F SW
FRONT L
FHOP
DC DET
FL +
FR +
: AUDIO OUTPUT SIGNAL LINE
SA-AK280PH/PN D-AMP BLOCK DIAGRAM
FROM
MAIN (1/2)
FROM MAIN (2/2)
FROM MAIN (2/2)
FROM/TO
MAIN (1/2)
CHANGE
DELETE
(IC5501)

8
2.5. D-AMP for (SA-AK280PR)
With reference to original service manual (section 15.4) on page 88 for Model No. SA-AK280PR-K
+
-
+
-
315
CN5050
CN5050
CN2341A
CN2341A
CN5050
CN2341A
CN5050
CN2341A
CN5050
CN2341A
CN5050
CN2341A
117
17 1
13 5
14 4
16 2
IC5500
INVERTER GATE
(CLOCK GENERATOR)
C0JBAB000902
X5500X5501
D5501
68
10 9
14
11
5
4
3
2
1
D5502
FAN DC
SWITCH
Q5601
SWITCH
Q5603
SWITCH
Q5604
IN1M
IN2M
IN1P
IN2P
SGND1
SGND2
OSC
MODE
INPUT
STAGE
INPUT
STAGE
CONTROL
AND
HANDSHAKE
TEMPERATURE SENSOR
CURRENT PROTECTION
VOLTAGE PROTECTION
PWM
MODULATOR
OSCILLATOR MANAGER
STABI
RELEASE2
SWITCH2
ENABLE2
MUTE
MUTE
MODE
2
3
5
19
23
1
21
22
PWM
MODULATOR CONTROL
AND
HANDSHAKE
DRIVER
HIGH
DRIVER
LOW
DRIVER
HIGH
DRIVER
LOW
RELEASE1
SWITCH1
ENABLE1
STABI
PROT
VDDP2
VSSP2 VDDP1
VSSP1
BOOT1
BOOT2
OUT1
OUT2
IC5000
C1BA00000487 C1BA00000492
AUDIO DIGITAL POWER AMP
9
10
15
14
13
11
816
12 7
- 30V SENSE + 30V SENSE
- 30V SENSE
FRONT L
FRONT R
SPEAKERS
3
JK5001
4
JK5001
1
JK5001
2
JK5001
DC DETECT
Q5101,Q5102
TH5001
FRONT R
MOD DA
MUTE F SW
FRONT L
FHOP
DC DET
FL +
FR +
: AUDIO OUTPUT SIGNAL LINE
SA-AK280PR D-AMP BLOCK DIAGRAM
FROM
MAIN (1/2)
FROM MAIN (2/2)
FROM MAIN (2/2)
FROM/TO
MAIN (1/2)
CHANGE
DELETE
(IC5501)

9
3 Schematic Diagram
3.1. D-AMP Circuit for (SA-AK180PN/PU)
With reference to original service manual (section 16.5) on page 80 for Model No. SA-AK180PN/PU-K
B
TO
MAIN CIRCUIT
(CN2341A)
IN SCHEMATIC
DIAGRAM - 3
G
TO
SMPS CIRCUIT
(H5801*)
IN SCHEMATIC
DIAGRAM - 9
17
1
: +B SIGNAL LINE : -B SIGNAL LINE : AUDIO OUTPUT SIGNAL LINE
SA-AK180PN/PU D-AMP CIRCUIT
F
D-AMP CIRCUIT
SCHEMATIC DIAGRAM - 8
TO
SPEAKERS
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
A
B
D
E
F
H
G
C
R5505
100
C5027
0.1
CHANGE (C5450)
ADD (K5781, K5782)
C5051
1000P
C5052
1000P
1000P
C5050
C5053
1000P
2
43
1
G0B9R5K00003
G0B9R5K00004
FL+
FL_+
FR-
FR+
FR_+
FL-
C5150
6
5
8
9
11
12
10
14
15
13
7
2
1
4
3
17
16
CN5050
C5020
0.1
C5008
0.015
220P
C5010
0.1C5019
R5004
10
R5005
10
220P
C5012
0.1
0.1
C5514
0.1
C5519
0.1
C5515
C5518
0.1
5
6
1
3
4
2
8
7
CN5500
100V22
C5040
16V10
C5601
C5510
35V470
C5511
35V470
10
R5010
C5521
0.1
C5520
0.1
VDDA0
0.1C5018
C5030
33P
321
ZJ5400
321
ZJ5410
C5445
K5782
0
K5781
0
C5450
0.1
0
C5004
0.47
R5002
5.6K
C5002
0.47 5.6K
R5000
C5001
1000P
330P
C5006 C5025
0.1
C5024
0.1
10
R5011
OSC
IN+_FR
IN+_FR
VSSA0
C5014
0.68
C5015
0.68
R5006
22
R5007
22
R5031
5.6K
C5016
0.1
R5030
5.6K
0.1
C5017
2
43
1
L5000
G0A150L00003
C5000
1000P
5.6K
R5003
0.47
C5005
1000P
C5032
R5008
100
C5007
330P
R5001
5.6K
C5003
0.47
2
43
1
L5002
L5001
220P
C5011
0.1C5023 0.1C5021
C5028
0.1
C5031
0.47
C5009
0.015
220P
C5013
19 21 23222010213 789456 12 1514 17 18161311
C5022
0.1
B1ADCE000012
Q5603
R5608
10K
R5604
2.7K
2.7K
R5611
R5603
10K
R5602
10K
Q5604
B1ABCF000176
R5609
10K
X5500
H2A6023A0011
MAZ8051GML
D5503
R5514
10
C5555
0.1
C5554
1M
R5508
R5510
470 FAN_DC
47P
C5558
5
6
4
1
2
3
9
11
13
14
12
10
78
C0JBAB000902
INVERTER GATE
(CLOCK GENERATOR)
IC5500
FL_+
DC_DET
68KR5020 FR_+
R5019 68K
Q5101
B1ABCF000176
6.3V100
C5133
R5110
6.8K
1.2K
R5023
1.2K
R5022
0.1
C5033
B1ABCF000176
Q5102
AUDIO DIGITAL POWER AMP
MODE
MODE
SGND1 OUT1 VSSP1 PROT VDDP1 BOOT1 OUT2 BOOT2 VSSP2 VSSD VSSA2 VDDP2 STABI VSSA1
AGND
AGND
REAR R/SUBWOOFER
FRONTL
FRONT R
SIGNAL A_GND
SURROUND L
REAR L/AGND
CENTER
AGND
SURROUND R
IN1-
VDD
GND
VSS
VDD
GND
OSC IN1+
FAN DC FAN_DC
FAN GND
VSS
1
3
4
2
VDDA1
MUTE S_C (MODE 1)
MUTE F_SW (MODE 2) MUTE F_SW
MUTE F_SW
MOD_DA MOD_DA
MOD_DA
FHOP
ECO/FAN
DC_DET DC_DET
IN2+ MODE SGND2 IN2- VDDA2
SWITCH
SWITCH
Q5601
B1ABCF000176
SWITCH
DC DETECT
DC DETECT
6Y
5A
6A
VCC
4Y
4A
5Y3A
2A
2Y
1A
1Y
3Y
GND
IC5000
C1BA00000492
K5251 0
K5256 0
3300P
C5151
3300P
R5504
22
H2A7003A0011
0.01C5550
0.01C5556
100PC5557
100PC5553
390PC5551
390PC5552
X5501
MA2J1110GL
D5502
MA2J1110GL
D5501
R5506
1M
R5507
1M
C5559
47P
K5302
0
B0HCSP000001
B0HCSP000001
B0HCSP000001
B0HCSP000001
D5002
D5004
D5001
D5003
0
R5671
K5001
0
FR+
FL+
FL-
FR-
FR+
FL+
FL-
FR-
JK5001
TH5001
D4CC11040013
OSC
R5512
22

10
3.2. D-AMP Circuit for (SA-AK280EB/EG/EP)
With reference to original service manual (section 18.6) on page 101 for Model No. SA-AK280EB/EG/EP-K
B
TO
MAIN CIRCUIT
(CN2341A)
IN SCHEMATIC
DIAGRAM - 3
I
TO
SMPS CIRCUIT
(H5801*)
IN SCHEMATIC
DIAGRAM - 10
17
1
: +B SIGNAL LINE : -B SIGNAL LINE : AUDIO OUTPUT SIGNAL LINE
SA-AK280EB/EG/EP D-AMP CIRCUIT
H
D-AMP CIRCUIT
SCHEMATIC DIAGRAM - 9
TO
SPEAKERS
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
A
B
D
E
F
H
G
C
0.1
C5051
1000P
C5052
1000P
1000P
C5050
C5053
1000P
2
43
1
G0B9R5K00003
G0B9R5K00004
FL+
FL_+
FR-
FR+
FR_+
FL-
C5150
6
5
8
9
11
12
10
14
15
13
7
2
1
4
3
17
16
CN5050
C5020
0.1
C5008
0.015
220P
C5010
0.1C5019
R5004
10
R5005
10
220P
C5012
0.1
C5514
0.1
C5519
0.1
C5515 C5518
0.1
5
6
1
3
4
2
8
7
CN5500
100V22
C5040
16V10
C5601
C5510
35V470
C5511
35V470
10
R5010
C5521
0.1
C5520
0.1
VDDA0
0.1C5018
C5030
220P
33P
321
ZJ5410
321
ZJ5400
C5004
0.47
R5002
5.6K
C5002
0.47 5.6K
R5000
C5001
1000P
330P
C5006 C5025
0.1
C5024
0.1
10
R5011
OSC
IN+_FR
IN+_FR
VSSA0
C5014
0.68
C5015
0.68
R5006
22
R5007
22
R5031
5.6K
C5016
0.1
R5030
5.6K
0.1
C5017
2
43
1
L5000
G0A150L00003
C5000
1000P
5.6K
R5003
0.47
C5005
1000P
C5032
R5008
100
C5007
330P
R5001
5.6K
C5003
0.47
2
43
1
L5002
L5001
220P
C5011
0.1C5023 0.1C5021
C5028
0.1
C5031
0.22
0.47
C5009
0.015
220P
C5013
19 21 23222010213 789456 12 1514 17 18161311
C5022
0.1
B1ADCE000012
Q5603
R5608
10K
R5604
2.7K
2.7K
R5611
R5603
10K
R5602
10K
Q5604
B1ABCF000176
R5609
10K
X5500
H2A6023A0011
MAZ80510ML
D5503
R5514
10
C5555
0.1
C5554
1M
R5508
R5510
470 FAN_DC
R5505 R5512
0
100
47P
C5558
5
6
4
1
2
3
9
11
13
14
12
10
78
C0JBAB000902
INVERTER GATE
(CLOCK GENERATOR)
IC5500
OSC
FL_+
DC_DET
68KR5020 FR_+
R5019 68K
Q5101
B1ABCF000176
6.3V100
C5133
R5110
6.8K
1.2K
R5023
1.2K
R5022
0.1
C5033
B1ABCF000176
Q5102
AUDIO DIGITAL POWER AMP
CHANGE
CHANGE
CHANGE
MODE
MODE
SGND1 OUT1 VSSP1 PROT VDDP1 BOOT1 OUT2 BOOT2 VSSP2 VSSD VSSA2 VDDP2 STABI VSSA1
AGND
AGND
REAR R/SUBWOOFER
FRONTL
FRONT R
SIGNAL A_GND
SURROUND L
REAR L/AGND
CENTER
AGND
SURROUND R
IN1-
VDD
GND
VSS
VDD
GND
OSC IN1+
FAN DC FAN_DC
FAN GND
VSS
1
3
4
2
VDDA1
MUTE S_C (MODE 1)
MUTE F_SW (MODE 2) MUTE F_SW
MUTE F_SW
MOD_DA MOD_DA
MOD_DA
FHOP
ECO/FAN
DC_DET DC_DET
IN2+ MODE SGND2 IN2- VDDA2
SWITCH
SWITCH
Q5601
B1ABCF000176
SWITCH
DC DETECT
DC DETECT
6Y
5A
6A
VCC
4Y
4A
5Y3A
2A
2Y
1A
1Y
3Y
GND
IC5000
C1BA00000487
C1BA00000492
K5251 0
K5256 0
3300P
C5151
3300P
R5504
22
H2A7003A0011
0.01C5550
0.01C5556
100PC5557
100PC5553
390PC5551
390PC5552
X5501
MA2J11100L
D5502
MA2J11100L
D5501
R5506
1M
R5507
1M
C5559
47P
K5302
0
B0HCSP000001
B0HCSP000001
B0HCSP000001
B0HCSP000001
D5002
D5004
D5001
D5003
0
R5671
K5001
0
FR+
FL+
FL-
FR-
FR+
FL+
FL-
FR-
JK5001
TH5001
D4CC11040013
C5027
ADD
(C5027)
DELETE
(C5446,C5447,C5448,C5449)
DELETE
(IC5501,C5560,C5561,K5780,R5511)
ADD
(R5512)
ADD
(K5256)
CHANGE (C5450)
ADD (K5781, K5782) 0.1
C5445
K5782
0
K5781
0
C5450
0.1
0

11
3.3. SMPS Circuit for (SA-AK280EB/EG/EP)
With reference to original service manual (section 18.7) on page 102 for Model No. SA-AK280EB/EG/EP-K
P1
1
2
3
H
TO
D-AMP CIRCUIT
(CN5500)
IN SCHEMATIC
DIAGRAM - 9
B
TO
MAIN CIRCUIT
(CN2701*)
IN SCHEMATIC
DIAGRAM - 3
TO SMPS
SECTION (2/2)
6
: +B SIGNAL LINE : -B SIGNAL LINE
I
SMPS CIRCUIT
SCHEMATIC DIAGRAM - 10
SA-AK280EB/EG/EP SMPS CIRCUIT
2/21/2
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
2
3
1
IC5701
C5HACYY00003
SWITCHING REGULATOR
0
R5725
312
B0HBSM000043
D5801
R5834
2.2K
3
2
1
ZJ5801
2.2K
R5832
+30V_SENSE FAN_18V
10K
R5863
DCDET
10K3K R5862
FAN_18V
C5823
0.1
-30V_SENSE
10K
R5864
DCDET
UNR221400L
QR5801
-30V_SENSE
R5801
10K
D5807
D5809
+30V_SENSE
R5800
12K
R5860
10K
0.1
C5831
0.1
C5832
5
6
1
3
4
2
8
7
H5801*
2SA207700L
Q5860
C5800
C5826
0.01
Q5862
R5861
Q5861 - Q5862
Q5861
B1ABCF000176
100K
R5702
100K
R5703
35V2200
C5805
B0HFRJ000012
D5803
35V2200
C5808
22
R5720
D5731
B0EAMM000057
3
21
D5702
B0ZAZ0000052
C5713
0.01
32 1
ZJ5803
C5700
F1BAF1020020
1000P
ETS42BN1A6AD
MAIN TRANSFORMER
C5821 0.01
C5819 0.01 C5822 0.01 C5820 0.01
25V470
C5824
SYNC
K1 0
SYS6V
2.2K
R5805
15K
R5806
A
R
3
2
C
1
C0DABFC00002
SHUNT REGULATOR
FEED BACK CONTROL
FEED BACK
INVERTER
CURRENT
LIMITING SWITCH
CURRENT
LIMITING SWITCH
FEED BACK
IC5801
0.1
C5818
-13V
DCDET
0.1
C5815
0.1
C5812
DC_18V
0
R5803
47K
R5804
0.1
C5810
2.7K
R5802
C5896
0.1
6
8
9
7
2
1
4
5
3
10
11
CN5802
PCONT
B1GBCFLL0037
QR5810
330
R5809
330
R5807
1K
R5730
B0BC6R100010
D5725
2.2K
R5808
4
3
1
2
B3PBA0000402
PC5720
R5817
330
R5810
330
4
3
1
2
B3PBA0000402
PC5701
1.5K
R5811
0.1
C5825
1.5K
R5816
8.2K
R5812
MAZ80750ML
D5806
SYS6V
-30V_SENSE
+30V_SENSE
2.7K
R5815
24K
R5813
Q5802
B1ABCF000176
120
R5724
DC_18V
312
B0HBSM000043
D5802
-13V
FAN_18V
25V470
C5816
B0EAMM000057
D5805
D5804
B0EAMM000057
11
13
14
12
10
8
6
5
7
9
18
15
16
17
1
4
3
2
T5701
C5813
35V470
R5722
1K
C5722
1000P
220P
C5721
R5729
10K
C5728
1000P
R5728
100K
D5724 D5727
MA2J11100L MA2J11100L
R5732
100
R5726 82
B1ABCF000176
Q5722
10K
R5721
D5722
B0BC019A0007
MA2J11100L
D5723
C5720
0.1
B0EAMM000057
D5729
MAZ81800ML
D5721
D5726
B0EAKM000117
SWITCHING
1K
R5723
2SA207700L
Q5721
MA2J11100L
D5728
2SC3940ARA
Q5720
Q5720
Q5722
D
C5737
470P
C5726
0.1
C5730
50V1
C5724
D5732
B0BC035A0007
50V56
R5733
47K
R5731
0
C5725
0.1
C5723
470P
S
GND
FB
VCC
OLP/SS
OCP/BD
+30V_SENSE
PCONT
DC18V
AM_BP
-13V
DCDET
DC18V
+18V.-12V_GND
+18V.-12V_GND
GND
GND
-30V_SENSE
FAN_GND
FAN_18V
-30V_SENSE
SYS6V
SYNC
SYS_GND
+30V_SENSE
4
5
7
6
TRANSFORMER TEMP DETECT
TRANSFORMER
TEMP DETECT
DC DETECT
C5869
0.1
C5870
0.1
TH5860
D4CC11040013
PCONT
8.2K
R5814
100V0.22
C5817
VIN
VCC
DRAIN
+30V
-30V
+FAN 18V
GND
+18V
AMPGND
-12V
AM_BP
Q5803
2SC3940ARA
SWITCHING
AM_BP
R5825
1K
91
R5820
91
R5824
91
R5822
91
R5821
91
R5823
MA2J11100L
MA2J11100L
B1GDCFGA0018
QR5802
R5841
120K
R5840
82K
DC DETECT
R5750
0
0.01
C5801 C5802
0.01
0.01
C5804
0.01
C5803
K2
K4
0
0
0.01 0
0
CHANGE

12
3.4. D-AMP Circuit for (SA-AK280EE)
With reference to original service manual (section 18.6) on page 101 for Model No. SA-AK280EE-K
B
TO
MAIN CIRCUIT
(CN2341A)
IN SCHEMATIC
DIAGRAM - 3
I
TO
SMPS CIRCUIT
(H5801*)
IN SCHEMATIC
DIAGRAM - 10
17
1
: +B SIGNAL LINE : -B SIGNAL LINE : AUDIO OUTPUT SIGNAL LINE
SA-AK280EE D-AMP CIRCUIT
H
D-AMP CIRCUIT
SCHEMATIC DIAGRAM - 9
TO
SPEAKERS
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
A
B
D
E
F
H
G
C
CHANGE (C5450)
ADD (K5781, K5782)
DELETE
(C5446,C5447,C5448,C5449)
0.1
C5051
1000P
C5052
1000P
1000P
C5050
C5053
1000P
2
43
1
G0B9R5K00003
G0B9R5K00004
FL+
FL_+
FR-
FR+
FR_+
FL-
C5150
6
5
8
9
11
12
10
14
15
13
7
2
1
4
3
17
16
CN5050
C5020
0.1
C5008
0.015
220P
C5010
0.1C5019
R5004
10
R5005
10
220P
C5012
0.1
C5514
0.1
C5519
0.1
C5515 C5518
0.1
5
6
1
3
4
2
8
7
CN5500
100V22
C5040
16V10
C5601
C5510
35V470
C5511
35V470
10
R5010
C5521
0.1
C5520
0.1
VDDA0
0.1C5018
C5030
220P
33P
321
ZJ5400
32 1
ZJ5410
C5004
0.47
R5002
5.6K
C5002
0.47 5.6K
R5000
C5001
1000P
330P
C5006 C5025
0.1
C5024
0.1
10
R5011
OSC
IN+_FR
IN+_FR
VSSA0
C5014
0.68
C5015
0.68
R5006
22
R5007
22
R5031
5.6K
C5016
0.1
R5030
5.6K
0.1
C5017
2
43
1
L5000
G0A150L00003
C5000
1000P
5.6K
R5003
0.47
C5005
1000P
C5032
R5008
100
C5007
330P
R5001
5.6K
C5003
0.47
2
43
1
L5002
L5001
220P
C5011
0.1C5023 0.1C5021
C5028
0.1
C5031
0.22
0.47
C5009
0.015
220P
C5013
19 21 23222010213 789456 12 1514 17 18161311
C5022
0.1
B1ADCE000012
Q5603
R5608
10K
R5604
2.7K
2.7K
R5611
R5603
10K
R5602
10K
Q5604
B1ABCF000176
R5609
10K
X5500
H2A6023A0011
MAZ80510ML
D5503
R5514
10
C5555
0.1
C5554
1M
R5508
R5510
470 FAN_DC
R5505 R5512
0
100
47P
C5558
5
6
4
1
2
3
9
11
13
14
12
10
78
C0JBAB000902
INVERTER GATE
(CLOCK GENERATOR)
IC5500
FL_+
DC_DET
68KR5020 FR_+
R5019 68K
Q5101
B1ABCF000176
6.3V100
C5133
R5110
6.8K
1.2K
R5023
1.2K
R5022
0.1
C5033
B1ABCF000176
Q5102
AUDIO DIGITAL POWER AMP
MODE
MODE
SGND1 OUT1 VSSP1 PROT VDDP1 BOOT1 OUT2 BOOT2 VSSP2 VSSD VSSA2 VDDP2 STABI VSSA1
AGND
AGND
REAR R/SUBWOOFER
FRONTL
FRONT R
SIGNAL A_GND
SURROUND L
REAR L/AGND
CENTER
AGND
SURROUND R
IN1-
VDD
GND
VSS
VDD
GND
OSC IN1+
FAN DC FAN_DC
FAN GND
VSS
1
3
4
2
VDDA1
MUTE S_C (MODE 1)
MUTE F_SW (MODE 2) MUTE F_SW
MUTE F_SW
MOD_DA MOD_DA
MOD_DA
FHOP
ECO/FAN
DC_DET DC_DET
IN2+ MODE SGND2 IN2- VDDA2
SWITCH
SWITCH
Q5601
B1ABCF000176
SWITCH
DC DETECT
DC DETECT
6Y
5A
6A
VCC
4Y
4A
5Y3A
2A
2Y
1A
1Y
3Y
GND
IC5000
C1BA00000487
C1BA00000492
K5251 0
3300P
C5151
3300P
R5504
22
H2A7003A0011
0.01C5550
0.01C5556
100PC5557
100PC5553
390PC5551
390PC5552
X5501
MA2J11100L
D5502
MA2J11100L
D5501
R5506
1M
R5507
1M
C5559
47P
K5302
0
B0HCSP000001
B0HCSP000001
B0HCSP000001
B0HCSP000001
D5002
D5004
D5001
D5003
0
R5671
K5001
0
FR+
FL+
FL-
FR-
FR+
FL+
FL-
FR-
JK5001
TH5001
D4CC11040013
C5027
ADD
(C5027)
CHANGE
CHANGE CHANGE
K5256 0
ADD
(K5256)
OSC
DELETE
(IC5501,C5560,C5561,K5780,R5511)
ADD
(R5512)
0.1
C5445
K5782
0
K5781
0
C5450
0.1
0

13
3.5. SMPS Circuit for (SA-AK280EE)
With reference to original service manual (section 18.7) on page 102 for Model No. SA-AK280EE-K
P1
1
2
3
H
TO
D-AMP CIRCUIT
(CN5500)
IN SCHEMATIC
DIAGRAM - 9
B
TO
MAIN CIRCUIT
(CN2701*)
IN SCHEMATIC
DIAGRAM - 3
TO SMPS
SECTION (2/2)
6
: +B SIGNAL LINE : -B SIGNAL LINE
I
SMPS CIRCUIT
SCHEMATIC DIAGRAM - 10
SA-AK280EE SMPS CIRCUIT
2/21/2
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
2
3
1
IC5701
C5HACYY00003
SWITCHING REGULATOR
0
R5725
312
B0HBSM000043
D5801
R5834
2.2K
3
2
1
ZJ5801
2.2K
R5832
+30V_SENSE FAN_18V
10K
R5863
DCDET
10K3K R5862
FAN_18V
C5823
0.1
-30V_SENSE
10K
R5864
DCDET
UNR221400L
QR5801
-30V_SENSE
R5801
10K
D5807
D5809
+30V_SENSE
R5800
12K
R5860
10K
0.1
C5831
0.1
C5832
5
6
1
3
4
2
8
7
H5801*
2SA207700L
Q5860
C5800
0.01
0
C5826
0.01
0
Q5862
R5861
Q5861 - Q5862
Q5861
B1ABCF000176
100K
R5702
100K
R5703
35V2200
C5805
B0HFRJ000012
D5803
35V2200
C5808
22
R5720
D5731
B0EAMM000057
3
21
D5702
B0ZAZ0000052
C5713
0.01
32 1
ZJ5803
C5700
F1BAF1020020
1000P
ETS42BN1A6AD
MAIN TRANSFORMER
C5821 0.01
C5819 0.01 C5822 0.01 C5820 0.01
25V470
C5824
SYNC
K1 0
SYS6V
2.2K
R5805
15K
R5806
A
R
3
2
C
1
C0DABFC00002
SHUNT REGULATOR
FEED BACK CONTROL
FEED BACK
INVERTER
CURRENT
LIMITING SWITCH
CURRENT
LIMITING SWITCH
FEED BACK
IC5801
0.1
C5818
-13V
DCDET
0.1
C5815
0.1
C5812
DC_18V
0
R5803
47K
R5804
0.1
C5810
2.7K
R5802
C5896
0.1
6
8
9
7
2
1
4
5
3
10
11
CN5802
PCONT
B1GBCFLL0037
QR5810
330
R5809
330
R5807
1K
R5730
B0BC6R100010
D5725
2.2K
R5808
4
3
1
2
B3PBA0000402
PC5720
R5817
330
R5810
330
4
3
1
2
B3PBA0000402
PC5701
1.5K
R5811
0.1
C5825
1.5K
R5816
8.2K
R5812
MAZ80750ML
D5806
SYS6V
-30V_SENSE
+30V_SENSE
2.7K
R5815
24K
R5813
Q5802
B1ABCF000176
120
R5724
DC_18V
312
B0HBSM000043
D5802
-13V
FAN_18V
25V470
C5816
B0EAMM000057
D5805
D5804
B0EAMM000057
11
13
14
12
10
8
6
5
7
9
18
15
16
17
1
4
3
2
T5701
C5813
35V470
R5722
1K
C5722
1000P
220P
C5721
R5729
10K
C5728
1000P
R5728
100K
D5724 D5727
MA2J11100L MA2J11100L
R5732
100
R5726 82
B1ABCF000176
Q5722
10K
R5721
D5722
B0BC019A0007
MA2J11100L
D5723
C5720
0.1
B0EAMM000057
D5729
MAZ81800ML
D5721
D5726
B0EAKM000117
SWITCHING
1K
R5723
2SA207700L
Q5721
MA2J11100L
D5728
2SC3940ARA
Q5720
Q5720
Q5722
D
C5737
470P
C5726
0.1
C5730
50V1
C5724
D5732
B0BC035A0007
50V56
R5733
47K
R5731
0
C5725
0.1
C5723
470P
S
GND
FB
VCC
OLP/SS
OCP/BD
+30V_SENSE
PCONT
DC18V
AM_BP
-13V
DCDET
DC18V
+18V.-12V_GND
+18V.-12V_GND
GND
GND
-30V_SENSE
FAN_GND
FAN_18V
-30V_SENSE
SYS6V
SYNC
SYS_GND
+30V_SENSE
4
5
7
6
TRANSFORMER TEMP DETECT
TRANSFORMER
TEMP DETECT
DC DETECT
C5869
0.1
C5870
0.1
TH5860
D4CC11040013
PCONT
8.2K
R5814
100V0.22
C5817
VIN
VCC
DRAIN
+30V
-30V
+FAN 18V
GND
+18V
AMPGND
-12V
AM_BP
Q5803
2SC3940ARA
SWITCHING
AM_BP
R5825
1K
91
R5820
91
R5824
91
R5822
91
R5821
91
R5823
MA2J11100L
MA2J11100L
B1GDCFGA0018
QR5802
R5841
120K
R5840
82K
DC DETECT
R5750
0
0.01
C5801 C5802
0.01
0.01
C5804
0.01
C5803
K2
K4
0
0
CHANGE

14
3.6. D-AMP Circuit for (SA-AK280GN)
With reference to original service manual (section 18.6) on page 101 for Model No. SA-AK280GN-K
B
TO
MAIN CIRCUIT
(CN2341A)
IN SCHEMATIC
DIAGRAM - 3
I
TO
SMPS CIRCUIT
(H5801*)
IN SCHEMATIC
DIAGRAM - 10
17
1
: +B SIGNAL LINE : -B SIGNAL LINE : AUDIO OUTPUT SIGNAL LINE
SA-AK280GN D-AMP CIRCUIT
H
D-AMP CIRCUIT
SCHEMATIC DIAGRAM - 9
TO
SPEAKERS
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
A
B
D
E
F
H
G
C
0.1
C5051
1000P
C5052
1000P
1000P
C5050
C5053
1000P
2
43
1
G0B9R5K00003
G0B9R5K00004
FL+
FL_+
FR-
FR+
FR_+
FL-
C5150
6
5
8
9
11
12
10
14
15
13
7
2
1
4
3
17
16
CN5050
C5020
0.1
C5008
0.015
220P
C5010
0.1C5019
R5004
10
R5005
10
220P
C5012
0.1
C5514
0.1
C5519
0.1
C5515 C5518
0.1
5
6
1
3
4
2
8
7
CN5500
100V22
C5040
16V10
C5601
C5510
35V470
C5511
35V470
10
R5010
C5521
0.1
C5520
0.1
VDDA0
0.1C5018
C5030
220P
33P
321
ZJ5400
321
ZJ5410
C5004
0.47
R5002
5.6K
C5002
0.47 5.6K
R5000
C5001
1000P
330P
C5006 C5025
0.1
C5024
0.1
10
R5011
OSC
IN+_FR
IN+_FR
VSSA0
C5014
0.68
C5015
0.68
R5006
22
R5007
22
R5031
5.6K
C5016
0.1
R5030
5.6K
0.1
C5017
2
43
1
L5000
G0A150L00003
C5000
1000P
5.6K
R5003
0.47
C5005
1000P
C5032
R5008
100
C5007
330P
R5001
5.6K
C5003
0.47
2
43
1
L5002
L5001
220P
C5011
0.1C5023 0.1C5021
C5028
0.1
C5031
0.22
0.47
C5009
0.015
220P
C5013
19 21 23222010213 789456 12 1514 17 18161311
C5022
0.1
B1ADCE000012
Q5603
R5608
10K
R5604
2.7K
2.7K
R5611
R5603
10K
R5602
10K
Q5604
B1ABCF000176
R5609
10K
X5500
H2A6023A0011
MAZ80510ML
D5503
R5514
10
C5555
0.1
C5554
1M
R5508
R5510
470 FAN_DC
R5505
100
47P
C5558
5
6
4
1
2
3
9
11
13
14
12
10
78
C0JBAB000902
INVERTER GATE
(CLOCK GENERATOR)
IC5500
FL_+
DC_DET
68KR5020 FR_+
R5019 68K
Q5101
B1ABCF000176
6.3V100
C5133
R5110
6.8K
1.2K
R5023
1.2K
R5022
0.1
C5033
B1ABCF000176
Q5102
AUDIO DIGITAL POWER AMP
MODE
MODE
SGND1 OUT1 VSSP1 PROT VDDP1 BOOT1 OUT2 BOOT2 VSSP2 VSSD VSSA2 VDDP2 STABI VSSA1
AGND
AGND
REAR R/SUBWOOFER
FRONTL
FRONT R
SIGNAL A_GND
SURROUND L
REAR L/AGND
CENTER
AGND
SURROUND R
IN1-
VDD
GND
VSS
VDD
GND
OSC IN1+
FAN DC FAN_DC
FAN GND
VSS
1
3
4
2
VDDA1
MUTE S_C (MODE 1)
MUTE F_SW (MODE 2) MUTE F_SW
MUTE F_SW
MOD_DA MOD_DA
MOD_DA
FHOP
ECO/FAN
DC_DET DC_DET
IN2+ MODE SGND2 IN2- VDDA2
SWITCH
SWITCH
Q5601
B1ABCF000176
SWITCH
DC DETECT
DC DETECT
6Y
5A
6A
VCC
4Y
4A
5Y3A
2A
2Y
1A
1Y
3Y
GND
K5251 0
3300P
C5151
3300P
R5504
22
H2A7003A0011
0.01C5550
0.01C5556
100PC5557
100PC5553
390PC5551
390PC5552
X5501
MA2J11100L
D5502
MA2J11100L
D5501
R5506
1M
R5507
1M
C5559
47P
K5302
0
B0HCSP000001
B0HCSP000001
B0HCSP000001
B0HCSP000001
D5002
D5004
D5001
D5003
0
R5671
K5001
0
FR+
FL+
FL-
FR-
FR+
FL+
FL-
FR-
JK5001
TH5001
D4CC11040013
IC5000
C1BA00000487
C1BA00000492
C5027
K5256 0
ADD
(K5256)
DELETE
(C5446,C5447,C5448,C5449)
CHANGE
CHANGE
CHANGE ADD
(C5027)
R5512
0
OSC
ADD
(R5512)
DELETE
(IC5501,C5560,C5561,K5780,R5511)
CHANGE (C5450)
ADD (K5781, K5782) 0.1
C5445
K5782
0
K5781
0
C5450
0.1
0

15
3.7. SMPS Circuit for (SA-AK280GN)
With reference to original service manual (section 18.7) on page 102 for Model No. SA-AK280GN-K
P1
1
2
3
H
TO
D-AMP CIRCUIT
(CN5500)
IN SCHEMATIC
DIAGRAM - 9
B
TO
MAIN CIRCUIT
(CN2701*)
IN SCHEMATIC
DIAGRAM - 3
TO SMPS
SECTION (2/2)
6
: +B SIGNAL LINE : -B SIGNAL LINE
I
SMPS CIRCUIT
SCHEMATIC DIAGRAM - 10
SA-AK280GN SMPS CIRCUIT
2/21/2
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
2
3
1
IC5701
C5HACYY00003
SWITCHING REGULATOR
0
R5725
312
B0HBSM000043
D5801
R5834
2.2K
3
2
1
ZJ5801
2.2K
R5832
+30V_SENSE FAN_18V
10K
R5863
DCDET
10K3K R5862
FAN_18V
C5823
0.1
-30V_SENSE
10K
R5864
DCDET
UNR221400L
QR5801
-30V_SENSE
R5801
10K
D5807
D5809
+30V_SENSE
R5800
12K
R5860
10K
0.1
C5831
0.1
C5832
5
6
1
3
4
2
8
7
H5801*
2SA207700L
Q5860
C5800
0.01
0
C5826
0.01
0
Q5862
R5861
Q5861 - Q5862
Q5861
B1ABCF000176
100K
R5702
100K
R5703
35V2200
C5805
B0HFRJ000012
D5803
35V2200
C5808
22
R5720
D5731
B0EAMM000057
3
21
D5702
B0ZAZ0000052
C5713
0.01
32 1
ZJ5803
C5700
F1BAF1020020
1000P
ETS42BN1A6AD
MAIN TRANSFORMER
C5821 0.01
C5819 0.01 C5822 0.01 C5820 0.01
25V470
C5824
SYNC
K1 0
SYS6V
2.2K
R5805
15K
R5806
A
R
3
2
C
1
C0DABFC00002
SHUNT REGULATOR
FEED BACK CONTROL
FEED BACK
INVERTER
CURRENT
LIMITING SWITCH
CURRENT
LIMITING SWITCH
FEED BACK
IC5801
0.1
C5818
-13V
DCDET
0.1
C5815
0.1
C5812
DC_18V
0
R5803
47K
R5804
0.1
C5810
2.7K
R5802
C5896
0.1
6
8
9
7
2
1
4
5
3
10
11
CN5802
PCONT
B1GBCFLL0037
QR5810
330
R5809
330
R5807
1K
R5730
B0BC6R100010
D5725
2.2K
R5808
4
3
1
2
B3PBA0000402
PC5720
R5817
330
R5810
330
4
3
1
2
B3PBA0000402
PC5701
1.5K
R5811
0.1
C5825
1.5K
R5816
8.2K
R5812
MAZ80750ML
D5806
SYS6V
-30V_SENSE
+30V_SENSE
2.7K
R5815
24K
R5813
Q5802
B1ABCF000176
120
R5724
DC_18V
312
B0HBSM000043
D5802
-13V
FAN_18V
25V470
C5816
B0EAMM000057
D5805
D5804
B0EAMM000057
11
13
14
12
10
8
6
5
7
9
18
15
16
17
1
4
3
2
T5701
C5813
35V470
R5722
1K
C5722
1000P
220P
C5721
R5729
10K
C5728
1000P
R5728
100K
D5724 D5727
MA2J11100L MA2J11100L
R5732
100
R5726 82
B1ABCF000176
Q5722
10K
R5721
D5722
B0BC019A0007
MA2J11100L
D5723
C5720
0.1
B0EAMM000057
D5729
MAZ81800ML
D5721
D5726
B0EAKM000117
SWITCHING
1K
R5723
2SA207700L
Q5721
MA2J11100L
D5728
2SC3940ARA
Q5720
Q5720
Q5722
D
C5737
470P
C5726
0.1
C5730
50V1
C5724
D5732
B0BC035A0007
50V56
R5733
47K
R5731
0
C5725
0.1
C5723
470P
S
GND
FB
VCC
OLP/SS
OCP/BD
+30V_SENSE
PCONT
DC18V
AM_BP
-13V
DCDET
DC18V
+18V.-12V_GND
+18V.-12V_GND
GND
GND
-30V_SENSE
FAN_GND
FAN_18V
-30V_SENSE
SYS6V
SYNC
SYS_GND
+30V_SENSE
4
5
7
6
TRANSFORMER TEMP DETECT
TRANSFORMER
TEMP DETECT
DC DETECT
C5869
0.1
C5870
0.1
TH5860
D4CC11040013
PCONT
8.2K
R5814
100V0.22
C5817
VIN
VCC
DRAIN
+30V
-30V
+FAN 18V
GND
+18V
AMPGND
-12V
AM_BP
Q5803
2SC3940ARA
SWITCHING
AM_BP
R5825
1K
91
R5820
91
R5824
91
R5822
91
R5821
91
R5823
MA2J11100L
MA2J11100L
B1GDCFGA0018
QR5802
R5841
120K
R5840
82K
DC DETECT
R5750
0
0.01
C5801 C5802
0.01
0.01
C5804
0.01
C5803
K2
K4
0
0
CHANGE

16
3.8. D-AMP Circuit for (SA-AK280PH/PN)
With reference to original service manual (section 18.6) on page 103 for Model No. SA-AK280PH/PN-K
B
TO
MAIN CIRCUIT
(CN2341A)
IN SCHEMATIC
DIAGRAM - 3
I
TO
SMPS CIRCUIT
(H5801*)
IN SCHEMATIC
DIAGRAM - 10
17
1
: +B SIGNAL LINE : -B SIGNAL LINE : AUDIO OUTPUT SIGNAL LINE
SA-AK280PH/PN D-AMP CIRCUIT
H
D-AMP CIRCUIT
SCHEMATIC DIAGRAM - 9
TO
SPEAKERS
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
A
B
D
E
F
H
G
C
CHANGE (C5450)
ADD (K5781, K5782) 0.1
C5445
K5782
0
K5781
0
C5450
0.1
0
C5051
1000P
C5052
1000P
1000P
C5050
C5053
1000P
2
43
1
G0B9R5K00003
G0B9R5K00004
FL+
FL_+
FR-
FR+
FR_+
FL-
C5150
6
5
8
9
11
12
10
14
15
13
7
2
1
4
3
17
16
CN5050
C5020
0.1
C5008
0.015
220P
C5010
0.1C5019
R5004
10
R5005
10
220P
C5012
0.1
C5514
0.1
C5519
0.1
C5515 C5518
0.1
5
6
1
3
4
2
8
7
CN5500
100V22
C5040
16V10
C5601
C5510
35V470
C5511
35V470
10
R5010
C5521
0.1
C5520
0.1
VDDA0
0.1C5018
C5030
220P
33P
321
ZJ5410
321
ZJ5400
C5004
0.47
R5002
5.6K
C5002
0.47 5.6K
R5000
C5001
1000P
330P
C5006 C5025
0.1
C5024
0.1
10
R5011
OSC
IN+_FR
IN+_FR
VSSA0
C5014
0.68
C5015
0.68
R5006
22
R5007
22
R5031
5.6K
C5016
0.1
R5030
5.6K
0.1
C5017
2
43
1
L5000
G0A150L00003
C5000
1000P
5.6K
R5003
0.47
C5005
1000P
C5032
R5008
100
C5007
330P
R5001
5.6K
C5003
0.47
2
43
1
L5002
L5001
220P
C5011
0.1C5023 0.1C5021
C5028
0.1
C5031
0.22
0.47
C5009
0.015
220P
C5013
19 21 23222010213 789456 12 1514 17 18161311
C5022
0.1
B1ADCE000012
Q5603
R5608
10K
R5604
2.7K
2.7K
R5611
R5603
10K
R5602
10K
Q5604
B1ABCF000176
R5609
10K
X5500
H2A6023A0011
MAZ80510ML
D5503
R5514
10
C5555
0.1
C5554
1M
R5508
R5510
470 FAN_DC
R5505 R5512
100 0
47P
C5558
5
6
4
1
2
3
9
11
13
14
12
10
78
C0JBAB000902
INVERTER GATE
(CLOCK GENERATOR)
IC5500
FL_+
DC_DET
68KR5020 FR_+
R5019 68K
Q5101
B1ABCF000176
6.3V100
C5133
R5110
6.8K
1.2K
R5023
1.2K
R5022
0.1
C5033
B1ABCF000176
Q5102
AUDIO DIGITAL POWER AMP
MODE
MODE
SGND1 OUT1 VSSP1 PROT VDDP1 BOOT1 OUT2 BOOT2 VSSP2 VSSD VSSA2 VDDP2 STABI VSSA1
AGND
AGND
REAR R/SUBWOOFER
FRONTL
FRONT R
SIGNAL A_GND
SURROUND L
REAR L/AGND
CENTER
AGND
SURROUND R
IN1-
VDD
GND
VSS
VDD
GND
OSC IN1+
FAN DC FAN_DC
FAN GND
VSS
1
3
4
2
VDDA1
MUTE S_C (MODE 1)
MUTE F_SW (MODE 2) MUTE F_SW
MUTE F_SW
MOD_DA MOD_DA
MOD_DA
FHOP
ECO/FAN
DC_DET DC_DET
IN2+ MODE SGND2 IN2- VDDA2
SWITCH
SWITCH
Q5601
B1ABCF000176
SWITCH
DC DETECT
DC DETECT
6Y
5A
6A
VCC
4Y
4A
5Y3A
2A
2Y
1A
1Y
3Y
GND
IC5000
C1BA00000487
C1BA00000492
K5251 0
3300P
C5151
3300P
R5504
22
H2A7003A0011
0.01C5550
0.01C5556
100PC5557
100PC5553
390PC5551
390PC5552
X5501
MA2J11100L
D5502
MA2J11100L
D5501
R5506
1M
R5507
1M
C5559
47P
K5302
0
B0HCSP000001
B0HCSP000001
B0HCSP000001
B0HCSP000001
D5002
D5004
D5001
D5003
0
R5671
K5001
0
FR+
FL+
FL-
FR-
FR+
FL+
FL-
FR-
JK5001
TH5001
D4CC11040013
K5256 0
OSC
C5027
0.1
ADD
(K5256)
ADD
(C5027)
CHANGE
CHANGE CHANGE
DELETE
(IC5501,C5560,C5561,K5780,R5511)
DELETE
(C5446,C5447,C5448,C5449)
ADD
(R5512)

17
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
B
TO
MAIN CIRCUIT
(CN2341A)
IN SCHEMATIC
DIAGRAM - 3
I
TO
SMPS CIRCUIT
(H5801*)
IN SCHEMATIC
DIAGRAM - 10
17
1
: +B SIGNAL LINE : -B SIGNAL LINE : AUDIO OUTPUT SIGNAL LINE
SA-AK280PR D-AMP CIRCUIT
H
D-AMP CIRCUIT
SCHEMATIC DIAGRAM - 9
TO
SPEAKERS
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
A
B
D
E
F
H
G
C
R5512
0
OSC
K5256 0
C5051
1000P
C5052
1000P
1000P
C5050
C5053
1000P
2
43
1
G0B9R5K00003
G0B9R5K00004
FL+
FL_+
FR-
FR+
FR_+
FL-
C5150
6
5
8
9
11
12
10
14
15
13
7
2
1
4
3
17
16
CN5050
C5020
0.1
C5008
0.015
220P
C5010
0.1C5019
R5004
10
R5005
10
220P
C5012
0.1
C5514
0.1
C5519
0.1
C5515
C5518
0.1
5
6
1
3
4
2
8
7
CN5500
100V22
C5040
16V10
C5601
C5510
35V470
C5511
35V470
10
R5010
C5521
0.1
C5520
0.1
VDDA0
0.1C5018
C5030
220P
33P
321
ZJ5410
321
ZJ5400
C5004
0.47
R5002
5.6K
C5002
0.47 5.6K
R5000
C5001
1000P
330P
C5006 C5025
0.1
C5024
0.1
10
R5011
OSC
IN+_FR
IN+_FR
VSSA0
C5014
0.68
C5015
0.68
R5006
22
R5007
22
R5031
5.6K
C5016
0.1
R5030
5.6K
0.1
C5017
2
43
1
L5000
G0A150L00003
C5000
1000P
5.6K
R5003
0.47
C5005
1000P
C5032
R5008
100
C5007
330P
R5001
5.6K
C5003
0.47
2
43
1
L5002
L5001
220P
C5011
0.1C5023 0.1C5021
C5028
0.1
C5031
0.22
0.47
C5009
0.015
220P
C5013
19 21 23222010213 789456 12 1514 17 18161311
C5022
0.1
B1ADCE000012
Q5603
R5608
10K
R5604
2.7K
2.7K
R5611
R5603
10K
R5602
10K
Q5604
B1ABCF000176
R5609
10K
X5500
H2A6023A0011
MAZ80510ML
D5503
R5514
10
C5555
0.1
C5554
1M
R5508
R5510
470 FAN_DC
R5505
100
47P
C5558
5
6
4
1
2
3
9
11
13
14
12
10
78
C0JBAB000902
INVERTER GATE
(CLOCK GENERATOR)
IC5500
FL_+
DC_DET
68KR5020 FR_+
R5019 68K
Q5101
B1ABCF000176
6.3V100
C5133
R5110
6.8K
1.2K
R5023
1.2K
R5022
0.1
C5033
B1ABCF000176
Q5102
AUDIO DIGITAL POWER AMP
MODE
MODE
SGND1 OUT1 VSSP1 PROT VDDP1 BOOT1 OUT2 BOOT2 VSSP2 VSSD VSSA2 VDDP2 STABI VSSA1
AGND
AGND
REAR R/SUBWOOFER
FRONTL
FRONT R
SIGNAL A_GND
SURROUND L
REAR L/AGND
CENTER
AGND
SURROUND R
IN1-
VDD
GND
VSS
VDD
GND
OSC IN1+
FAN DC FAN_DC
FAN GND
VSS
1
3
4
2
VDDA1
MUTE S_C (MODE 1)
MUTE F_SW (MODE 2) MUTE F_SW
MUTE F_SW
MOD_DA MOD_DA
MOD_DA
FHOP
ECO/FAN
DC_DET DC_DET
IN2+ MODE SGND2 IN2- VDDA2
SWITCH
SWITCH
Q5601
B1ABCF000176
SWITCH
DC DETECT
DC DETECT
6Y
5A
6A
VCC
4Y
4A
5Y3A
2A
2Y
1A
1Y
3Y
GND
IC5000
C1BA00000487
C1BA00000492
K5251 0
3300P
C5151
3300P
R5504
22
H2A7003A0011
0.01C5550
0.01C5556
100PC5557
100PC5553
390PC5551
390PC5552
X5501
MA2J11100L
D5502
MA2J11100L
D5501
R5506
1M
R5507
1M
C5559
47P
K5302
0
B0HCSP000001
B0HCSP000001
B0HCSP000001
B0HCSP000001
D5002
D5004
D5001
D5003
0
R5671
K5001
0
FR+
FL+
FL-
FR-
FR+
FL+
FL-
FR-
JK5001
TH5001
D4CC11040013
C5027
0.1
CHANGE (C5450)
ADD (K5781, K5782) 0.1
C5445
K5782
0
K5781
0
C5450
0.1
0
ADD
(R5512)
DELETE
(IC5501,C5560,C5561,K5780,R5511)
ADD
(C5027)
CHANGE
CHANGE
ADD
(K5256)
DELETE
(C5446,C5447,C5448,C5449)
CHANGE

18
4 Printed Circuit Board
4.1. D-Amp P.C.B. for (SA-AK180PN/PU)
With reference to original service manual (section 17.5) on page 88 for Model No. SA-AK180PN/PU-K.
1
123456789
A
B
C
D
E
F
G
H
10 1 1213
F
D-AMP P.C.B. (REPX0727F)
SA-AK180PN/PU
D-AMP P.C.B.
0608B-1
0608B-1
SPEAKERS
C5000
C5001
C5002
C5003
C5004
C5005
C5006
C5007
C5008
C5009
C5010
C5011
C5012
C5013
C5016
C5017
C5018 C5019
C5020
C5021
C5022
C5023
C5024
C5025
C5028
C5030
C5031
C5032
C5033
C5050
C5051
C5052
C5053
HEATSINK
C5514
C5515
C5518
C5519
C5520
C5521
C5550
C5551
C5552
C5553
C5554
C5556
C5557
C5558
C5559
D5501
D5502
D5503
IC5500
K5001
Q5101
Q5102
Q5601
Q5603
Q5604
R5000
R5001
R5002
R5003
R5004
R5005
R5006
R5007
R5008
R5010
R5011
R5019
R5020
R5022
R5023
R5030
R5031
R5110
R5504
R5506
R5507
R5508
R5602
R5603
R5604
R5608
R5609
R5611
W5059
W5032
C5555
W5071
C5151
C5150
C5445
D5002
D5004
D5001
D5003
W5780
K5302
W5007
W5036
W5782
W5783
W5781
W5784
W5785
C5014
C5015
C5040
C5133
C5510
C5511
J5501
C5601
CN5050
CN5500
IC5000
JK5001
K5013
L5001
L5002
R5510
X5500
X5501
ZJ5400 ZJ5410
W5067
W5066
W5068
W5061
W5060
W5043
W5051
W5052
W5039
W5055
W5064
W5023
W5019
W5053
W5056
W5021
W5050
W5054
W5038
W5003
W5024
W5022
W5020
W5063
W5045
W5046
W5044
W5047
W5049
W5048
W5035
W5033
W5006
W5037
W5009
W5010
W5011
W5008
W5002
W5001
W5004
W5026
W5042
W5058
W5015
W5069
W5028
W5025
W5029
W5030
W5031
W5014
W5016
W5017
W5027
W5070
W5018
L5000
W5075
K5005
W5076
K5555
W5077
W5041
W5034
K5251
C5450
K5062
J5500
TH5001
R5514
R5671
W5012
R5505
R5512
C5027
K5256
K5011
K5034
K5781
K5782
ADD
(K5781, K5782)
PbF
B
C
E
B
C
E
B
C
E
B
C
EB
C
E
2
1
4
3
6
5
8
7
10
9
12
11
14
1315
16
17
1
2
3
4
5
6
7
8
23
2
5
10
15
20
1
4-FL-
3-FL+
2-FR-
1-FR+
43
21
4
3
2
1
31 2321
1
24
3
17
814

19
4.2. D-Amp P.C.B. for (SA-AK280EB/EG/EP)
With reference to original service manual (section 19.5) on page 109 for Model No. SA-AK280EB/EG/EP-K.
1
123456789
A
B
C
D
E
F
G
H
10 1 1213
H
D-AMP P.C.B. (REPX0742A)
SA-AK280EB/EG/EP
D-AMP P.C.B.
0608B-1
0608B-1
SPEAKERS
C5000
C5001
C5002
C5003
C5004
C5005
C5006
C5007
C5008
C5009
C5010
C5011
C5012
C5013
C5016
C5017
C5018 C5019
C5020
C5021
C5022
C5023
C5024
C5025
C5028
C5030
C5031
C5032
C5033
C5050
C5051
C5052
C5053
HEATSINK
C5514
C5515
C5518
C5519
C5520
C5521
C5550
C5551
C5552
C5553
C5554
C5556
C5557
C5558
C5559
D5501
D5502
D5503
IC5500
K5001
Q5101
Q5102
Q5601
Q5603
Q5604
R5000
R5001
R5002
R5003
R5004
R5005
R5006
R5007
R5008
R5010
R5011
R5019
R5020
R5022
R5023
R5030
R5031
R5110
R5504
R5506
R5507
R5508
R5602
R5603
R5604
R5608
R5609
R5611
W5059
W5032
C5555
W5071
C5151
C5150
C5445
D5002
D5004
D5001
D5003
W5780
K5302
W5007
W5036
W5782
W5783
W5781
W5784
W5785
C5014
C5015
C5040
C5133
C5510
C5511
J5501
C5601
CN5050
CN5500
IC5000
JK5001
K5011
K5013
L5001
L5002
R5510
X5500
X5501
ZJ5400 ZJ5410
W5067
W5066
W5068
W5061
W5060
W5043
W5051
W5052
W5039
W5055
W5064
W5023
W5019
W5053
W5056
W5021
W5050
W5054
W5038
W5003
W5024
W5022
W5020
W5013
W5063
W5045
W5046
W5044
W5047
W5049
W5048
W5035
W5033
W5006
W5037
W5009
W5010
W5011
W5008
W5002
W5001
W5004
W5026
W5042
W5058
W5015
W5069
W5028
W5025
W5029
W5030
W5031
W5014
W5016
W5017
W5027
W5070
W5018
L5000
W5075
K5005
W5076
K5555
W5077
W5041
W5034
K5251
C5450
K5062
J5500
TH5001
R5514
R5671
K5034
W5012
W5005
R5505
K5781
K5782
K5256
R5512
C5027
PbF
B
C
E
B
C
E
B
C
E
B
C
EB
C
E
2
1
4
3
6
5
8
7
10
9
12
11
14
1315
16
17
1
2
3
4
5
6
7
8
23
2
5
10
15
20
1
4-FL-
3-FL+
2-FR-
1-FR+
43
21
4
3
2
1
31 2321
1
24
3
17
814
DELETE
(C5449)
ADD
(C5027)
ADD
(K5256)
DELETE
(C5448)
ADD
(R5512)
DELETE
(IC5501, C5560,
C5561, R5511)
DELETE
(C5447)
ADD
(K5781, K5782)
CHANGE TO
(REPX0727F)
DELETE
(K5780)
DELETE
(C5446)

20
4.3. D-Amp P.C.B. for (SA-AK280EE)
With reference to original service manual (section 19.5) on page 109 for Model No. SA-AK280EE-K.
1
123456789
A
B
C
D
E
F
G
H
10 1 1213
H
D-AMP P.C.B. (REPX0742A)
SA-AK280EE
D-AMP P.C.B.
0608B-1
0608B-1
SPEAKERS
C5000
C5001
C5002
C5003
C5004
C5005
C5006
C5007
C5008
C5009
C5010
C5011
C5012
C5013
C5016
C5017
C5018 C5019
C5020
C5021
C5022
C5023
C5024
C5025
C5028
C5030
C5031
C5032
C5033
C5050
C5051
C5052
C5053
HEATSINK
C5514
C5515
C5518
C5519
C5520
C5521
C5550
C5551
C5552
C5553
C5554
C5556
C5557
C5558
C5559
D5501
D5502
D5503
IC5500
K5001
Q5101
Q5102
Q5601
Q5603
Q5604
R5000
R5001
R5002
R5003
R5004
R5005
R5006
R5007
R5008
R5010
R5011
R5019
R5020
R5022
R5023
R5030
R5031
R5110
R5504
R5506
R5507
R5508
R5602
R5603
R5604
R5608
R5609
R5611
W5059
W5032
C5555
W5071
C5151
C5150
C5445
D5002
D5004
D5001
D5003
W5780
K5302
W5007
W5036
W5782
W5783
W5781
W5784
W5785
C5014
C5015
C5040
C5133
C5510
C5511
J5501
C5601
CN5050
CN5500
IC5000
JK5001
K5011
K5013
L5001
L5002
R5510
X5500
X5501
ZJ5400 ZJ5410
W5067
W5066
W5068
W5061
W5060
W5043
W5051
W5052
W5039
W5055
W5064
W5023
W5019
W5053
W5056
W5021
W5050
W5054
W5038
W5003
W5024
W5022
W5020
W5013
W5063
W5045
W5046
W5044
W5047
W5049
W5048
W5035
W5033
W5006
W5037
W5009
W5010
W5011
W5008
W5002
W5001
W5004
W5026
W5042
W5058
W5015
W5069
W5028
W5025
W5029
W5030
W5031
W5014
W5016
W5017
W5027
W5070
W5018
L5000
W5075
K5005
W5076
K5555
W5077
W5041
W5034
K5251
C5450
K5062
J5500
TH5001
R5514
R5671
K5034
W5012
W5005
R5505
K5781
K5782
K5256
R5512
C5027
PbF
B
C
E
B
C
E
B
C
E
B
C
EB
C
E
2
1
4
3
6
5
8
7
10
9
12
11
14
1315
16
17
1
2
3
4
5
6
7
8
23
2
5
10
15
20
1
4-FL-
3-FL+
2-FR-
1-FR+
43
21
4
3
2
1
31 2321
1
24
3
17
814
DELETE
(C5449)
ADD
(C5027)
ADD
(K5256)
DELETE
(C5448)
ADD
(R5512)
DELETE
(IC5501, C5560,
C5561, R5511)
DELETE
(C5447)
ADD
(K5781, K5782)
CHANGE TO
(REPX0727F)
DELETE
(K5780)
DELETE
(C5446)