Panasonic SAAK-280 Schematic
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)
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
TABLE OF CONTENTS
1Notes----------------------------------------------------------------- 3
2 Block Diagram ----------------------------------------------------- 4
2.1. D-AMP for (SA-AK280EB/EG/EP) -------------------- 4
2.2. D-AMP for (SA-AK280EE) ------------------------------ 5
PAG E PAG E
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
© Panasonic Corporation 2009. All rights reserved.
Unauthorized copying and distribution is a violation of
law.
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
2
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
3
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
: AUDIO OUTPUT SIGNAL LINE
FRONT R
CN5050
CN2341A
FROM MAIN (2/2)
FROM
MAIN (1/2)
FROM MAIN (2/2)
315
CN5050
CN2341A
17 1
CN5050
CN2341A
13 5
CN5050
CN2341A
117
MOD DA
MUTE F SW
FRONT L
Q5604
SWITCH
Q5603
SWITCH
Q5601
SWITCH
TH5001
CHANGE
IC5000
C1BA00000492
C1BA00000487
AUDIO DIGITAL POWER AMP
IN1M
3
INPUT
IN1P
STAGE
2
MUTE
SGND1
5
OSC
1
MODE
INPUT
STAGE
OSCILLATOR
MUTE
MODE
23
SGND2
19
IN2P
22
IN2M
21
- 30V SENSE
PWM
MODULATOR
MANAGER
PWM
MODULATOR
12 7
STABI
STABI
PROT
RELEASE1
SWITCH1
CONTROL
ENABLE1
TEMPERATURE SENSOR
CURRENT PROTECTION
VOLTAGE PROTECTION
AND
HANDSHAKE
ENABLE2
CONTROL
SWITCH2
RELEASE2
AND
HANDSHAKE
+ 30V SENSE
DRIVER
HIGH
DRIVER
LOW
DRIVER
HIGH
DRIVER
LOW
- 30V SENSE
VDDP2
VSSP1
11
816
VDDP1
VSSP2
13
BOOT1
OUT1
BOOT2
OUT2
9
FR +
10
15
FL +
14
SPEAKERS
FRONT R
JK5001
1
JK5001
2
FRONT L
JK5001
3
JK5001
4
+
-
+
-
FROM/TO
MAIN (1/2)
CN2341A
14 4
CN2341A
16 2
CN5050
CN5050
FHOP
DC DET
IC5500
C0JBAB000902
INVERTER GATE
(CLOCK GENERATOR)
D5501
2
1
D5502
4
3
10
11
6
5
X5500X5501
8
9
14
FAN DC
DELETE
(IC5501)
Q5101,Q5102
DC DETECT
SA-AK280EB/EG/EP D-AMP BLOCK DIAGRAM
4
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
: AUDIO OUTPUT SIGNAL LINE
FRONT R
CN5050
CN2341A
FROM MAIN (2/2)
FROM
MAIN (1/2)
FROM MAIN (2/2)
315
CN5050
CN2341A
17 1
CN5050
CN2341A
13 5
CN5050
CN2341A
117
MOD DA
MUTE F SW
FRONT L
Q5604
SWITCH
Q5603
SWITCH
Q5601
SWITCH
TH5001
CHANGE
IC5000
C1BA00000492
C1BA00000487
AUDIO DIGITAL POWER AMP
IN1M
3
INPUT
IN1P
STAGE
2
MUTE
SGND1
5
OSC
1
MODE
INPUT
STAGE
OSCILLATOR
MUTE
MODE
23
SGND2
19
IN2P
22
IN2M
21
- 30V SENSE
PWM
MODULATOR
MANAGER
PWM
MODULATOR
12 7
STABI
STABI
PROT
RELEASE1
SWITCH1
CONTROL
ENABLE1
TEMPERATURE SENSOR
CURRENT PROTECTION
VOLTAGE PROTECTION
AND
HANDSHAKE
ENABLE2
CONTROL
SWITCH2
RELEASE2
AND
HANDSHAKE
+ 30V SENSE
DRIVER
HIGH
DRIVER
LOW
DRIVER
HIGH
DRIVER
LOW
- 30V SENSE
VDDP2
VSSP1
11
816
VDDP1
VSSP2
13
BOOT1
OUT1
BOOT2
OUT2
9
SPEAKERS
FRONT R
FR +
10
15
JK5001
1
JK5001
2
+
-
FRONT L
FL +
14
JK5001
3
JK5001
4
+
-
FROM/TO
MAIN (1/2)
CN2341A
14 4
CN2341A
16 2
CN5050
CN5050
FHOP
DC DET
IC5500
C0JBAB000902
INVERTER GATE
(CLOCK GENERATOR)
D5501
2
1
4
3
D5502
10
11
6
5
X5500X5501
8
9
14
FAN DC
DELETE
(IC5501)
Q5101,Q5102
DC DETECT
SA-AK280EE D-AMP BLOCK DIAGRAM
5
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
: AUDIO OUTPUT SIGNAL LINE
FRONT R
CN5050
CN2341A
FROM MAIN (2/2)
FROM
MAIN (1/2)
FROM MAIN (2/2)
315
CN5050
CN2341A
17 1
CN5050
CN2341A
13 5
CN5050
CN2341A
117
MOD DA
MUTE F SW
FRONT L
Q5604
SWITCH
Q5603
SWITCH
Q5601
SWITCH
TH5001
CHANGE
IC5000
C1BA00000487 C1BA00000492
AUDIO DIGITAL POWER AMP
IN1M
3
INPUT
IN1P
STAGE
2
MUTE
SGND1
5
OSC
1
MODE
INPUT
STAGE
OSCILLATOR
MUTE
MODE
23
SGND2
19
IN2P
22
IN2M
21
- 30V SENSE
PWM
MODULATOR
MANAGER
PWM
MODULATOR
12 7
STABI
STABI
PROT
RELEASE1
SWITCH1
CONTROL
ENABLE1
TEMPERATURE SENSOR
CURRENT PROTECTION
VOLTAGE PROTECTION
AND
HANDSHAKE
ENABLE2
CONTROL
SWITCH2
RELEASE2
AND
HANDSHAKE
+ 30V SENSE
DRIVER
HIGH
DRIVER
LOW
DRIVER
HIGH
DRIVER
LOW
- 30V SENSE
VDDP2
VSSP1
11
816
VDDP1
VSSP2
13
BOOT1
OUT1
BOOT2
OUT2
9
SPEAKERS
FRONT R
FR +
10
15
JK5001
1
JK5001
2
+
-
FRONT L
FL +
14
JK5001
3
JK5001
4
+
-
FROM/TO
MAIN (1/2)
CN2341A
14 4
CN2341A
16 2
CN5050
CN5050
FHOP
DC DET
IC5500
C0JBAB000902
INVERTER GATE
(CLOCK GENERATOR)
D5501
2
1
4
3
D5502
10
11
6
5
X5500X5501
8
9
14
FAN DC
DELETE
(IC5501)
Q5101,Q5102
DC DETECT
SA-AK280GN D-AMP BLOCK DIAGRAM
6
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
: AUDIO OUTPUT SIGNAL LINE
FRONT R
CN5050
CN2341A
FROM MAIN (2/2)
FROM
MAIN (1/2)
FROM MAIN (2/2)
315
CN5050
CN2341A
17 1
CN5050
CN2341A
13 5
CN5050
CN2341A
117
MOD DA
MUTE F SW
FRONT L
Q5604
SWITCH
Q5603
SWITCH
Q5601
SWITCH
TH5001
CHANGE
IC5000
C1BA00000492
C1BA00000487
AUDIO DIGITAL POWER AMP
IN1M
3
INPUT
IN1P
STAGE
2
MUTE
SGND1
5
OSC
1
MODE
INPUT
STAGE
OSCILLATOR
MUTE
MODE
23
SGND2
19
IN2P
22
IN2M
21
- 30V SENSE
PWM
MODULATOR
MANAGER
PWM
MODULATOR
12 7
STABI
STABI
PROT
RELEASE1
SWITCH1
CONTROL
ENABLE1
TEMPERATURE SENSOR
CURRENT PROTECTION
VOLTAGE PROTECTION
AND
HANDSHAKE
ENABLE2
CONTROL
SWITCH2
RELEASE2
AND
HANDSHAKE
+ 30V SENSE
DRIVER
HIGH
DRIVER
LOW
DRIVER
HIGH
DRIVER
LOW
- 30V SENSE
VDDP2
VSSP1
11
816
VDDP1
VSSP2
13
BOOT1
OUT1
BOOT2
OUT2
9
SPEAKERS
FRONT R
FR +
10
15
JK5001
1
JK5001
2
+
-
FRONT L
FL +
14
JK5001
3
JK5001
4
+
-
FROM/TO
MAIN (1/2)
CN2341A
14 4
CN2341A
16 2
CN5050
CN5050
FHOP
DC DET
IC5500
C0JBAB000902
INVERTER GATE
(CLOCK GENERATOR)
D5501
2
1
4
3
D5502
10
11
6
5
X5500X5501
8
9
14
FAN DC
DELETE
(IC5501)
Q5101,Q5102
DC DETECT
SA-AK280PH/PN D-AMP BLOCK DIAGRAM
7
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
: AUDIO OUTPUT SIGNAL LINE
FRONT R
CN5050
CN2341A
FROM MAIN (2/2)
FROM
MAIN (1/2)
FROM MAIN (2/2)
315
CN5050
CN2341A
17 1
CN5050
CN2341A
13 5
CN5050
CN2341A
117
MOD DA
MUTE F SW
FRONT L
Q5604
SWITCH
Q5603
SWITCH
Q5601
SWITCH
TH5001
CHANGE
IC5000
C1BA00000492
C1BA00000487
AUDIO DIGITAL POWER AMP
IN1M
3
INPUT
IN1P
STAGE
2
MUTE
SGND1
5
OSC
1
MODE
INPUT
STAGE
OSCILLATOR
MUTE
MODE
23
SGND2
19
IN2P
22
IN2M
21
- 30V SENSE
PWM
MODULATOR
MANAGER
PWM
MODULATOR
12 7
STABI
STABI
PROT
RELEASE1
SWITCH1
CONTROL
ENABLE1
TEMPERATURE SENSOR
CURRENT PROTECTION
VOLTAGE PROTECTION
AND
HANDSHAKE
ENABLE2
CONTROL
SWITCH2
RELEASE2
AND
HANDSHAKE
+ 30V SENSE
DRIVER
HIGH
DRIVER
LOW
DRIVER
HIGH
DRIVER
LOW
- 30V SENSE
VDDP2
VSSP1
11
816
VDDP1
VSSP2
13
BOOT1
OUT1
BOOT2
OUT2
9
SPEAKERS
FRONT R
FR +
10
15
JK5001
1
JK5001
2
+
-
FRONT L
FL +
14
JK5001
3
JK5001
4
+
-
FROM/TO
MAIN (1/2)
CN2341A
14 4
CN2341A
16 2
CN5050
CN5050
FHOP
DC DET
IC5500
C0JBAB000902
INVERTER GATE
(CLOCK GENERATOR)
D5501
2
1
4
3
D5502
10
11
6
5
X5500X5501
8
9
14
FAN DC
DELETE
(IC5501)
Q5101,Q5102
DC DETECT
SA-AK280PR D-AMP BLOCK DIAGRAM
8
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