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

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
CN2341A CN5050 FRONT R
FROM MAIN (2/2)
3 15
CN2341A CN5050 MOD DA
17 1
FROM
MAIN (1/2)
CN2341A CN5050
MUTE F SW
13 5
CN2341A CN5050 FRONT L
FROM MAIN (2/2)
1 17
CN2341A CN5050 FHOP
14 4
FROM/TO
MAIN (1/2)
CN5050
CN2341A DC DET
16 2
Q5604 Q5603
SWITCH SWITCH
Q5601
SWITCH
IC5500
C0JBAB000902
INVERTER GATE
(CLOCK GENERATOR)
D5501
11 10 8
1 2 3 4 5 6 9
14
X5501 X5500
FAN DC
D5502
CHANGE
- 30V SENSE
IC5000
C1BA00000487 C1BA00000492
AUDIO DIGITAL POWER AMP
12 7
IN1M
3
INPUT PWM
MODULATOR
IN1P STAGE
2
MUTE
5 SGND1
STABI
OSC
1
TEMPERATURE SENSOR
OSCILLATOR
MANAGER
MODE
CURRENT PROTECTION
MODE
23
VOLTAGE PROTECTION
TH5001
19 SGND2
MUTE
IN2P
22
INPUT PWM
STAGE MODULATOR
IN2M
21
DELETE
(IC5501)
Q5101,Q5102
8
+ 30V SENSE
16 8
BOOT1
9
RELEASE1
DRIVER
HIGH
SWITCH1
CONTROL
OUT1 FR +
AND 10
ENABLE1
HANDSHAKE
DRIVER
LOW
BOOT2
15
ENABLE2 DRIVER
HIGH
CONTROL
OUT2
SWITCH2 AND FL +
14
HANDSHAKE
DRIVER
RELEASE2
LOW
11 13
- 30V SENSE
DC DETECT
SA-AK280PR D-AMP BLOCK DIAGRAM
SPEAKERS
FRONT R
JK5001
+
1
JK5001
-
2
FRONT L
JK5001
+
3
JK5001
-
4