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: CD AUDIO INPUT SIGNAL LINE
: TUNER/MUSIC PORT/AUX/MIC AUDIO INPUT SIGNAL LINE
DC DET AMP
DC DET AMP
FR+ HI
FR- HI
FROM/TO
FR+ LO
SERVO & SYSTEM CONTROL
FR- LO
DAMP FAULT
DAMP FAULT
DAMP OTW
DAMP OTW
DAMP CLIP
DAMP CLIP
P1
FL+ HI
FL- HI
FL+ LO
FL- LO
VALID
1
SW+
TO AUDIO
BLOCK (1/2)
SW-
: AUDIO OUTPUT SIGNAL LINE
: AM SIGNAL LINE
: FM SIGNAL LINE
MAIN P.C.B.
Q2631,Q2632
Q2633,Q2634
DC DETECT
+36V
CIRCUIT
IC2502
C1AB00003986
DIGITAL AMPLIFIER
5
INPUT A
BST A
44
6
INPUT B
OUT A
40
JK2501
OUT A
39
-
6
JK2501
14
INPUT C
OUT B
35
+
5
15
INPUT D
BST B
43
BST C
24
16
/FAULT
JK2501
OUT C
32
-
4
17
/OTW
JK2501
+
OUT D
28
3
OUT D
27
18
/CLIP
4
/RST
BST D
23
IC2503
C1AB00003986
DIGITAL AMPLIFIER
5
INPUT A
BST A
44
6
INPUT B
OUT A
40
JK2501
-
OUT A
39
10
JK2501
14
INPUT C
+
OUT B
35
9
15
INPUT D
BST B
43
BST C
24
16
/FAULT
JK2501
-
OUT C
32
8
17
/OTW
JK2501
OUT D
28
+
7
OUT D
27
18
/CLIP
4
/RST
BST D
23
IC2501
C1AB00003986
DIGITAL AMPLIFIER
5
INPUT A
BST A
44
OUT A
40
JK2501
-
OUT A
39
2
JK2501
6
INPUT B
+
OUT B
35
1
BST B
43
BST C
24
4
/RST
OUT C
32
18
/CLIP
OUT D
28
OUT D
27
17
/OTW
16
/FAULT
BST D
23
SPEAKERS
FRONT RIGHT
HIGH
FRONT RIGHT
LOW
FRONT LEFT
HIGH
FRONT LEFT
LOW
SUBWOOFER
46
SA-AKX77PH/PN AUDIO (2/2) BLOCK DIAGRAM
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