Aiwa CX-BK7 Service Manual page 95

– MAIN Board –
IC501 BU4052BCF-E2
2X0 1
2X2 2
2XCOM 3
2X3
4
2X1 5
INH 6
7
VEE
VSS 8
IC601 M61529FP-D60G
42 41 40 39 38 37
INPUT
ATT
VOCAL
CUT
EXTERNAL INPUT
INPUT ATT ATT
REF
1 2 3 4 5 6
16 VDD
15 X2
14 X1
13 XCOM
12 X0
11 X3
10 A
9 B
36 35 34 33
TONE CONTROL
(BASS/MID/TREBLE)
+
SURROUND
OR
DPL BUFFER
+
TONE CONTROL
(BASS/MID/TREBLE)
7 8 9 10
IC701, 703 BU2099FV
12 BIT
CONTROL
SHIFT
CIRCUIT
REGISTER
12 BIT
STORAGE
REGISTER
2 3 4
1 5
32 31 30 29 28 27
ELECTRICAL
VOLUME
TONE ATT
+
TONE ATT
ELECTRICAL
VOLUME
11 12 13 14 15 16
20 19 18 17 16 15 14 13 12 11
OUTPUT
BUFFER
(OPEN DRAIN)
6 7 8 9 10
26 25 24 23 22
BASS
BOOST
+
MCU
INTERFACE
BASS
BOOST
17 18 19 20 21
CX-BK7
95