Aiwa CX-JDS20 Service Manual page 42

CX-JDS20/JDS50
• IC Block Diagrams
— BD Board —
IC301 TA94A34FG-002
32 31 30 29 28 27
RAS 33
CAS 34
OE 35
BUCK 36
CCE 37
AD12 38
AD11 39
VDDM 40
SRMSTB 41
VDDT 42
AD10 43
AD9 44
Switch
AD8 45
AD7 46
AD6 47
AD5 48
49 50 51 52 53 54
CX-JDS20/JDS50
26 25 24 23 22 21 20 19 18 17
Bus
Timing
VC0
Generator
55 56 57 58 59 60 61 62 63 64
16 LRCKIA
15 BCKIA
14 SDI0
13 LRCKO
12 BCKO
11 SDO0
10 VSS
9 VDDT
8 MIACK
7 MICK
6 MIDIO
— DS-MAIN Board —
5 MILP
IC401 BD3882F
4 MICS
40
3 STANBY
2 RESET
1 VDDP
1 2
42 42
IC251 BA5947FM
19
CH4OUTR D D 18
20
CH4OUTF D D 17
21 D 16
CH3OUTF D
19k
PIN26
6.5k
CH3OUTR 22 D D 15
10k
Vref
POW POW
VCC
VCC
POWVCC 23 14
(ch3, 4) (ch1, 2)
50k 50k
50k 50k
24 POW
MUTE 13
VCC
50k 50k
25 12
GND
Vref
GND 26
11
10
PREGND 27
28 9
CT
CH3RIN 29 8
CH3FIN 30
7
100k
31 6
CH4IN
PIN3
32 5
CH4CAPA
10k
50k
SW
OUTVREF 33 4
DPOUT 34 3
Pre
2
TREVCC 35
Vcc
36
NC 1
39 38 37 36 35 34 33 32 31 30 29 28
REAR
VOLUME
FRONT
TREBLE
VOLUME
FRONT
VOLUME
3 4 5 6 7 8 9 10 11 12
CH1PUTF
CH1OUTR
CH2OUTF
CH2OUTR
POWVCC
CNF4
GND
C-M
C-P
VG
CH2RIN
CH2FIN
CH1RIN
CH1FIN
SW
OPIN+
OPIN-
NC
27 26 25 24 23 22 21
BASS MIDDLE
BASS
REAR
VOLUME
LOGIC
CONTROL
TREBLE MIDDLE
13 14 15 16 17 18 19 20