Service manual

– 23 –
CD-C422/C422C/C2800/C2800C
Figure 23 SCHEMATIC DIAGRAM (2/10)
7
8 9 10 11 12
CNS703
CNS702
CNS703
CNS704
CNS701
CNS701
W

OMPUTER
R806
10K
R804
100K
R801 2.2K
C719
100/6.3
R787
150
D702
1SS133
D703 1SS133
R785
12
C718 220/6.3
C720 0.001
RX701
REMOTE
SENSOR
R814 220K
D701
1SS133
+B
R802
1K
ZD701
MTZJ3.3B
R799
100
Q705
KTC3199 GR
R784
10K
R782
1K
R786
10K
R800
82
Q704
KTC3199 GR
C715 0.01
C711
3.3/25
R798 100K
D705 1SS133
Q702
KRC102 M
R797 3.3K
R781
1K
D704 1SS133
R780
1K
L701
2.2µH
C714 0.01
R777 10K
XL701
SW701
RANDOM
/MEMO
SW710
TUNING
UP/TIME
SW718
TAPE
R761
2.2K
R722
3.9K
R747
3.9K
R753 1K
R745
1.8K
SW712
POWER
R710
1K
R751 1K
SW709
REW
SW711
TUNING
DOWN
/TIME
10K
R795 10K
R717 3.3K
R721
2.2K
R716 10K
R742 8.2K
R750 1K
R752 1K
R711
1.2K
SW706
FF
SW716
CD
SW713
CLOCK
R779 1K
R741 8.2K
R719
1.2K
R748
5.6K
C708
18P
(CH)
R749
12K
SW707
STOP
R734 1K
R796 10K C713 0.022
R778 10K R776 1K
SW705
REC
PAUSE
R718
1K
R704
1.5K
SW719
VIDEO
/AUX
SW714
TIMER
/SLEEP
C701 0.022
R735 1K
SW702
VOLUME 
DOWN
R720
1.8K
SW717
TUNER
/BAND
R739 10K
R740 8.2K
C712 0.001
R715 10K
SW703
X-BASS/ 
EQUALIZER 

R746
2.2K
SW715
MEMORY
C702
220/6.3
R744
1.2K
R733 1K
R702
10K
R759
3.9K
R712
1.8K
SW708
PLAY
R764 1K
R773 1K
R762 1K
R763 1K
R775 1K
R760
1K
R774 10K
R723
5.6K
R765
1K
R732 1K R736 1K
SW724
OPEN/CLOSE
R743
1K
R731 1K
12
98
57
6
43
3
9
5
6
7
8
4
111010 11
342
8
123
5
2120 22 23 24
16
17
18 19
5
04445 43 42 4149 48 47 46
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
+B
+B
+B
+B
R-CH INPUT
L-CH INPUT
P.B. MUTE IC REMOCON SYSTEM STOP TUNER SD
AVSS
RESET
CD DSP SQOUT
CD
DSP
COIN
CD DSP RES
CD T.T OPEN/CLOSE
CD UP/DOWN,DISC NO
T2 RUN PLSE
CD PUIN CD SL+ CD SL–
TAPE
SOL
POWER
CL
SL+
DO PUIN
SL–
CE
DISPLAY PWB-A2
SWITCH PWB-A3
TO MAIN PWB(1/4,4/4)
P25 7-9,P30 5-A
TO MAIN PWB(2/4,3/4)
P26 1-E,P28 2-G
DISC_NO
DRF
GND D_GND MECHA_UP /DOWN
+5V(MICOM)
3
1
3
1
SW704
VOLUME
UP
BIAS REC T1_T2 SQOUT RWC CQCK WRQ COIN DSP_RES CD_OPEN/CLOSE
DO
DI
CE
CL
X1
X2
VSS
AVREF
AVDD
SET UP
KEY-1
KEY-2
KEY-3
XT2
SRS ON/OFF
DRF
SW723
DISC SKIP
DI
C707
15P
(CH)