Sharp QT-CD121 Service Manual page 14

QT-CD121
HEADPHONES PWB-A4
J201 FW202
HEADPHONES
5
A
R228
1
R227
C203
C216
R220
B C201
R201
B
C218 C202
R202
C217
R221
A R222
C215
R219
A B
C
C D
R710
8
R708
7
C701
6
5
C702
4
D
3
2
R711
1
33 32
35
40
48
45
IC701
50
49
55
60
64
Q740
E C B
R745
C740
R744
R740
D741
E D740
R743 R741
R742
C741
SW761
CD LID
OPEN/CLOSE
F
SWITCH PWB-A2
SW774 SW773
TRACK DOWN/ TRACK UP/CUE
REVIEW
R771
G
RX771
H
• The numbers 1 to 12
1
1 2 3
CNP201
FW202
5
IC201
R203
1
1 R209
C207
2 R205
C209 3
R212
4 C205
5 R204
C233
R210
6
7
C208
C206
R206
8
R211
C220
C211
C212
C219
C214 C223
C213
1 2 3 4 5 6 7 8 9
A
SW203
X-BASS
B
SW202
A
SURROUND
B
R457
R455
R458
R456
R709
COR801
R712
R714
C705
C704
R715
R736
R724
30
X701
R727
25
20 17
15 R730
16 R860
R721
10
C847
5 R734
R725
1
R726
R728
R723
R729
R722
R731
R720
R732
R719
R733
R718
R716
D309
D308
1
4
11
5
4
FW701
3
BK
2
BK
FW701
4
1
C779
R772
SW772
STOP
SW771
PLAY
3
2
1
are waveform numbers shown in page 17.
2 3
Figure 14 WIRING OF P.W.BOARD (1/2)
1 2 3 4
CNP101
C E H G
SW102
P.B REC
A B D F
C353
1 5 7
3 9 11
C354
2 4 6 8
10 12
D102
C123
C234
C221
C222
C226
C224
IC202
10 11 12 13
R230
1
2
C302
3
C301
C890
B C E
33 32
Q804
L801
30
35
40 25
48
20
45 17
IC802
50 15
16
49
10
55
C820
60 5
64
1
33 32
30
35
40 25
48
20 17
45
IC801
50 15
16
49
10
55
60 5
64 1
R17
1 6
BI803
R7
C17
C20
R9
IC1
1 2 3
3
1 2 3 4 5 6 7 8 9
CF1
2
C2
R2
1
R5
R1
F1
C8
C9
C5
C4
L1
C6
L2
VC1 VC2
C16
TC2
TC1
C36
VC3
VC4
TC3
TC4
D1
4
– 14 –
C351
B C E
Q351
1
2
6
15
14
7
21
8
29
30
7
22
28 1
BR
BK
BK
BK
BK
1
8
BI801
BK
BK
BK
Q805
E
C
B
12
10
R813
C813
1
8
1
BK
WH
WH
WH
WH
5
9
BR
GY
GY
COR1
GY
GY
GY
C33
1
C31
2
C34
C32
3
1 2 3 4 5 6 7 8 9 10 11 12
IC2
24 23 22 21 2019 18 17 16 15 14 13
R8
R6
C38
C11
L4
L3
AM BAR ANTENNA
MAIN PWB-A1
5
CNS801
1
2
3
4
5
6
7
8
CNS802
1
2
3
4
5
CNS803
1
2
3
4
5
6
6