Sharp CD-BK260V Service Manual page 23

IC601
LC75341
PROCESSOR
R603
24
CLK
+B
VDD
23
C603
CCB
VREF 22/50
+ –
TERFACE 22
C607 C609
R605
0.1
ROUT 1/50
10K
21
RBASS R607
20
3.9K
C605
RTRE
0.15
19
C611
0.0027
RIN
18
C613
1/50
RSEL0
17
C615
4.7/50
AUX R4
16
C617
1/50
DECK R3
15
C619
1/50
TUNER R2
14
C621
R609
1/50
CD R1 1.2K
13
C623
1/50
C625
0.0056
+B
-B
R623
220K
R622
220K
R137
REC_R
220K
R139 R138
10K
10K
Q108
Q107
KTC3199 GR KTC3199 GR
MUTING
MUTING
C125
R158
22/50 220 +B
18 17 16 15 14 13
– +
56K
Hich=CHROME
56K
– +
Q109
7 8 9 KTA1266 GR
10 11 12
SWITCHING
C126
22/50
C132
47/25
C138
R134
0.0082
10K
(PP)
1
5K
D RECORD/
K AMP.
7
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P34 6 - C
TO MIC PWB
CNPK1
1 2 3 4 5 6 7 8 9 10
CNSK1
BIK1
1 2 3 4 5 6 7 8 9 10
1K
+B
+B
+B
1
2 3
Q110
KRC104 M
BIAS
R141
4.7K
8 9
Figure 23 SCHEMATIC DIAGRAM (2/13)
CD-BK260V/CD-BK2700V/CD-BK280V
FM SIGNAL
PLAYBACK SIGNAL
VIDEO IN SIGNAL
RECORD SIGNAL
CD SIGNAL
MIC SIGNAL
+B
+B
+B
R690
6.8K
R691
6.8K
10
– 23 –
FFC701
1
2
3
4
5
6
7
8
TUN_SM
9
CE
10
DO
11
DI
12
CLK
13
D_GND
14
T_BIAS
15
T_T1/T2
16
REC/PLAY
17
SMUTE
18
SPA_SIG
19
A_GND
20
M_+12V
+B
21
-B –15V
22
–20dB
23
M_GND
24
SW_5V
+B
25
26
SP_DET
27
SP_RLY
28
VF1
29
–VF
30
VF2
31
P_IN
32
32
SW601
SPAN SELECTOR
10 kHz/100 kHz
9 kHz/50 kHz
TUN_SM
22
DO
23
CE
24
CLK
25
DI
26
TUN_R
27
(A_GND)GND
28
TUN_L
29
A+10V
+B
30
(D_GND)GND
31
R692
33K
L-CH
C690
JK690
390P
VIDEO/AUX
C691 IN
390P
R-CH
R693
D690
33K
DS1SS133
CHASSIS
D691
DS1SS133
C693
0.001
11 12
1