Sharp CD-BA250 Service Manual page 23

C601
75341
ROCESSOR
R603
24
CLK
+B
VDD
23
C603
CB
VREF 22/50
+ –
FACE 22
C607 C609
R605
0.1
ROUT 1/50 10K
21
RBASS R607
20
3.9K
C605
RTRE
0.1
19
C611
0.0027
RIN
18
C613
1/50
RSEL0
17
C615
4.7/50
AUX R4
16
C617
1/50
ECK R3
15
C619
1/50
R2
UNER
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
C125 R158
22/50 +B
220
18 17 16 15 14 13
– +
56K
Hich=CHROME
56K
– +
7 8 9 10 11 12
C126
22/50
C132
47/25
C138
R134
0.0082
10K
(PP)
K
RECORD/
AMP.
7
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RECORD SIGNAL
CD SIGNAL
1K
+B
+B
+B
1
2 3
Q110
KRC104 M
8 9
Figure 23 SCHEMATIC DIAGRAM (4/9)
FM SIGNAL
PLAYBACK SIGNAL
VIDEO SIGNAL
+B
+B
+B
10
– 23 –
CD-BA250/CD-BA2600
TUN_SM
1
CE
2
DO
3
DI
4
CLK
5
D_GND
6
T_BIAS
7
T_T1/T2
8
REC/PLAY
9
SMUTE
10
SPA_SIG
11
A_GND
12
M_+12V
+B
13
-B –15V
14
–20dB
15
M_GND
16
+B SW_5V
17
UN_SW 5V
+B
18
SP_DET
19
SP_RLY
20
VF1
21
–VF
22
VF2
23
P_IN
24
24
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
R690 C690
JK690
6.8K 390P
VIDEO/AUX
R691 C691
6.8K 390P
R-CH
R693
D690
33K
DS1SS133
CHASSIS
D691
DS1SS133
C693
0.001
11 12
FFC701
1
IN