Sharp CD-BA250 Service Manual page 23

C601
75341
ROCESSOR
24
CLK
+B
VDD
23
+ – C603
CB
VREF 22/50
+ –
22
FACE
C607 C609
0.1
1/50
ROUT
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
UNER R2
14
C621
R609
1/50
CD 1.2K
R1
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
22/50 220
18 17 16 15 14 13
– +
56K
Hich=CHROME
56K
– +
7
8 9 10 11 12
C126
22/50
C132
47/25
R134
10K
K
RECORD/
AMP.
7
RECORD SIGNAL
CD SIGNAL
R603
1K
+B
R605
10K
+B
1
2
3
+B
Q110
KRC104 M
C138
0.0082
(PP)
8
Figure 23 SCHEMATIC DIAGRAM (4/9)
+B
+B
+B
+B
9 10
– 23 –
CD-BA250/CD-BA2600
FM SIGNAL
PLAYBACK SIGNAL
VIDEO SIGNAL
TUN_SM
CE
DO
DI
CLK
D_GND
T_BIAS
T_T1/T2
REC/PLAY
SMUTE
SPA_SIG
A_GND
M_+12V
+B
-B
–15V
–20dB
M_GND
+B SW_5V
UN_SW 5V
+B
SP_DET
SP_RLY
VF1
–VF
VF2
P_IN
TUN_SM
DO
CE
CLK
DI
TUN_R
(A_GND)GND
TUN_L
A+10V
+B
(D_GND)GND
R692
33K
R690
C690
6.8K 390P
R691 C691
6.8K 390P
R693
D690
33K
DS1SS133
D691
DS1SS133
C693
0.001
11
FFC701
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
24
22
23
24
25
26
27
28
29
30
31
L-CH
JK690
VIDEO/AUX
IN
R-CH
CHASSIS
12