Sharp CD-BA250H Service Manual page 25

SOR
R603
1K
24
CLK
+B
VDD
23
C609
C603
VREF 22/50 1/50
22
R605
C607
10K
0.1
ROUT
21
C605 R607
0.15
3.9K
RBASS
20
RTRE
19
C611
C613
0.0027
1/50
RIN
18
C615
RSEL0 4.7/50
17
C617
R4 1/50
16
C619
1/50
R3
15
C621
R2 1/50
14
C623 R609
1/50 1.2K
R1
13
C625
0.0056
R623
220K
: MUTING
R137
220K
REC_R
R139 R138
10K
10K
0.7 V
0.7 V
+B
Q107 Q108
KTC3199 GR
KTC3199 GR
0 V
C125
R158
22/50
220
17 16 15 14 13
–
+ 56K
Hich=CHROME
+
56K
–
Q109
0 V
8 9 KTA1266 GR
10 11 12
SWITCHING
C126
22/50
C132
47/25
0 V
0 V
C138
R134
0.0082
10K
(PP)
ORD/
.
7
R622
220K
BIAS
1
0 V
11.6 V 3
2 0 V
Q110
KRC104 M
0 V
8
Figure 25 SCHEMATIC DIAGRAM (4/9)
RECORD SIGNAL
CD SIGNAL
+B
+B
+B
9 10
– 25 –
CD-BA250H/CD-BA2600H
FM SIGNAL
PLAYBACK SIGNAL
VIDEO SIGNAL
RDS-RST
RDS-RDDA
RDS-RDCL
RDS-READY
TUN_SM
D_GND
T_BIAS
T_T1/T2
REC/PLAY
SMUTE
SPA_SIG
A_GND
M_+12 V
+B
-B
–20 dB
M_GND
SW_5 V
UN_SW_5 V
SP_DET
SP_RLY
RDS_READY
RDS_RDCL
RDS_RDDA
RDS_RST
(A_GND)GND
+B
(D_GND) GND
C690
R690
390P
6.8K
R691 C691
390P
6.8K
D690
DS1SS133
D691
DS1SS133
11
FFC701
CNP701
1
1
2
3
4
5
CE
6
DO
7
DI
8
CLK
9
10
11
12
13
14
15
16
17
–15 V
18
19
20
21
22
23
24
VF1
25
–VP
26
VF2
27
P_IN
28
28
22
23
24
25
TUN_SM
26
DO
27
CE
28
CLK
29
DI
30
TUN_R
31
32
TUN_L
33
A+10 V
34
35
R692
33K
L-CH
JK690
VIDEO/AUX
IN
R-CH
R693
33K
CHASSIS
C693
0.001
12