Sharp CD-K491W Service Manual page 26

CD-K491W
A
TAPE MECHANISM ASSEMBLY
MM1
FWM2
TAPE
MOTOR
M
B
SWM3
REC FWD
SWM6
CAM SW
SWM5
F.A.S
SOLM1
SOL
SWM4
C
REC RVS
D
TAPE1
PLAYBACK HEAD
L–CH
R–CH
E
TAPE2
RECORD/
PLAYBACK HEAD
1
2
3
4
5
6
ERASE
F
HEAD
TAPE2 HEAD
PWB-M
G
H
• NOTES ON SCHEMATIC DIAGRAM can be found on page 16.
1
TAPE SV MECHA.
TAPE
L
SPEED
H
+ RM1
VRM1
2.7K
3.3K(B)
–
MOT+B
REC FWD
CAM SW
1
M-GND
2
F.A.S
RUN PULSE
PHM1
+B
SOL
REC RVS
CK01
680P
3 3
2 2
1 1
CK02
680P
0V
QK03
2SC1845 F
0V
0V
QK05
2SC1845 F
0V
7 7
6 6
5 5
4 4
3 3
2 2
1 1
0V
0V
QK06 0V
2SC1845 F
QK04
0V
2SC1845 F
2
Figure 26 SCHEMATIC DIAGRAM (5/20)
PLAYBACK SIGNAL
RECORD SIGNAL
WTL11
L
1 MOT L 1
H
2 MOT H 2
3 MOT +B 3
4 T2 A-FP 4
5 CAM SW 5
6 M-GND 6
T1 RUN-SW
7 7
8 T2 PH-OUT 8
9 +B 9
SOL
10 10
11 T2 B-FP 11
12 T1 CrO 2 12
13 T2 CrO 13
2
RK01
1K
RK02
1K
RK03
2.2K
0.7V
QK07
0.7V
KTC3199 GR
0V
RK09
RK05
4.7K
3.3K 0V
RK11
0V
15K
RK08
0V
47K
RK12
RK10
15K
0V
0V
4.7K
0.7V
QK08
KTC3199 GR
RK06
3.3K
0.7V
RK04
2.2K
REC
QK09
KTA1266 GR
REC
8.7V
8.7V
0V
RK13 CK09
8.0V
1
10K 0.022
3.8V
3
2
0V
REC 3.8V
RK14
QK10
10K
KRC104 M
3 4
– 26 –
QL11
KTA1266 GR
DRIVER
0V 0V
RL11
33K
0V
RL12
RL13
2.2K
6.8K
RL14
0V 0V
QL12
33K
KTA1266 GR
DRIVER
0V
+B
KTA1271 Y
DRIVER
+B
CL11
0.01
PB EQ(CrO 2 )
RK19
56
RK21
100K
CK15
47/16
CK17
CK11 0.033
330P
RK17
1K
0V 0V CK13 0.6V
330P
1 2 3
HIGH=T1
23 22
24
0.6V
0V
0V
CK14
RK18
330P
CK12
1K
330P
CK18
CK16 0.033
47/16
RK22
100K
RK20
56
PB EQ(CrO 2
RK69
220
RK15
0V 4.7K
1 CK60
100/16
3 2
0V PB EQ(CrO 2
QK11
KRC104 M
5
QL17
KRC104 M
SWITCHING
2
4.
0V 3
0V
QL13 1
KRC104 M
SWITCHING
4.0V
2
3
0V
QL14
KTA1273 Y
1
12V 0V
+B
0V
RL15
KR
RL16
10K
2.2K
12V
2
QL15
12V
RL17
10(1/2W)
12V
0V
RL18
RL19
10K 2.2K
12V
+B
RL20
1.2K
RK33
22K
QK13
KRC104 M
3 2
RK34
0V 0V
68K
1
0V
RK27
8.2K
RK31
33K
CK23
RK23
0.01
3.9K
RK25
5.6K
CK25
RK37
CK19 0.0082
6.8K
560P
CK21 RK29
10K
1/50
0V 0V
3.0V 1.3V
4 5 19 7
112K
–
+
HIG
+
–
112K
21 20 18
6
0V
0.3V 1.3V
0V
CK22
RK30
1/50
10K
CK26
CK20 0.0082
CK27
560P
C
0.022
RK26 27
5.6K
RK24
CK24
3.9K
0.01
RK28
8.2K
0V
1
)
3 2
0V 0V
QK14
KRC104 M
)
6