Sharp CD-C491H (serv.man3) Service Manual ▷ View online
CD-C491H
– 32 –
Figure 32 SCHEMATIC DIAGRAM (5/20)
A
B
C
D
E
F
G
H
1
2
3
4
5
6
• NOTES ON SCHEMATIC DIAGRAM can be found on page 22.
TAPE MECHANISM ASSEMBLY
QK14
KRC104 M
QK09
KTA1266GR
RK13
10K
CK09
0.022
RK14
10K
QK10
KRC104 M
QK11
KRC104 M
RK15
4.7K
CK01
680P
CK02
680P
RK02
1K
RK01
1K
QK13
KRC104 M
QK03
2SC1845F
RK03
2.2K
QK05
2SC1845F
RK05
3.3K
RK31
33K
CK23
0.01
RK27
8.2K
RK25
5.6K
RK23
3.9K
RK21
100K
RK19
56
CK19
560P
CK17
0.033
RK29
10K
CK25
0.0082
CK21
1/50
CK13
330P
CK11
330P
CK12
330P
CK20
560P
CK22
1/50
RK24
3.9K
RK22
100K
CK18
0.033
RK26
5.6K
RK30
10K
CK26
0.0082
RK32 33K
CK24
0.01
RK28
8.2K
RK20
56
CK3
0.02
LK0
1.8m
CK33
22/25
RK39 560
CK31 270P
CK29
470P
RK37
6.8K
RK35
6.8K
RK33
22K
CK34
22/25
CK
0.0
RK38 6.8K
CK32
270P
CK30 470P
RK36 6.8K
CK27
0.022
CK28 3.3/25
RK47
10K
RK34
68K
RK18
1K
RK17
1K
CK07 0.001
CK08 0.001
QK07
KTC3199GR
QK08
KTC3199GR
RK08
47K
RK07 47K
QK04
2SC1845F
QK06
2SC1845F
RK06
3.3K
RK04
2.2K
RK11
15K
RK12
15K
RK09
4.7K
RK10
4.7K
1
24
23
2 3
4 5
22
21
20
8
18
7
6
19
17
CK05 330P
CK06 330P
RK89
1K
RK90
1K
CK16
47/16
CK15
47/16
CK14
330P
330P
RL13
6.8K
QL12
KTA1266 GR
DRIVER
RL12
2.2K
RL14
33K
RL11
33K
QL11
KTA1266 GR
DRIVER
RL15
10K
QL14
KTA1273 Y
CL12
47/16
RL17
10(1/2W)
QL15
KTA1271 Y
DRIVER
DL12
1SS133
RL18
10K
RL20
1.2K
PHM1
M
FWM2
SWM4
REC RVS
SOLM1
SOL
SWM2
T2 CrO
2
SWM3
REC FWD
SWM6
CAM SW
SWM5
F.A.S
SWM1
T1 CrO
2
VRM1
3.3K(B)
3.3K(B)
RM1
2.7K
2.7K
RK4
560
LK0
1.8m
CL11
0.01
LK05
2.2
µ
H
LK06
2.2
µ
H
RK69
220
CK60
100/16
QL17
KRC104 M
SWITCHING
QL18
KRC104 M
QL13
KRC104 M
SWITCHING
RL16
2.2K
RL19
2.2K
TAPE MECHAMISM PWB-H
2
2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
1 1
WTL11
1
CNPK01
1
CNSK01
2
2
3
3
1
CNPK02
2
3
4
5
6
7
RECO
PLAY
REC
REC
PLAYBACK HEAD
TAPE1
HIGH=T1
–
+
+
112K
–
+
112K
–
+
+
+
PB EQ(CrO
2
)
PB EQ(CrO
2
)
PB EQ(CrO
2
)
REC
T2 CrO
2
T1 CrO
2
T2 B-FP
T2 PH-OUT
T1 RUN-SW
M-GND
T2 A-FP
MOT +B
MOT H
MOT L
+B
MM1
TAPE
MOTOR
H
L
–
+
L
H
MOT+B
M-GND
F.A.S
RUN PULSE
SOL
REC FWD
CAM SW
REC RVS
T2 CrO
2
T1 CrO
2
SOL
+B
HIGH=HI-SP
CAM SW
+B
+B
+B
+B
1
2
3
1
2
3
1
2
3
L–CH
R–CH
1
2
3
1
2
3
1
2
3
1
2
3
1
2
10
10
11
12
13
11
12
13
–
TAPE
SPEED
CNSK02
BI102
6
5
4
3
2
1
1
7
6
5
4
3
2
6
5
4
3
2
TAPE2 HEAD
PWB-G
ERASE
HEAD
R-CH
L-CH
RECORD/
PLAYBACK HEAD
PLAYBACK HEAD
TAPE2
0V
0V
0V
0V
0V
0V
0V
0V
12V
12V
12V
12V
12V
0V
4.0V
4.0V
0V
0V
0V
0V
0V
0V
0V
0V
0.7V
0.7V
0V
0V
0V
0.7V
0.7V
8.7V
8.7V
8.0V
0V
0V
0V
3.8V 3.8V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0.6V
0.6V
0.6V
0V
3.0V
1.3V
1.3V
3.0V
0.6V
0V
0V
0V
– 33 –
CD-C491H
Figure 33 SCHEMATIC DIAGRAM (6/20)
7
8
9
10
11
12
RK57
4.7K
QK19
KRC104 M
CK41
47/25
CK46
220/10
CK45 22/25
RK50 10K
RK58
150(1/2W)
ICK01
AN7345K
PLAYBACK AND RECORD
/PLAYBACK AMP.
QK15
KRC104 M
SWITCHING
CK37
0.018
CK10
47/25
CK35
0.022
RK41 82
LK01
1.8mH
CK33
22/25
RK39 560
CK31 270P
CK29
470P
RK37
6.8K
RK35
6.8K
K33
2K
CK39
0.0033
CK42
47/25
CK34
22/25
CK38
0.018
CK36
0.022
RK38 6.8K
CK32
270P
CK30 470P
6
.8K
3
.3/25
CK47 0.022
RK45 10K
RK49 10K
CK40
0.0033
RK47
10K
CK44
0.022
CK43
0.022
RK48
10K
RK43
10K
RK46
10K
RK52
1K
RK67
47K
QK28
2SC2236 Y
LK03
1mH
CK52
47/16
RK62
47K
RK72
56K
RK64
4.7K
QK27
KRC104 M
RK73
56K
CK50
0.0082
(P.P)
CK51
0.027
(ML)
RK68
4.7
LK04
330
µ
H
QK31
KTC3199 GR
QK32
KTC3199 GR
RK70
4.7K
RK71
3.3K
CK61
560P
RK53
10K
RK54
10K
RK55
22K
RK56
22K
16
9
8
18
7
17
RK65 10K
RK60
270
RK61
270
CK62
0.047
(ML)
RK66
27K
RK42
82
RK40
560
LK02
1.8mH
RK74
68K
RK75
68K
QK30 KRC104 M
RK81
6.8K
RK63 10K
CK55
0.022
CL13
3.3/50
RL24 3.3K
QL17
RC104 M
WITCHING
QL18
KRC104 M
QL19
KRC104 M
DRIVER
QL16
KRC107 M
DL11
1SS133
G
QK40
KRC107 M
QK29
KRC107 M
1
2
3
4
5
6
7
8
9
RECORD SIGNAL
PLAYBACK SIGNAL
GND(D)
PB.MUTE
GND(A)
12V(A)
VCC
RIPPLE
ALC
ALC
HI.SP
–
+
+
56K
+
56K
HI.SP
HI.SP
BIAS
T1-CrO
2
T2-B-FP
TA-MOT-SW
M-12V
TA-CAM-SW
T1-RUN
T2-RUN
T2-A-FP
M-GND
TA-F/R SPEED
TA-SOL
HIGH=HI-SP
NOR/HIGH
1
3
1
2
3
1
2
1
2
3
+B
M-12V
TA-CAM-SW
T2-A-FP
M-GND
TA–F/R SPEED
T1-RUN
T2-RUN
TA-SOL
TA-MOT-SW
T2 CrO
2
H:CrO
2
L:NORM
T2-B-FP
T1-CrO
2
PB.MUTE H:ON L:OFF
HI. SP H:LOW L:HIGH
PRE R-CH
TA T1/T2 H:T1 L:T2
MUTING
QK17
2SC2878 A
MUTING
QK18
2SC2878 A
1
2
3
SWITCHING
QK16
KRC104 M
1
2
3
1
2
3
SWITCHING
SWITCHING
QK24
KTA1266 GR
SWITCHING
QK26
KRC104 M
SWITCHING
QK25
KTA1266 GR
1
2
3
1
2
3
MUTING
QK22
KTC3199 GR
MUTING
QK21
KTC3199 GR
1
2
3
1
2
2
3
3
1
QK29,QK30,
QK40:SWITCHING
+B
+B
BIAS H:ON L:OFF
REC R-CH
REC L-CH
TA R/P H:PB L:REC
REC MUTE
TA PB EQ L:NORM H:CrO
2
+B
BEAT CANCEL
3
10
11
12
PRE L-CH
13
14
15
16
17
18
–
54
55
19
20
GND
15
14 13
12
11
10
23
24
25
26
27
MAIN PWB-A(2/5)
12V
12V
4.0V
0V
0V
0V
0V
0V
0V
4.1V
0V
0V
0V
0.6V
3.0V
0V
3.7V
6.0V
0V
0V
3.0V
3.0V
0.6V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0.7V
0.7V
0.7V 0.7V
0V
0V
0V
0V
0V
0V
0V
0V
0V
11.7V
11.6V
11.7V
0V
0V
0V
0V
11.7V
11.7V
TO MAIN SECTION
P30 1-G
TO MAIN SECTION
P30 1-G
CD-C491H
– 34 –
Figure 34 SCHEMATIC DIAGRAM (7/20)
A
B
C
D
E
F
G
H
1
2
3
4
5
6
• NOTES ON SCHEMATIC DIAGRAM can be found on page 22.
RR19
47K
CR15
4.7/50
RR21
47K
CR17
4.7/50
QR11
KRA107 M
QR13
KRA107 M
RP12
100
RP11
100
CP30
2.2/50
RP34
1K
RP36
100K
RP35
100K
CP29
2.2/50
RP33
1K
QP11
2SC2878 A
RP29
5.6K
CP25 0.001
CP26 0.001
RP30
5.6K
QP12
2SC2878 A
RP27
47K
RP28
47K
4
3
2
1
ICP11
NJM4565M
BUFFER AMP.
RP22
100
RP20
2.2K
RP19
2.2K
RP21
100
8
5
6
7
CP23
10/16
RP25
1K
CP24
10/16
RP26
1K
RP18
8.2K
RP17
8.2K
CP19
0.1(ML)
CP20
0.1(ML)
CP15
0.1
(ML)
CP16
0.1
(ML)
CP17 47P
CP18 47P
RP15
100K
RP16
100K
CP28
0.022
CP27
0.022
RP32
220
RP31
220
RR20
47K
CR16
4.7/50
QR12
KRA107 M
CP07
100P
CP08
100P
CP09
47/25
CP10
47/25
CP13
0.001
CP14
0.001
CR66
47/25
CR65
47/25
DR12 1SS133
DR11 1SS133
CR13
390P
CR14
390P
RR17
1.8K
RR18
RR18
1.8K
RR11
27K
RR12
27K
CR11
390P
CR12
390P
RR15
27K
RR16
27K
JR12
JR11
CR10 0.001
RR13
1.8K
RR14
1.8K
3
ICR11
GP1F38T
PHOTO DIGITAL
OUTPUT /LED
DIGITAL-OUT
1
2
CR02
100/10
CR01
0.022
ZDR01
MTZJ3.3B
RR01
100
LR01
2.2
µ
H
CR03
0.001
3
CNPR11
2
CNPR12
2 1
1
RP54
100K
CP44
0.001
CP58
0.068
RP53
100K
CP41
2.2/50
RP51
1K
QP15
2SC2878 A
RP7
5.6K
CP47
0.001
CP53
0.001
QP16
2SC2878 A
GND(A)
GND(A)
–
+
+
–
REAR MUTE
VIDEO-1
+B
+B
–B
AC3-C IN
AC3-SW IN
AC3-LS IN
AC3-RS IN
GND(A)
R-CH IN
L-CH IN
1
2
3
1
2
1
2
3
S.W.
MUTE
REAR MUTE
CENTER
MUTE
L-CH
R-CH
L-CH
R-CH
VIDEO-2
+B
–B
INPUT
VIDEO/AUX-2
INPUT
VIDEO/AUX-1
L-CH
R-CH
L-CH
R-CH
GND
+4.3V
DOUT
DOUT
GND
P30 6-H,P31 10-G,12-B
TO MAIN SECTION
P29 11-D
TO CD SERVO PWB
CNS99
P46 1-A
TO DOLBY PWB
CNSA11
RP52
1K
CP42
2.2/50
S.W.MUTE
CENTER MUTE
CP32
0.001
CP31
0.001
QP13
2SC2878 A
RP47 5.6K
CP37 0.001
CP38 0.001
RP48 5.6K
QP14
2SC2878 A
L-CH
(1/2)
(2/2)
3
55
18
54
57
56
76
58
32
31
30
85
18
81
84
18
80
– 35 –
CD-C491H
Figure 35 SCHEMATIC DIAGRAM (8/20)
7
8
9
10
11
12
CP57
22/25
RP73
22K
QP11
2SC2878 A
RP29
5.6K
CP25 0.001
CP26 0.001
RP30
5.6K
QP12
2SC2878 A
RP27
47K
RP28
47K
CP23
10/16
RP25
1K
CP24
10/16
RP26
1K
CP28
0.022
CP27
0.022
RP32
220
RP31
220
QP17
KRC107 M
SWITCHING
CP09
47/25
CP10
47/25
RP91 100
CP91
100/6.3
CFWP02
FWP02
CFWP01
FWP01
CNPP01
CNPP02
WTP02
7
3
CP44
0.001
CP58
0.068
QP15
2SC2878 A
RP70
5.6K
RP62
5.6K
CP47
0.001
CP53
0.001
QP16
2SC2878 A
S-MUTE
POWER
S-MUTE
–15V
GND(A)
+12V(A)
GND(D)
+4.6V(D)
RELAY4
RELAY3
+12V(M)
GND(M)
+7.3V(CD)
CD GND(D1)
CD GND(D2)
PROT
FAN CONT
RELAY1
SP LEVEL
H/P SW
POSISTOR
VOL SW
OUT3
H/P SW
VOL SW
RELAY2
OUT1(L-CH)
RELAY1
GND(A)
GND(A)
FAN CONT
OUT2(R-CH)
SP LEVEL
PROT
+5V(AC3-A)
GND(D3)
GND(D4)
CD GND(D1)
POWER
+5V(AC32A)
GND(D3)
+12V(M)
AMP
VF1
–VP
VF2
VF2
+4.6V(D)
GND(D)
+12V(A)
–15V
+5V(AC3-B)
RELAY4
RELAY3
OUT5
GND(A)
OUT4
OUT6
+B
1
13
OUT6
RELAY4
RELAY4
OUT4
GND(M)
+12V(M)
GND(A)
FAN SW
RELAY3
RELAY3
VOL SW
PROT
PROT
AMP
POSISTOR
1
16
VOL SW
FAN SW
+12V(M)
GND(M)
GND(A)
H/P SW
FAN CONT
RELAY1
OUT1(L-CH)
RELAY2
OUT3
OUT2(R-CH)
SP LEVEL
SP LEVEL
POSISTOR
PROT
AMP
+B
1
2
3
+B
GND(M)
+12V(M)
+12V(A)
GND(A)
–15V(A)
+4.6V(D)
GND(D)
+7.3V(CD)
CD GND(D2)
VGND
VOLTAGE
REGULATOR
QP91
2SD468 C
VF2
–VP
VF1
P40 1-B
TO DISPLAY PWB
FWD02
+B
+B
+B
VGND
+B
–B
+B
+B
–B
+B
FM SIGNAL
TO SPEAKER
AMP.2 PWB
P44 1-F
P44 1-B
P42 1-G
P42 5-G
P42 9-G
TO SPEAKER
AMP.1 PWB
CFWX11
CFWV11
TO POWER PWB
CNS901
TO POWER PWB
CNS902
TO POWER PWB
FW901
QP13
2SC2878 A
RP47 5.6K
CP37 0.001
CP38 0.001
RP48 5.6K
QP14
2SC2878 A
GND(A)
+B
1 2 3
13
12
11
10
9
8
7
6
5
4
3
1
16
7
6
5
8
9
4
3
3
1
10
11
12
13
14
15
2
3
5
11
10
4
1
1
2
3
4
4
1
2
2
3
WTP01
2
OUT5
2
POSISTOR
6
7
8
9
GND(D4)
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
RELAY2
29
27
19
18
28
33
MAIN PWB - A ( 3 / 5 )
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