Sharp CD-C491H (serv.man3) Service Manual ▷ View online
CD-C491H
– 36 –
A
B
C
D
E
F
G
H
1
2
3
4
5
6
• NOTES ON SCHEMATIC DIAGRAM can be found on page 22.
Figure 36 SCHEMATIC DIAGRAM (9/20)
P31 8-C
TO MAIN SECTION
A
B
–
+
+
–
+
GND
(1/2)
(1/2)
(1/2)
(1/2)
(2/2)
(2/2)
(1/2)
(1/2)
(1/2)
(2/2)
(2/2)
(2/2)
LT IN
RT IN
GND
–7V
–7V
–7V
–7V
–7V
–7V
–7V
–7V
–7V
ICZ07
NJM4565M
ICZ05
NJM4565M
+7V
+7V
+7V
+7V
+7V
+7V
+7V
+7V
0X
1X
2X
3X
0Y
1Y
2Y
3Y
Y COM
X COM
INH
Vss
IN1
F5
IN2
F6
F7
F4
F5
F3
F2
VEE
F2
F1
F4
NC
IN1
IN2
F7
F6
CLK
DI
F3
VDD
VCC+7V
TEST2
VSS
TEST1
S
+B
+B
–B
+B
+B
–B
–B
+B
+B
+B
–B
+B
–B
–B
–B
–B
+B
+B
1
2
3
1
2
3
–B
TUN L
TAPE L
AUX1 L
AUX2 L
TUN R
TAPE R
AUX1 R
AUX2 R
1
5
2
4
7
8
9
6
3
13
1
1
8
2
3
2
3
1
2 3
5 6
7
5 5
6 6
7 7
RZ01
6.8K
8
2 3
2 3
2 3
5
5
5
6
6
6
7
7
7
8 8
4 4 4
8 8
4
4 4
ICZ08
TC4052BF
DUAL 4CH ANALOG
MULTIPLEXER
ICZ03
NJM4565M
ICZ02
NJM4565M
ICZ04
NJM4565M
ICZ06
NJM4565M
CZ30
100/10
CZ32
100/10
ICZ01
LC7522
GRAPHIC EQUALIZER ELECTRIC VOLUME
5
4
3
2
1
6
7
8
9
RZ66
100
RZ67
100
RZ68
100
RZ65
100
100
RZ02
6.8K
CZ27 100/10
CZ26 100/10
CZ01
1/50
CZ02
1/50
CZ04
10/16
CZ03
10/16
10/16
CZ34 10/16
CZ38 10/16
CZ36 47/16
CZ40
47/16
4
3
2
1
RZ60
2.7K
CZ46
10/16
RZ59
2.7K
8
5
6
7
CZ47
10/16
RZ55 100K
RZ57
1K
CZ43
10/16
RZ63
100K
RZ64
100K
RZ56 100K
RZ58
1K
CZ42
10/16
ICZ09
NJM4565M
BUFFER AMP.
QZ03
KRC107M
QZ04
KRC107M
RZ53 1K
RZ54
1K
CZ16(ML)
0.012
CZ12(ML)
0.0015
CZ08
270P
CZ15
0.012(ML)
CZ11
0.0015(ML)
CZ07
270P
CZ33
0.022
0.022
CZ31
0.022
CZ29
0.022
CZ45 47P
CZ44 47P
CZ35
0.022
CZ39
0.022
CZ37
0.022
CZ41
0.022
CZ10(ML)
0.027
CZ06
4700P
CZ09
0.027
CZ05
4700P
CZ28
0.022
CZ25
0.022
RZ40 330K
RZ42
680
RZ34 330K
RZ36 680
RZ28 270K
RZ30 680
RZ22 120K
RZ24 680
RZ16 120K
RZ14 1M
RZ18 680
RZ11 1M
RZ05 1M
RZ12 1M
RZ06 1M
RZ08 100K
RZ39 330K
RZ41 680
RZ33 330K
RZ35 680
RZ27 270K
RZ29 680
RZ21 120K
RZ23 680
RZ15 120K
RZ17
680
RZ07
100K
RZ43
1K
RZ09
100
100
RZ10
100
RZ45
1K
RZ47
1K
RZ49
1K
RZ51
1K
RZ46
1K
RZ48
1K
RZ50
1K
RZ52
1K
RZ62
10K
RZ61
10K
RZ93
1K
RZ94
1K
RZ87
470K
RZ88
470K
RZ8
470
RZ90 22K
RZ91 22K
RZ38 1M
RZ32 1M
RZ26 1M
RZ20 1M
RZ37
1M
RZ31 1M
RZ25 1M
RZ19 1M
RZ13 1M
CZ22
0.33/50
CZ21
0.33/50
RZ03
6.8K
CZ69
100P
RZ04
6.8K
CZ70
100P
CZ14(ML)
0.27
CZ18(ML)
0.18
CZ20(ML)
0.033
CZ24(ML)
0.039
CZ13
0.27(ML)
CZ17
0.18(ML)
CZ19
0.033(ML)
CZ23
0.039(ML)
RZ95
220
RZ44
1K
1K
CZ71
1/50
ZDZ03 MTZJ5R1A
(2/2)
(1/2)
–
+
+
–
+
–
+
–
+
–
+7V
+7V
–
14
13
10
11 12
15
16
19 18 17
20
21
22
23
+
–
+
–
+
–
+
–
+
–
1
1
1
16
12
14
15
11
10
78
15
84
85
82
17
80
81
F1
24
25
26
27
28
ICZ02, ICZ04, ICZ06:
BUFFERAMP.
ICZ03, ICZ05, ICZ07:
BUFFER AMP.
ICZ09
NJM4565M
BUFFER AMP.
– 37 –
CD-C491H
7
8
9
10
11
12
Figure 37 SCHEMATIC DIAGRAM (10/20)
P31 9-C
TO MAIN SECTION
LBASS3(NC)
LBASS2(NC)
LBASS1(NC)
(NC)RBASS2
(NC)RBASS1
(NC)RBASS3
–7V
N
N
D
VR CLK
VR DATA
LT IN
RT IN
–15V
+7V
+12V
GND(A)
GND(A)
D GND
+7V
+7V
OUT4(NC)
OUT3(NC)
OUT2(NC)
OUT1(NC)
SWIN
GNDS
GNDR
C IN
R IN
BYPASSR
BYPASSL
LTRE(NC)
(NC)CR2
(NC)CR1
(NC)CL2
(NC)CL1
AVSS
R OUT
L OUT
C OUT
SL OUT
SW OUT
LA TCH
DATA
CLK
SR OUT
A GND
D GND
AVDD
DVDD
GND
MAIN PWB - A ( 4 / 5 )
FM SIGNAL
–B
–B
+B
B
+B
+B
C-IN
SWIN
SRIN
SLIN
L-OUT
R-OUT
A
B
DI
CLK
VR LA TCH
GND(D)
C-IN
SWIN
SRIN
SLIN
L-OUT
R-OUT
GND(D)
DI
VR CLK
VR DATA
VR DATA
FUNC A
FUNC B
FUNC B
CLK2
SW OUT
SR OUT
SL OUT
SL OUT
C OUT
R OUT
L OUT
L OUT
SW OUT
SR OUT
SL OUT
C OUT
R OUT
L OUT
–B
–B
–B
+B
–B
+B
+B
QZ01,QZ02:
VOLTAGE
REGULATOR
SPE-ANA
LT IN
RT IN
GND(A)
–15V
SPE-ANA
+12V
GND(A)
L IN
R IN
–B
PLAYBACK SIGNAL
CZ61
1/50
CZ60
1/50
CZ59
1/50
CZ57
1/50
CZ58
1/50
CZ56
1/50
DZ01
DZ02
ICZ10
M62446FP
6CH ELECTRONIC VOLUME
ZDZ02
MTZJ7.5C
QZ02
KTC3203Y
CZ66
1/50
1/50
CZ65
10/50
CZ62
22/16
CZ67
22/16
CZ49
1/50
CZ51
1/50
CZ50
1/50
CZ55
0.001
CZ54
0.022
RZ80
10K
RZ82
10K
RZ81
10K
RZ79
10K
RZ84
10K
RZ83
10K
10K
RZ76
1K
RZ78
1K
RZ77
1K
RZ70 10K
RZ72
10K
RZ71
10K
RZ69
RZ69
10K
RZ86
1K
RZ87
470K
RZ88
470K
RZ89
470K
ZDZ01
MTZJ7.5C
QZ01
KTA1271Y
CZ64
1/50
RZ85
1K
CZ63 10/50
CZ52
1/50
CZ53
1/50
RZ74 10K
RZ73 10K
RZ95
220
RZ75
10
10
77
28
19
18
86
18
87
1
2
3
4
5
6
7
8
9
+B
DZ01,DZ02:1SS133
VR LA TCH
67
68
69
70
71
72
73
54
55
58
56
57
76
27
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
(NC)RTRE
24
23
22
L IN
GNDC
SLIN
SRIN
10
11
12
13
14
15
16
17
18
19
20
21
76
57
56
58
55
54
09
M4565M
FFER AMP.
CD-C491H
– 38 –
A
B
C
D
E
F
G
H
1
2
3
4
5
6
Figure 38 SCHEMATIC DIAGRAM (11/20)
• NOTES ON SCHEMATIC DIAGRAM can be found on page 22.
QS_SPRED
L_CH_IN
R_CH_IN
C_OUT
L_CH_OUT
R_CH_OUT
RR_OUT
RL_OUT
GND(AU)
+12V(A)
RL_IN
RR_IN
QS_AC
QS_MO
C_IN
P31 12-C
TO MAIN SECTION
MAIN PWB - A ( 5 / 5 )
ICQ01
QS7777PF
Q-SOUND
DECORDER
CQ10 10/50
CQ09 10/50
CQ12 0.22/50
RQ10
220
CQ30 47/25
CQ25
0.47/50
CQ31 0.47/50
CQ34 0.47/50
CQ20
2.2/50
2.2/50
CQ16
2.2/50
2.2/50
CQ18
2.2/50
CQ17
2.2/50
2.2/50
CQ21
0.47/50
CQ35
0.022
(ML)
CQ13
@
0.0027(ML)
CQ11
@
0.022(ML)
CQ22
0.022(ML)
CQ23
0.022
(ML)
CQ26 0.022 (ML)
CQ32
0.022(ML)
CQ24
0.0047(ML)
CQ27 0.022(ML)
CQ28 0.0047(ML)
CQ33 0.022(ML)
CQ08
0.082
(ML)
CQ14
0.022
RQ09
330
ZDQ01
MTZJ5.1B
CQ15 47/25
CQ36
0.022(ML)
CQ29 100/10
RQ05
@
1K
RQ02
@
1K
RQ01
@
1K
RQ03
@
1K
RQ04
@
1K
CQ19
2.2/50
RQ13
@
1K
RQ15
@
1K
RQ11
@
1K
RQ12
@
1K
RQ14
@
1K
RQ07
@
1K
RQ06
@
1K
RQ08
@
1K
DQ01
1SS133
DQ02
1SS133
RQ20 100K
RQ17 100K
RQ18 100K
RQ16 100K
RQ19 100K
RQ21 330K
64 65 66 57 56 58 54 55 19 18 62 63 59 60 61
FM SIGNAL
MSC5
BYP
P/S
VDD
RROUT
RROUT
RLOUT
MSC3
MSC2
MSC1
AC
AR
MUTE
PSAVE
GND
MO
MSC6
2
(OS-CON)
SPRED
+B
+B
+B
VREFIN
VREFOUT
CQ01
2.2/50
CQ02
2.2/50
2.2/50
CQ05
2.2/50
CQ03
2.2/50
2.2/50
CQ04
2.2/50
2.2/50
CQ07
0.012(ML)
0.012(ML)
CQ06
0.001(ML)
0.001(ML)
FLIN
SUBIN
FROUT
FLOUT
QXBC
QXCC
QXAC
QXDC
5
5
1
2
1
4
3
VCC
4
3
2
1
4
37
38
39
40
41
42
43
44
45
46
47
48
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25 26 27 28 29 30 31 32 33 34 35 36
4
3
3
FRIN
CIN
COUT
RLIN
RRIN
MSC4
3
21
– 39 –
CD-C491H
7
8
9
10
11
12
Figure 39 SCHEMATIC DIAGRAM (12/20)
RT54
@
1K
RT53
@
1K
RT52
@
1K
RT51
@
1K
R376
1K
R378
82K
Q371
KTA1266 GR
C321
@
100/16
R369
82
L342
2.2
µ
H
C333
22P
(CH)
R370
1K
RT35
220K
RT36
220K
RT37
220K
R397
1K
R332
100K
R350
2.7K
C367
1/50
CT27
22P
(CH)
RT26
1K
D351
1SS133
D352
1SS133
ZD352
MTZJ3.9B
Q361
KRC107 M
R387
22K
CT36
0.022
CT22
0.022
CT21
47/10
LT21
2.2
µ
H
RT31 1K
RT29 1K
RT28 1K
LT22
2.2
µ
H
CT28
47/10
CT29
0.022
CT26
22P
(CH)
XT21
4.332MHz
RT21
100K
CT25
560P
CT24
0.022
C380
10/16
C302
0.001
C329 33P
R301
@
330
C338
0.001
IC302
LC72131
PLL (TUNER)
C339
22P
(CH)
R373 1K
C337 0.022
T351
CF352
R352
1K
D302 1SS133
D301 1SS133
Q302
KTC3199 GR
VD301-1
KV1236Z23F
C331
0.047
R319
100K
C332
0.022
T302
C330
10P
(UJ)
R331
5.6K
C323
0.022
C322
6.8P(CH)
T301
CF302
C384
0.001
Q304
KTC3199 GR
C326
18P
(CH)
C327
680P
Q303
KTC3199 GR
R323
68K
KV1236Z23F
VD301-2
C335
18P
(CH)
C336
470P
T306
R333 5.6K
C324
27P
(UJ)
T305
R324
100K
R337
@
470
R336
4.7K
C334
18P
R334 5.6K
C325
220P
R335 100K
C328
0.022
R344
@
470
R345
@
4.7K
C347
@
0.022
Q301
2SC380 O
C346
@
0.022
CF301
R349
33
C345
@
0.022
R348
680
C341
0.022
R347
6.8K
R346
330
C397
0.022
L353
1mH
R393
1K
R391 390
R392 390
R383
5.6K
R384
5.6K
Q360
KTA1266 GR
R385
5.6K
C391
47/16
C395 0.022
C396 100/10
ZD351
MTZJ4.7B
R360
4.7K
R359
1.8K
R395
47K
D353
1SS133
C392
0.001
C387
0.022
SO301
ANTENNA
TERMINAL
FM 75 OHMS
C394
47/16
R382
150
R381
10K
R380
1.5K
C393
1/50
Q362
KRA107 M
C371
1/50
R361
470
C372
1/50
R362 470
C374
0.027
C373
0.027
C369
27P
C343
33P
C362
3.3/50
C344
@
33P
RT34
56K
CT37
0.022
QT21
KTC3199 GR
RT33
56K
RT32
10K
L341
D303
1SS133
C301
0.001
D304
1SS133
2
1
C366 0.001
C361
@
0.022
C363 0.022
C399
0.022
C398
100/10
C353
@
0.022
CF351
C354
@
0.022
C356
0.001
R354
4.7K
C358
1/50
R355
3.3K
C357
2.2/50
CT43
10/16
ZDT21
MTZJ4.3B
RT48 390
RT49
390
R371 1K
R374 1K
R372 1K
C370
1/50
C355
22P
ICT21
@
LC72720
@
RDS DECORDER
CT23
10/16
L352
100
µ
H
R351
@
5.6K
IC303
LA1832
FM/AF IF MPX.
C352
@
10/16
C350
@
0.022
C351
@
0.022
R353
270
C342
0.022
R358
8.2K
VR351
10K(B)
C364 10/16
C365 0.022
C368
1/50
R356
1K
R357
470K
X351
456kHz
Q354
KTC3199 GR
MUTING
Q353
KTC3199 GR
R367
1K
C375
3.3/50
R365
10K
R368 33K
R366 10K
L351
100
µ
H
R377
47K
C385
0.01
X352
4.5MHz
C381
12P(CH)
C382
15P(CH)
C386
330P
R379
2.2K
L354
CNP301
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
10
9
8
7
6
5
4
3
2
1
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
CNP303
12
11
10
9
8
7
6
5
4321
CNSF13
P30 1-E
TO MAIN PWB
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
FM FRONTEND
FE301
8
7
6
5
432
1
FM SIGNAL
AM SIGNAL
TP
TP
TP
MW+B
FM
TP
VDDA
XIN
VDDD
CE
(UJ)
MO/ST
ST IND
MO/ST
MW
FM
SYR
CL
DO
DI
VSSD
XOUT
T2
T1
CIN
MPXIN
VSSA
FLOUT
VREF
F OUT
IF OUT
VCC
VT
GND
GND
GND
ANT
VSS
AOUT
AIN
PD
VDD
FM IN
AM IN
DO
CL
DI
CE
X IN
X OUT
IF IN
REG
AM IF IN
GND
SD
STEREO
FM DET
VCC
IF OUT
PHASE
PHASE
(FM/AM)
L–CH OUT
R–CH OUT
MPX IN
MPX VCO
FM/AM OUT
VSM
AM LOW CUT
AM RF IN
AM OSC IN
FM AFC
AM OSC OUT
AM MIX OUT
FM IF IN
BALUN
MW/LW LOOP
ANTENNA
2
3
1
FM MUTE
LEVEL
1
2
3
+B
T4
T5
T3
T7
T6
SYNC
RDS-ID
MUTING
+B
D GND
CLK
DO
CLK
DO
TUN MUTE
CE
DI
DI
SD
SM
SM
A+12V
A GND
A GND
L
R
R
+B
+B
1
2
3
1
23
+B
1
2
3
AM IF
MW
TRACKING
LW
TRACKING
LW ANT.
MW OSC.
MW ANT.
LW OSC.
LW BAND
COVERAGE fL
MW BAND
COVERAGE fL
TUNER PWB - E
0V
0V
0V
(0.7V)
0V
0V
0V
0V
0V
0V(0.7V)
0V(0.7V)
(9.2V)
(0V)
0.8V
0V
(11.3V)
11.3V
11.2V (1.1V)
4.8V
4.1V
0V
0V
3.5V (0V)
0V
(2.9V)
10.7V (0V)
10.5V (11.4V)
11.3V
0V
0V
0V
0V
0.7V (0V)
0.7V(0V)
2.5V(0V)
5V(0V)
1.8V(0V)
0.8V
0V
4.7V
2.6V
2.6V
0.8V
2.3V
2.1V
1.2V
3.5V
3.5V
3.5V
4.7V
4.8V
4.4V
0V
2.1V
4.7V
2.1V
2.1V
2.6V
3.64V
1.3V
2.0V
1.8V
3.2V
3.2V
0V
1.7V
1.1V
2.1V
9
8
7
6
5
4
3
2
1
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
PIN NO.
VOLTAGE
IC303
2.1V
2.1V
FM(ST)
AM
0V
0V
0V
0V
0V
4V
0V
0V
0V
5V
2.6V
0V
0V
0V
0V
2.5V
2.5V
2.5V
2.5V
5V
0V
0V
2.4V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
9
8
7
6
5
4
3
2
1
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
PIN NO.
VOLTAGE
ICT21
0.3V
0.7V
0V
4.1V
4V
0V
0V
FM(ST)
AM
0.3V
0V
0V
4.8V
3.6V
0.5V
0.3V
4.8V
4V
2.4V
0V
0V
0V
11.2V
0V
0V
9
8
7
6
5
4
3
2
1
11
10
PIN NO.
VOLTAGE
IC302
FM(ST)
AM
11V
0V
2.4V
0V
2.1V
0.9V
4.8V
2.4V
0V
0.5V
0V
0V
0.9V
0.6V
2.4V
20
19
18
17
16
15
14
13
12
22
21
PIN NO.
VOLTAGE
IC302
FM(ST)
AM
0.9V
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