DOWNLOAD Sharp CD-C491H (serv.man3) Service Manual ↓ Size: 3.14 MB | Pages: 29 in PDF or view online for FREE

Model
CD-C491H (serv.man3)
Pages
29
Size
3.14 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio / System / Diagrams
File
cd-c491h-sm3.pdf
Date

Sharp CD-C491H (serv.man3) Service Manual ▷ View online

CD-C491H
– 28 –
Figure 28 SCHEMATIC DIAGRAM (1/20)
A
B
C
D
E
F
G
H
1
2
3
4
5
6
• NOTES ON SCHEMATIC DIAGRAM can be found on page 22.
R46 560
FSS
LDO
DEF
CLK
CL
DAT
CE
DRF
VCC2
REF1
VR
LF2
PHI
BHI
LDS
10
1
8
9
12
R47
10K
C25
27P
R39
1K
C15
0.01 
R41
47K
R43
56K
R44
33K
R42
47K
R28 
10K 
R29    56K
C17 0.001
R30 6.8K
R20 1K
R19 1K
C3
1/50
R34
22K
R48
10K 
C36
100/16
IC3
M56748FP
FOCUS/TRACKING/SPIN
/SLED DRIVER
R11
6.8K
C6
0.033
R10
2.2K 
C5
0.033
C54 0.001
R8
15K
R9
100K
C16
0.0047
R27
39K
R25
1.5K
R23 10K
R24
47K
R17
33K
C29
4.7/50
C28
0.1
C14
0.01
C4
0.1/50
C35 
1/50
R1
10
C85
0.001
Q1
KTA1266  GR
R18
15K
C11
0.1
D3
RL104A
R35 220K
C21
0.0033 R36
220K
C20 47/16
C19 1/50
R33
1.2K
R32 10K
C32 0.01
C31
220/6.3
C30
0.1/50
C27 0.001
C24
2.2P
R40
5.6K
C26
0.033
R31 1.2K
C18
0.47/50
R16
3.3K
R15
12K
C10
180P 
C8
0.068
C7
0.1/50
R12
100
D4
RL104A
D2
RL104A
C9
0.047
R13
1K
R14
27K
C12 
0.1 
R2
1K
C1
47/16
C2 0.01
CNP3
R38
470
C23
0.0027
R45 4.7K
C22 
220P
IC1
LA9241M
SERVO AMP.  
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
C13 330P
R37 
82K 
D1
1SS133
R22
22K 
R21
22K
C34
0.33/50
C33
0.47/50 
1
2
3
4
5
1
2
3
4
5
CNP1
1
2
3
4
5
CNS1A 
CNS1B 
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
1 2 3 4 5 6
CNP12 
15
16
17
18
19
20
21
22 
23
24
25
26
27
28
29
30
31
32
33
34
35
36
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
CNS3A 
CNS3B 
CNP3A 
M
M2
SLIDE
MOTOR
M
M1
DISC
MOTOR
SW4
PICKUP
IN
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
CNP2
CNS2B 
CNS2A 







NC
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
NC
CD2PUIN 
CD2GND
LD
PD
TR–
TR+
FO–
FO+
SL2–
SP+ 
SP–
SL2+
GND 
HF
TP1
TE
TBC
JPCLO 
SLOF
SLOF
SLOF
FSC
FE1
FOSTA
FSC
EFBAL 
+  –
REF
JP
REF
REF
CV–
CV+ 
JP–
JP+ 
VREF
2FREQ 
LASER 
8/12CM
FSTA
S.Q.R 
FOSTA 
TOSTA 
LATOH 
FSTA
SLOF
CL
CE
DRF 
HFL 
DEF 
VCC 
THD 
GL
THDL
TGL1
VCR
VCR
VCR
VCR
FE1 
REF 
+
+
+
+
+
+
+
+
+
+
REF 
RF
REF 
DGND
SLI
VCC1
FIN2
2.4V
4.8V
4.2V
1.5V
2.4V
2.5V
2.5V
2.4V
2.5V
2.5V
2.5V
2.5V
2.4V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2V
2V
0V
0V
0V
0V
0V
2V
2.5V
2.5V
0V
4.7V
0V
2.5V
0V
0V
2.5V
2.5V
1.8V
1.8V
0V
0V
0V
0V
2V
2V
2.5V
2.5V
2.5V
4.7V
0.7V
0V
0V
2.5V
2.5V
2.5V
2.4V
2.5V
0V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.2V
2.2V
0V
0V
4.8V
4.8V
0V
0V
4.8V
0V
0V
1.5V
2.4V
2.5V
2.4V
0V
2.5V
2.5V
0V
0V
2.4V
4V
4V
0V
0V
4.8V
4.8V
2.5V
2.5V
1V
1V
2.2V
4.2V
0V
4.8V
FIN1
TB
TE–
TE
TESI
SCI 
REF 
REF 
REF 
REF 
REF
REF
REF
REF
REF 
REF
REF 
TO
REF 
JP
REF 
TH
TD
TD–
JP
TO
FD
GEN 
GEN
GEN
FD–
FA–
FA
FE
FE–
AGND
SP
SPI 
SPG
SP–
SPO 
SLEO
SLD
SL–
SL+ 
REF 
REF
REF
REF
OR
REF
RF
SLC
RFS–
RFSM
JP–
JP+
TGL
TOFF
TES
HFL
SLOF
CV–
CV+
– + 




RES(DSP)
WRQ(DSP)
RWC(DSP)
CQ  CK(DSP)
CO  IN(DSP)
SQ  OUT(DSP) 
+B
+B
+B
+
+
LD
VR
PD
GND
FO–
FO+
TR+
TR–
LD
VR
PD
GND 
FO–
FO+ 
TR+ 
TR–




LD




MON 
1M
2200P 
1M
2200P 
TR+
FO+
FO–
TR–
LT0H30M1
ACTUATOR
TO
CD  MOTOR  PWB-K
PICKUP  UNIT 
LD
  GND
+
+
+
+
– +
+
+
+
–+
–+
–+
–+
+
+
–+
+
+
+
+
R26 82K
7
6
5
4
3
2
LASER
DRIVE
– 29 –
CD-C491H
Figure 29 SCHEMATIC DIAGRAM (2/20)
7
8
9
10
11
12
• The numbers   
  to  
12 
 are waveform numbers shown in page 57.
11
C56
0.022 
Q52
KTC3203  Y
C52
100/16 
R64
22 
R66
330
ZD61
MTZJ4.7B
C50
0.022 
L61
0.82
µ
H
R55
150
C82
47/16
R82
6.8K 
D91
1SS133 
R86
2.2K
R87 10K
Q93
KRC102  M 
Q91
KTA1271  Y 
C37 0.022
R47
10K
C53 0.022
C46
100P
R80
6.8K
Q51
KRC107  M
C25
27P
R39
1K
R81
3.9K
R41
47K
R43
56K
R44
33K
R42
47K
R51
3.3M 
4
.7/50
C28
0.1
R88 1K 
0
XL1
16.934 MHz 
C41
12P
(CH)
C42
15P(CH)
R93
220
D81
1SS133
D82
1SS133
C83
0.022
R54
330
R83 3.9 
IC81
TA7291S
LOADING MOTOR DRIVER
R89 1K 
R90 1K 
R50
680
C39
0.047 
C40
0.047
R52
27K
R60
1K 
C26
0.033
R57 1K
R58 1K
R61 1K
R59 1K
C38
0.01
R63 1K 
R62 1K 
D4
RL104A
C57 
0.001 
C81
47/16 
C49 100P
C48 100P
C43
330/6.3
R53 1.2K
R38
470
C23
0.0027
C22 
220P
C47 100P
C45 100P
C44 100P
D1
1SS133
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
17
16
15
14
13
12
11
10
18 19 20 21 22 23
24 25 26 27 28 29 30 31
32
1
2
3
CNP11 
CNSF11
CNS99 
CNPR11
BI99








10












10
CNP10 


BIM05 
CNS5
SW3
DISC
NOMBER
SW2 
MECHA UP
SW1
OPEN/
CLOSE
M
M3  T/T
UP/DOWN
LOADING
SOLENOID 2
C51
100/16 
1 2 3 4 5 6 7 8 9
10 11 12 13 14
CNP12 
NC
NC
CD2LD2M+
M–
M+
SOL 
CD2LD2M–
CD2D2NO 
ND 
+7.3V 
TEST5
/CS
TA1 
SOL 
GND(M)
M+
M–
GND(D)
OPEN  CLOSE
DISC  NO.
GND(D)
MECHA  UP
GND(D)
+
– 
2Kx8
RAM
1BIT DAC
SERVO
COMMAND 
TES
HLF
V/P 
CLV2
CLV+
TEST2 
EFMIN
EFMO
VSS 
FR
VVDD
ISET
VVSS
PDO 
DEF1
CLV
DIGITAL SERVO 
EXTERNAL
OUTPUT
SYNC-DETECT
EFM DEMODULATE
SLICE LEVEL
CONTROL
VCO CLOCK
OSC  CONTROL
ERROR COERECT
FLAG CONTROL
OUT 
DIGITAL 
NC
NC
NC
NC
TOFF
TGL 
JP+ 
JP2 
PCK 
FSEQ
VDD 
CONT1 
CONT2 
CONT3 
CONT4 
CONT5 
EMPH
C2F 
TEST3 
DOUT
4FS
DIGITAL
FILTER 
TEST1
TEST4
MUTEL
LVDD
LCHO
LVSS
RVSS
RCHO
RVDD
MUTER
XVDD
XOUT
XIN
XVSS
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
SBSY
EFLG
SUB-CODE
µ
-COM
INTERFACE
TEST11
SBCK
SFSY
PW
FSX
WRQ
RWC
SQOUT
COIN
/CQCK
/RES
16M
4M
X-TAL
GENERATOR
0V
0V
2.5V
0V
0V
0V
0V
0V
0V
0V
4.8V
2.5V
0V
4.8V
0V
0V
4.8V
4.8V
4.8V
0V
0V
0V
0V
0V
0V
0V
0V
12V
12V
0V
6.4V
1V
0V
6.5V
6.5V
6.5V
2.9V
0V
12V
0V
0V
0V
4.8V
4.5V
0V
0V
0V
2.0V
4.5V
4.8V
4.8V
2.2V
2.1V
0V
0V
2.2V
2.5V
2.5V
0V
0V
4.8V
1.9V
0V
0V
0V
0V
+12V
CD-GND
+7.3V 
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
CNS10
LOCK
SENSOR  PWB
+5V 
+B
IC2
LC78622K
SERVO/SIGNAL
CONTROL
OP/CLOS 
UP/DOWN 
DISC  NO.
D2GND 
RES(DSP)
WRQ(DSP)
RWC(DSP)
CQ  CK(DSP)
CO  IN(DSP)
SQ  OUT(DSP) 
DRF  (ASP) 
SLD+
SLD–
PUIN  SW 
B
CD  SERVO  PWB-B
P30 1-C 
TO MAIN PWB
P30 1-D 
CNSF12
TO MAIN PWB
TO MAIN PWB
P34 2-C
VOLTAGE
REGULATOR
CD-C491H
– 30 –
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 30 SCHEMATIC DIAGRAM (3/20)
DG07
1SS133
DG08
1SS133
RF66
@
1K
RF78
@
1K
RF76
@
1K
RF74
@
1K
RF73
@
1K
RF71
@
1K
RF70
@
1K
RF69
@
1K
RF68
@
1K
RF65
@
1K
RF64
@
1K
RF63
@
1K
RF62
@
100 
RF61
@
1K
RF60
@
1K
RF54
@
1K
RF52
@
1K
RF51
@
1K
RF37 1K
RF38 1K
RF39 K
RF40 1K
RF44 1K
RF46 1K
RF49 1K
RF50 1K
RF36 1K
RF35 1K
RF34 1K
RF33 1K
RF32 1K
RF31 1K
RF03
 
1K
RF04
 
1K
RF05
 
1K
RF09 1K
RF10 1K
RF11 1K
RF12
 
1K
RF13 1K
RF14 1K
RF08 1K
RF07 1K
RF06 1K
RF81
1K
RF82
@
1K
RF83
@
10K 
RF84
@
1K
RF85
@
1K
RF86
@
1K
RF87
@
1K
RF88
@
1K
RF91
@
1K
RF92
@
1K
RF93
@
1K
RF94
@
1K
RF95
@
1K
RF96
@
1K
RF97
@
1K
RF59
@
1K
RF58
@
1K
RG55 1K
RF79
@
10K 
RF55
@
1K
RG05
10K 
RF80
1K
ICF01
IX0254AW
SYSTEM CONTROL
MICROCOMPUTER
CG56
0.022
XF01
CG05
15P
CG06 15P
RF17
0.0 
RG04
10K
RG08
@
10K 
RG07
@
10K 
RG06
@
10K 
CG57
47/25
RF28
 
1K
RF27
@
1K
RF25
@
1K
RF24
@
10K
RF23
@
1K
RF22
@
1K
RF21
@
1K
RF20
@
1K
RF19
@
1K
RF26
@
1K
RF29 1K
RG56
@
1K
RF01
 
1K
RF02
 
1K
RF99
@
1K
RG95
470K
QG92
KTC3199  GR
RG96
10K
RG94
10K
RG24
10K 
RG38
100K
RG25
@
10K 
RF30
1K
RG16
47K 
RG19
47K
RG26
10K
RF67
@
1K
RG11
10K
RF98
@
1K
RF48 1K
RG20 10K 
RG21 10K 
RG22 10K 
RG17
10K
RG15
10K
CH29
0.022
CH28
0.022
CH15
0.22/50
RH16
470K
DH11
1SS133
CH13
330P
RH14
560K
RH15
33K
CH18
0.22/50
RH24
470K
DH12
1SS133
RH20
1.5K
CH17
0.047(ML)
RH21
560K
RH22
33K
CH16
1/50
CH21
0.22/50
DH13
1SS133
RH29
470K
RH25
1.5K
CH20
0.015 
RH26
560K
RH27
33K
CH19
0.47/50
CH24
0.22/50
DH14
1SS133
RH34
470K
RH30
1.5K
CH23
0.0047
RH31
560K
CH22
0.1
(ML)
RH32
33K
CH27
0.22/50
DH15
1SS133
RH39
470K
RH35
1.5K
CH26
0.0012
RH36
560K
CH25
0.027
(ML)
RH37
33K
ICH11
NJM4558M
MOTOR  DRIVER
RH11
150K
RH12
1K
CH10
47P
RH13
150K
RH17
1.5K
DH16
1SS133
DH17
1SS133
DH18
1SS133
DH19
1SS133
DH20
1SS133
RF47 1K
RF53
@
1K
CH30
0.0056
(ML)
RF75
@
1K
RF77
@
22K 
RF42 1K
RF43 1K
CG08
0.001
PRE  R-CH 
PRE  L-CH 
REC  R-CH 
REC  L-CH 
GND(A)
VSS
VDD
PL4 
PL0
PL1
PL2
PL3 
PC2
PC3
PC1
PC0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
PA6
PA5
PA3
PA4
PA2
PA7
PB0
VDD1
CF2 
CF1 
VSS1
P74 
P75 
P17 
P16 
P34 
P35
P00
P01
P02
P03
P04(PCCL)
P30 
P31
VSS3
VDD3
P32
P33 
MIC_DET
9K/10K
SCK
SO1
SCK1
SO0 
Si0 
AN0 
AN1
AN2
AN3
AN4
AN5
AN6
AN7
INT1
INT2
INT3
SI1 
INT0
GND(
µ
-CON)
GND(A)
+12V(A) 
+4V(
µ
-CON)
TAPE_SOL
HIGH_SP 
TA_BIAS 
PB_MUT
TA_T1/T2
REC_MUT 
V1/V2
AC3_SCK
AC3_SO
AC3_SIN
AC3_SS
AC3_RES
DGTL2
DGTL1
CD_O/C_SW
CD_U/D_SW
CD_DNO_SW
H/P  SW
–15V
+12V(A) 
GND(A)
AUTO_SCAN
VSS 
VDD 
FR  SPEED(M) 
TA  MOTOR
CAM_SW
T2_CRO  S
T1_CRO  S
T2_B-FP  S
T2_A-FP  S 
PUIN
RES(MAIN) 
TA_FR  SPEED
M2GND 
SO
AC32SO
VOLT_SW 
AD  RES
SP_CONF 
POWER 
VR  ST 
VR  CLK
VR  DATA
FUNC  B
FUNC  A
S.W.MUT
CENT_MUT
REAR_MUT
SYS_MUT 
TUN_MUT 
CL
CE1 
TUN_SD
FRNT_RLY
FAN  CONT
CENT_RLY
REAR_RLY
S.W.RLY 
GND(CD2)
GND(CD1)
GND(D)
+7.3V(CD)
+12V(M) 
+4.6V(D)
+4V 
AUX
L-CH  OUT
GND(A)
R-CH  OUT
L-CH  OUT
GND(A)
R
C
H
OUT
VIDEO2
VIDEO1  IN 
P34 2-G
TO  PRE  SECTION
AUX  2 
AUX  1 
(1/2) 
8
4
1
3
2
– 
(2/2) 
6  – 
16KHz
SPE-1
AMP 
QS_AC 
QS_MO
DO(TU)
DI(TU,VR,PR)
L
CL
CE1
MUTE
R
DRF
RES
CQCK
SQOUT
COIN
WRQ
RWC
SLD+
SLD–
OP/CL
PUIN
U/D
D2NO
RES 
RWC 
CFWU02
94
IC
CLK2
DO
DI
SP_4K
SP_1K
63Hz
SPE-2
250Hz
SPE-3 
1KHz
SPE-4
4KHz
SPE-5
TAPE  L
TAPE  R
TUN  R 
TUN  L 
AUX  1 
QS_SPRED
VOICE-C 
TA_R/P
TA_PB-EQ
SD
DATA1 
RESET 
COM1
+12V(M) 
GND(D)
GND(D)
STB 
SCK1
+4.6V(D)
1
CNPF01
2
3
4
5
6
7
8
9
10
CNSD01
P40 1-C
TO DISPLAY PWB 
RES 
DAT
STB
SCK 
COM 
+B
+B
+B
+B
+B
+B
+B
1
1
2
2
3
3
BIF11 
CNSF11
+12V(M) 
GND(CD) 
+7.3V(CD) 
CNP12 
RWC
WRQ
COIN
SQOUT
CQCK
RES
DRF
D_GND
SLD+
SLD–
PUIN
DISC_NO 
UP/DOWN 
OP/CL 
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
13
13
14
14
BIF12 
CNSF12
P29 7-H
TO  CD  SERVO  PWB 
P29 12-C
TO  CD  SERVO  PWB
CNP11
RF41 1K
BEAT  CUT
+B
+B
+B
8
18
85
80
18
84
+B
+B
+B
+B
–B
–B
–B
+B
+B
+B
+B
1
BIF13 
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
1
CNSF13
SM
SM
R-CH
L-CH
TUN  MUTE
SD
GND(A)
+12V(A)
DI
CE(CE1)
DO
CL
GND(D)
CNP303
P39 12-C
TO  TUNER  PWB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
54
55
23
24
25
26
27
TA_T1/T2
PB_MUT
PRE  L-CH
HIGH_SP
PRE  R-CH
GND(A)
+12V(A)
TA_BIAS
REC  L-CH
REC  R-CH
TA_R/P
REC_MUT
BEAT_CUT
TA_PB-EQ
GND(D)
TA_MOT_SW
M  +12V
TA_SOL
T2_A_FP
TA_CAM_SW
M_GND
T1_RUN
T2_B_FP
T2_RUN
T1_CrO
2
T2_CrO
2
P33 12-B
TO MECHA SECTION 
P33 12-E
TO DECK SECTION
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
37
43
42
41
40
39
38
50
49
48
47
46
45
44
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
10 0 
DEM1
DEM0
P06 
P07 
P05 
DS_RES
CQCK
SLD–
SLD+
COIN
SQOUT
SP_16K
TUN_SM
POSISTOR
T1_RUN
SP  LEVEL
SYS_STOP
SP  PROT
T2_RUN
SP_250Hz
SP_63Hz
30
PA0 
PA1
51
PC5 
PC4
PF3
PF2
PF1
PD2
(DO)PD3
PD4
(DI)PD5
PD6
PD7
PE0
PE1
PE2
PE3
PE4
PE5
PE6
PE7
PF0
PD1
PD0
PC7
VSS2
VDD2
PC6
PF7
PF6
PF4
PF5
80
PL6 
PL5 
+B
– 31 –
CD-C491H
Figure 31 SCHEMATIC DIAGRAM (4/20)
7
8
9
10
11
12
DG08
1SS133
RF37 1K
RF38 1K
RF39 K
RF40 1K
RF44 1K
RF46 1K
RF49 1K
RF50 1K
RF36 1K
RF35 1K
RF34 1K
RF33 1K
RF32 1K
RF31 1K
RG55 1K
CG56
0.022
CG04
0.01
DG05
1SS133
RG37
1K
RG36 3.3K
QG01
KRC102M
QG03
KTC3199GR
RG32
100 
ZDF01
MTZJ3R3A
RG31
1K
DG02
1SS133
DG04
1SS133
CG03
3.3/50
CG02
0.01
QG02
KTC3199GR
RG34
10K
RG30
150
RG29
150
CG01
470/10
RG35
1K
DG03
1SS133
RG33
10K
LG01
2.2
µ
CG57
47/25
RF48 1K
RG20 10K 
RG21 10K 
RG22 10K 
RG17
10K
RG15
10K
RG39
82
RF47 1K
RF42 1K
RF43 1K
ND(
µ
-CON)
RESET
POINT
4V(
µ
-CON)
PE_SOL
GH_SP 
_BIAS 
_MUT
_T1/T2
C_MUT 
+4V 
SPEED(M) 
MOTOR
M_SW
CRO  S
CRO  S
B-FP  S
A-FP  S 
–15V
+12V(A) 
R  OUT 
L  OUT 
C  IN(C  OUT) 
SL  IN(LS  OUT)
SR  IN(RS  OUT)
SW  IN(SW  OUT) 
CD  GND(D1)
GND(D)
CD  GND(D2)
+7.3V(CD) 
+12V(M) 
+4.6V(D)
LT_SW 
P34 2-G,P35 9-G
TO PRE  SECTION 
GND(D)
VR  CLK
VR  DATA
VR  LA  TCH 
FUNC  A
FUNC  B
NT_RLY
  CONT
+4V 
CONTROL 
AUX  2 
L-CH  OUT
GND(A)
R-CH  OUT
L-CH  OUT
GND(A)
R-CH  OUT
VIDEO2  IN 
VIDEO1  IN 
P34 2-G
TO  PRE  SECTION
AUX  2 
AUX  1 
+5V(AC32A)
CD  GND(D2)
CD  GND(D1)
+7.3V(CD) 
GND(M)
VGND
GND(D3) 
GND(D4) 
+5V(AC32B)
VR  DI 
CLK2
TAPE  L
TAPE  R
AUX  1 
_R/P
_PB-EQ
RF41 1K
AT  CUT
+B
+B
+B
+B
+B
+B
–B
RESET 
2 3 
+B
+B
+B
+B
+B
+B
+B
+B
–B
–B
28
18
19
27
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
66
69
59
60
61
62
63
18
19
64
56
57
58
54
55
47
48
49
50
51
52
53
46
3
7
POWER 
VOLT  SW 
SP  PROT
POSISTOR
H/P  SW
SP  LEVEL
FAN  CONT
FRNT  RLY(1) 
+4.6V(D)
GND(D)
SW  RLY(4) 
REAR  RLY(3) 
S-MUTE
CENT-MUTE 
REAR-MUTE 
SWF-MUTE
AMP  CONT
+12V(A) 
GND(A)
–15V
+12V(M) 
GND(A)
+12V(A) 
IN(R) 
IN(L) 
RR  IN 
QS_SPRED
OUT(L)
OUT(R)
RL  IN 
C  IN
RL  OUT
RR  OUT
C  OUT 
QS_MO 
QS_AC 
+B
+B
+B
+B
+B
–B
–B
+B
–B
+B
+B
+B
67
68
69
70
71
72
73
54
55
58
56
57
76
27
76
57
86
18
87
58
55
54
77
28
19
18
56
AC3-SW-CHOUT 
AC3-RS-CHOUT
AC3-LS-CHOUT
AC3-C-CH  OUT
AC3-R-CH  OUT
AC3-L-CH  OUT
SPEC  ANA
–15V
+12V
AGND
AGND
RT  IN 
LT  IN 
TUN  L
TAPE  L
AUX  1
AUX  2
TUN  R
TAPE  R
AUX  2
AUX  1
78
15
80
81
82
17
84
85
SR  IN(RS  OUT) 
SL  IN(LS  OUT) 
C  IN(C  OUT) 
SW  IN(SW  OUT) 
LT  IN 
RT  IN 
V-SW(V1/V2) 
L  OUT(LIN)
R  OUT(RIN)
AGND
1
CFWU01
2
3
4
5
6
7
8
9
10
+B
–B
+B
1
CFWU02
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
+5V 
A+12V 
AGND
VGND
+5V(AC3_A) 
+5V(AC3_A) 
(AC3_B) 
A-15V
GND(D3) 
GND(D4) 
SO
DGTL1 
SP  CONF 
DEM0
DEM1
SCK 
AC3_RES 
SI
AD  RES
SS
DGTL2 
FWA01 
P47 8-H
TO  DOLBY  PWB
CFWA01
20
FWA02 
P46 5-H
TO  DOLBY  PWB
CFWA02
10
+B
–B
AC3-C-CH  OUT 
AC3-L-CH OUT
AC3-R-CH OUT
AC3-LS-Ch OUT 
AC3-RS-CH OUT
AC3-SW-CH OUT 
76
57
56
58
55
54
P34 4-G
TO  PRE  SECTION
81
18
85
80
18
84
MAIN  PWB-A(1/5)
FM  SIGNAL 
PLAYBACK  SIGNAL
RECORD  SIGNAL 
P38 2-H
TO  QSOUND  SECTION 
CENT  RLY(2) 
P36 1-G
TO VOLUME SECTION
P37 12-D
TO VOLUME SECTION
Page of 29
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  • Here you can View online or download the Service Manual for the Sharp CD-C491H (serv.man3) in PDF for free, which will help you to disassemble, recover, fix and repair Sharp CD-C491H (serv.man3) System. Information contained in Sharp CD-C491H (serv.man3) Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.