DOWNLOAD Sharp CD-C420H Service Manual ↓ Size: 1.33 MB | Pages: 19 in PDF or view online for FREE

Model
CD-C420H
Pages
19
Size
1.33 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio / System
File
cd-c420h.pdf
Date
PREV: Sharp CD-C413H (serv.man4) Service Manual / Technical Bulletin

Sharp CD-C420H Service Manual ▷ View online

– 13 –
CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
 Figure 13 BLOCK DIAGRAM (1/3)
1
2
3
4
5
9
8
6
7
20
12
13
24
25
30
31
32
22
34
35
36
10
11
27
26
28
29
PU-IN SW
XL1
XIN
LD0
FIN2
JP–
CV+
SLC
SL1
FIN1
E
F
TO
FD
SPO
SP
SLD
SL–
SL+
DRF
CL
DAT
CE
VCC1
6
+5V
PICKUP IN
SW4
FOCUS COIL
TRACKING COIL
M1
SPIN
MOTOR
M
M
M2
SLIDE
MOTOR
PICKUP UNIT
9
IC2
LC78623U
SERVO/SIGNAL
CONTROL
+B1
IC5
M56748FP
DRIVER
IC1
LA9240M
SERVO AMP.
6
1
9
5
+B1
+12V(+B5)
( TO IC401 )
RES. CQCK. COIN
SQOUT. RWC. WRQ
~
~
~
CL, DAT, SELIAL CONTROL/CE
Q93
Q91
SL+. SL–. DRF
7
3
9
8
7
6
5
4
3
2
1
GND (D)
MECHA UP
GND (D)
DISK NO.
OPEN/CLOSE
GND (D)
M–
M+
GND (M)
9
8
7
6
5
4
3
2
1
CNP10
M
+5V
62
64
45
36
23
43
37
38
39
40
24
25
10
10
26
58
53
10
12
20
32
40
43
44
53
52
51
54
31
30
29
23
27
16
15
41
44
Q1
+5V
Q81
+5.6V (B1)
REGULATOR
TO MAIN SECTION
IC91
TA7291S
LOADING MOTOR
DRIVER
XOUT
EFMO
EFMIN
CLV+
JP–
CONT2
CONT1
RCHO
RVSS
LVSS
LCHO
VVDD
VDD
LVDD
RVDD
XVDD
SW1
OPEN/CLOSE
SW2
MECHA UP
SW3
DISC No.
M3
LOADING
SOLM1
TO DISPLAY
SECTION
CNS10
CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
– 14 –
 Figure 14 BLOCK DIAGRAM (2/3)
TAPE
VIDEO/AUX
TUN
CD
1
3
4
5
17
18
13
6
7
16
14
12
19
10
23
24
8
9
1
3 4 5
1
7
7
6
20
12
22
15
16
11
21
17
13
10
1
5
4
2
7
3
8
6
8
9
17
14
15
12
10
21
22
23
24
13
18
16
5
4
3
2
6
2
4
20
21
R-CH
L-CH
PB HEAD
L NF
L (T1)
R (T1)
L (T2)
R (T2)
R NF
H/N
T1/T2
POP REDUCE
L REC
R REC
R NF
REC
L NF
P. B.
REC
L-CH
R-CH
REC/PB
HEAD
ERASE
HEAD
OCS
BIAS
REF
ALC
T1/T2
X352
4.5MHz
OSC
STEREO
ST
ST
AM IF
FM IF IN
VT
FM IN
AM IN
FM
+B4
AM
TRACKING
AM BAND
COVERAGE
PLAYBACK&RECORD/
PLAYBACK AMP.
IC101
AN7345K
L
R
P. B
FE301
FM FRONT END
420H: S0003AW
405W: S0005AW
Q128
L104
BIAS
Q106
Q103
~
P.B
REC
AC BIAS
Q107
Q108
Q111
Q109
Q110
T1/T2
MUTING
Q121
Q122
REC
+B4
L
R
CE
DI
CL
DO
T351
IC302
LC72131
PLL CONTROLLER
FM
TAPE 1
TAPE 2
R
L
SWITCHING
SWITCHING
SWITCHING
SWITCHING
SWITCHING
FM IF
CF302
CF301
420H ONLY
Q301
VCC
SO301
ANTENNA
TERMINAL
AM LOOP
ANTENNA
L311
BALUN
Q360
+B4
Q361
VR351
FM MUTE LEVEL
FM OSC
IF OUT
AM RF IN
AM OSC IN
AM OSC OUT
AFC
SD
FM/AM
MUTIN
+B6
+B4
REGURATER
VOLTAGE
L-CH
R-CH
L354
420H ONLY
+B6
MONO/
MIX
OUT
REG
FM
DET
Q124
Q126
SWITCHING
BIAS
X351
CF351
IC303
LA1832
FM/AM IF
T302
AM AMT.
FROM CD SECTION
SO
CD-C405W
BLOCKMAIN
420H ONLY
405W ONLY
420H ONLY
420H ONLY
FM
AM
FM/AM
ANTENNA
TERMINAL
– 15 –
CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
 Figure 15 BLOCK DIAGRAM (3/3)
13
4
3
11
MUTE
L
R
R
L-OUT
R-OUT
9
2
5
12
R-IN
L-IN
7 VCC
14
NF
8
+12V (ANALOG)
+B4
+12V (MOTOR)
+B5
OUT
IC801
LA4551
POWER AMP.
+B4
PRESET GRAPHIC EQUALIZER
VDD
X-BASS
LVREF
RVREF
VSS
AVSS
GRAPHIC EQUALIZER
VOLUME
58
55
L
R
R
R
L
L
L
TAPE
VIDEO/AUX
TUNER
CD
Q942
VOLTAGE
REGULATOR
VOLTAGE
REGULATOR
VOLTAGE
REGULATOR
UN-SWITCHED
+B1
+
–
SO801
FRONT SPEAKER
TERMINAL
CD-C420H
ONLY
J801
HEADPHONES
VREF
TO CD SECTION
+5.6V
+5.6V
+B1
Q941
Q943
Q952
Q953
IC401
LC75394E
AUDIO PROCESSOR
23
16
33
17
32
19
30
21
28
14
35
56
50
26 27
12
37
11
38
10
39
63
24 25
57
CL
DI
CE
25
27
29
30
33
34
35
36
37
38
39
40
42 41
43
44
45
46
47
48
49
50
51
43
52
53
54
55
56
58
59
60
65
70
57
24
23
22
21
20
19
18
17
80
72
71
16
15
14
13
12
11
10
9
~
6
1
~
~
~
7 8
1
RX701
3
2
SYSTEM STOP
DO
DRF
DI
DE
CL
RESET
XL702
4.19MHz
AVDD
AVREF
VDD
+B2
KEY
SW701
SW725
TO POWER SECTION
+B5
PHM1
RESET
Q708
Q709
ZD701
MEMORY
BACK UP
+B2
3
2
1
~
33
30
31 32
Q701
+B2
+B1
UNSWITCH
FL701
DISPLAY
~
61
64
~
POWER
T.F
220V
127V
110V
SW961
VOLTAGE
SELECTOR
230-240V
AC POWER
SUPPLY CORD
405W:AC 110/127/
           220/230-240V
           50/60Hz
420H:AC 230V
           50Hz
VOLTAGE
REGULATOR
Q971
D971
D973
~
D961 ~ D964
ZD972
Q707
IC701
IX0191AW
SYSTEM CONTROL
MICROCOMPUTER
TO CD SECTION
TO CD SECTION
TO CD SECTION
TO CD SECTION
+
–
–
+
SO802
REAR SPEAKER
TERMINAL
D965 ~ D968
9
43
6
40
49
64
8
44
5
41
7
45
4
42
CD PUIN
CD SL+
CD SL–
VDD
TAPE SOL
TAPE MOTOR
TAPE MECHASTOP
TAPE FP
T1 RUN PLSE
SWM5
CAM
SWM4
F. A. S
SWM3
FOOL PROOF
L-CH INPUT
R-CH INPUT
T2 RRUN PLSE
CD UP DOWN/DISC NO
CD DSP RES
CD T/T OPEN/CLOSE
RESET
CD DSP SQOUT
CD DSP COIN
CD DSP RWC
CD DSP CQCK
CD DSP WRQ
T1/T2
TAPE REC
TAPE BIAS
14
15
ST FM
Q354
MUTING
+B6
L-CH
R-CH
MONO/ST
Q353
SO401
F962
T2.5A 
L 250V
T1.6A 
L 250V
F963
CD-C405W
ONLY
CD-C420H
ONLY
CD-C405W/CD-C420H/CP-C410/CP-C405/CP-SR421
– 16 –
Figure 16  WIRING SIDE OF P.W.BOARD (1/4)
A
B
C
D
E
F
G
H
1
2
3
4
5
6
• The numbers   
1 
  to  
12 
 are waveform numbers shown in page 30.
TO TAPE MECHANISM PWB
P18 1-A
CNPM1
CNSM1
RD
1
2
3
4
5
6
7
8
9
10
11
12
WH
GY
WH
GY
WH
GY
WH
TO SENSOR PWB
CNS10
TO TAPE MECHANISM
CNS101
HEADPHONS PWB-A3
DISPLAY PWB-A2
P19 7-H
P18 1-H
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
CNP101 3
2
1
STOP
XL701
8
1
BIM01
10 9 8 7 6 5 4 3 2 1
R773
R771
R759
C717
R99
R765
R769
R775
R98
L700
R760
R799
R711
R603
C718
R726
R727
R703
R705
R707
R709
R731
R743
R735
R702
R724
R708
R714
R748
R746
R706
R712
R704
R747
R745
C704
C703
C701
R761
C705
R722
R772
R717
R719
R721
R713
R715
R716
R718
R720
R723
R725
R762
R766
C708
R779
R734
R741
R781
R780
R776
R786
R785
R798
R795
R767
R782
R737
R730
R754
R732
R733
R757
R756
R751
R750
R738
R774
R70
R755
R739
R752
R740
R744
R797
R742
R753
420H
ONLY
R96
R788
C95
R54
R30
R25
R24
R
C51
C46
C54
C56
C55
C57
R77
R78
R154
R141
C58
R152
R137
R135
C129
R71
R72
R79
R153
C139
R139
R145
C131
R131
C119
R125
C127
R123
R121
C117
C123
C113
C111
R101
C101
R701
Q701
C710
C711
FL701
RX701
Q706
D702
R758
C706
Q705
D709
D708
CNP10
C91
C92
R97
IC91
D91
Q91
R95
Q93
C715
R789
R792
R793
R749
C702
R794
L701
D701
Q707
D703
C707
Q708
Q709
ZD701
C709
D704
D706
D705
R763
R777
R836
420H ONLY
R835
C843
C844
C855
R764
R133
R172
R768
R736
D5
D7
R49
SW711
R82
C96
C43
R778
R88
R87
R61
R783
C44
C18
C19
C81
C52
Q81
R86
L1
C
C59
XL1
C135
Q121
C
C141
C133
C128
C121
L107
405W:JUMPER
420:L107
420H
ONLY
C1
R
R1
R109
Q111
Q110
C453
C80
C454
R811
R809
IC701
5
10
15
20
24
25
30
35
40
41
45
50
55
60
64
65
70
75
80
IC701
5
10
15
20
24
25
30
35
40
41
45
50
55
60
64
65
70
75
80 1
SW717
POWER
TIMER/SLEEP
SW719
SW718
CLOCK
9
8
7
6
5
4
3
2
1
B
1
2
3
C
E
B
C
E
SW714
TUN-UP
SW715
TUN-DOWN
SW721
MEMORY/SET
1 2 3
B C E
PLAY
SW712
SW725
VIDEO/AUX
SW724
TAPE
SW710
UP
SW705
OP/CL
SW706
D-SKIP
SW709
REC/PAUSE
SW713
DOWN
TUN
SW723
CD
SW722
SW704
VOL-UP
SW703
X-BASS
SW702
VOL-DOWN
SW701
RANDOM/DEMO
1 2 3
B C E
B C E
1 2 3
IC5
1
5
10 15
18
36
35
30
25
20
19
E C B
B C E
1 2
1 2
5
10
15
16
17
20
25
30
32
33
35
40
45
48 49
50
55
60
IC2
HEADPHONES
JK801
420H
ONLY
6
5
4
11
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