DOWNLOAD Sharp CD-C421H (serv.man4) Service Manual ↓ Size: 1.73 MB | Pages: 17 in PDF or view online for FREE

Model
CD-C421H (serv.man4)
Pages
17
Size
1.73 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio / System / Schematic diagrams and PWB layouts
File
cd-c421h-sm4.pdf
Date
PREV: Sharp CD-C421H (serv.man3) Service Manual

Sharp CD-C421H (serv.man4) Service Manual ▷ View online

– 33 –
CD-C421H / C411H
7
8
9
10
11
12
Figure 33 SCHEMATIC DIAGRAM (7/11)
R981
330
(1/2W)
1
5
1
5
R982
330 (1/2W)
CNS901
S0901
AC POWER
INPUT SOCKET
AC 230V/50Hz
L901
CORE
R972
4.7
CNP901
C948
3300/25
421H ONLY
421H ONLY
D911
RL104A
C908 2.2
F901
T3.15A L 250V
F902
T1.6A L 250V
D905
RL104A
D908
RL104A
C903
47/50
R902
12K
D904
D906
RL104A
D910
RL104A
C909
0.047 (ML)
ZD901
MTZJ6.2A
C906
100/50
C901
100/35
D903
D902
R973
270 (1/2W)
C979
0.1
(ML)
C977
0.1
(ML)
C988
0.047
(ML)
C986
0.022
(ML)
C984
0.022
(ML)
R984
3.3
C989
0.022
(ML)
C987
0.022
(ML)
R985
3.3
C990
0.047
(ML)
R971
4.7
R986
2.2:411H
3.3:421H
R983
2.2:411H
3.3:421H
C985
0.047
(ML)
C991
10/50
(N.P.)
C921
0.022
C924
0.0012:411H
0.001:421H
C923
0.0012:411H
0.001:421H
C925
0.0033
C926
0.0033
C983
0.047
(ML)
C922
0.022
D907
RL104A
D901
D901-D904
RL203F:411H  
1N5402M:422H
R901
220
C902
47/50
R903
220
R905
3.3K
R904
100
ZD902
MTZJ30B
C907
2.2
C904
47/50
R906
2.2
Q901
KTA1266 GR
C905
100/50
C910
0.047 (ML)
C949
2200/50
JK961
HEADPHONES
D909
RL104A
1
2
3
4
5
6
7
1
2
3
4
5
6
7
1
2
3
4
5
6
7
FW902
PT901
POWER TRANSFORMER
+B
GND
GND
+B
VF1
–VP
VF2
AC POWER CORD
TO FRONT SPEAKER
MIN 5.4 OHMS:421H
MIN 8 OHMS:411H
TO REAR PEAKER
MIN 16 OHMS
R-CH
L-CH
R-CH
L-CH
+
+
+
+
TF901
CHASSIS
GND (D)
HASSIS
ND (D)
LUG962
(258)
UG961
258)
(AUDIO)
(AUDIO)
(PWR)
(PWR)
R907
2.2
SO961
SPEAKER TERMINAL
POWER PWB-B
HEADPHONE PWB-A4
R975
270
(1/2W)
–
–
–
–
L963
2.2mH
L961
0.29
µ
H
L962
0.29
µ
H
When Servicing, pay attention as the area enclosed by this line
(              ) is directly connected with AC main voltage.
CD-C421H / C411H
– 34 –
A
B
C
D
E
F
G
H
1
2
3
4
5
6
Figure 34 SCHEMATIC DIAGRAM (8/11)
• NOTES ON SCHEMATIC DIAGRAM can be found on page 16.
TO MAIN 
P28
MAIN_SCK
MAIN_STB
41 40
37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
9 8 7 6 5
2 1
+B
+B
80
73
74
75
76
77
78
79
72
71
70
69
68
67
66
65
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
–28.4V
4.8V
–28.4V
DISPLAY PWB-A2
–B
–B
TUN_CLK
TUN_DI
TUN_DO
TUN_CE
F
F
F
F
G11
G10
G09
G08
G07
G06
G05
G04
G03
G02
G01
S01
S02
S03
S04
S05
S06
S07
S08
S09
S10
S11
S12
S13
S14
S15
S16
S17
S18
S19
S20
S21
S22
TUN_SM
TUN_SD
TUN_MUTE
7G
8G
S0
9G
10G
S1
S2
S3
S4
VLOAD
S10
S5
S6
S7
S8
S9
S13
S14
S15
S16
S17
S18
S19
S20
S21
VDD
VSS
REMOCON
SYS STOP
POWER
AR_P
IC
P01/INTP1
P02/INTP2
P03/INTP3/CI0
P71
P72
P70
P00/INTP0/TI0
P16/ANI6
P17/ANI7
AVSS
P74
RESET
P24/BUSY
P25/SI0/SB0
P27/SCK0
P23/STB
P22/SCK1
P21/SO1
P20/SI1
P90/FIP2
P80/FIP0
P81/FIP1
P91/FIP3
P92/FIP4
P93/FIP5
P94/FIP6
P113/
FIP21
P114/ FIP22
P115/ FIP23
P127/ FIP33
P116/ FIP24
P117/ FIP25
P120/ FIP26
P121/ FIP27
P122/ FIP28
P123/ FIP29
P124/ FIP30
P125/ FIP31
P126/ FIP32
VLOAD
P97/
FIP9
P96/
FIP8
P95/
FIP7
P105/
FIP15
P104/
FIP14
P102/
FIP12
P100/
FIP10
P101/
FIP11
P103/
FIP13
P112/
FIP20
P110/
FIP18
P106/
FIP16
P107/
FIP17
P111/
FIP19
VDD
P26/SO0/SB1
P73
P30/TO0
VDD
MAIN_SO
MAIN_SI
–B
–B
3G
2G
1G
0G
6G
5G
4G
CLEAR
RESET
S11
S12
FW702
5
6
7
8
9
FL701
FL DISPLAY
R764
1K
R766 1K
R723     1K
IC701
IX0223AW
SYSTEM MICROCOMPUTER
C701    220/6.3
R728     1K
R725     1K
R716     1K
R719     1K
R724     1K
R727     1K
R721     1K
R722     1K
R718     1K
R717     1K
R726     100
R720     1K
R715
100K
Q701
KRC107 M
R729
1K
R794
33
C717
47/16
C718
1/50
C719
1/50
– 35 –
CD-C421H / C411H
Figure 35 SCHEMATIC DIAGRAM (9/11)
7
8
9
10
11
12
TO MAIN PWB(1/3)
P28 5-B
TO MAIN
PWB(1/3)
P28 1-B
TO MAIN
PWB(3/3)
P32 2-G
+B
+B
+B
3
2
1
+B
+B
+B
+B
+B
+B
+B
+B
7 46 45 44 43
41
42
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
8
0V
0V
0V
0V
4.8V
0V
5V
0V
0V
–B
1
FW703
2
3
4
5
6
7
8
9
VF1
–VP
VF2
POWER
D_5V
MAIN_STB
MAIN_SI
MAIN_S0
MAIN_SCK
DISPLAY PWB-A3
3
1
DISC
SKIP
OPEN
/CLOSE
3
1
TIMER
/SLEEP
CLOCK
ON/
STAND-BY
VOLUME
DOWN
X-BASS/
EQUALIZER
VOLUME
UP
STOP
FWD
FF/
PRESET UP
RANDAM/
DEMO
REC
PAUSE
TUNING
UP/TIME
TAPE
VIDEO
/AUX
EON
DISPLAY
MODE
ASPM
PTY./TI
SEARCH
TUNER
(BAND)
MEMORY
/SET
TUNING
DOWN
/TIME
REV/
PRESET
DOWN
CD
3
2
1
TUN_SM
TUN_SD
D_GND
TUN_MUTE
SYS STOP
POWER
AR_P
P32/TO2
P31/TO1
P01/INTP1
P02/INTP2
P03/INTP3/CI0
P33/
TI1
P34/TI2
P35/PCL
P36/BUZ
VSS
XT2
P04/XT1
AVREF
AVDD
P10/ANI0
P11/ANI1
P12/
ANI2
P13/
ANI3
P16/ANI6
P15/ANI5
P14/ANI4
P17/ANI7
AVSS
P74
P73
P37
P30/TO0
X1
X2
VSS
AVREF
AVDD
KEY-0
KEY-1
KEY-2
KEY-3
XT2
P04
5V BACK UP
1
2
3
4
5
6
7
8
R701
10K
SW726
SW725
R759
12K
R760
12K
FW701
R752
10K
R751
1K
R754
10K
SW722
SW721
R741
3.9K
SW716
R744
2.2K
SW714
D703
1SS133
C713 0.01
D705
1SS133
R793 100K
L701
100
µ
H
R765
10K
1K
R766 1K
TER
R750     1K
R749     1K
R748     1K
SW701
SW706
SW715
SW713
R738
33K
SW705
SW718
SW717
R745
3.9K
R703
1.2K
R711
2.2K
R731
12K
R708
1K
SW709
SW708
SW704
C701    220/6.3
C702    0.022
R728     1K
R739     1K
R740     1K
C710
18P
(CH)
C709
15P
(CH)
XL701
4.19MHz
R756     1K
R727     1K
R726     100
SW703
R714
12K
SW711
R747
12K
SW720
SW719
SW724
R746
5.6K
R713
5.6K
SW710
R709
1.2K
R710
1.8K
R702
1K
SW702
SW712
R712
3.9K
SW707
R732 8.2K
R733 8.2K
R735 8.2K
R736 8.2K
R737 8.2K
R734 8.2K
R797
1K
R791
100
Q704
KTC3199 GR
R792 3.3K
D704
1SS133
R789 12
R795 2.2K
C716
100/6.3
Q702
KRC102 M
R790
150
C712 0.022
C720 0.001
D702
1SS133
D701
1SS133
ZD701
MTZJ3.9B
C715
220/6.3
R769
1K
R788
10K
R796
82
Q703
KTC3199 GR
R770
10K
RX701
REMOTE
SENSOR
R768
1K
R767
10K
C714
0.01
C711
3.3/50
R730
15K
R707     10K
R706     1.8K
R705     10K
C703
C703-C708:100P
C704
C705
C706
C707
C708
L702
0.82
µ
H
CD-C421H / C411H
– 36 –
A
B
C
D
E
F
G
H
1
2
3
4
5
6
Figure 36 SCHEMATIC DIAGRAM (10/11)
• NOTES ON SCHEMATIC DIAGRAM can be found on page 16.
(UJ)
2
1
2
1
8 7 6 5
4 3 2
1
22 21 20
19 18
17 16 15
14 13 12
11
10
9
8
7
6
5
4
3
2
1
24
23
22
21
20
19
18
8
7
6
5
4
3
2
1
+B
+B
+B
+B
+B
PLL(TUNER)
(0V)
(0V)
9.4V
0.8V
0V
(0V
3.9
X IN
X OUT
VSS
AOUT
AIN
PD
VDD
FM IN
MW
AM IN
FM
MO/ST
ST IND
IF IN
CE
DI
CL
DO
FM
(CH)
(CH)
FM MUTE
LEVEL
AM IF
3
2
1
FM IF DET/
FM MPX/AM IF
FM DET
FM IF IN
AM MIX OUT
AM OSC
IN
AM OSC
OUT
REG
FM
AFC
AM RF
IN
VSM
CUT
AM LOW
STEREO
SD
GND
AM IF
IN
OUT
FM/AM
FM IF AMP.
AM ANT.
AM
OSC.
3
2
1
(CH)
AM LOOP
ANTENNA
FM
75ohms
ANTENNA
TERMINAL
3
2
1
FM FRONTEND
IF OUT
GND
F OUT
VT
VCC
GND
GND
ANT
TP302
LOW 
FILT
R369
82
Q371
KTA1266 GR
R382
150
C380
10/16
R378
82K
R373
1K
R372
1K
R374
1K
R371
1K
C350
0.022
C352 10/16
C351 0.022
R351
5.6K
C353
0.022
C354
0.022
R393
1K
C364     10/16
C366     0.001
C365     0.022
C363     0.022
C343
33P
VR351
10K(B)
D301
1SS133
CNP301
R349 33
R344
470
R345
4.7K
R301
330
C346 0.022
C345 0.022
C321
100/16
R379
2.2K
C382
15P
C381
12P
X352 4.5MHz
C385
0.01
R377
47K
L351
100
µ
H
R358
8.2K
C342
0.022
IC30
LA18
CF351
C361     0.022
D304
1SS133
C301
0.001
D303
1SS133
L341
BALUN
C362 3.3/50
C393
1/50
R380
1.5K
R381
10K
C394
47/16
SO301
C387
0.022
C392
0.001
L353
1mH
C397
0.022
R346
330
R347
6.8K
C341
0.022
R348 680
FE301
CF301
Q301
2SC380 O
C347
0.022
C334
18P(UJ)
R336 4.7K
R324
100K
T306
C336
470P
C335
18P
VD301-2
KV1236Z23F
R323
68K
C384 0.001
CF302
C323
0.022
C330 10P
T302
C332
0.022
R319
100K
C331 0.047
VD301-1
KV1236Z23F
D302
1SS133
R352
1K
CF352
T351
C337
0.022
IC302
LC72131
C338
0.001
SHASSIS
GND
SHASSIS
GND
C367
1/50
R350
2.7K
L342
2.2mH
L354
TUNER PWB-C
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