Sharp MS722 - MiniDisc Recorder - Metallic Service Manual page 31

P30 P31 P32
+B
TP202
TP139
R207
680
6
TP211
C204
0.47
75 74 73 72 71
TP209 76
TP210
77
78
CK201
79
R104
CK202
SBSY
80
22K
CK203
SFSY
81
FOK
CK204
FOK
82
SENSE
SENSE
83
CIN CK205
COUT
84
MCCK
CK206
MCCK
85
DINT
DINTX
86
C203
VDD1
87
0.1
R204
DGND
01 88
1K
XRT
2K
RSTX
89
SYD0
SYSD0
90
SYD1
SYSD1
91
SYD2
SYSD2
92
SYD3
SYSD3
93
SYD4
SYSD4
94
SYD5
SYSD5
95
SYD6
SYSD6
96
SYD7
97
SYWR
98
SYRD
99
SYRS
100
1 2 3 4
5
TP201
P487
B
(Only Serial
C422
No. 8110180)
10/6.3
R422
100K
H
F+
F–
TP610
T–
T+
01
C604
1
C602 C603
L600
1 1
2.2
• The numbers 1 to
7
L204
XL201
33.8688MHz
CK207
C212
8P(CH) TP212
70 69 68 67 66 65 64 63 62 61 60 59 58 56 55 54 53 52 51
57
50
CK224
49
TP203
48
CK222
47
RAD0
TOTMON 46
76 50 EFMO
RAD1
45
TEMON
77 49 PLCK
RAWEX 44
SBCK
78 48 ACRCER
RARASX
SBO 43
79 47 TCRS
RAA9
42
RAD3 41
RAD2
40
IC201
RACASX
39
LR37811
DGND 38
ENDEC LSI RAOEX 37
RAA8
36
RAA7 35
RAA6 34
SYSD7 RAA0
97 29
RAA5
33
SYWRX RAA1
98 28
RAA4 32
99 SYRDX RAA2
27
VDD2 31
SYRS
100 26 RAA3
RAA10
30
29
28
27
26
6 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
7
VCCENDEC
C205
0.1 L201
22 H
R206
TP206
270K
L100
10 H
C100
10/6.3
R413
1K
TP408
R414
1K
R412
10K
TP409
25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
26
27
28
SYD6
29
SYD7 SYD3
30 26
VSS SYD4
31
27
RCAULT
RCLAT SYD5
32 28
MCPGIN
MCPGI
33
INPGIN
INPGI
34
INPGCK
INPGCK
35 IC401
RCPCNT2
RCPCNT
36
TP416 IX2772AF
TEST1
37
SYSTEM
TEST0
38
TP417
JPNP
39 MICROCOMPUTER
R402
VCC
40
100K
RCLED
41
ELLVL
42
43
ELON
48
LDON
LDON
44
VSS
OPICGA 49
OPICGA
45
RFLAT 50
RADAT
RFLAT
46
RACLK
47
48
49
50
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
TP400
XL401
4.194MHz
R408
D431
100K
1SS361
SW402
HOLD
C431 R431
0.47 330K
18 are waveform numbers shown in page 40.
8
Figure 31 SCHEMATIC DIAGRAM (2/4)
TP205
1 VCC GND 24
2 I/O4 23
I/O1
I/O3 22
3 I/O2
4 WE CAS 21
5 RAS OE 20
A9
6 19 IC202
IX2723AF
7 A10 A8 18
8 A0 A7
17
A6
9 A1 16
10 A2 A5 15
11 A3 A4 14
12 GND
VCC 13
16BIT D-RAM
VCCDRAM
C202
47/6.3
L202
100 H
VCC2R5V
IC402
S29L294A
EE-PROM
R411
100K
1 VCC 5
1 CS VCC 8
2
2 SK NC 7 3 GND 4
TP411
IC404
DO
3 6
PRTC
7SH00FU
TP410
4 DI GND
5
NAND GATE
EJECT
SW401
4
3
8 7 6 5 4 3 2 1 2
9
1
100
R406 PCNT2
99
100K
TP406
98
R405
EJSW
97
TP405
10K
CKSTP HDON
100 96
XRT
PCNT2
99 XRST 95
FOK
VCC FOK
98
94
SENSE
SENSE
93
DCNT1M
92
SWPUP
91
TP415
MCMON
90
START
START
89
TP401
VSS
88
C401
AVSS
87
0.1
LDVAR
LDVAR
86
TEMP
TEMP 85
HKEY2
HKEY2
84
HKEY1
HKEY1
83
RKEY
82
INN
PLVINN
81
DCI
PLVDCI
80
DRY
PLVDRY
79
Vref 78
AVCC
77
DINT
DINT 76
JOG1
JOG0
IC431
S80820LN
RESET
1 OUT VSS 4
VDD
2 3
9 10
– 31 –
MD-MS722/C/W/MS721W
DADATA
ADDATA
DFCK
BCLK
LRCK
DIN
ADPON
DAPON
OPTCNT
EMPH1
+B
C200
1
1
3
2
IC200
62FP2002
2V REGULATOR
11
HREC
JOG0
JOG1
R460
47K R455 R456 R457
5.6K 8.2K 18K
HKEY2 R459
47K
HSTOP
HPLAY
HKEY1
R451 R452 R453 R454
5.6K 18K
8.2K 56K
R482
R481 C481
18K
36K 0.1
DSPST
DSPSC
DSPDA
12 11 10 9 8 7 6 5 4 3 2 1
13141516171819 202122 2324
C500
10/6.3
R500
4.7
C507
10/6.3
IC771
TK71225M
C774
+B
1
4 3
2 C
0.
5 1
C773
2.5V REGULATOR
0.22
L771
47 H
TP771
C772
C771
47/6.3
47/6.3
L862
47 H
TP772
C869
47/6.3
+B
L861
C862
D8
4.7 H
1/16 F10
C836
0.1
D852
F1J2F
C857
10(CH)
C837
0.1 I
R855
C859
270K POW
0.001
1
VREF
R860
33K
DB
2
R851
R858
10K
100K
3
EAIN+
EAIN-
4
100K
(From Serial
R852
EAOUT
No. 81201801) 5
C851
68P
1
VREF 6
(CH) GND
DB
2
1
VREF
(Only Serial
DB
No. 81101800)
2
R821
3
680K EAIN+
R822
3.3M
EAIN-
4
R823
100K
EAOUT
5
C821
68P (CH)
6
GND
L821
10 (CH)
IC821
+B
CPH3303 PO
C826
100/6.3
+B (Only Serial No. 81101800)
220/6.3
(From Serial No. 81201801)
12