Sharp MS722 - MiniDisc Recorder - Metallic Service Manual page 32

MD-MS722/C/WMS721W
P30
P31 P32
ATA
A
ATA
K
K
K
ON
ON
CNT
EMPH1
B
C
D
+B
E
F
C200
1
G
1
2
IC200
62FP2002
2V REGULATOR
H
• NOTES ON SCHEMATIC DIAGRAM can be found on page 39.
1
HREC
JOG0
JOG1
R460
47K R456 R457
R455
5.6K 8.2K 18K
HKEY2 R459
47K
HSTOP
HPLAY
HKEY1
R451 R452 R453 R454
5.6K 8.2K 18K 56K
R482
R481
18K
36K
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
1 +B
4 3
2
5 1
C773
2.5V REGULATOR
0.22
L771
47 H
TP771
C771
47/6.3
L862
47 H
TP772
C869
47/6.3
+B
L861
C862
4.7 H
1/16
C836
0.1
D852
F1J2F
C857
10(CH)
C837
0.1
R855
C859
270K
0.001
1
R860
33K
2
R858 R851
10K
100K
3
4
100K
(From Serial
R852
5
No. 81201801)
C851
68P
1 VREF
6
(CH)
DB
2
1
(Only Serial
No. 81101800)
2
R821
3
680K
R822
3.3M
4
R823
100K
5
C821
68P (CH)
6
L821
10 (CH)
3
+B IC821
CPH3303
C826
100/6.3
+B
(Only Serial No. 81101800)
220/6.3
(From Serial No. 81201801)
2
Figure 32 SCHEMATIC DIAGRAM (3/4)
KEY FLEXIBLE PWB UNIT
FLEXIBLE
PWB
1 DISPLAY
TP451
1
TP452 VOL DOWN
2
TP453 REC
3
TP454 EDIT
4
TP455 VCC
5
P-MODE
TP456
6
TP457 JOG 1
7
JOG 2
TP458
8
TP459
9
GND
10
TP461 BASS
11
TP462 ENTER
12
TP463 STOP
13
TP464 SKIP DOWN
14
TP465 SKIP UP
15
TP466 PLAY
16
TP467
VOL UP
17
TP468
CHARACTER
18
18
CN451
7
7
6
C481 TP485
5
0.1
TP484
4
DSPSTB TP483
3
DSPSCK TP482
2
DSPDAT TP481
1
1
CN482
FLEXIBLE
PWB
R72
8.2K
R501 R712
C509
470 5.6K
2.2
C734
C510
R719
0.1/16
2.2 8.2K
R502
470
12 10 9 8 7 6 5
11
RI LI
C511
DGND
1
13 15 16 18 19 20
14 17
R703
120K
R702
100
L500
22 H
+B R762
3.6K
C762
1
C761
R754 R761
1 270K 3.6K
12 11 10 9 8 7
C775
0.01
DGND
13 14 15 16 17 18 19
C772
47/6.3
C754
1
+B
L752
C872
47 H
10
C753
1
L871
0.47 H
Q891
2SA17457
IC871
TK71345M
4.5V REGULATOR
(ON/OFF)
C861
1/16
4 3
D861
D871 TP807
F10J2E 2
RB521S30
5 1
IC802
C856
R871 C871
R872
NDH8304P
1/16
18 1 100K
L851
POWER SELECT
4.7 H
+B
CHARGE DRIVE
D851
RB521S30
IC850
Q830
IR3M09N
DTC144 TE
C855
POWER DRIVE
100P(CH) 2
3
OSCIN
VREF 12
C858
1
OSCOUT 100P(CH)
DB
11
10
EAIN+ ROSC
R859
15K
EAIN-
STATE 9
EAOUT VCC
8
7
GND
OUT
C831
1 C827
100P (CH)
OSCIN
VREF 12
C828
OSCOUT 100P (CH)
DB
11
10
EAIN+ ROSC
R829
R831
15K
EAIN-
180K
9
STATE
EAOUT VCC
8
7
GND OUT
R832
220K
C830
IC820
1
IR3M09N
POWER DRIVE
Q841
2 DTA144 TE
R843
100K 1
3
3 4
– 32 –
LCD
LCD
MS722/MS722C
DRIVER
MS722W/MS721W(S)
/MS721W(BL)
L710
0.47 H
R717
R711
1K
5.6K
C733
0.1/16 Q711
C715
0.1
RN1444 A
4 3 2 1
2
C713
3
1
1
L-CH C712
100P(CH)
R-CH
INPGCK
R715
100K
21 22 23 24
R714
INPGIN
R716
100K
2SC4213 B
10K
C714
1
R726
R728
1K
MCPGIN
C731
0.22
R729
R770
2.7K
39K
C721 L-ch
3.3/10
R-ch
R730 C722
C723
2.7K 3.3/10
0.001
6 5 4 3 2 1
C735 C736
RI LI
0.001 100
20 21 22 23 24
L491
4.7 H
R753
C755
0.01
120K C491 L456
L751 0.1/16
47 H R765
L-CH L452
R-CH L454
L453
R766
R492
RDATA
1K
R764 R763
82 82
C451
Q892
0.001
2SA17457
R893
1K
R892
56
R891 R815
VCC1
TP805
2.2K 56K
C800
TP801
C801 R816
1 R809
0.1
24K
2.2K
R802
4.7K
5 4
IC801
6 3 HN1C03FU
+B 1 6
CONSTANT
7 2 R803
2 5
CURRENT DRIVE
27K
8 1 3 4
R804
D801
680
SB10015C
R830
100K
F800
1.00A,
63VDC
R805
680K
!
R806
300K
C805
100/6.3
C802
4 3
1
IC841
2 R841 R807
470K 100K
5 1
XC62HS02
C803
POWER SUPPLY 0.1
MICROCOMPUTER
R808
1M
R842
1K
R812
180K
R811
330K
R813
R848
100K
1M
1 8
2 7
3
6
C842
4 5
1
IC842
7WH123FU
C-MOS LOGIC
2
1
Q842
DTA114YE
3
5
R765·766
10
27
J701
OPTICAL
/LINE IN
TP707
7
VCC
TP709
9
Vout
TP708
8
GND
R713
10K
TP701
1
L702
TP702 L
2
L703 TP703 R
3
TP704 GND
4
TP705
L704
5
Q721
R725
100
39K
J702
R724
MIC IN
6.8K
TP714
4
L714
TP713
2
L713
TP712
3
L712
TP711
1
C724
0.001
L711
J703
REMOTE
CONTROL/
HEADPHONES
TP726
6
TP725
5
TP729
TP722
2
TP724
4
TP723
3
TP721
1
TP727
7
L457 TP728
8
L458
J801
DC IN
1
2
TP802
3
TP803 +B
BATTERY
TERMINAL
TP804
TP810
TP811
TP812
EXT.BATTERY
TERMINAL
6