Sharp MD-S301 - Page 25

MD-S301/S301W
– 25 –
Figure 25 SCHEMATIC DIAGRAM (2/2)
7
8 9 10 11 12
• The numbers 1 to 16 are waveform numbers shown in page 31.

CHARGE,–
CHARGE,+
EXT.
BATTERY,–
EXT.
BATTERY,+
DC JACK
D
E
UNIT
GND
I/O4
I/O3
CAS
OE
A8
A7
A6
A5
A4
VCC
A3
A2
A1
A0
A9
RAS
WE
I/O2
I/O1
L-CH
R-CH
BCK
WS
DATA
VDDD
VSSD
SYSCLK
APSEL
SF1
SF0
DEEM
MUTE
VREFD
VDDA
VOUTL
VSSA
VOUTR
STATE
VCC
–
–+
++
ROSC
EAIN+
EAIN–
EAOUT
GND
OUT
PWM
OSC
OSCOUT
DB
VREF
OSCIN
OSCIN
VREF
DB
OSCOUT
OSC
PWM
OUT
GND
EAOUT
EAIN–
EAIN+
ROSC
++
+–
–
VCC
STATE
+2.5V
+2.5V
–2.2V
G
S
D
S
G
G
SD
NC
NC
NC
NC
NC
NC
NC
+2.5V
VCC
GND
MAIN PWB-A
REMOTO CONTROL / HEADPHONES
+2.5V
+2.2V
L-CH
R-CH
AGND
DGND
KEY
DATA
PLAY
EL+B
SYSD2
SYSD0
SYSD1
SYCS
SYWRX
SYRDX
+2.5V
–
–
+
+
7
89
10 11 12
6
5
4321
CN401
6
5
6
5
123456789
10 11 12
15 14 1318 17 1621 20 1924 23 22
1234
8765
7
89
10 11 12
6
5
4321
321
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
0
1
2
34
5
1
2
34
5
6
1
2
3
5
6
1
2
34
5
1
1
1
2
2
2
3
3
3
4
4
5
5
1
2
34
5
6
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
1
23
4
1
2
34
5
1
2
34
5
6
1
2
3
4
5
6
7
89
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
1
2
34
5
6
1
2
34
5
6
1
2
3
4
5
6
7
8
TP871
TP872
D841
1SS372
C611
1
R801 2.7K
TP728
C714
0.22/10
C713 0.22/10
R711
82
C711
0.0022
R709 1K
R712
82
C712
0.0022
TP725
C503
10/6.3
C502
10/6.3
C504
10/6.3
TP202
C403
0.047
R840 10K
C836 0.01
R838 33K
R839
100K
D831
RB521S30
R871
1K
Q871
2SA1745
C858
10/10
D856
F1J2F
D857
RB491D
L854
C852
1
R870 100K
D862
HZU2BLL
R868
1M
L851

L852
C851
3.3/10
R851
100K
Q852
2SJ305
Q853
NDS335N
R804
1.2K
D811
SB10015C
C861
1
SW452
S.DOWN
SW451
PLAY/S.UP
TP406 TP405
TP404
R454 22K
R452 10K
R407 100K
C401
10/6.3
Q861
2SC4738 GR
R866
100K
R865
100K

C865
1
R864 100K
C863
0.01
R867 390K
R862
470K
C857
10/10
D854
SB10015C
R852 1K
RB521S30
D8517

D814
RB521S30
C813 1
C812
0.1
R818 560K
R817 470K
R813 100K
C811
1/10
R812
22K
R811
1K
TP112
R802
3.3K
D803
RB521S30
Q801
2SD1950
C801
1
D802
015Z5.1Y
IC812
HAT1025R
D812
SB10015C
D813
SB10015C
C835 390P
C834 560P
R837 15K
R833 10K
C831 0.01
R832
100K
R831 33K
C822
33/10
C823
1
C824
3.3/10
L823
4.7µH
L821
L822
4.7µH
L824
D822
F1J2F
R824 390K
C828
12P
R823
360K
C827
10/10
(CH)
R822
27K
C821
0.1
TP811
C151
68/10
L871 4.7
C833
0.01

C840 390P
R843 15K
C839 560P C838 0.01
C841 0.33
R844
270K
R846 330K
C
H)
C
201
1
L201 4.7µH
L202
1µH
C742
0.001
C741
0.01
C501 10/6.3
C508 2.2/10
C507
2.2/10
C845
1/10
C846
1/10
R506
8.2K
R505
8.2K
C732
47/4.0
C731
47/4.0
C722
47/4.0
C721
47/4.0
C859
1
R710 1K
C706
3.3/6.3
R707
27K
R708
27K
D702 015Z5.1Y
R722
L751 4.7µH
L501
10µH
HOLD
SW401
TP203
TP204
TP205
TP206
C832
220P
(CH)
IC831
IR3M09N
C830
1
R845
240K
C855
1
R842
100K
IC832
IR3M09N
C837
180P
(CH)
R409
22K
R412
150K
IC404
TC7SH86FU
R854
100K
D855
RB521S30
IC851
NDC631N
C853
1
IC852
S8327B28
L853
33µH
R861
1K
IC861
TC7SL32FU
IC862
7SL32FU
IC861~IC863: START UP DRIVE
R863
100K
C864
1
R869
100K
IC815
RN4986
C862
3.3/10
C202
1
IC202
IX2567AF
4VIT D-RAM
C856
1
IC405
S80821LN
TP412
TP220
TP408
TP416
TP415
R401
330K
D402
1SS361
R422
1K
R421
1K
IC863
7SL00FU
D861
1SS393
IC871
TK71325M
POWER SUPPLY
MICROCOMPUTER
C871
0.47
IC814
POWER SELECT
CHARGE DRIVE
RN4904
TP803
J801
TP812
L102
10µH
R835
100K
R825
18K
D852
1SS372
IC501
µDA1320
D/A CONVERTER
TP501
L611
1µH
R847
220K
C842
56P
(CH)
R860
100K
TP802
TP801
Q811
DTC144 EE
Q851
2SJ305
IC811
NDH831N
TP806
R821
56K
C826
1
IC821
NDC631N
D821
RB521S30
R805
10K
R806
270
TP804
TP805
IC802 UMD3N CONSTANT  CURRENT DRIVE
R803
3.9K
IC801
HN1C03FU
CONSTANT 
CURRENT DRIVE
L734
TP721
L731
L732
L710
L736
L733
R702
330K
C707
0.056
D451 015Z5.1Y
L701
47µH
L702
47µH
R713
8.2
C715
0.082
C716 0.082
R714
8.2
C702
1
C701
1
C703
1
C704
1
R701
150K
C705
0.01
IC702
IR3R54N
AUDIO AMP.
C751
0.1
L711
100µH
L721
100µH
TP702
TP701
R501
5.6K
R502
5.6K
TP726
TP722
TP723
TP724
TP727
IC833
TC7S66FU
ANALOG SWITCH
R836
100K
C815
27P
(CH)
C816
27P (CH)
1
R408 22K
CK404
CK405
CK406
P
419
R4034
10K
TP413
J701
123
654
2.8V DC/DC C
POWER DRIVE
POWER DRIVE
POWER DRIVE
POWER DRIVE
CHARGE DRIVE
CONSTANT 
CURRENT DRIVE
RESET
REMOTE CONTROL
CONSTANT 
CURRENT DRIVE