Sharp MD-MS702MK Service Manual page 16

MD-MS702MK
P14 P15 P16
A
HKEY2
HREC
HSTOP
HPLAY
HKEY1
DSPSTB
B
DSPSCK
DSPDAT
JACK PWB-A2
C
33 TP593
MCPGIN TP793
33
INPGIN TP592
TP792
32
INPGCK TP791 TP591
31
TP790 TP590
30
TP789
29
TP588
28
TP787
27
26
OPTCNT
TP785 TP585
25
DIN
TP784 TP584
D
24
TP783
23 TP582
22
RCLAT TP581
TP781
21
TP580
RADAT TP780
20
RACLK TP779 TP579
19
PBLAT TP578
TP778
18
TP577
BEEP TP777
17
PBOPON TP776 TP576
16
TP575
TP775
15
ADPON TP774 TP574
14
DAPON TP773 TP573
13
DFCK TP572
TP772
12
LRCK TP771 TP571
11
BCLK TP570
TP770
10
ADDATA TP569
TP769
9
DADATA TP768 TP568
8
EMPH1 TP567
TP767
7
EMPH0 TP566
TP766
6
TP765 TP565
5
TP764 TP564
4
TP563
TP763
3
RKEY
TP762 TP562
2
E RPLAY TP561
TP761
1
1
Q401
2SA17457
R400
3.9K
IC702
CLOCK
TK71354M
4.5 REGULATOR
(ON/OFF)
L862 L863
47µH 4.7µH
F
C869 C865
C864
33/6.3 1
33/6.3
L171
10µH
C810
0.33/10
TP810
R810
180K
G
PCNT
H
NOTES ON SCHEMATIC DIAGRAM can be found on page 23.
The numbers 5 to 8
1
TP451
1
TP452
2
TP453
3
R455 R456 R457
TP454
4
5.6K 8.2K 18K
R458
TP455
5
56K
TP456
6
TP457
7
TP458
8
TP459
9
TP460
10
TP461
11
TP462
12
TP463
13
TP464
14
R451 R452 R453 R454
CN451
5.6K 8.2K 18K 56K FLEXIBLE
PWB
R481 C481 TP487
7
36K 0.1
TP486
6
TP485
5
TP484
4
R482 TP483
3
18K TP482
2
TP481
1
CN482
FLEXIBLE
PWB
L772
4.7µH
12 11 10 9 8 7 6 5 4 3 2 1
13 14 15 16 17 18 19 20 21 22
MCPGIN
C507
INPGIN
10/6.3
INPGCK
R500
VCCMIC
4.7
VCC2.8
3 2 1
TP586 VCC2.8X
OPTCNT
DIN
4 5
C773
C774
RCAULT
0.2
1
AUDATA
AUSCLK
PBAULT
BEEP
PBMUTE IC771
RESET
TK71225M
PWAD
2.5V REGULATOR
PWDA
MCLK
LRCK
SCLK
STDO
STDI
DEM1
DEM0
RKEY
RPLAY
RMDAT
POWER DRIVE
IC841
IR3M09N
1 VREF
DB
R861 2
3 2 1
R841
100K
100K
3
EAIN+
R846
10K EAIN–
4
C842
R843
22P(CH)
D862
4 5
100K EAOUT
RB521S30 5
R848
220K
6
C866
GND
C863
1
1
C846
1
D861
RB491D
NDS335N
POWER DRIVE
IC821
IR3M09N
1
VREF
C830
0.001 DB
2
R826
10K
3
EAIN+
PCNT1
C822 EAIN–
4
39P
R823
R811 (CH)
100K EAOUT
180K 5
R828
270K
6
GND
C825
68P
C826
D831
TP811 (CH)
1
1SS372
C831
C832
0.1
0.1
IC822
C821
220/4 NDS335N
are waveform numbers shown in page 43 (MD-MS702).
2 3
Figure 16 SCHEMATIC DIAGRAM (3/3)
1
VOL UP
VOL DOWN
SKIP DOWN
SKIP UP
ENTER
EDIT
DISPLY
C-MODE
REC
STOP
PLAY
LCD
GND
BASS
P-MODE
14
KEY FLEXIBLE
PWB UNIT
7
LCD
DRIVER
1
R720 R712
R501 C509
8.2K 5.6K
470 2.2
R719
C510
8.2K
2.2
C734
R502
0.1
470
12 11 10 9 8 7 6 5 4 3
RI
LI
DGND
13 14 15 16 17 18 19 20 21 22
R703
23 24
150K
TP500
C702
L500
10/6.3
C701
4.7µH
10/6.3
R762
3.3K
C762
1
C761 R754
R761
1 330K
3.3K
C775
0.01
12 11 9 8 7 6 5
10
L771
RI
47µH
C771
33/6.3
DGND
13 14 15 16 17 18 19 20
L710
0.47µH
C754
1
L751
47µH
C753
1
L752
47µH
L801
C804
1µH
1
1
C806
3.3
2
C843
100P(CH)
X700K Q802
OSCIN
3
12
DTC144 EE
C844
OSCOUT
100P(CH)
4
11
IC801
10
HAT1025R
ROSC
R844
CONSTANT
15K
STATE 9
CURRENT DRIVE
Q803
VCC
8
DTC144 EE
OUT IC803 NDH831N
7
IC804
CONSTANT
CURRENT DRIVE
RN4904
4 3 1
L841 C849
5 2 2
4.7µH 0.01
6 1 3
R851
4
100K
POWER SELECT
CHARGE DRIVE
IC842 R809
100K
POWER SUPPLY
MICROCOMPUTER R872
100K
3 2 1
C823
100P(CH)
OSCIN
2 1
C824
OSCOUT
100P(CH)
1 1
4 5
Q873
1 0 2SJ305
ROSC
R824
15K
C877
STATE 9
10/6.3
MICOM2.5V
VCC
8
C828
OUT 1
7
1
VCC
L821
4.7µH
2
3 GND
R831
100K IC874
TC7S00FU
CHARGE DRIVER
D822
RB521S30
4
– 16 –
PLAYBACK SIGNAL
RECORD SIGNAL
R717
1K
DIN
R711
TP707
5.6K
C733
C715
0.1 Q711
0.1
OPTCNT
2 1 RN1444A TP709
C713
R713 TP708
1 10K
TP701
1
L-CH L702
TP702
2
R-CH
L703 TP703
3
C711
INPGCK R715 TP704
R714
4
100P
100K
10K
TP705
(CH)
23 24
L704
C712
C714
INPGIN
R716 100P
Q721
1
(CH)
100K 2SC4213B
R725
C727 R726
100
1 39K
R728
R727
R723
1K
MCPGIN 10K
6.8K
C731
0.22 L714
R729
C721
2.7K L713 TP713
L-CH
3.3/10
L712
R-CH
TP712
C722
3.3/10
R730 TP711
C723 C724
2.7K
0.001 0.001
NC
NC
4 3 2 1
L711
C735 C736
LI
0.001 0.01
D494
15AZ7.5Y
L491
TP726
4.7µH L456
21 22 23 24
KEY
PLAY TP725
L452 TP729
TP722
C755
R765 C491
0.01
L454
15 L-CH 0.1 TP724
L453
R-CH
TP723
TP721
R492
L457
DATA TP 727
1K
R752 L458
R751
TP728
82
82
C451
0.001
D801
D800
CONSTANT R814 015Z5.1Y
RB491D
3.9K
CURRENT DRIVE
8
L888
IC800
R817
CORE
HN1C03FU
680
7 1 6 1
2 5 TP801
2
R818
6
3 4 TP802
10K
R815
3
3.9K
L887
5
IC805
R819 CORE
UMD3N
270
Q801
4 3
2SD1950
5 2
6 1
R802
CONSTANT
390K
CURRENT DRIVE
TP803
R805
470K
BATTERY
8
C807 TERMINAL
7 0.1 TP804
6
5
TP805
R807
TP807
27K
TP808
EXT.BATTERY
TP809
TERMINAL
TP806
C873
1
C871
1
L871
D873
4 3
47µH
1SS372
VSS
D871
RB491D
1 2 1 5
2
Q871
C875
NDS335N
0.22
3 4
D875 3V DC/DC
1SS378
CONVERTER
C878
5
3.3
1 VCC 8
R873
2 7
R876 1K
3 6
100K
4 4
5
GND
R875
C879
IC872 100K
1
TC7W32FU
R874
C-MOS LOGIC
R877
470K
100K
4 3
5 2
6 1
IC876
RN4904
POWER SELECT
CHARGE DRIVE
5
7
9
8
J701
LINE
5
TP714
4
J702
2
MIC IN
3
1
6
5
2
J703
4
HEADPHONES
3
1
7
8
J801
DC IN
6