Sharp MD-MT877S Service Manual page 31

DADATA
ADDATA
DFCK
BCLK
LRCK
ADPON
DAPON
OPTCNT
DIN
EMPH1
1 24
VCC GND
2 23
I/O1 I/O4
3 22
I/O2 I/O3
4 21
WE CAS
5 20
RAS
OE
6 19
N.C. A9
7 18
A10 A8
8 A0 A7 17
9 16
A1 A6
10 A2 A5 15
11 A3 A4 14
12 13
VCC GND
C202
47/6.3
IC202
IX2824AF
16MBIT
D-RAM
L202
10 H
VCC2R5V
+B
+2.7V +B
IC200
4
5
C200
1
+B
IC404
VCC
1
IC402
2
58X2404T
3
GND
EEPROM
R411
100K
R412
15K
IC404
4
409 5
N7SZ86P5
6 3
8
GATE IC
7 2
8 1
TP411
4
TP413
(GREEN)
TP405
XRT
HREC
EMPH0
PCNT2
TP404
DCON
PCNT3
PBAULT
BATON
DCNT1
(OG)
STOP
(BLUE)
ELON
C401
0.1
D432
1SS372
OPEN
STOP
HPLAY
IC821 CPH3413 N-CH MOS FET
HREC
IC822 IR3M14N DC/DC CONVERTER
IC841 XC6372C281PR 2.8V UP CONVERTER
IC851 CPH3413 N-CH MOS FET
IC852 IR3M14N DC/DC CONVERTER
R464
220K
C454
0.0022
7
+B
+2.7V
C500
10/6.3
IC501
C511 C502
0.1 0.0022
AK4551VT
AD/DA CONVERTER
C503
8 7 6 5 4 3 2 1
3.3/10
C505
9
10 11 12 13 14 15 16
0.001
C506
0.001
R441
5
7 8 6
120
(–)
0V
Q443
2SC4738 GR
0V
R445
10K
IC200
3
62GR2522
2
1
2.5V REGULATOR
C210
0.1
1 6
R442
2 5
820
3 4
5
Q442
RN4911
4
+2.7V
IC771
1 5
2
62GR2322
3 N.C. 4
2.3V REGULATOR
C773 C774
0.22 1
D772
F10J2E
C776
1
D862
F10J2E
C863 R871
10K
1
D861
C775
F10J2E 1
D IC851
C858
1
D851
G
F10J2E
R855
S
IC852
180K
R854
C857
10K
ERRAMP
5
R857 EO
C856 33P
560K
150P EIN
6
(CH)
R831
(CH) R832
180K
180K
7
R853 EIP
R834
270K
1.5M
8
ROSC
C827
IC822
82P
R826 R824
(CH)
3.9M 10K
ERRAMP
5
EO
R825
EIN
6
390K C826
82P(CH)
7
R827 R823 EIP
270K
270K
8
ROSC
C828 D831 D832
1 HRB0103B
HRB0103B
4 3
N.C.
C825 C834
2
1 0.1
1
5
C832
C837 D821
C836
0.1
1 0.47 D1FH3
C822
IC821
D
22/6.3
G
S
8
Figure 31 SCHEMATIC DIAGRAM (2/2)
LCD ASS'Y
7 6 5 4 3 2 1
SWA13
OPEN/CLOSE
CA02
0.1
RA13
18K
RA14
18K
CN451
RA12
1
OPEN TP451
1
33K
+2.7V TP452
2
DSPSTB TP453
3
DSPSCK TP454
4
DSPDAT TP455
5
HREC TP456
6
HPLAY TP457
7
HKEY2 TP458
8
HKEY1 TP459
9
STOP TP460
10
TP461
11
TP462
12
LEDA03 CL190HBX
TP463
13
TP464
14
LEDA02 TLGU1008
14
R720
R501 470 C509 1 6.8K
R502 470 C510 1
12 11 10
R702 13 14 15 16
100
–2.7V
10/6.3
INPGCK
INPGIN
MCPGIN
C764
R754 1
180K C758
C754
1
1
R761
390K
N.C.
R758
9 8 7 6 5 4 3 2 1
100 12 11 10
RHPVEE
R757
BIAS AMP&GAIN SEL.
2.2K
C760 LOGIC AMP&GAIN SEL.
0.1
LHPVEE
R732
13 14 15 16 17 18 19 20 21 22
47K
N.C.
C763
1
R733
47K
R731
C753
47K
1
IR3R59N
AUDIO AMP.
C771 C869
47/6.3 47/6.3
IC871
IC871
1 VCC 5
2 C876
TC7S86FU
1
3 4
GND
EXCLUSIVE
OR GATE
L851
10 H
C845
D842
C851
0.1
HRB0103B
3.3
C846 C847
0.1 1
R844
L841
GND 47
4 IC841
4.7
3
TP842
D841
OUT
1 5
N.C.
F10J2E C841
2 2
VCC
1
STAND
3 4
BY
1
CTRL
R850
C850
22K
0.1
GND
4
DCON
3
OUT
R841
VCC 2
100K
STAND
BY
C860
1 C848
CTRL 1
1
PCNT2
4 3
2
C838
1
5
0.1
IC842
R833
47 62GR2522
2.5V
L821
REGULATOR
10 H
C821
3.3
+B
PLVBAT
BATON
CHGCNT
VCCMICOM
STDCK
9 10
– 31 –
MD-MT877/MD-MT877C
CNA01
SWA01
SWA02
SWA03
RA01
SWA04
5.6K
RA02
SWA05
8.2K
RA03
SWA06
18K
RA04
SWA07
56K
RA05
5.6K SWA08
SWA09
QA01
RA06
2SC4738GR
SWA10
8.2K
RA15 RA07
SWA11
18K
10K
RA08
SWA12
56K
RA16
LEDA04
330
TLOU1008
R717
R712 6.8K
1K
R719 Q711
C734 R711 6.8K
0.1 RN1444 A
6.8K
C733
2
3
0.1
9 8 7 6 5 4 3 2 1
0V 1.87V
LI 1 0V
RI
L-CH
R-CH
R715
IC701
VCC 100K
24
17 18 19 20 21 22 23 IR3R54N R716
N.C.
C701 R703 100K
AUDIO
100K
10/6.3
AMP.
C702
+B
R701
100
R728 C731
1K 0.22
R-CH
R729 4.7K C721 3.3/10
R730 4.7K
C492
1
D496
MA8075M
L491
23 24
33
R765
D494
15
15AZ7.5Y
L-CH
R766 C766 R492
C765
0.22 1K
15 0.22
IC703
D492
15AZ7.5Y
+B
Q493
2SA1832 GR
2.73V
2.21V
R495
(–)
1K
C493
0.47
+4.5V
C817
0.1
R813
2.2K
R881 R882
18K 10K
R816
C881
100K
6 5 4
0.027
Q807
HN1C01 FU
1 2 3
R815 R814
100K
27K
0V
R828 Q803 R803
0.85V
2.2K 2SA17457 1K R801
47K
0.86V
Q802
F841 FDN339N 1
6
1.3V R805
0.4A
2 2 5
1M
DC60V
3 3 4
0V 0V 0V
1
Q804
TP841
HN1C01 FU
Q806
R806
5.39V
HN1C01FU 0V
100K
1 6
R802
2 5 4.65V
100K
3 4
Q805
2SA1832 GR
R807
R264
100K
100
Q252
R810 C840
R809
FTD2017
22K 220/4
47K
5 4
G2 G1
R253
1.3V
6 3
S2 S1
33K
7 2
S2 S1
1
6
8 D 1
D
2 5
R252
3 4
1.3V Q251
560K
2SA17457
Q253
RN4904
C252
0.1
R821
Q254
2.2K
2SA1832 GR
5.38V
R254
4.81V
1M
Q821
HN1C01FU
5.39V
R822
R255
R259
100K 1 6
560K
2.2K
2 5
C253
R258
3 4
0.01
330K
R277
2.2K
C274 0.1
R278
C273
22
0.1
R256
100K
R281
R282
1K
47K
C292
0.01
R291
2.2K
R292
100K
11
RECORD
PLAY
BASS
EDIT
DISPLAY
VOLUME–
VOLUME+
STOP
MODE
FAST REVERSE
FAST FORWARD
ENTER
R718
R710
1K
47
TP706
7
C715 TP708 VCC
9
C713 0.1
TP707 Vout
8
1
GND
N.C. 6
L702
R713
TP701
1
10K
TP702
L
2
L703
TP703
R
3
TP704
GND
C711
C712 4
TP705
L704
100P 100P(CH) 5
R714
(CH)
J701
10K
OPTICAL/
C714 Q721
Q721
LINE
1
4.47V 3.91V
2SD1979 S
R726 R725
RIPPLE
100
39K
4.43V
FILTER
C726
3.3/10
C725
3.3/10
R727 R723
R724
8.2K 6.8K TP714
6.8K L714
4
L713
TP713
L-CH
2
L712
TP712
C722 3.3/10
R-CH
3
L711
C723
1
0.001
TP711
J702
MIC IN
C724
0.001
L456
TP726
6
TP725
5
L452
C491
TP722
2
0.1
TP724
4
L454 L453
TP723
3
TP721
1
L457
RDATA TP727
7
TP728
8
L458
D491 D493
J703
015Z5.1Y
015Z5.1Y
REMOTE
CONTROL/
C451
EARPHONES
0.022
TERMINAL
R496
22
R818
47K
2 3
0V
(–)
Q825
1 0V
DTC144 EE
R817
100K
IC801
EXTENSION
S-80814ALNP
TERMINAL,+
RESET
DC-IN TP801
D801
RB521S30 Q801
RN4904
1 4 1 6
OUT
VSS
2 5
2 3 3 4
VDD
N.C.
IC801
Q261
R804
HN1C01 FU
R261 330K
1 6
1M BATTERY
2
5
TERMINAL,+
3 4
EXTENSION
R263 R262
TERMINAL,+
100K 330K
NI-MH
TP803
R251
C251
22
0.1
0.78V
1 4
OUT
BATTERY
VSS
TERMINAL,–
2 3 N.C.
VDD
IC251
TP804
S-80808LNP
RESET
R271
R274
470K
56K
R275
C272
15K
0.1
R276
120K
4 3
+ -
2
C270
5 1
1
R272
IC271
470K
CONTROL
75S54FU
TERMINAL
OP AMP.
TP805
GND
TERMINAL,–
TP806
C291
1
12