Sharp MD-MT877, MD-MT877C manual 31

DADATA

ADDATA

DFCK

BCLK

LRCK

ADPON

DAPON

OPTCNT

DIN

EMPH1

1	VCC	GND 24
2	I/O1	I/O4 23
3	I/O2	I/O3	22
4	WE	CAS	21
5	RAS	OE 20
6	N.C.	A9	19
7	A10	A8	18
8	A0	A7	17
9	A1	A6	16
10	A2	A5	15
11	A3	A4	14
12	VCC	GND 13

C202

47/6.3

IC202

IX2824AF

16MBIT D-RAM

L202

10∝H

VCC2R5V

+B

+2.7V +B

+B

IC402

58X2404T

R411 EEPROM

100K

R412

15K

409		5	4		TP407
8	R415TP411A 1K	6	3
		TP413	2	TP410	R413	1K
		7
		8	1
4	TP411
	R416	1K

(GREEN)

MD-MT877/MD-MT877C

LCD ASS'Y

SWA13

7 6 5 4 3 2 1 CNA01

OPEN/CLOSE

SWA01

RECORD

CA02

CA01

0.1

SWA02

PLAY

0.1

RA13

SWA03

BASS

RA01

PWB-B

CNLAND1

18K

SWA04

EDIT

RA14

5.6K

RA02

SWA05

DISPLAY

CN451

18K

8.2K

RA12

RA03

SWA06

VOLUME–

OPEN

TP451

1

18K

1

33K

+B

+2.7V

TP452

RA04

SWA07

VOLUME+

DSPSTB

TP453

2

RA05

56K

LCD/KEY

DSPSCK

TP454

3

5.6K

SWA08

STOP

4

DSPDAT

TP455

SWA09

MODE

5

HREC

TP456

QA01

RA06

6

HPLAY

TP457

2SC4738GR

SWA10

FAST REVERSE

7

8.2K

HKEY2

TP458

8

RA15

RA07

HKEY1

TP459

9

10K

18K

SWA11

FAST FORWARD

STOP

TP460

10

RA08

TP461

11

56K

SWA12

ENTER

TP462

12

LEDA03

CL190HBX

TP463

13

TP464

RA16

14

LEDA02

TLGU1008

LEDA04

14

330

TLOU1008

+2.7V

R720

R712

6.8K

R717

R718

C500

R501

470

C509

1

1K

R710

6.8K

Q711

1K

10/6.3

C501 0.0022

R719

C734

R711

6.8K

47

TP706

7

C511

C502

IC501

R502

470

C510

1

6.8K

0.1

C733

RN1444 A

C713

C715

TP708

VCC

3

2

0.1

TP707

9

Vout

0.1

0.0022

AK4551VT

12

11

10

9

8

7

6

5

4

3

2

1 0.1

0V

1.87V

1

8

GND

RI

L702 R713

N.C. 6

AD/DA CONVERTER

ROUT

RIHP

LOUT

LIHP

AGND

LI

1

0V

TP701

1

L-CH

10K

TP702

L

2

8 7

6

5 4 3 2 1

C503

R-CH

L703

TP703

3

R

C712

C711

TP704

GND

IC501

SDTO DEM1

DEM0

VDD

VSS

AINL

AINR

VCOM

3.3/10

R715

L704 TP705

4

VCCADDA TP500

VCC

IC701

100P

100P(CH)

5

100K

(CH)

R714

J701

R702

13

14

15

16

17

18

19

20

21

22

23

24

R716

10K

MCLK

PWAD

PWDA AOUTL

AOUTR

100

VEE

N.C.C701 R703

IR3R54N

100K

C714

Q721

Q721

OPTICAL/

SDTI LRCK

SCLK

–2.7V

10/6.3 100K

AUDIO

1

4.47V

3.91V

LINE

C703 0.01

2SD1979 S

C505

AMP.

R726

R725

RIPPLE

9 10

11

12

13

14

15

16

C702

0.001

10/6.3

+B

39K

4.43V

FILTER

INPGCK

R701

C726

C506

INPGIN

100

3.3/10

C725

MCPGIN

3.3/10

0.001

C764

R728 C731

R727

R723

R724

R754

1

R-CH

1K

0.22

8.2K

6.8K

6.8K L714 TP714

4

180K

C758

C754

R729 4.7K

C721

3.3/10

L713TP713

5

R441

L-CH

2

7

8

6

1

1

L712 TP712

120

R730 4.7K

C722

3.3/10

R-CH

3

(–)

R761

R762 100K

C723

L711

0V

1

R200

100K

Q443

R758

390K

N.C.

0.001

TP711

0V

J702

2SC4738 GR

12

11

10

8

7

6

5

4

3

2

1

MA8075M

C724

R445

100

9

C492

MIC IN

BEEP

HP

RLPFO

L– R–

L+ R+

0.001

IC200

10K

R757

RHPVEE

ATT

LPF

1

D495

IC200

BIAS

AMP&GAIN SEL.

4

3

2.2K

62GR2522

C760

LOGIC

AMP&GAIN SEL.

LLPFO

D496

2

5

1

0.1

LAT

CLK

DAT RHPVCCLHPVCC

LHPVEE

LINRIN ATT

LPF

MA8075M

C200

2.5V REGULATOR

R732

13

14

15

16

17

18

19

20

21

22

23

24

L491

L456 TP726

1

C210

47K

N.C.

33

6

0.1

TP725

C763

R765

KEY PLAY

D494

C491

L452

5

TP722

2

1

6

R733

1

L-CH

15

15AZ7.5Y

0.1

TP724

2

5

R442

47K

L454

L453

TP723

4

IC404

3

3

4

820

R766

C766

C765

R492

TP721

RCAULT AUSCLK AUDATA

L457

1

1

VCC 5

Q442

EMPH0

PBMUTE BEEP

AURESET

PBAULT

R731

C753

IC703

15

0.22

0.22

1K

RDATA

TP727

7

2

RDATA

47K

TP771

TP772

1

TP728

8

RN4911

D492

D491

D493

L458

3 GND 4

IR3R59N

J703

RKEY RPLAY

15AZ7.5Y

015Z5.1Y

015Z5.1Y

AUDIO AMP.

REMOTE

C451

CONTROL/

EARPHONES

IC404

+2.7V

0.022

TERMINAL

+B

N7SZ86P5

Q493

GATE IC

1

5

IC771

C771

C869

ELON

2.73V 2SA1832 GR

2.21V

R496

2

62GR2322

47/6.3

47/6.3

R495

3

N.C. 4

(–)

22

1K

C773

C774

2.3V REGULATOR

C493

0.22

1

0.47

+4.5V

D772

DCIN

C817

0.1

XRT

TP405

F10J2E DCEXT PLVDCI R813 _ R818 PCNT3

HREC

EMPH0

PCNT2

DCON TP404

PCNT3

PBAULT

BATON DCNT1 (OG)

STOP (BLUE)

ELON

TP401

C401

0.1

D432

1SS372

OPEN

STOP

HPLAY

HREC

100K
R463	R464
	220K

C454

0.0022

C776

F10J2E

2.2K

R881

R882

47K

IC871

2

3

0V

1

18K

10K

(–)

Q825

D862

1

VCC 5

C876

IC871

R816

6 5 4

C881

1 0V DTC144 EE

F10J2E

2

100K

0.027

R817

+1.5V

C863

C862 D771

R871

3 GND

4

1

TC7S86FU

Q807

R812 100K

100K

IC801

D852 F10J2E

10K

EXCLUSIVE

HN1C01 FU

1

D861

1 2 3

R815

R814

EXTENSION

C852 22/6.3

1

C775

L851

OR GATE

S-80814ALNP

TERMINAL,+

F10J2E

1

∝

0V

100K

27K

RESET DC-IN TP801

D

IC851

10 H

C845

R828 0.85V Q803

R803

C858

C851

D842

2.2K

2SA17457

1K

R801

D801

Q801

D851 1

G

0.1

HRB0103B

Q802

0.86V

47K

RB521S30

R855

F10J2E

3.3

F841

RN4904

C859 1

S

IC852

C846

C847

FDN339N

1.3V

1

6

R805

R854

R844

1 OUT

4

1

6

180K

C857

0.1

1

0.4A

3

2

2

5

1M

10K

5

ERRAMP

GND

4

47

IC841

L841

DC60V

0V

3

4

VSS

2

5

C856

R857

33P

EO

R RSFF S

4.7

TP841

1

Q804

2 VDD

3 N.C. 3

4

560K

EIN

HN1C01 FU

IC801

R831

150P

R832

(CH)

6

Q CMP

BUF

3

D841

TP842

Q806

R806

(CH)

OUT

5

R829 100K

5.39V

0V

180K

180K

F10J2E 1 N.C.

C841

HN1C01FU

100K

4.5V REGULATOR –2.7V

R834

R853 7 EIP

VREF

VCC

2

2

1

1

6

R802

Q261

C839 0.33

270K

OSC

BY

3

4

2

5

R808

4.65V

100K

HN1C01 FU

R804

1.5M

8

CTRL

1

R261

330K

ROSC

3

4

Q805

1

6

C827

IC822

C842 33/6.3

C850 R850

1M

BATTERY

R826

R807

2SA1832 GR

R264

2

5

R824

82P

0.1

22K

3

4

TERMINAL,+

3.9M

10K

(CH)

5

ERRAMP

GND

4

100K

Q252

100

R263

R262

EXTENSION

R825

EO

RSFF S

C830

DCON

R810

R809

C840

TERMINAL,+

EIN

22K

47K

220/4

FTD2017

100K

330K

390K

C826

6

QR CMP

BUF

OUT

3

R841

R253

5 G2

G1 4

1.3V

NI-MH

TP803

82P(CH)

7

VCC

2

33K

6 S2

S1 3

R251

R827

R823

EIP

100K

1

6

7 S2

S1 2

C251

IC873 62GR4522

VREF

OSC

STAND

1

C843

0.22

C252560K

270K

270K

8

BY

1

C860

C848

2

5

8 D

D

1

0.78V

22

0.1

ROSC

CTRL

1

3

4

R252

1.3V

Q251

1

C828

D831

D832

4

3

PCNT2

Q253

560K

2SA17457

1 OUT

4

BATTERY

+4.5V

1

HRB0103B HRB0103B

VSS

C838

2

RN4904

2 VDD

3 N.C.

TERMINAL,–

4 N.C.

3

D822 HRB0103B

C825 C834

C833 0.1

0.1

C844 10/6.3

5

1

0.1

IC251

TP804

2

IC842

5

1

1

0.1

R833

R821

Q254

S-80808LNP

C837

C836

D821

C832 47

62GR2522

2.2K

2SA1832 GR

0.1

5.38V

R254 R274 RESET

1

0.47

D1FH3

2.5V

Q821

4.81V

R271

L821

1M

56K

470K

C822

REGULATOR

HN1C01FU

5.39V

D IC821 10∝H

R822

R255

R259

C823 220/4

22/6.3

G

C821

100K

1

6

560K

2.2K

R275

C272

R273 47K

S

2

5

R258

C253

15K

0.1

3.3

3

4

+B

330K

0.01 R277 R276

C274

0.1

2.2K

120K 4

3

PLVBAT

-

C270

IC821 CPH3413 N-CH MOS FET

5

+ 2

R278

C273

1

R272

1

BATON

IC271

IC822 IR3M14N DC/DC CONVERTER

R256

R257

1M

22

0.1

470K

CONTROL

IC841 XC6372C281PR 2.8V UP CONVERTER

100K

75S54FU

TERMINAL

IC851 CPH3413 N-CH MOS FET

CHGCNT

OP AMP.

TP805

IC852 IR3M14N DC/DC CONVERTER

R282

R281

47K

1K

C292

GND

VCCMICOM

0.01

R291

TERMINAL,–

STDCK

2.2K

TP806

R292

C291

1

100K

7 8 9 10 11 12

Figure 31 SCHEMATIC DIAGRAM (2/2)

– 31 –