Sharp MD-MT821(GL) Service Manual Download

Page: 31 / 52

MD-MT821/W

– 31 –

• The numbers

are waveform numbers shown in page 37.

Figure 31 SCHEMATIC DIAGRAM (2/4)

P30

P31

P32

R422 100K

L204

R207

680

6 7

R458

56K

R457

18K

R456

8.2K

R455

5.6K

R453

18K

R452

8.2K

R451

5.6K

TP461

TP463

TP462

TP459

TP458

TP457

TP456

TP455

TP454

TP451
TP452
TP453

IC401

IX2792AF

SYSTEM

MICROCOMPUTER

100

99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
80
79
78
77
76

L202

TP481

TP482

TP483

TP485
TP484

C481

0.1

TP486

TP402

TP414

C200

IC200

62FP2002

POWER DRIVE

C202

47/6.3

TP212

C204

0.47

TP211

TP487

TP204

TP400

TP412

IC404

SN1G00DC

NAND GATE

TP413

TP202

C602

C601

L602

L601

TP207

R426 22K

TP417

TP416

TP405

TP406

R406

100K

R405

10K

TP205

R222

XL201

33.8688MHz

C211

5P(CH)

C212

8P (CH)

CK207

TP203

CK224

CK222

IC202

16 BIT D-RAM

24
23
22
21
20

18
17
16
15
14
13

L604

C603

C401

0.1

XL401

R425 22K

R424 22K

R423 22K

R407 10K

TP404

TP403

TP415

TP401

SW401

EJECT

TP410

TP407

TP409

TP411

R412

10K

R411

100K

IC402

S29L294A

EEPROM

R415

TP408

R413

R414

TP206

C207

0.1

TP209
TP210

CK201
CK202
CK203

CK206

CK205

CK204

R205 680K

IC201

LR37811

ENDEC

LSI

100

50
49
48
47
46
45
44
43
42
41

39
38
37
36
35
34
33
32
31
30
29
28
27
26

TP201

TP208

C201 22/6.3

TP200

C122

270P

(CH)

C121

270P

(CH)

C124

390P

C123

390P

TP139

103

22K

R104

22K

R102

22K

R101

22K

75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51

25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10

9 8 7 6 5 4 3 2 1

7
6
5
4
3
2
1

CN482

CN451

C774

C773

0.22

IC771

TK71225M

2.5V REGULATOR

4 3

2
1

C775

0.01

C507

10/6.3

C504

3.3/10

C503

3.3/10

C508

C500 10/6.3

IC501

AK4519VF

AD/D

CONVER

TER

R500

4.7

C505 0.001

C506 0.001

4 3 2 1

R482

33K

R481

33K

L100

R206

270K

1
2
3

74
75

1
2

53
52
51

C206

IC203

62FP2002

2V REGULATOR

L771

100

C762

2.2

C761

2.2

C771 47/6.3

TP771

C868

C869

47/6.3

TP772

C759 0.027

R756

27K

C760 0

027

R757 27K

L87

0.47

(

C836

0.1

D836

R826

220K

C823

0.1

R821 100K

C831

C821

56P

(CH)

R823

100K

R852 100K

R851

10K

C858

47P(CH)

C859 100P(CH)

R858 33K

C826 220/4

C825

2.2

D821

F10J2E

L821

R825 10M

R824 270K

C822

10P

(CH)

D851

1SS389

R857

100K

C854

0.01

L851

4.7

IC851

NDS331N

POWER DRIVE

C856

D852

U1FWJ44N

L852

R855

300K

C857

C853

47P(CH)

R853

300K

4 3 2 1

L862

100

C203

0.1

R204

C205

0.1

C100 10/6.3

R502

470

R501

470

C502 0.0022

C501 0.0022

C511

L500 22

TP500

D861

F10J2E

C861

L600

2.2

C600

22/6.3

TP610

C605 0.1

C604

R408

100K

SW402

HOLD

SW403

DISC IN

TP441

DADATA

HKEY2
HKEY1

HSTOP

HPLAY

HREC

ELON

ELL

ATA

PBAULT

INNSW

BCLK
LRCK

DAPON

ADPON

DIN

DFCK

ADDATA

OPTCNT

EMPH1

ATA

DISCPR

SPIN

DRY

DCI

INN

RKEY

CIN

PDCNT

HDON

TEMP

LDVAR

RFLAT

OPICGA

LDON

INPGCK

INPGIN

MCPGIN

EMPH0

PBMUTE

BEEP

USCLK

RCAULT

RCPCNT2

PCNT1

HKEY2
HKEY1

HST

DSPD

DSPSTB

DSPSCK

SENSE

FOK

SYD7

SYRS

SYRD

SYWR

SYD6

SYD5

SYD4

SYD3

SYD2

SYD1

SYD0

XRT

DINT

MCCK

CIN

SENSE

FOK

2.0V

PF4

SCK0

P33

PE3

SPWDS

P14

P24

DINT

+2.7V

+2.5V

(JOG1)

(JOG0)

VCC

GND

A10

JPNP

VCC

VSS

EXT

VCC

uSTBY

NMI

MD2

WDT

MD1

MD0

UZOUT

RCPCNT

VSS

EEPD

T+

T–

F+

F–

PCNT1

PBOPON

RCLAT

PBLAT

RADAT

RACLK

RFLAT

OPICGA

RMD

PLVDRY

PLVDCI

PLVINN

MCMON

GND

I/O4
I/O3

CAS

A8
A7
A6
A5
A4

VCC

RAS

I/O2

I/O1

EFMO

TCRS

RAA2

RAA1

RAA0

RAA4

RAA5

RAA6

RAA7

RAA8

RAOEX

RACASX

RAD2

RAD3

VDD2

DGND

RAA9

RARASX

RAWEX

RAD1

RAD0

VDD1

DGND

VDD1

DGND

BIN

EIN

FIN

AIN

GND

TCG

SLDRR

SLDRF

TRDRR

TRDRF

X176K

TEST2

FODRF

FODRR

TEST0

TEST1

WBI

VBA

SYSD7

SYSD6

SYSD5

SYSD4

SYSD3

SYSD2

SYSD1

SYSD0

RSTX

DINTX

MCCK

COUT

SENSE

FOK

SFSY

SBSY

SBO

SBCK

TEMON

EMPH1

OPTCNT

APON

ADPON

VXI

X1I

X1O

DIN

DOUT

VDD3

DGND

LRCK

BCLK

PLCK

ACRCER

RAA10

CKSTP

PDCNT

INPGCK

INPGI

MCPGI

TEST1
TEST0

KHOLD

PLA

RPLA

DSPSCK

DSPD

DSPSTB

DISCPR

EJSW

DCNT1

GND

VCC

PRTCT

GND

VCC

RKEY

AVCC

FOK

SENSE

RESET

VCC

EMPH0

SWPUP

INNSW

VSS

LDON

SYRS

SYRD

SYWR

SYD7

SYD6

SYD5

SYD4

SYD3

SYD0

XRST

EEPK

EPCS

AVSS

Vref

LDVAR

TEMP

HKEY2
HKEY1

EMPH0

EFMO

LDCNT2

LDCNT1

DSPDAT

DSPSCK

DSPSTB

VCC2R5V

SPDRR

SPDRF

SLDRR

SLDRF

TRDRR

TRDRF

FODRR

FODRF

X176K

DINT

FEMON

DADATA

ADDATA

DFCK

TOTMON

EFMMON
AVCC
EFMI

SYRS

SYWRX
SYRDX

RAA3

ELONL

REC

ELONH

VSS

IRQ1

APQD

IRQ0

HDON
PCNT2

SDT

SCLK

LRCK

MCLK

AINL

VCMR

VCML

AINR

VRAD

VRD

GND

VCOM

OUTR

DEM0

OUTL

SDTI

DGND

PWD

CIN
SPIN

SYD2

SYD1

LDCNT2
LDCNT1
X700KO

SPDRR

SPDRF

VCCDRAM

PBMUTE

RESET

BEEP

RCA

Buf

VREF

LVS

OSC

OSCPLS OSCI

OSC

RDB

Buf

DELAY

–

OSCI

VCC

VREF

EIP2

EIN2

EO2

PVCC

PGND

LVCC

CTL2

CHG1

PGND

VREG1

REG1

OD1

GND

EO1

EIN1

EIP1

CTL1

RDB

OSC

DCNT1

2.0V

SYRS

SYRD

SYWR

SYD7

SYD6

SYD5

SYD4

SYD3

SYD2

SYD1

SYD0

XRT

VCCENDEC

VPD

OPEN

DEM1

CMODE

IC202 IX2723AF Serrial 903xxxxx

IX2735AF Serrial 904xxxxx~

Summary of Contents for MD-MT821(GL)

Page 1: ... 30 WAVEFORMS OF MD CIRCUIT 37 TROUBLE SHOOTING 38 FUNCTION TABLE OF IC 41 PARTS GUIDE EXPLODED VIEW PACKING OF THE SET MD MT821 ONLY SERVICE MANUAL SHARP CORPORATION No S4913MDMT821 This document has been published to be used for after sales service only The contents are subject to change without notice In the interests of user safety the set should be restored to its original condition and only ...

Page 2: ...e laser beam 1 When the cabinet has been removed the power is turned on without a compact disc and the Pickup is on a position outer than the lead in position the Laser will light for several seconds to detect a disc Do not look into the Pickup Lens 2 The Laser Power Output of the Pickup inside the unit and replacement service parts have already been adjusted prior to shipping 3 No adjustment to t...

Page 3: ...t socket Line optical digital microphone powered by the main unit Output socket Headphones impedance 19 ohms MT821 remote control unit Output socket Earphones impedance 32 ohms MT821W remote control unit MiniDisc Recorder Type Portable MiniDisc recorder Signal readout Non contact 3 beam semi conductor laser pick up Audio channels Stereo 2 channels monaural long play mode 1 channel Frequency respon...

Page 4: ...Recording Time Indicator 15 Total Track Number Indicator 16 Record Track Mark Button 17 Mode Button 18 Bass Delete Button 19 Enter Fast Play Synchro Button 20 Volume Cursor Up Button 21 Volume Cursor Down Button 22 Edit Auto Mark Time Mark Button 23 Display Character Select Button 24 Fast Reverse Fast Forward Record ing Level Control Name Select Shuttle Switch 25 Stop Power Off Button OFF 26 Play ...

Page 5: ...charged the whole battery indicator will flash Re charge the battery or replace the alkaline battery with a new one When the battery has run completely out BATT EMPTY main unit and Lo BATT remote control unit will appear Then the power will be disconnected automatically Notes When using the unit with an alkaline bat tery or a rechargeable battery the battery indicator will not correctly display th...

Page 6: ... When the unit is moved from a cool place to a warm place When the unit has condensation inside the disc signals cannot be read and the unit may not function properly If this happens remove the disc The condensation should evaporate in approximately 1 hour The unit will then function properly When the number of tracks used reaches the limit regardless of the remaining recording time further record...

Page 7: ...g the analog cable Change the stop position of the track and then try editing it Re record or replace it with another recordable disc Check the number of tracks If the sound you hear is not right try recording again Replace the disc with another recordable disc Connect the digital cable securely Replace it with another recordable disc Return the HOLD switch to its original position Turn off the po...

Page 8: ...f it only has an alkaline battery in it Back of the MD recorder Parte posterior de la grabadora de MD AC power Alimentación de CA Open Abrir Press Pulsar AC 120V 60Hz 120V CA 60Hz 1 2 O P E N O P E N O P E N O P E N O P E N 3 Printed in Japan Impreso en Japón Asegúrese de que se ha insertado una batería completamente cargada No emplee el aparato si sólo tiene una pila alcalina instalada Mark Marca...

Page 9: ...cally and playback will start from the first track Auto play function La alimentación se conectará automáticamente y la reproducción empezará desde la primera pista Función de reproducción automática Load a MiniDisc in the direction indicated by the arrow on the MiniDisc with the label side facing up To interrupt playback Para interrumpir la reproducción Press the 06 button during playback To resu...

Page 10: ... 3 Caution Carefully handle the main PWB and flexible PWB After removing the flexible PWB 1 for the optical pickup from the connector do not touch directly the front end of flexible PWB with your hand so as to prevent damage of optical pickup by static electricity Figure 10 4 B1 x2 ø1 4x2mm B1 x2 ø1 4x2mm A1 x2 ø1 4x2mm A1 x2 ø1 4x2mm A1 x1 ø1 4x2mm Bottom Lid OPEN Lever Top Cabinet Center Cabinet...

Page 11: ... solder joint B1 x 2 of lift motor lead wire 2 Remove the screw B2 x 1 pc and remove the flexible PWB 3 Remove the screw B3 x 1 pc and remove the lift motor Note Take care so that the motor gear is not damaged If the gear is damaged noise is caused How to remove the sled motor See Fig 11 3 1 Remove the stop washer C1 x 1 pc and remove the drive gear C2 x 1 pc 2 Remove the screws C3 x 2 pcs and rem...

Page 12: ...st 3 TEST PLAY Mode Continuous playback from the specified address is performed 1 line 10 lines or 384 lines manual jump is performed C1 error rate display pit section ADIP error rate display groove section The temperature correction is performed only when servo start is performed but the posture correction is not performed during continuous playback 4 TEST REC Mode Continuous record from the spec...

Page 13: ...ment value and set value of adjustment items for AUTO1 and MANUAL 1 are displayed If the VOL UP button is pressed during setting indication the setting increases If the VOL DOWN button is pressed the setting reduces And then the new setting is stored in the RAM When the VOL UP DOWN button is held down the setting changes continuously one cycle being 100 ms In this operation the setting change is p...

Page 14: ...held down the setting changes continuously one cycle being 100 ms When the VOL UP DOWN button is pressed in the TEST REC mode or continuous record mode the laser record power changes Servo gain changes also according to record power After the laser record power is indicated for one second the address indication is restored R P W _ Address Laser power cord Operation is disabled if the premastered d...

Page 15: ...ate TM is displayed Temperature code Temperature reference 3 Once press SKIP UP and determine the displayed microcomputer TEMP input AD value TPin is displayed TEMP input AD value 4 At the ambient temperature determine the temperature corrected value from the temperature measurement value correction table 5 Determine the temperature reference using the following formula Temperature reference Micro...

Page 16: ... 1 _ 1 1 H C T 2 _ 4 0 H C T 3 _ 3 0 H R C 0 _ C 0 H R C 1 _ F E H S Y C _ A 6 H P W C _ 1 2 H P W L _ 2 6 H D R 1 _ 0 9 H D R 2 _ 8 5 H I N 1 _ 5 4 H I N 2 _ 9 D H I N H _ 6 4 H D R H _ 7 4 H P L E _ 9 6 H R C E _ 9 4 H E L T _ 7 0 H S L T _ 4 4 H S P M _ 0 0 H M S L _ 0 0 H U S 0 _ 0 0 H U S 1 _ 0 0 H U S 2 _ 0 0 H Item display Set values F G _ _ 6 3 H F F 1 _ 7 0 H F F 2 _ E 8 H F Z H _ E D H F...

Page 17: ... A N U 1 ATT manual adjustment menu M A N U 2 Error history display menu E D A T A Test mode normal playback menu N O R M A L Preautomatic Adjustment menu Preadjustment error adjustment value output During preadjustment adjustment Adjustment error Normal end Preadjustment normal end adjustment value output During ATT automatic adjustment PLAY PLAY A U T O 1 Preautomatic Adjustment A D J O K A D J ...

Page 18: ...tative measurement Measurement value E signal offset EINO tentative measurement Measurement value F signal offset FINO tentative measurement Measurement value Laser ON Play Power RF side focus gain coarse adjustment Gain setting A ATT focus tentative setting ATT setting B ATT focus tentative setting ATT setting RF side pit section tracking gain adjustment Gain setting Pit section adjustment COUT l...

Page 19: ...H SKIP UP SKIP DOWN E H SKIP UP SKIP DOWN F H SKIP UP SKIP DOWN T H SKIP UP SKIP DOWN A L SKIP UP SKIP DOWN B L SKIP UP SKIP DOWN E L SKIP UP SKIP DOWN F L SKIP UP SKIP DOWN ATT manual adjustment menu Temperature code display Temperature code Laser ON Play Power Pit section E ATT tracking setting ATT setting Pit section F ATT tracking setting ATT setting High reflection A ATT focus setting Low ref...

Page 20: ... SKIP UP SKIP DOWN A L SKIP UP SKIP DOWN B L SKIP UP SKIP DOWN E L SKIP UP SKIP DOWN F L SKIP UP SKIP DOWN T H SKIP UP SKIP DOWN P T G SKIP UP SKIP DOWN G T G SKIP UP SKIP DOWN R C G SKIP UP SKIP DOWN R F G SKIP UP SKIP DOWN P C H SKIP UP SKIP DOWN G C H SKIP UP SKIP DOWN S A SKIP UP SKIP DOWN Continued to the next SKIP UP SKIP DOWN B ATT focus initial setting E ATT tracking initial setting F ATT ...

Page 21: ... continued playback mode jump of specified number of lines occurs in the external periphery direction If the key is held down jump occurs continuously 100 ms cycle When the SKIP DOWN button is pressed in the continuous playback mode jump of specified number of lines occurs in the internal periphery direction If the key is held down jump occurs continuously 100 ms cycle 0 9 5 0 H Continuous record ...

Page 22: ...lay TIME min TIME sec U 2 When the STOP button is pressed in specific menu the TEST MODE STOP state is set Error history display menu Error history 0 display Error code Error history 1 display Error code Error history 2 display Error code Error history 3 display Error code Error history 4 display Error code Error history 5 display Error code Error history 6 display Error code Error history 7 displ...

Page 23: ... menu the TEST MODE STOP state is set When the DISP button operation is performed in the specific state the menu changes to TEMP SETTING menu In the specific state the setting changes in the range of 00h to FFh when the VOL UP DOWN button is pressed The upper limit varies depending on the items When the MODE button is pressed in each state the set digit is changed Focus setting menu PLAY F o c u s...

Page 24: ...ding on the items T G R SKIP UP SKIP DOWN S C t SKIP UP SKIP DOWN S C m SKIP UP SKIP DOWN C L p SKIP UP SKIP DOWN C L r SKIP UP SKIP DOWN J P I SKIP UP SKIP DOWN K 1 0 SKIP UP SKIP DOWN Spin setting menu PLAY S p i n Spin Setting S P G S P i SKIP UP SKIP DOWN S P m SKIP UP SKIP DOWN S P o SKIP UP SKIP DOWN S P 1 SKIP UP SKIP DOWN S P 2 SKIP UP SKIP DOWN S P 3 SKIP UP SKIP DOWN S P 4 SKIP UP SKIP D...

Page 25: ...IP UP SKIP DOWN When the STOP button is pressed in specific menu the TEST MODE STOP state is set When the DISP button operation is performed in the specific state the menu changes to TEMP SETTING menu In the specific state the setting changes in the range of 00h to FFh when the VOL UP DOWN button is pressed When the MODE button is pressed in each state the set digit is changed Adjustment setting m...

Page 26: ... specific setting display state the setting change digit changes when the P MODE button is pressed 1st digit initial value 2nd digit P MODE P MODE In the specific state the setting changes in the range of 0h to Fh when the VOL UP DOWN button is pressed When the MODE button is pressed in each state the set digit is changed Control setting menu PLAY C T R L Control Setting C T 0 C T 1 SKIP UP SKIP D...

Page 27: ...P button is pressed in specific menu the TEST MODE STOP state is set When the DISP button operation is performed in the specific state the menu changes to TEMP SETTING menu In the specific setting display state the setting change digit changes when the P MODE button is pressed 1st digit initial value 2nd digit P MODE P MODE In the specific state the setting changes in the range of 0h to Fh when th...

Page 28: ... a symbol is microfarad As to electro lytic capacitor the expression capacitance withstand volt age is used CH TH RH UJ Temperature compensation ML Mylar type The indicated voltage in each section is the one measured by Digital Multimeter between such a section and the chas sis with no signal given Parts marked with are important for maintaining the safety of the set Be sure to replace these parts...

Page 29: ...DC JACK 4 5 5V 2 9 4 1V 3 4V VCC 2 35V DISPLAY UNIT OPERATION UNIT IC901 3 PHASE BRUSH LEESS DRIVER BA6966FV IC703 AUDIO AMP IR3R54N IC701 AUDIO AMP IR3R54N IC601 PWM DRIVER 17A39TD VM VCC EEPROM 4 5V VCC VS IC202 16BIT D RAM 2 5 4 5V OPTICAL IN UNIT OPTICAL IN J701 LINE IN J702 MIC IN READY FOR PLUG IN POWER SERIES REGULATOR 1 6 19 20 17 16 13 24 26 29 31 6 8 5 9 10 14 23 27 28 32 13 14 24 42 40 ...

Page 30: ... 20 19 18 17 16 15 14 13 R106 56K CK108 CK107 TP133 TP132 TP131 TP130 C112 0 033 C111 0 0033 CK112 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 C203 0 1 R204 1K C205 0 1 C100 10 6 3 R907 180K R908 100K C902 0 01 R909 10K L651 56 IC651 LB1930M MOTOR DRIVER 10 9 8 7 6 5 4 3 2 1 L600 2 2µH C600 22 6 3 TP610 C605 0 1 C604 1 R408 100K SW402 HOLD SW403 DISC IN 3 2 1 4 TP441 C911 0 1 NC NC NC...

Page 31: ...2µH N R825 10M R824 270K C822 10P CH D851 1SS389 R857 100K C854 0 01 L851 4 7µH IC851 NDS331N POWER DRIVE C856 1 D852 U1FWJ44N L852 10µH R855 300K C857 10 C853 47P CH R853 300K 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 L862 100µH C203 0 1 R204 1K C205 0 1 C100 10 6 3 R502 470 R501 470 C502 0 0022 C501 0 0022 C511 1 L500 22µH TP500 D861 F10J2E C861 1 L600 2 2µH C600 22 6 3 TP61...

Page 32: ...1 C715 0 1 TP703 TP705 TP708 TP701 TP709 TP704 TP702 TP707 R715 100K R716 100K J701 OPTICAL LINE IN 9 8 7 6 5 4 3 2 1 R725 100 C725 3 3 10 R482 33K R481 33K R713 10K R765 R766 R717 1K C703 0 01 R702 22 R729 2 7K R730 2 7K C721 3 3 10 C722 3 3 10 C738 R728 1K C731 0 22 R727 8 2K C723 0 001 R723 6 8K R724 6 8K C724 0 001 C752 0 082 C751 0 082 4 1 J801 DC JACK 3 2 1 C206 1 IC203 62FP2002 2V REGULATOR...

Page 33: ...2 4 5 6 7 8 3 1 2 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 3 1 2 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 3 1 2 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 3 1 2 4 5 6 3 0 88V 2 5V 1 27V 0V 1 25V 1 25V 1 26V 1 25V 1 26V 1 3V 1 58V 2V 0V 0V 0V 0V 1V 0V 0V 0V 0V 0V 0V 0V 0V 0 49V 1 44V 1 13V 2 56...

Page 34: ...37 IC202 R154 C161 C508 R500 C507 C200 XL401 IC200 R351 C357 C354 C353 R905 R920 IC353 L608 L609 L610 C622 C608 C610 1 1 1 5 10 15 20 25 26 30 35 40 45 50 51 55 60 65 70 75 76 80 85 90 95 100 1 4 4 5 5 8 8 5 10 7 8 14 C609 IC351 IC601 C651 C203 L651 1 5 10 15 25 20 30 35 36 18 19 R601 R207 IC501 C506 C505 C501 C502 1 1 6 7 12 13 18 19 24 5 10 15 20 24 12 13 R501 R502 R717 Q711 C211 C212 R222 C511 ...

Page 35: ...3 4 5 22 1 8 7 2 3 4 5 6 1 16 1 22 To Optical Pickup Unit P36 1 D J703 Remote Control Head phones 1 16 To Mechanism Flexible PWB Ass y P36 6 C 1 7 1 13 To Key Switch Flexible Ass y P36 2 E 1 7 To LCD Ass y P36 5 E 3 2 1 J801 DC Jack Terminal Battery 213 Terminal Battery 212 J702 MIC IN MAIN PWB A TOP VIEW Extension battery Terminal 217 4 3 2 1 6 9 8 3 1 5 4 2 7 2 3 4 1 3 1 4 5 L711 L712 L713 L704 ...

Page 36: ...d Flexible PWB 23 Magnetic Head 30 Mechanism Flexible PWB Ass y 8 M902 Sled Motor M903 Lift Motor PH901 Phote Interrupter M901 Spindle Motor SW902 Disc Protect To Main PWB CN601 To MAIN PWB P35 10 A CN482 LCD Ass y 219 Key Switch Flexible PWB Ass y 218 To MAIN PWB P35 9 A CN451 CN101 To MAIN PWB P35 7 H P35 10 H ...

Page 37: ...1 0 000V CH2 0 00V Main 1K Zoom 1K CH3 0 00V CH4 0 00V Trigger Mode AUTO Type EDGE CH1 Detay 0 0ns Hold OFF MINIMUM T TP201 EFM Stopped CH1 2V DC 10 1 500ms div 500ms div 1 MORM 200MS s 9 1994 12 15 08 57 26 Filter Offset Record Length Smoothiing OFF BW FULL CH1 0 00V CH2 0 00V Main 10K Zoom 10K CH3 0 000V CH4 0 0V Trigger Mode NORMAL Type EDGE CH1 Detay 0 0ns Hold OFF MINIMUM T TP201 EFM TP210 TE...

Page 38: ...Gently clean the lens with a lens cleaning tissue and a small amount of isopropyl alcohol Do not touch the lens with the bare hand Is the power supply turned on when the remote control button or main unit button is pressed No Perform the check stated in item Power is not turned on when the PLAY button is pressed Perform the check stated in item Abnormal display No Yes Does the display operate norm...

Page 39: ...e display advance Yes Position check in INNER mode Check IC201 and IC202 connection line Is the lead in photointerrupter set to OFF when the optical pickup moves to the innermost periphery in NORMAL mode Is TP660 in H level Check the lead in photointerrupter mechanical flex PWB soldering and CN601 connection No Ia an attempt to repeat repeatedly the TOC part performed on the low reflection disc Ye...

Page 40: ...Check whether disc is record inhibited No Does the RF waveform of TP201 appear when playback is Does level of pins 86 of IC401 and pin 17 of IC101 change depending on record and playback Is RF pattern output from IC201 pin 50 Yes No Check for soldering failure of IC201 No Check periphery of IC401 and IC101 Check whether there is any damage in IC101 periphery of laser diode Yes Check for defects of...

Page 41: ...ion detection input 34 PC2 _INPGI Input Line digital plug insertion detection 35 PC3 INPGCK Input Line digital plug type detection 36 PC4 RCPCNT Input Output Record circuit power control output 37 PC5 TEST1 Input Test mode setting input 1 38 PC6 TEST0 Input Test mode setting input 0 39 PC7 JPNP Input Kana conversion Kana input existence nonexistence discrimination 40 Vcc VCC Positive power supply ...

Page 42: ...DRY Input Dry battery voltage detection input 80 AN1 PLVDCI Input DC jack voltage detection input 81 AN2 PLVINN Input Lithium battery voltage detection input 82 AN3 RKEY Input Remote control key operation detection input 83 AN4 HKEY1 Input Unit key operation detection input 1 84 AN5 HKEY2 Input Unit key operation detection input 2 85 AN6 TEMP Input Ambient temperature detection input 86 DA1 LDVAR ...

Page 43: ... Cylindrical type without lead wire VC MN Cylindrical type without lead wire VC TV Square type without lead wire VC TQ Square type without lead wire VC CY Square type without lead wire VC CZ Square type without lead wire VC J The 13th character represents capacity difference J 5 K 10 M 20 N 30 C 0 25 pF D 0 5 pF Z 80 20 If there are no indications for the electrolytic capacitors error is 20 Resist...

Page 44: ...V C753 754 VCKYTV1CF105Z J AB 1 µF 16V C755 VCKYCY1EB103K J AA 0 01 µF 25V C756 757 VCKYTV1AB684K J AC 0 68 µF 10V C758 VCSATA1AJ335M J AB 3 3 µF 10V Electrolytic Tantalum C759 760 VCKYCY1CB273K J AA 0 027 µF 16V C761 762 VCKYTV1CF225Z J AC 2 2 µF 16V INTEGRATED CIRCUITS IC101 VHIIR3R55 1 J AQ RF Signal Processor IR3R55 IC200 VHI62FP2502 1 J AE Power Drive 62FP2002 IC201 VHILR37811 1 J BB ENDEC LS...

Page 45: ...W R481 482 VRN CY1JD333D J AA 33 kohms 1 16W 1 Metal Film R492 VRS CY1JB102J J AA 1 kohm 1 16W R500 VRS CY1JB4R7J J AA 4 7 ohms 1 16W R501 502 VRS CY1JB471J J AA 470 ohms 1 16W R601 VRS CY1JB563J J AA 56 kohms 1 16W R701 702 VRS CY1JB220J J AA 22 ohms 1 16W R703 VRS CY1JB104J J AA 100 kohm 1 16W R711 712 VRS CY1JB562J J AA 5 6 kohms 1 16W R713 714 VRS CY1JB103J J AA 10 kohm 1 16W R715 716 VRS CY1J...

Page 46: ... BL for Taiwan TGANZ1096AF06 J Warranty Card MT821W GL for Taiwan 3 J703 QJAKM0205AFZZ J AH Jack Remote Control Head phones J801 QJAKC0142AFZZ J AE Jack DC M901 RMOTV0524AFZZ J AS Motor Ass y Spindle M902 RMOTV0511AFZZ J AT Motor Ass y Sled M903 RMOTV0512AFM1 J AR Motor Ass y Lift SW401 QSW M0001AWZZ J AD Switch Push Type EJECT SW402 QSW S0948AFZZ J AC Switch Slide Type HOLD SW403 QSW M0172AFZZ J ...

Page 47: ...Bar Code MT821W BL for Central South America Brasil TLABS0478AFZZ J AC Label CPA MT821W TLABZ2560AFZZ J Label Import Company MT821W BL for Taiwan TLABZ2561AFZZ J Label Import Company MT821W GL for Taiwan TLSTS0126AFZZ J Service Station MT821W for Taiwan TLSTS0127AFZZ J Service Station MT821W for Philippines UBAGC0083AFSA J AH Carrying Case UBATI0088AFSA J BD Rechargeable Battery UBNDT0086AFSA J AF...

Page 48: ... G H 1 2 3 4 5 6 Figure 5 MD MECHANISM EXPLODED VIEW 5 M903 M902 M901 503x2 502x3 509x2 501x2 11 505 30 23 510 513 8 2 SW902 8 1 8 8 3 PH901 508 503 508 9 25 17 1 2 16 18 15 512 511 27 504 13 503 5 3 10 29 20 4 28 26 6 7 506 ...

Page 49: ...201 223 229 226 227 228 232 219 218 233 601 604 603x2 603x2 215 210x2 202 206 205 217 208 204 204 4 204 2 204 1 204 3 603x2 603 235 236 203 MD MECHANISM 241 242 231 230 238x2 234 240 603x2 211 216 207 212 214 209 239 213 PWB A 602 222 221 244 246 For MT821W Only For MT821W Only ...

Page 50: ...EL Battery Case Connecting Cord RCA Type AC Adaptor Headphones Remote Control Packing Add SPAKA2704AFZZ Packing Case SPAKC6785AFZZ Pad AC Adaptor SPAKZ0489AFZZ Rechargeable Battery Strap Connecting Cord Optical Type Operation Manual Quick Guide Caution Headphones Not Replacement Item Carrying Case Lid Battery Attention Card ...

Page 51: ...MD MT821 W M E M O 8 ...

Page 52: ...rieval system or transmitted in any from or by any means electronic mechanical photocopying recording or otherwise without prior written permission of the publisher A9904 1565NS HA M SHARP CORPORATION Communication Systems Group Quality Reliability Control Center Higashihiroshima Hiroshima 739 0192 Japan Printed in Japan SC EX ...

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