Sharp MD-R2 Manuel de service

MD-R2– 1 –• In the interests of user-safety the set should be restored to itsoriginal condition and only parts identical to those specified shouldbe u

MD-R2– 10 –REMOVING AND REINSTALLING THE MAIN PARTSMD MECHANISM SECTIONPerform steps 1 to 3 of the disassembly method to remove theMD mechanism.How to

MD-R2– 11 –How to remove the sled motor/loading motor(See Fig. 11-1)1. Remove the screws (D1) x 1 pcs., and remove the sledmotor/loading motor.Caution

MD-R2– 12 –ADJUSTMENTTEST MODE1) Mode there are 5 kinds TEST MODE as below.MODE PUSH KEYA) MD TEST MODE ENTER PLAYB) AUDIO TEST MODE CUE REVIEWC) KEY

MD-R2– 13 –KEY NAME ILLUMINATESEGMENTTIMER 10 ROW DOT INPUT SELECT TOCDISPLAY 11 ROW DOT EJECT 7 ROW DOTREVIEW ALL PLAY 4 ROW DOTCUE PM STOP 5 ROW DOT

MD-R2– 14 –• Test Mode1. AUTO pre-adjustment mode • Automatic pre-adjustment is performed. (After adjustment the grating adjustment mode is set.)• The

– 15 –MD-R2Step 1 Testmode STOP state [ t s m e ]Step 2Press the ENTER button three times.RESULT sub-menu [ _ R S T _ Y O B I _ ]Step 3 Press once

MD-R2– 16 –Step 1 Testmode STOP state [ t s m e ]Step 2Press the ENTER button four times.RESULT menu [ _ R S T U L T _ _ _ ]Step 3 Press once the M

– 17 –MD-R2• If the jog key upward/downward is pressed during setting indication, the setting increases/decreases, and the new setting is stored in RA

MD-R2– 18 –Step 9 Press once the ENTER button. Comparison level setting in case of FOK generation [ F O K L E V f _ ](when focus is "ON")

– 19 –MD-R212.2 ~ 15.8 -315.9 ~ 19.6 -219.7 ~ 23.2 -123.2 ~ 26.8 026.9 ~ 30.7 +130.8 ~ 34.3 +234.4 ~ 37.9 +3Step 18 Press once the ENTER button. TCRS

MD-R2– 2 – GeneralType: MiniDisc deckSignle readout: Non-contact, 3-bean semi-conductorlaser pick-upAudio channels: Stereo 2 channels/monaural (lon

MD-R2– 20 –e) TEMP settingStep 1 Testmode STOP state [ t s m e ]Step 2Press the ENTER button seven times.EEPROM setting menu [E E P R O M _ S E T]S

– 21 –MD-R28. TEST-PLAY modeStep 1 Testmode STOP state [ t s m e ]Step 2Press the DELETE/CLEAR button.TEST-PLAY menu [ T E S T _ P L A Y _ ]Step 3

MD-R2– 22 –10. INNER modeStep 1 Testmode STOP state [ t s m e ]Step 2Press the NAME/TOC EDIT button.INNER menu [ _ _ I N N E R _ _ ]Step 3 Press on

– 23 –MD-R2Figure 23-1 Optical Pickup Grating DeviationMeasuring Method Mechanism Adjustment1. Optical pickup grating inspecting methodAfter the autom

MD-R2– 24 –• Defect occurred successively 10 times during REC-PLAY.• As a result of occurrence of defect during REC-PLAY therecordable cluster became

– 25 –MD-R2• UTOC was read but total TNO and the number of characters ofNAME was 0?• Focusing error was caused by shock during REC-PLAY.• Although UTO

MD-R2– 26 – E2-PROM Data ListFocus settingItem indicationInitial SettingF G 9 7 HF F 1 9 E HF F 2 E 0 HF Z H L E V E D HF O K L E V n 0 8 HF

– 27 –MD-R2 E2-PROM Setting Mode ChartFigure 27ENTERRECS P K L E V m _A D J T T M _ _ENTERENTERRECH D E Q A D _ _L D E Q A D _ _ENTERENTERRECG D E Q A

MD-R2– 28 – Figure 28 BLOCK DIAGRAM (1/2)D6.5/4.75 ~ 5.25VMECHAN1SM6.5/4.75~5.25VD3.2VSYSCLKDVDDDVDDD3.2VDIGITAL3.2VD3.2VD4.3VD4.3VD3.2VD4.3VD3.2VBACK

MD-R2– 29 – Figure 29 BLOCK DIAGRAM (2/2)LINE INJ101IC101NJM4560DOPE AMP+7V+7V-7V-7VREC VOLVR901SYSCLKAD DATALRCLKBLCKDA DATAMODECLKDATAQ601Q

MD-R2– 3 –NAME OF PARTS Front panel1. TOC Indicator: TOC2. Total Time Indicator3. Disc Name Indicator4. Track Name Indicator5. Date Indicator6. Lev

MD-R2– 30 –ABCDEFGH123456NOTES ON SCHEMATIC DIAGRAM can be found on page 43.Figure 30 SCHEMATIC DIAGRAM (1/6)GNDVDDGNDVDDINVERTEROPE AMP.2365171431211

MD-R2– 31 –78 9 10 11 12Figure 31 SCHEMATIC DIAGRAM (2/6)OPE AMP.2112345678901114817236517184652332123456789MAIN PWB-AP32 1 - DTO DISPLAY PWBCNP902A

MD-R2– 32 –ABCDEFGH123456Figure 32 SCHEMATIC DIAGRAM (3/6)NOTES ON SCHEMATIC DIAGRAM can be found on page 43.3213211321111133987654322298723456MD DATA

MD-R2– 33 –78 9 10 11 12Figure 33 SCHEMATIC DIAGRAM (4/6)3214948987654321RESETSYSTEMMICROCOMPUTER–31VVccVREFAVSSVEEUDIG01RESETXCINXCOUTXINXOUTVSSREVI

MD-R2– 34 –NOTES ON SCHEMATIC DIAGRAM can be found on page 43.Figure 34 SCHEMATIC DIAGRAM (5/6)ABCDEFGH12345612345123456789101112131415161718192021222

MD-R2– 35 –78 9 10 11 12Figure 35 SCHEMATIC DIAGRAM (6/6)The numbers 1 to 23 are waveform numbers shown in page 44, 45.1234567891020191817161514131

MD-R2– 36 –ABCDEFGH123456:Through-hole where the top, bottom and +B patterns are connected.:Through-hole where the top, bottom and ground patterns are

MD-R2– 37 –78 9 10 11 12Figure 37 WIRIMG SIDE OF P.W.BOARD (2/6)P39 8 - ATO MAIN PWBCNP301JC171R1805C1803R1947Q1807C1802C1801C1917R1801R1759R1758R19

MD-R2– 38 –ABCDEFGH123456Figure 38 WIRIMG SIDE OF P.W.BOARD (3/6)BCEBCEECBMAIN PWB-ABCEBCEBCE15161718192021222324C518C22C222C221D507D506D301R301

MD-R2– 39 –78 9 10 11 12Figure 39 WIRIMG SIDE OF P.W.BOARD (4/6)ECB BCEBCEBCEECBECBBCE12345678910111213141516171819202122232428P37 8 - ATO MAIN PW

MD-R2– 4 –OPERATION MANUAL Names of controls1. Remote Control Transmitter Window2. Direct Key Buttons3. Play Mode Button4. Music Scan Button5. Inpu

MD-R2– 40 –ABCDEFGH123456Figure 40 WIRIMG SIDE OF P.W.BOARD (5/6)C906C907IC902X902R910C920C922C923R903L901C908C909R906R923R920R972Q901RA919RA928R909X9

MD-R2– 41 –78 9 10 11 12Figure 41 WIRIMG SIDE OF P.W.BOARD (6/6)MD PICKUP UNITMD MECHANISM SWITCH PWB-CCN1601P37 12 - ETO MD MAIN PWBCW1901CNP1252CN

MD-R2– 42 –VOLTAGE (MD MAIN PWB)5V5V43VBCEPINNO.VOLTAGEQ18010V0V0.15VBCEPINNO.VOLTAGEQ18020V0V3.1VBCEPINNO.VOLTAGEQ18033.95V3.2V3.3VBCEPINNO.V

MD-R2– 43 –NOTES ON SCHEMATIC DIAGRAM• Resistor:To differentiate the units of resistors, such symbol as K andM are used: the symbol K means 1000 ohm a

MD-R2– 44 –WAVEFORMS OF MD CIRCUIT1997 / 08 / 04 09:30:15TTP1274(EFMMON)NORM: 100M S/sCH1 500mVAC 10:1500ns/divT1Record LenSMOOTH OFFBW F

– 45 –MD-R2Record LenSMOOTH OFFBW FULLCH1 0.000VCH2 0.000VMain 10KHold OffMINTriggerAUTOEDGE  CH2Zoom 100CH3

MD-R2– 46 –TROUBLE SHOOTINGIs power turned on when the remote control or main unitPOWER button is pressed?NoCheck as stated in item "POWER turnin

– 47 –MD-R2• Disc loading is not normal.Is disc loaded when it is inserted?NoYesNoCheck IC1401.NoCheck CNP1601 and SW1956.YesNoCheck CNP1604 and IC16

MD-R2– 48 –Yes• Normal playbackIs initialization performed normally when high reflection disc isplayed back?Does disc rotate normally?No NoCheck IC120

– 49 –MD-R2• Record and playback operationInsert the low reflection disc, and after verifying the audio output in the normal mode playback set the re

MD-R2– 5 –(Continued)Setting the timeAfter step 7, described in the “Setting the date” section8 Set the “hour” using the jog dial.When you turn the jo

MD-R2– 50 –• Disc motor fails to runNoCheck soldering joint and parts of pins 24 and 25 of IC1201, andperipheral circuit.Does waveform appear on the

– 51 –MD-R2IC901 RH-iX0237AFZZ: System Control Microcomputer (IX0237AW) (1/2)FUNCTION TABLE OF ICPin No.FunctionPort NameInput/OutputTerminal NameIn

MD-R2– 52 –IC901 RH-iX0237AFZZ: System Control Microcomputer (IX0237AW) (2/2)Pin No.FunctionPort NameInput/OutputTerminal Name72-80 P97/SEG23- S0-S8

– 53 –MD-R21 RF1 RF signal input terminal 1 Input of RF signal output of pickup2 RF2 RF signal input terminal 2 Input of RF signal output of pickup3 R

MD-R2– 54 –1* EFMMON Output EFM monitor output2 AVCC — Analog power3 EFMI Input EFM signal input from RF amp.4 AGND — Analog GND5 AIN Input Focus erro

– 55 –MD-R254 TESO1 Output PLLLR. Microcomputer extension output port 2 in case of selection55 TESO3 In/Output PLLOSC. Microcomputer extension outpu

MD-R2– 56 –1* P96/ANEX1 Output Not used2* P95/ANEX0 Output Not used3 P94/DA1 Output LDVAR (laser power adjustment output)4* P93/DA0 Output ADJS (for a

– 57 –MD-R252 P42/A18 In/Output SYS D2 (data bus 2)53 P41/A17 In/Output SYS D1 (data bus 1)54 P40/A16 In/Output SYS D0 (data bus 0)55* P37/A15 Output

MD-R2– 58 –Figure 58-1 BLOCK DIAGRAM OF ICIC1101 VHiiR3R55//-1:RF Signal Control (IR3R55)IC1201 VHiLR376481-1:ENDEC/ATRAC (LR376481)Figure 58-2 BLOCK

– 59 –MD-R2PARTS GUIDENOTE:Parts marked with “ ” are important for maintaining the safety of the set.Be sure to replace parts with specified ones for

MD-R2– 6 –SYMPTOM POSSIBLE CAUSE REMEDY (Continued)If a problem occu

PRICERANKDESCRIPTIONNO.PART CODE NO. PARTS CODEPRICERANKDESCRIPTIONMD-R2– 1 –INTEGRATED CIRCUITSIC101 VHINJM4560D-1 J AH Ope Amp.,NJM4560DIC201 VHIUDA

NO.PRICERANKDESCRIPTIONPARTS CODENO. PART CODEPRICERANKDESCRIPTIONMD-R2C655,656 RC-GZA106AF1C J AB 10 µF,16V,ElectrolyticC657,658 RC-GZA227AF1A J AB 2

PRICERANKDESCRIPTIONNO.PART CODE NO. PARTS CODEPRICERANKDESCRIPTIONMD-R2R953 VRS-TV2AB182J J AA 1.8 kohms,1/10WR954 VRS-TV2AB102J J AA 1 kohm,1/10WR95

NO.PRICERANKDESCRIPTIONPARTS CODENO. PART CODEPRICERANKDESCRIPTIONMD-R2! F551,552 92LFUSET102H J AD Fuse,1AFL901 VVK15BT37G/-1 J BD FL DisplayJ101 92L

PRICERANKDESCRIPTIONNO.PART CODE NO. PARTS CODEPRICERANKDESCRIPTIONMD-R2PWB-C QPWBF0400AWZZ J AC MD Mechanism Switch(PWB Only)PWB-D 92LPWB2604MDSS J —

MD-R2– 65 –Figure 6 MD MECHANISM EXPLODED VIEWABCDEFGH123456– 6 –35393M902M903M901606x342602602342432157603x2603x214SW1952SW1956SW1955SW1954SW1953312

MD-R2– 66 –Figure 7 CABINET EXPLODED VIEWABCDEFGH123456– 7 –MD UnitSiliconGrease606x5215220609x4603213603605x4608x2607x2227x2226x4216217219221x2609x

MD-R2– 67 –PACKING OF THE SET– 8 –FRONTFRONTFeature LabelPolyethylene Bag, UnitSSAKP0056AWZZPacking CaseSPAKC0596AWZZPolyethylene Bag,Pin Cord92LB

MD-R2– 68 –COPYRIGHT 1998 BY SHARP COPORATIONALL RIGHTS RESERVED.No part of this publication may be reproduced,stored in a retrieval system, o

MD-R2– 7 –MINIDISC DECKMD-R2Quick-GuideGuía rápidaConnectionConexión• MD/CD playeretc.•Reproductorde MD/CD etc.• Stereo, DAT, MD recorder, etc.with

MD-R2– 8 –DISASSEMBLYCaution on DisassemblyFollow the below-mentioned notes when disassemblingthe unit and reassembling it, to keep it safe and ensure

MD-R2– 9 –Figure 9-2Figure 9-1Figure 9-3MD Main PWB(L2)x1PullPickup Flexible PWB (*1)Frame( L2 ) x 1( L2 ) x 3( L2 ) x 1( L1 ) x 4ø1.7 x 3mm (*1) A