Sharp MD-R2 Serivce Manual

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Operation manual (40 pages)

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Page 1: Table Of Contents
MD-R2 SERVICE MANUAL No. S1805MDR2//// MD-R2 • In the interests of user-safety the set should be restored to its original condition and only parts identical to those specified should be used. CONTENTS Page IMPORTANT SERVICE NOTES ............................2 SPECIFICATIONS ................................. 2 NAMES OF PARTS ................................
Page 2: Important Service Notes
MD-R2 FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO THE OPERATION MANUAL. IMPORTANT SERVICE NOTES BEFORE RETURNING THE AUDIO PRODUCT (Fire & Shock Hazard) Before returning the audio product to the user, perform the following safety checks.
Page 3: Names Of Parts
MD-R2 NAME OF PARTS Front panel DISC TRACK DATE OVER TOTAL 1 2 3 4 5 6 7 8 9 10 11 12 13 REMAIN 15 16 17 18 19 20 MONO LP PRGM RANDOM TIMER REC CLOCK 14 1516...
Page 4: Operation Manual
MD-R2 Names of controls 1. Remote Control Transmitter Window 2. Direct Key Buttons 3. Play Mode Button 4. Music Scan Button 5. Input Select Button 6. Display Button 7. Time Button 8. Auto Mark Button 9. Track Down/Review Button: 10. Track Up/Cue Button: 11.
Page 5 MD-R2 – 5 –...
Page 6 MD-R2 – 6 –...
Page 7: Quick Guide
MD-R2 Quick-Guide MINIDISC DECK Guía rápida MD-R2 Turning the power on and off Remote control Connection Conexión y desconexión de Control remoto Conexión la alimentación • Stereo, DAT, MD recorder, etc. • • Equipment with a MD/CD player with an optical input/output jack etc.
Page 8: Disassembly
MD-R2 DISASSEMBLY (E1)x3 Caution on Disassembly ø3x10mm Follow the below-mentioned notes when disassembling the unit and reassembling it, to keep it safe and ensure (E1)x2 (E1)x1 excellent performance: ø4x8mm ø3x10mm 1. Take the minidisc out of the unit. Washer 2. When disassembling the machine, be sure to withdraw (D1)x1 the power plug from the socket in advance.
Page 9 MD-R2 ( L2 ) x 1 MD Mechanism Pickup Flexible MD Main PWB PWB (*1) ( L1 ) x 4 ø1.7 x 3mm Pull (L2)x1 (*1) After disconnecting the optical ( L2 ) x 1 pickup flex PWB from the...
Page 10: Removing And Reinstalling The Main Parts
MD-R2 REMOVING AND REINSTALLING THE MAIN PARTS (A1)x1 MD MECHANISM SECTION ø1.7x5mm Perform steps 1 to 3 of the disassembly method to remove the MD mechanism. Magnetic Head How to remove the magnetic head (See Fig. 10-1) 1. Remove the screws (A1) x 1 pc.
Page 11 MD-R2 How to remove the sled motor/loading motor (See Fig. 11-1) (D1)x2 (D1)x2 ø1.7x2mm ø1.7x2mm 1. Remove the screws (D1) x 1 pcs., and remove the sled motor/loading motor. Caution: Be careful so that the gear is not damaged. (The damaged gear emits noise during searching.)
Page 12: Adjustment
MD-R2 ADJUSTMENT TEST MODE 1) Mode there are 5 kinds TEST MODE as below. MODE PUSH KEY A) MD TEST MODE ENTER PLAY B) AUDIO TEST MODE REVIEW C) KEY TEST MODE ENTER D) RECORDING TEST MODE ENTER E) MD TEST2 MODE (DATA MONITOR MODE)
Page 13 MD-R2 KEY TEST KEY NAME ILLUMINATE KEY NAME ILLUMINATE SEGMENT SEGMENT TIMER 10 ROW DOT INPUT SELECT DISPLAY 11 ROW DOT EJECT 7 ROW DOT REVIEW PLAY 4 ROW DOT STOP 5 ROW DOT ENTER 8 ROW DOT 6 ROW DOT JOG.
Page 14 MD-R2 • Test Mode 1. AUTO pre-adjustment mode • Automatic pre-adjustment is performed. (After adjustment the grating adjustment mode is set.) • The adjustment value is output with the aid of system controller interface. 2. AUTO adjustment mode • Automatic adjustment is performed.
Page 15 MD-R2 2. AUTO adjustment mode Setting Method Step No. Remarks Display Step 1 Testmode STOP state [ t s m Step 2 Press the ENTER button two times. AUTO adjustment menu [ A U T O _ A J S T _ ] Step 3 Press once the MD PLAY button.
Page 16 MD-R2 3. RESULT mode (final adjustment) Step No. Setting Method Remarks Display Step 1 Testmode STOP state [ t s m Step 2 Press the ENTER button four times. RESULT menu [ _ R S T U L T _ _ _ ] Step 3 Press once the MD PLAY button.
Page 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 RAM. • If the REC button is pressed, the setting returns step by step excepting the following case.
Page 18 MD-R2 Step No. Setting Method Remarks Display 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") Step 10 Press once the ENTER button.
Page 19 MD-R2 Step No. Setting Method Remarks Display Step 18 Press once the ENTER button. TCRS comparison level 1 for high reflection [ T C R S C I P _ Step 19 Press once the ENTER button. Comparison level in case of COUT generation (playback)
Page 20 MD-R2 e) TEMP setting Setting Method Step No. Remarks Display Step 1 Testmode STOP state [ t s m Step 2 Press the ENTER button seven times. EEPROM setting menu [E E P R O M _ S E T] Step 3 Press once the MD PLAY button.
Page 21 MD-R2 8. TEST-PLAY mode Step No. Setting Method Remarks Display Step 1 Testmode STOP state [ t s m Step 2 Press the DELETE/CLEAR button. TEST-PLAY menu [ T E S T _ P L A Y _ ] Step 3 Press once the DISPLAY button.
Page 22 MD-R2 10. INNER mode Step No. Setting Method Remarks Display Step 1 Testmode STOP state [ t s m Step 2 Press the NAME/TOC EDIT button. INNER menu [ _ _ I N N E R _ _ ] Step 3 Press once the MD PLAY button.
Page 23 MD-R2 Mechanism Adjustment 1. Optical pickup grating inspecting method OSILLOSCOPE 42 pin of IC 1101 GND (TP1131) 100K 26 pin of IC 1101 EOUT (TP1133) 470p GND CH1 CH2 470p Spindle Motor 25 pin of IC 1101 100K FOUT (TP1132)
Page 24: Explanation Of Error Display
MD-R2 EXPLANATION OF ERROR DISPLAY Error display Errors Corrective action Can't REC • Defect occurred successively 10 times during REC-PLAY. • Check that the disc is free from flaw, dust • As a result of occurrence of defect during REC-PLAY the and fingerprint.
Page 25: Explanation Of Mechanism Error
MD-R2 Error display Corrective action Errors • UTOC was read but total TNO and the number of characters of BLANK MD • Perform recording to check that the disc NAME was 0? is recordable disc. DEFECT • Focusing error was caused by shock during REC-PLAY.
Page 26 MD-R2 -PROM Data List Focus setting Slide setting Initial Setting Item indication Initial Setting Item indication S L G S L 2 F F 1 S L D L I M F F 2 S L D L E V...
Page 27 MD-R2 -PROM Setting Mode Chart t m s Test mode STOP state ENTER X7 EEPROM setting menu E E P R O M _ S E T EJECT state _ _ E J E C T _ _ _ MD PLAY...
Page 28: Block Diagram
MD-R2 Figure 28 BLOCK DIAGRAM (1/2) – 28 –...
Page 29 MD-R2 MUTE DATA K-DATA,MD S-ID,SYN,RESET,DSTB,DSCK DATA MODE DATA BLCK LRCLK DATA SYSCLK Figure 29 BLOCK DIAGRAM (2/2) – 29 –...
Page 30: Schematic Diagram/Wiring Side Of P.w.board
MD-R2 DIGITAL RECORD SIGNAL ANALOG PLAYBACK SIGNAL DIGITAL PLAYBACK SIGNAL ANALOG RECORD SIGNAL R607 (0.6V) R601 C601 47/10 C603 IC101 R605 220P NJM4560D OPE AMP. C107 R109 R103 1/50 C115 L-CH 47/10 C109 (1/2) 220P R105 C105 – 220P R113...
Page 31 MD-R2 J101 ANALOG C451 LINE OUT R451 Q451 47/10 2SC2878 B L-CH R455 R453 IC601 C455 R617 C459 820P C461 470P R-CH NJM4580D R457 0.01 C453 R615 LINE AMP. 470P R607 L MUTE C613 47/10 R601 L-CH C607 (1/2) 220P...
Page 32 MD-R2 HEADPHONES PWB-B3 CNS903 J981 VR901-1 AUX_AMP_R_IN HEADPHONES 5K(B) AUX_AMP_L_GND AUX_AMP_L_IN Volume TO MAIN AUX_AMP_R_GND VR901-2 5K(B) AUX_VR_L_OUT CNP473 GND OPEN P31 12 - C AUX_VR_R_OUT C983 VR981-1 HP_AMP_GND 1K(C) HP_AMP_L_OUT HP_AMP_R_OUT VR981-2 RESET SW CNP904 1K(C) CNS901 Headphone Volume...
Page 33 MD-R2 53 52 51 49 48 C914 C916 0.001 0.001 FL901 C915 C917 0.001 0.001 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47...
Page 34 MD-R2 TP1141 TP1131 C1107 C1110 TP1275 0.0047 0.47 TP1142 C1106 0.47 99 98 EFMAGI EFMAGC ADIPI C1119 TP1274 EFMMON TP1140 330P R1155 AVCC ADIPO EFMO-I EFMO-I C1202 TP1139 EFMI & AGND DIFF AOUT-IN AOUT-IN EOUT-IN EOUT-IN ADLPFO DIFF BOUT-IN BOUT-IN...
Page 35 MD-R2 R1211 C1208 0.047 TP1275 TP1210 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 TP1216 TP1274 EFMMON FEMON DADATA DADATA AVCC C1202 RC120 ADDATA...
Page 36 MD-R2 P39 9 - H TO MAIN PWB CNP471 MD MAIN PWB - E (TOP VIEW) CN1902 CN1252 TO MAGNETIC Q1820 HEAD C1251 P41 9 - H C1252 R1251 R1827 R1939 Q1253 Q1254 C1425 R1940 R1223 IC1251 J1921 R1964 R1968...
Page 37 MD-R2 P39 8 - A TO MAIN PWB MD MAIN PWB - E (BOTTOM VIEW) CNP301 TP1518 TP1504 TP1516 TP1519 R1947 TP1520 TP1908 TP1524 TP1502 TP1252 TP1522 TP1512 TP1517 TP1503 TP1501 TP1907 R1759 R1805 Q1807 TP1905 R1758 COLOR TABLE C1917...
Page 38 MD-R2 COAXIAL DIGITAL 2 IN J301 OPTICA AC POWER SUPPLY CORD (216) C315 TX302 AC 120V, 60Hz R302 D301 R301 1 2 3 C301 R305 C304 C305 L302 C313 C311 IC301 L301 R313 CNP301 IC302 D512 C522 D513 Q504 C525...
Page 39 MD-R2 P37 8 - A J101 TO MAIN PWB ANALOG 2 IN LINE OUT LINE IN2 CN1904 R-CH L-CH R-CH L-CH OPTICAL C315 TX302 RX302 SW501 RESET C457 C119 1 2 3 1 2 3 C102 R103 C305 C304 L101...
Page 40 MD-R2 DISPLAY PWB-B1 HEADPHONES PWB-B3 HEADPHONE CNP904 CNS901 VOLUME P39 12 - D CNP473 TO MAIN PWB SW957 SW959 NAME DISP SW958 J981 R956 TIMER HEADPHONES CNS903 R957 R955 R958 R959 R953 SW954 R954 SW956 ENTER R911 R905 P39 8 - H...
Page 41 MD-R2 MD SPINDLE M901 TO MD MAIN PWB CN1603 P36 1 - G MD SLED M902 TO MD MAIN PWB CN1602 P36 1 - E MD LOADING M903 TO MD MAIN PWB CN1604 P37 12 - F COLOR TABLE P37 12 - E...
Page 42: Voltage (Md Main Pwb)
MD-R2 VOLTAGE (MD MAIN PWB) IC1601 IC1916 Q1801 IC1907 IC1201 IC1401 NO. VOLTAGE NO. VOLTAGE VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE VOLTAGE 1.25V 1.58V 2.8V 1.48V 3.2V 2.6V 1.5V 1.58V 4.9V 1.6V 0.2V 5.5V 3.2V 2.6V 3.2V 5.5V DIC input:2.2V 1.6V...
Page 43: Notes On Schematic Diagram
MD-R2 NOTES ON SCHEMATIC DIAGRAM • Resistor: REF. NO DESCRIPTION POSITION To differentiate the units of resistors, such symbol as K and M are used: the symbol K means 1000 ohm and the symbol SW501 RESET ON—OFF M means 1000 kohm and the resistor without any symbol is SW901 ON—OFF...
Page 44: Waveforms Of Md Circuit
MD-R2 WAVEFORMS OF MD CIRCUIT PLAY STATE PIT PLAY Stopped Stopped NORM: 100M S/s NORM: 1M S/s 1997 / 08 / 04 09:30:15 1997 / 08 / 04 13:35:24 CH1 500mV 200mV 500ns/div 1ms/div AC 10:1 DC 10:1 DC 10:1...
Page 45 MD-R2 PLAY Stopped Stopped NORM: 1k S/s NORM: 100M S/s 1997 / 08 / 04 14:19:52 1997 / 08 / 04 11:23:12 1s/div 2us/div DC 10:1 DC 10:1 DC 10:1 DC 10:1 DC 10:1 DC 10:1 DC 10:1 Filter Filter...
Page 46: Trouble Shooting
MD-R2 TROUBLE SHOOTING When MD fails operate If the objective lens of optical pickup is contaminated, MD may fail to operate. At first, clean the objective lens to check playback operation. If MD fails persistently to operate, perform checks as follows.
Page 47 MD-R2 • Disc loading is not normal. Is disc loaded when it is inserted? Check CNP1601 and SW1956. Is the pin 4 of CNP1601 set to L state? Is change observed on the pin 23 or 24 of IC1601? Check IC1401.
Page 48 MD-R2 • Normal playback When it has been confirmed that EEPROM value is normal in the TEST mode Is initialization performed normally when high reflection disc is Does the playback time display advance? played back? Check IC1201 Does disc rotate normally?
Page 49 MD-R2 • Record and playback operation Insert the low reflection disc, and after verifying the audio output in the normal mode playback set the record/playback TEST mode Recording from start address cannot be performed. Check whether the disc is record-prohibited.
Page 50 MD-R2 • Disc motor fails to run Check soldering joint and parts of pins 24 and 25 of IC1201, and Does waveform appear on the pins 24 and 25 of IC1201 in the peripheral circuit. TEST mode focus gain coarse adjustment step?
Page 51: Function Table Of Ic
MD-R2 FUNCTION TABLE OF IC IC901 RH-iX0237AFZZ: System Control Microcomputer (IX0237AW) (1/2) Terminal Name Input/Output Pin No. Port Name Function P77/AN7 KEY1 Output Not used P76/AN6 KEY2 Input Key entry P75/AN5 KEY3 Input Key entry P74/AN4 — Output Not used...
Page 52 MD-R2 IC901 RH-iX0237AFZZ: System Control Microcomputer (IX0237AW) (2/2) Input/Output Port Name Terminal Name Function Pin No. 72-80 P97/SEG23- S0-S8 Output Segment for FL drive P90/SEG16 81-88 P87/SEG15- S9-S16 Output Segment for FL drive P80/SEG8 89,90 PA7/SEG7, S17,S18 Output Segment for FL drive...
Page 53 MD-R2 IC1101 VHiiR3R55//-1:RF Signal Control (IR3R55) Function Terminal Name Pin No. RF signal input terminal 1 Input of RF signal output of pickup RF signal input terminal 2 Input of RF signal output of pickup RF signal input terminal 3 Input of RF signal output of pickup...
Page 54 MD-R2 IC1201 VHiLR376481-1:ENDEC/ATRAC (LR376481) (1/2) Function Terminal Name Input/Output Pin No. EFMMON Output EFM monitor output AVCC — Analog power EFMI Input EFM signal input from RF amp. AGND — Analog GND Input Focus error signal A Input Tracking error signal E...
Page 55 MD-R2 IC1201 VHiLR376481-1:ENDEC/ATRAC (LR376481) (2/2) Function Terminal Name Input/Output Pin No. TESO1 Output PLLLR. Microcomputer extension output port 2 in case of selection TESO3 In/Output PLLOSC. Microcomputer extension output port 3 in case of selection TEST4 In/Output EXTCLK. Microcomputer extension output port 4 in case of selection...
Page 56 MD-R2 IC1401 RX-iX0232AWZZ:MD System Microcomputer (IX0232AW) (1/2) Function Terminal Name Input/Output Pin No. P96/ANEX1 Output Not used P95/ANEX0 Output Not used P94/DA1 Output LDVAR (laser power adjustment output) P93/DA0 Output ADJS (for automatic adjustment step check) P92/TB2 Output Not used...
Page 57 MD-R2 IC1401 RX-iX0232AWZZ:MD System Microcomputer (IX0232AW) (2/2) Function Terminal Name Input/Output Pin No. P42/A18 In/Output SYS D2 (data bus 2) P41/A17 In/Output SYS D1 (data bus 1) P40/A16 In/Output SYS D0 (data bus 0) P37/A15 Output Not used P36/A14 Output...
Page 58 MD-R2 IC1101 VHiiR3R55//-1:RF Signal Control (IR3R55) ADIPI ADIPO DIFF DIFF ADLPFO ADIP REFI 22KO REFO 22KI BIAS RFADD TCGI TCGO AOUT BOUT EOUT LOGIC FOUT Figure 58-1 BLOCK DIAGRAM OF IC IC1201 VHiLR376481-1:ENDEC/ATRAC (LR376481) 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...
Page 59 “HOW TO ORDER REPLACEMENT PARTS” To have your order filled promptly and correctly, please furnish the For U.S.A. only following information. Contact your nearest SHARP Parts Distributor to order. 1. MODEL NUMBER 2. REF. No. 3. PART NO. 4. DESCRIPTION For location of SHARP Parts Distributor, Please call Toll-Free;...
Page 60 MD-R2 PRICE PRICE PART CODE DESCRIPTION PARTS CODE DESCRIPTION RANK RANK INTEGRATED CIRCUITS L1201 VPBNNR47K0000 AC 0.47 H L1203 VPBNN4R7K0000 AC 4.7 H L1251 VP-NM470K0000 AC 47 H IC101 VHINJM4560D-1 AH Ope Amp.,NJM4560D IC201 VHIUDA1340/-1 BA AD/DA Convertor,UDA1340 L1601 RCILZ0016AWZZ...
Page 61 MD-R2 PRICE PRICE DESCRIPTION PARTS CODE DESCRIPTION PART CODE RANK RANK C655,656 RC-GZA106AF1C AB 10 F,16V,Electrolytic JC196 VCCCTV1HH220J AA 22 pF (CH),50V C657,658 RC-GZA227AF1A AB 220 F,10V,Electrolytic RESISTORS C665,666 RC-GZA107AF1A AB 100 F,10V,Electrolytic C667 VCFYDA1HA104J AB 0.1 F,50V C675 VCKZPU1HF102Z AA 0.001 F,50V...
Page 62 MD-R2 PRICE PRICE PART CODE DESCRIPTION PARTS CODE DESCRIPTION RANK RANK R953 VRS-TV2AB182J AA 1.8 kohms,1/10W R1617 VRS-CY1JB473J AA 47 kohms,1/16W R954 VRS-TV2AB102J AA 1 kohm,1/10W R1650 VRS-CY1JB103J AA 10 kohm,1/16W R955 VRS-TV2AB122J AA 1.2 kohms,1/10W R1651 VRS-CY1JB104J AA 100 kohm,1/16W...
Page 63 MD-R2 PRICE PRICE DESCRIPTION PARTS CODE DESCRIPTION PART CODE RANK RANK F551,552 92LFUSET102H AD Fuse,1A LX-BZ0030AWZZ AB Screw,ø1.7 9.5mm FL901 VVK15BT37G/-1 BD FL Display LX-BZ0031AWZZ AB Screw,ø1.7 7.5mm J101 92LJACKL1779A AG Jack,Analog Line Out LX-BZ0032AWZZ AB Screw,ø1.7 2mm J301 QJAKZ0011AWZZ...
Page 64 MD-R2 PRICE PRICE PART CODE DESCRIPTION PARTS CODE DESCRIPTION RANK RANK PWB-C QPWBF0400AWZZ J AC MD Mechanism Switch (PWB Only) PWB-D 92LPWB2604MDSS J — MD Main OTHER SERVICE PARTS QCNWK0059AFZZ J AF Extension Cable (2Pin) QCNWK0107AFZZ J AH Extension Cable (6Pin)
Page 65 MD-R2 CNS1252 SW1956 PWB-C SW1953 1952 SW1955 SW1954 603x2 CFW1901 CNW301 603x2 PWB-D 612x4 M902 M903 M901 606x3 Figure 6 MD MECHANISM EXPLODED VIEW – 65 – – 6 –...
Page 66 MD-R2 606x3 606x5 602x5 604x3 609x4 PWB-B2 201-1 FL901 201-2 PWB-B1 MD Unit Silicon Grease 607x2 PWB-B3 with 608x2 SW901 605x4 Washer 205x2 PWB-A with SW901 227x2 226x4 222x2 221x2 609x2 609x2 610x3 Figure 7 CABINET EXPLODED VIEW – 66 –...
Page 67: Packing Of The Set
MD-R2 PACKING OF THE SET Polyethylene Bag, Accessories SSAKH0025AWZZ Remote Control Operation Manual Quick Guide Packing Add., Left/Right SPAKA0157AWZZ Pad (Top) SPAKZ0363AWZZ Pad (Bottom) SPAKZ0371AWZZ Feature Label Battery Pin Cord Polyethylene Bag, Pin Cord 92LBAG667B Polyethylene Bag, Unit SSAKP0056AWZZ Packing Case...
Page 68 MD-R2 © COPYRIGHT 1998 BY SHARP COPORATION ALL RIGHTS RESERVED. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any from or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of the publisher.

Sharp MD-R2 Serivce Manual

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