Service manual

ManualsBrandsSharp ManualsCD PlayerMD-R3

MD-R3

– 1 –

• 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.

MD-R3

CONTENTS

Page

IMPORTANT SERVICE NOTES ............................................................................................................................................ 2

SPECIFICATIONS ................................................................................................................................................................. 2

NAMES OF PARTS ............................................................................................................................................................... 3

OPERATION MANUAL .......................................................................................................................................................... 4

QUICK GUIDE ....................................................................................................................................................................... 7

DISASSEMBLY ...................................................................................................................................................................... 8

REMOVING AND REINSTALLING THE MAIN PARTS ....................................................................................................... 11

ADJUSTMENT ..................................................................................................................................................................... 14

EXPLANATION OF ERROR DISPLAY ................................................................................................................................ 29

EXPLANATION OF MECHANISM ERROR ......................................................................................................................... 30

NOTES ON SCHEMATIC DIAGRAM .................................................................................................................................. 33

BLOCK DIAGRAM ............................................................................................................................................................... 34

SCHEMATIC DIAGRAM/WIRING SIDE OF P.W.BOARD ................................................................................................... 40

VOLTAGE (MD MAIN PWB) ................................................................................................................................................ 58

WAVEFORMS OF CD CIRCUIT .......................................................................................................................................... 59

WAVEFORMS OF MD CIRCUIT .......................................................................................................................................... 60

TROUBLE SHOOTING ........................................................................................................................................................ 62

FUNCTION TABLE OF IC.................................................................................................................................................... 71

PARTS GUIDE/EXPLODED VIEW

PACKING OF THE SET

SERVICE MANUAL

SHARP CORPORATION

No. S2814MDR3////

This document has been published to be used

for after sales service only.

The contents are subject to change without notice.

Summary of content (92 pages)

PAGE 1
MD-R3 SERVICE MANUAL No. S2814MDR3//// MD-R3 • 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 .........................................................................................................................
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MD-R3 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. 1. Inspect all lead dress to make certain that leads are not pinched or that hardware is not lodged between the chassis and other metal parts in the audio product. 2.
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MD-R3 NAME OF PARTS Front panel 1 11 2 3 4 5 MONO LP PRGM TOTAL REMAIN RANDOM TIMER REC 14 1516 17 18 21 22 7 12 TOC DISC TRACK DATE 12 13 6 19 4 0dB 8 OVER 9 10 AM 1 2 3 4 5 6 7 PM 8 9 10 11 12 13 14 CLOCK 15 16 17 18 19 20 20 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 24. CD Track Select Button 25. Cue/Review Button: 26. Display/Character Button 27. Remote Sensor 28. MD Loading Slot 29. Record Level Control 30. Microphone Jack 31.
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–4– AM CLOCK The unit will enter the time setting mode. Set the “day” repeating steps 4 and 5. Set the “month” repeating steps 4 and 5. Press the ENTER button to set the “year”. When you turn the jog dial and let go, the year will change up or down by one. The year 2000 or later is set as follows: [00] indicates the year 2000. [01] indicates the year 2001. The range of dates that can be entered is from January 1, 1997 to December 31, 2099. Set the “year” using the jog dial.
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11 10 9 8 (Continued) DATE DATE DATE DATE ENTER PM CLOCK PM CLOCK PM CLOCK PM CLOCK TIMER DELETE/CLEAR Setting the time Press the ENTER button to set the “hour”. Turn the jog dial left or right, the hour will increase or decrease by one with every click position. The clock uses the 12-hour system. Pay attention to the AM or PM indicator on the display. AM 0:00 → midnight, PM 0:00 → noon Set the “hour” using the jog dial.
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–6– You tried to record from a disc which you are not allowed to copy. A track cannot be edited. Recording cannot be performed correctly due to vibration. Since this disc has scratches on it, the recording operation was skipped. The CD changer is not working properly. Incorrect digital signals are input. The disc is damaged or there is no TOC on the disc. The disc is out of recording space. There is no space left to record the remainder of the CD. The proper focus cannot be obtained.
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–7– 15 2 “AA” batteries Dos pilas “AA” Remote control Control remoto AC 120V, 60Hz 120V de CA, 60Hz Equipment with a coaxial jack Equipo con toma coaxial Connection Conexión 15 Stereo, radio cassette pl ay er , et c. with li ne input/output jacks Estéreo, radio-casete, etc. c on tom as de entrada/salida de línea MD/CD player etc. Repr oduc tor de MD/CD etc. (MD) To remove a MiniDisc Para extraer un minidisco (MD) (MD) (MD) Quick-Guide Guía rápida (CD) (CD) (CD) Label facing up.
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MD-R3 DISASSEMBLY PROCEDURE FIGURE 1 Top Cabinet 1. Screw ..................... (A1) x5 8-1 2 Rear Panel 1. Screw ..................... (B1) x5 8-2 3 MD Unit 1. Screw .................... (C1) x4 2. Flat Cable ............... (C2) x1 3. Socket .................. (C3) x1 8-2 4 Front Panel 1. Screw .................... (D1) x6 2. Flat Cable ............... (D2) x1 3. Socket ................... (D3) x4 8-3 5 CD Changer Block 1. Screw ...................... (E1) x4 (with CD Servo/ 2.
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MD-R3 Shield Case CD Servo PWB CD Changer Block (R1) x 2 ø3 x 6mm Tray Switch PWB (M2)x3 (M1)x3 ø3x10mm (N2)x2 (P1)x1 ø2x7mm (R1) x 2 ø3 x 6mm MD Mechanism Unit CD Changer PWB (N1)x2 ø2.6x10mm (Remove 4 soldering joints). Figure 9-1 Figure 9-3 (Q3) x1 (S2) x 1 Push. (Q1) x2 ø2 x7mm (Q5) x1 ø2.6 x12mm Pickup Flexible PWB (*1) Pawl MD Main PWB (S1) x 4 ø1.7 x 3mm (Q6) x1 Pull (Q7) x1 (S2)x1 Spring CD Mechanism (Q2) x1 (Q8) x4 ø2.
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MD-R3 • Jog knob replacement procedure NUT Jog Knob Jog Decoration FL Window Jog Decoration Front Panel VOLUME Display PWB Jog Knob Push directly the jog knob with pliers etc. Figure 10-1 Display PWB Remove the pawl of jog decoration with fine piece such as tweezers, press, and remove the jog knob. Only push out on the jog knob itself.
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MD-R3 REMOVING AND REINSTALLING THE MAIN PARTS (A1) x2 ø2.6 x5mm CD MECHANISM SECTION For the procedure to remove the CD mechanism from the main unit, refer to Disassembling Procedure, Steps 1, 5, 11, and 14. How to Remove the optical pickup (See Fig. 11-1.) Stop Washer (A3) x1 Pickup CD Mechanism 1. Remove the screws (A1)x 2 pcs., to remove shaft (A2)x 1 pc. 2. Remove stop washer (A3)x 1 pc., to remove gear (A4)x 1 pc. 3. Remove the optical pickup.
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MD-R3 (A1)x1 ø1.7x5mm MD MECHANISM SECTION Perform steps 1, 3, 15 to 17 of the disassembly method to remove the MD mechanism. Magnetic Head How to remove the magnetic head (See Fig. 12-1) 1. Remove the screws (A1) x 1 pc. Caution: Take utmost care so that the magnetic head is not damaged when it is mounted. MD Mechanism Figure 12-1 How to remove the cartridge holder (See Fig. 12-2) Slider Lever 1. Open the rpller arm lever in the arrow direction, and lower the clamper lever to the rear side. 2.
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MD-R3 How to remove the sled motor/loading motor (See Fig. 13-1) 1. Remove the screws (D1) x 1 pcs., and remove the sled motor/loading motor. (D1)x2 Ø1.7x2mm (D1)x2 Ø1.7x2mm Caution: Be careful so that the gear is not damaged. (The damaged gear emits noise during searching.) Loading Motor Sled Motor Figure 13-1 How to remove the spindle motor (See Fig. 13-2) 1. Remove the screws (E1) x 3 pcs., and remove the spidle motor. Caution: Be careful so that the turntable is not damaged. Turntable (E1)x3 Ø1.
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MD-R3 ADJUSTMENT CD SECTION Extension cable When making adjustment or checking operation, use the following extension cable as necessary. Type A Extension cable Parts No. For CD PWB (TP751, 6-pin) QCNWK0043AFZZ CD SERVO PWB A 1 TP751 1 6 6 Extension cable for CD Servo PWB QCNWK0043AFZZ CNP700A BI851/CNS552 CNP751 CNS903 1 10 CNP752 Figure 14 CD circuit adjustment 1.
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MD-R3 Button operation in CD test mode 1. [STOP] 2. [ 3. [ ] ] 4. [DISP] 6.Hold down [CD-PLAY] for 500 msec : Specific operation is stopped, resulting in TEST mode waiting state. The pickup slide is kept in stop state. : The pickup slides toward the external periphery. : The pickup slides toward the internal periphery. When the switch (Pu_IN) is on, the slide is stopped. : When this switch is pressed in TEST 4 or later, it is accepted, and the mode is changed directly to TEST 3.
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MD-R3 Vertically symmetrical waveform 0.5~1.5Vp - p Reference CD level 1/2 VCC Adjust to get uniform and minimized error waveform. Figure 16-1 TRACKING ERROR BALANCE Apply a black tape (1.2 to 1.5 wide). Figure 16-3 FOCUS OFFSET/TRACKING OFFSET FG1 TP751, pin 1 TG1 TP751, pin 4 27kΩ Waveform observation point 820P 1/2 VCC Figure 16-4 LOW-PASS FILTER 2.2K TP751, pin 4 (TG1) It is allowed use any disc in addition to test disc. Do not apply the black tape to the initialization part (TOC). 0.
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MD-R3 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 CUE REVIEW C) KEY TEST MODE CUE ENTER 2) How to start and quit TEST MODE. AC Supply On or push RESET KEY after push two keys. In all TEST MODE. Power Off (POWER KEY) is quit TEST MODE. 3) TEST MODE description. A) MD TEST MODE (ENTER+PLAY) Disp. Will be "AUT YOBI". In this mode push PLAY KEY in mean product alignment's auto adjust mode. (Disp. Will be "AUTO AJST".
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MD-R3 KEY TEST KEY NAME TIMER KEY NAME ILLUMINATE SEGMENT 10 ROW DOT ILLUMINATE SEGMENT INPUT SELECT TOC DISPLAY 11 ROW DOT EJECT 7 ROW DOT REVIEW ALL PLAY 4 ROW DOT CUE PM STOP 5 ROW DOT ENTER 8 ROW DOT REC 6 ROW DOT JOG. UP 17 (M.C.) NAME 9 ROW DOT JOG. DOWN 18 (M.C.) TIME AM PROGRAM PRGM MD SECTION 1. Preparation for adjustment Test disc Type 1 2 3 Test disc Part No.
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MD-R3 • Test Mode 1. EJECT mode • TEMP setting (of EEPROM setting) • CONTROL setting (of EEPROM setting) • Setting of laser power (record/playback power) 2. 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 interf 3. AUTO adjustment mode • Automatic adjustment is performed. (After adjustment the grating adjustment mode is set.
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MD-R3 2. AUTO pre-adjustment mode (Low reflection disc only) Step No. • Setting Method Remarks Display Step 1 Testmode STOP state Step 2 Press once the ENTER button. [tsm Step 3 Press once the MD PLAY button. The slide moves to the innermost periphery, and automatic pre-adjustment is started. • During automatic adjustment changes as follows. HAo→RFg→SAg→SBg→PTG→PCH→GTG→GCH→RCG→ SEG→RFG→SAG→HAO→HEO→TCO→LAO End of adjustment If adjustment is OK, Step 4. If adjustment is NG, Step 5.
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MD-R3 Step No. Setting Method Remarks Display Step 18 Press once the ENTER button. Indication of measurement value [LBO: Step 19 Press once the ENTER button. Indication of measurement value [LEO: _ _ _] _ _ _] Step 20 Press once the ENTER button. Indication of measurement value [LFO: _ _ _] Step 21 Press once the ENTER button. Indication of measurement value [TCO:_ _ _ _] Step 22 Press once the ENTER button. Indication of adjustment error sequence No.
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MD-R3 Step No. Setting Method Remarks Display Step 22 Press once the ENTER button. Focus ATT (B signal) setting [SBG: Step 23 Press once the ENTER button. Offset "0" setting → A signal offset measurement [HAO: __] ] Step 24 Press once the ENTER button. B signal offset measurement [HBO: __] Step 25 Press once the ENTER button. E signal offset measurement [HEO: __] Step 26 Press once the ENTER button. F signal offset measurement [HFO: __] Step 27 Press once the ENTER button.
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MD-R3 8. EEPROM setting mode a) Focus setting Setting Method Step No. Step 1 Remarks Testmode STOP state Display [tsm EEPROM setting menu e ] Step 2 Press the ENTER button seventimes. Step 3 Press once the MD PLAY button. Focus setting menu [E E P R O M _ S E T] [__Focus___] Step 4 Press once the ENTER button. Focus system loop filter gain constant setting [FG______ ] Step 5 Press once the ENTER button.
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MD-R3 Setting Method Step No. Remarks Display Step 11 Press once the ENTER button. Tracking kick pulse level setting (for one line jump) [TRKLV0__ ] Step 12 Press once the ENTER button. Tracking kick pulse level setting (for 10 line jump) [TRKLVt__ ] Step 13 Press once the ENTER button. Tracking drive pulse width setting (for one line jump) [TDPWo___ Step 14 Press once the ENTER button.
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MD-R3 e) TEMP setting Setting Method Step No. Remarks Step 1 Testmode STOP state Step 2 Press the ENTER button seven times. Step 3 Press once the MD PLAY button. Focus setting menu [tsm EEPROM setting menu ] [__Focus___] Press the ENTER button four times. Step 5 Press once the MD PLAY button. TEMP reference value setting TEMP setting menu Setting Method e [E E P R O M _ S E T] Step 4 Step No.
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MD-R3 g) ADJUST setting Setting Method Step No. Remarks Step 1 Test mode STOP state (or continuous record/playback state or specific menu state of other mode) Step 2 Input the B2h command 7 times, including NOP (or input once the B2h command and input once the A8h command) The specific setting is read from EEPROM. Display [tsm EEPROM setting menu e ] [E E P R O M _ S E T] Step 3 A2h command input Focus setting menu [__Focus___] Step 4 Input the B2h command 6 times, including NOP.
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MD-R3 • Whenever the DISPLAY/CHARACTER button is pressed in the continuous playback mode, the indication changes as follows. * Pit section Continuous playback (SUBQ address indication + C1 error indication) remains. * Groove section Continuous playback (ADIP address indication + C1 error indication) remains. ↓ Continuous playback (ADIP address indication + ADIP error indication) remains. ↓ Continuous playback (ADIP address indication + C1 error indication) remains.
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MD-R3 Mechanism Adjustment 1.
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MD-R3 EXPLANATION OF ERROR DISPLAY Error display Corrective action Errors 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. recordable cluster became zero. Check whether there is any black spot. • Adress is unreadable. REC state connot be set for 20 seconds Check for disc disalignment and run-out. although retry is repeated.
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MD-R3 Error display Corrective action Errors DEFECT • Focusing error was caused by shock during REC-PLAY. • Check that the disc is free from flaw, dust, fingerprint and black spot. Check for disc disalignment and run-out. TOC W ERROR • Although UTOC can be read but UTOC cannot be rewritten. • Check that the record head contact is normal. Check that there is no broken wire between PWB and the recording head. MD ERROR • Data of EEPROOM is not correct. • Auto pre-adjustment is not complated.
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MD-R3 E2-PROM Data List Slide setting Focus setting Item indication Item indication Initial Setting Initial Setting FG 97 H SLG 35 H FF1 9E H SL2 27 H H SLDLIM 65 H FF2 E0 FZHLEV ED H SLDLEV 16 H FOKLEVn 08 H SLKLVk 55 H FOKLEVf 08 H SLKLVt 3A H FOKLPFn 00 H SLKLVm 55 H FOKLPFf 88 H WAITf 90 H Control setting Item indication Spin setting Item indication SPG Initial Setting 20 SPG—in SPG—mid B8 76 H H H SPG—out 50 H SP1 10 H SP2 87 H SP3 E3
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FF1_____ FF2_____ REC REC – 32 – Figure 32 REC REC WAITf___ ENTER FOKLPFf_ ENTER REC REC FOKLPFn_ ENTER FOKLEVf_ ENTER FOKLEVn_ ENTER F Z C L E V_ _ ENTER REC TF2_____ ENTER SVCNY4__ ENTER TRBLVt__ ENTER TRKLVt__ ENTER SPDLIM__ WAITm___ ENTER COTLVr__ ENTER COTLVp__ ENTER SLCTm___ ENTER SLCTt___ ENTER SLCTo___ ENTER TDPWt___ TDPWo___ ENTER REC SP5_____ ENTER REC SP4_____ ENTER TRKLVo__ ENTER SP3_____ ENTER REC REC SP2_____ ENTER TRBLVo__ ENTER SP1_____
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MD-R3 NOTES ON SCHEMATIC DIAGRAM • Resistor: To differentiate the units of resistors, such symbol as K and M are used: the symbol K means 1000 ohm and the symbol M means 1000 kohm and the resistor without any symbol is ohm-type resistor. Besides, the one with “Fusible” is a fuse type. • Capacitor: To indicate the unit of capacitor, a symbol P is used: this symbol P means micro-micro-farad and the unit of the capacitor without such a symbol is microfarad.
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MD-R3 CH1-OUTB CH1-INA FOCUS COIL – + D. BUF 3 3 3 2 2 1 1 CH1-INB 4 TR-B 5 CD+5V 5 6 6 7 7 8 8 – + VREG OUT 6 Q701 5 10K 4 TRACKING COIL MD 2 D. BUF 6.65K 4 1 LEVEL SHIFT CH1-OUTA OPTICAL PICKUP UNIT LASER DRIVER VOLTAGE REGULATOR MUTE GND Q751 7 IC700 BA5914FP FOCUS/TRACKING/ SPIN/SLIDE DRIVER 8 LD 10K 6.
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MD-R3 CH1-INA 2 D. BUF 28 – + + LEVEL SHIFT CH1-OUTB 1 LEVEL SHIFT CH1-OUTA – 27 D. BUF 3 GND CH4-OUTA D. BUF 26 10K D. BUF + – – + 6.65K TR-B 5 VREG OUT 6 MUTE M M702 SLED MOTOR CH4-INA 5 6 5 6 M M701 SPINDLE MOTOR 24 CH4-INB 2 1 2 1 23 BIAS IN SW702 PICKUP IN VCC 7 22 IC700 BA5914FP FOCUS/TRACKING/ SPIN/SLIDE DRIVER VCC + POWER+7V 50K 8 – 19 CH3-INA 10K D. BUF 6.
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MD-R3 TX301 DIGITAL OUTPUT MD UNIT 5V SYSCL 74HC10AP IC302 NAND GATE J301 COAXIAL IN 13 14 5V 6 IC301 INVERTER 74HCU04 7 9 9 6 1 2 7 1 14 RX301 DIGITAL INPUT 5V 5V Q930 BUTTON BLOCK 19 22 18 20 21 41 6 5V 100 BACK UP 5V 91 FL VP 98 ~ 1 2 3 JOG VOLUME SW901 Q935 44 SW501 RESET 35 IC902 PST9127 RESET CD5V CD UNIT CD7.5V IC901 IX0240AW SYSTEM MICROCOMPUTER 33 24 29 14 15 16 17 32 UN940 REMOCON ~ 34 23 13 36 37 7 X902 32.
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MD-R3 A–9V 4 1 7 13 L3MODE 14 L3CLK 15 L3DATA 26 24 VDD0 AVDD VDDD VADCP VDDA ~ 19 IC201 1 UDA1340 6 AD/DA CONVERTER 11 25 23 10 1 10 2 9 4 8 3 11 A+9V IC101 NJU4560D LINE IN AMP 5 3 12 17 8 VR101 REC VOL VINL,VINR SYSCLK,WS,DATA0,DATA1 3 5 A–9V 7 A+9V 14 J101 LINE IN IC380 MC14066B ANALOG SWITCH 6 5 13 12 22 27 J351 MIC JACK Q380 7 2 VOUTR,VOUTL A–9V 4 1 7 3 5 8 IC501 S81233YX REGULATOR 1 IC351 MIC AMP NJM4560D A+9V A+9V 2 J101 LINE OUT MUTE 3 Q451 Q452 A–9V A–9V MUTE
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Figure 38 BLOCK DIAGRAM (5/6) – 38 – M M903 LOADING MOTOR HEAD UP/DOWN M M902 SLED MOTOR M DIRECT SWITCH SW1952 LEAD INSWITCH SW1953 PLAYSWITCH SW1954 RECSWITCH SW1955 LOADING SWITCH SW1956 WRITE PRO LIGHT RECEIVING SECTION RF LIGHT RECEIVING SECTION ERROR SIGNAL MD Q1251~Q1254 D4.3V IC1601 M56758FP 5-CH MOTOR DRIVER MONITOR DIODE LASER DIODE IC1101 IR3R55 RF SIGNAL PROCESSOR D3.2V D6.5/4.75 ~ 5.25V D4.
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MD-R3 SWITCHING TRAY MOTOR DRIVER ICB102 TA7291S TRAY MOTOR MOB2 IN1 VREF OUT1 VS GND NC OUT2 VCC IN2 9 8 7 6 5 4 3 2 1 M + – M GND M +9V MAIN CAM MOTOR DRIVER ICB103 TA7291S QB102 M IN1 9 8 7 6 5 4 3 2 1 + VREF OUT1 VS GND NC OUT2 VCC IN2 MOB1 MAIN CAM MOTOR – M GND M +9V MICOM +5V 37 1 2 3 4 SW-B SW-C SW-D M-CONT1 M-CONT2 M-CONT3 M-CONT4 V-SEL SW-1 33 IKISUGI 32 CLOCK 31 ICB101 MODE DATA 30 IX0177AW COMAND DATA 29 CHANGER READY 28 MICROCOMPUTER KEY OUT4 27 KEY IN0 KEY IN1 KEY IN2 KEY IN3
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MD-R3 B A R790 120K B R791 120K F C R794 68K CNP752 R795 68K T+ TR– T– PICKUP UNIT R757 1K FO+ TR– CNP751 1 2 3 4 5 6 TRACKING OFFSET TG2 HF TG1 FG2 1/2Vcc TP751 FOCUS OFFSET SW702 PU-IN G R771 27K R772 82K SS FIL C760 0.1 SS– R774 47K R775 1K R776 22K SS OUT C761 0.022 FS– – + TC Det 10 11 TE2 AMP. + – 12 13 15 – + LEVEL SHIFT 1 2 3 4 5 6 7 28 27 6.65K F+ +– – + F– 6 5 4 3 2 1 6 5 4 3 2 1 6 5 4 3 2 1 10 11 12 13 14 26 25 24 23 22 22K 16 –+ 10µA TS AMP.
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MD-R3 +B IC750 M62472FP ERVO CONTROL CD SIGNAL C811 100/10 C772 0.033 HFC 37 MRC +B C770 10/16 C780 0.001 31 MSD I/F C817 10P (CH) E R808 560K R809 560K 30 ACLR 82K 29 22K 28 DOUT L JP1 F 1 2 DIGITALOUT IC800 M65821FP SERVO/SIGNAL CONTROL SIGNAL PROCESSOR 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 C764 0.1 DIGITAL 5V R813 1K 20µA SS AMP.
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MD-R3 +B RB161 220K ICB104 RESET 4.9V A CB140 0.1 (ML) M.GND 5.08V 2 1 M+9V +B 3 CB141 0.1 (ML) XB101 3MHz 0V 0V 17 D-GND D.
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MD-R3 ND +B Vs OUT1 Vref IN1 8 9 +B 0.8V CB123 0.047 (ML) KEY OUT2 41 KEY OUT3 40 5.07V +B 5.07V D+5V 39 D+5V 38 CB134 0.1 (ML) 5.07V 0.8V MODE DATA SW-1 IKISUGI – NC 34 + M MOB2 TORAY MOTOR 32 33 CB153 0.1 0.8V Vref IN1 6 7 8 9 +B 8.37V 0.6V CB127 100P CB152 470P RB149 1 (1/2W) RB148 1K 2.8V OUT1 5 3 QB102 KRC107 M 1 0V 2 0V RB152 RD5.1JS1 Vs 4 CB132 5.07V 100P 5.07V GND 3 RB147 1K 0.6V NC 2 +B 0V OUT2 1 8.37V 5.
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MD-R3 P46 1 - C TO MAIN PWB CNP351 A 1 2 3 4 5 6 CNS351 CNS101 1 2 3 4 5 6 3 2 1 CNS652 HEAD BI351 1 2 3 4 5 6 MIC PWB-B3 P47 11 - B TO MAIN PWB CNP652 P46 4 - A TO MAIN PWB CNP101 VR651-1 1K(C) HEADPHONES VOLUME 0V 5 + C355 220P R350 100 B C353 0.1 C351 100P (CH) J351 MIC R351 100K R354 4.7K R356 1K C370 0.1 0V R358 820 R361 47K REC VOLUME. 8 1 (1/2) 2 – 0V CNP651 VR651-2 1K(C) C357 100/10 8.23V 3 + C356 220P CNS651 1 2 3 VR101-2 5K(B) IC351-1 NJM4560D MIC AMP.
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MD-R3 FILMNT2 FILMNT1 IC USEG30 USEG29 USEG28 USEG27 USEG26 USEG01 USEG02 USEG03 USEG04 USEG05 USEG06 USEG07 USEG08 USEG09 USEG10 USEG11 USEG12 USEG13 USEG14 USEG15 USEG16 USEG17 USEG18 USEG19 USEG20 USEG21 USEG22 USEG23 USEG24 USEG25 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 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 50 49 48 HEADPHONES PWB-B2 C925 0.001 C927 0.001 J651 C663 0.1 CNW655 FILMNT2 HEADPHONES C662 0.001 CNP651 FL901 C926 0.
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MD-R3 P44 4 - A TO DISPLAY PWB CNS101 A L-CH C101 0.022 IC101-1 NJM4560D OPE AMP. 0V L-CH GND R-CH L-CH GND R-CH R109 1K 1 2 3 4 5 6 3 + C103 100P (CH) C104 100P (CH) C109 220P R105 100K R119 100K L101 0.22µH J101 LINE IN R102 1K C107 1/50 R103 1K R101 1K C105 220P R120 100K R111 1.5K R-CH CNP101 L-CH 7.8V R113 1K C113 47P (CH) +B R115 100 C117 100/10 R607 1K R601 470 C601 47/10 C108 1/50 8 9 11 10 3 4 1 5 + R112 1.5K 2 5 C116 47/10 _ (1/2 R 1.
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MD-R3 IC601-1 NJM4580D LINE AMP. 5 + 0.01V 3 + 0.01V 1 (2/2) 4 2 _ R606 22K R612 1.5K 0V R610 1K 0V C614 47/10 R618 330 J101 LINE OUT L451 0.22µH C456 820P R454 33K R458 10K C460 470P C454 470P 0V R-CH R452 330 C452 47/10 Q452 2SC2878 B MUTE R456 100 –6.3V (0.6V) R620 0V 10K R616 47K R653 1K –B R614 100 R663 1K C651 10/16 C616 100/10 C612 47P (CH) C453 470P –6.3V (0.6V) R619 10K –7.
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MD-R3 A SYRS SYRD SYWR SYD7 SYD6 SYD5 SYD4 1 AOUT 28 BOUT EOUT LOGIC LATCH CLOCK DATA DVCC 17 18 19 20 21 22 23 24 25 10 WBO-I 11 C1211 1 TP1136 R1154 22K TP1135 R1153 22K TP1134 R1152 22K TP1133 R1151 22K TP1132 R1150 22K 12 13 14 15 TP1220 FODRF FODRR TRDRF TRDRR SLDRF SLDRR SPDRF SPDRR 16 R1653 100K R1651 R1657 R1655 R1661 R1659 R1665 17 100K 120K 120K 82K 82K 62K 18 19 20 21 22 23 24 25 R1663 62K SYD7 SYD6 SYD5 SYD4 SYRS SYRDX SYWRX X176KO FODRF FODRR TRDRF TRDRR SLDRF
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MD-R3 MD MAIN PWB-E 6 R1211 220 20 21 22 23 24 25 R1663 62K SYD7 SYD6 SYD5 SYD4 SYD3 SYD2 SYD1 SYD0 RSTX DGND VDD1 DINTX MCCK COUT SENSE FOK SFSY SBSY SBO SBCK TEMON TOTMON 48 49 50 26 27 28 TP1214 C1203 1 63 62 R1201 150 XL1201 33.8688MHz C1204 12P(CH) C1205 12P (CH) 61 60 59 58 57 56 TP1273 55 53 8 1 2 3 4 5 6 7 8 R1962 220K C1953 0.47 A9 A3 A2 A1 A0 11 12 R1969 C1958 56 0.047 CLOCK GENERATOR C1954 15P (CH) R1963 1.
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MD-R3 A P56 3 - A TO MD MAIN PWB P52 5 - A TO DISPLAY PWB CN1902 CNP901 FC402 FC401 1 24 1 P54 2 - E TO CD SERVO 24 IC501 C516 C515 CNS502 1 2 3 B R418 R417 D651 C227 2422201816141210 8 6 4 2 3 1 23211917151311 9 7 CNP401 CNP402 5 1 2 3 4 5 6 CNP351 G R411 C542 R412 R458 B C E Q452 CNP652 R457 R660 3 2 1 E C B L451 Q653 C667 Q451 R102 C453 R456 L101 R455 C104 R120 C103 R119 R101 C454 C101 C457 CNP505 C201 7 6 5 4 3 2 1 C207 Q509 C224 Q508 CNP503 R313 C303 R523 8 9 10 11 R
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MD-R3 F551 1A Q501 E C B D502 R503 C504 D556 R511 Q930 D557 D558 R551 R522 D555 C502 D509 R502 R514 D508 Q503 D504 D501 D551 C503 B C E D510 D553 R507 R508 C511 C512 R419 Q935 F552 1A D552 C544 5 17 19 21 23 16 18 20 22 24 D554 C505 C501 E C B R501 C509 Q502 MAIN PWB-A C507 R504 CNS505 R516 C520 CNS502 R505 R506 P53 11 - A TO CD CHANGER PWB D503 P54 2 - E TO CD SERVO PWB C510 24 R519 C508 C526 R520 D559 D511 E C B C506 Q507 C524 D505 R510 D506 C513 C527
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MD-R3 DISPLAY PWB-B1 Rec.
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P50 5 - H TO MAIN PWB P51 8 - B TO MAIN PWB CNP504 CNP505 CNS504 CNS505 5 4 3 2 1 BR RD OR YL YL OR RD BR BK 1 2 3 4 1 LB102 6 RB106 RB105 RB107 1 RB161 LB105 LB103 3 2 1 23 22 25 20 30 33 SWB106 CD TRAY CLOSE CB106 CB111 CB112 CB113 CB114 CB121 RB139 RB141 1 2 3 4 5 6 7 8 9 RB144 CB133 1 2 3 RB133 CB134 RB142 ICB102 RB147 CB152 12 11 44 1 CB123 1 2 3 4 5 6 7 8 9 CB127 RB128 CB109 RB119 RB120 CB110 RB118 RB127 RB148 CB153 SWB108 CD SET RB126 CB132 CB130
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MD-R3 A CD MOTOR PWB-G P52 6 - B TO DISPLAY PWB 5 CD SERVO PWB-C CNS903 R757 R761 4 - GY WH GY WH GY BL 6 5 4 3 2 1 + CNS700B VR754 6 5 4 3 2 1 1 2 3 4 5 6 TP751 6 5 4 3 2 1 CNS700A SLIDE MOTOR M702 R809 R808 R703 C704 R701 TRACKING ERROR BALANCE R811 VR751 6 5 4 3 2 1 R702 C703 VR753 R763 VR752 TRACKING R762 R764 OFFSET C756 CNP700A CNP700B SPIN MOTOR M701 SW702 PICKUP IN B FOCUS OFFSET TRACKING GAIN R812 + 15 14 21 8 12 11 10 9 8 7 6 5 4 3 2 1 CNP800 C808 7 28 Q
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MD-R3 MD SPINDLE M901 COLOR TABLE BR TO MD MAIN PWB CN1603 P56 1 - F RD 1 BK 2 MD SLED M902 BROWN RD(R) RED OR ORANGE YL YELLOW GR GREEN BL BLUE VL VIOLET GY GRAY WH(W) WHITE BK BLACK PK PINK MD LOADING M903 TO MD MAIN PWB CN1602 P56 1 -E RD 1 BK 2 P57 12 - E TO MD MAIN PWB CN1601 RD 1 BK 2 SW1955 RECORD SW1954 PLAY R1904 1 3 5 2 4 CN1901 CW1901 TO MD MAIN PWB CN1604 P57 12 - G SW1953 LEAD IN R1903 R1902 R1901 SW1956 LOADING SW1952 DIRECT MD MECHANISM SWITCH PWB-F MD
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MD-R3 A P50 4 - A TO MAIN PWB CNP401 L1251 CN1902 Q1820 R1456 R1460 R1458 R1454 R1452 C1252 R1251 1 Q1822 R1464 L1950 R1462 R1466 C1724 LR190 R1994 TO MAGNETIC HEAD P55 9 - H C1425 Q1253 Q1254 7 1 C1254 C1255 IC1251 C1927 R1940 Q1403 Q1404 Q1451 C Q1821 R1461 R1708 R1733 C1251 R1827 R1939 R1459 R1463 CN1252 2 1 D1251 1 24 Q1251 B D1252 MD MAIN PWB - E (TOP VIEW) 1 Q1252 24 R1223 14 8 8 3 4 L1203 C1210 R1409 R1266 50 26 51 R1263 45 40 30 35 R1963
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MD-R3 P51 10 - H TO MAIN PWB CNP301 MD MAIN PWB - E (BOTTOM VIEW) TP1504 TP1516 TP1518 TP1502 TP1512 TP1503 R1947 R1821 R1808 C1913 R1927 CN1904 4 R1973 R1424 R1423 R1422 R1401 R1404 R1472 81 R1473 31 50 7 BK BLACK PK PINK R1426 C1405 C1653 C1654 8 C1605 R1658 TP1608 IC1601 TP1610 C1655 TP1611 R1660 20 22 2 TP1102 1 CNP1604 C1651 30 25 R1650 C1650 15 TP1104 TP1217 TP1129 9 C1657 C1602 35 TP1218 1 TP1605 TP1616 TP1609 C1609 R1281 C1116 C1656 C1661 TP1
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MD-R3 VOLTAGE (MD MAIN PWB) Q1801 PIN VOLTAGE NO. E 5V C 5V B 43V Q1802 PIN VOLTAGE NO. E 0V C 0V B 0.15V Q1803 PIN VOLTAGE NO. E 0V C 0V B 3.1V Q1807 PIN VOLTAGE NO. E 3.95V C 3.2V B 3.3V Q1820 PIN VOLTAGE NO. E 3.2V C 3.18V B 2.4V Q1821 PIN VOLTAGE NO. E 0V C 0V B 3.08V Q1822 PIN VOLTAGE NO. E 0V C 0V B 0.1V Q1451 PIN VOLTAGE NO. E 0V C 3.18V B 0.1V Q1401 PIN VOLTAGE NO. E 3.2V C 3.2V B 0V Q1402 PIN VOLTAGE NO. E 0V C 0V B 2.3V Q1403 PIN VOLTAGE NO. E 3.18V C 0V B 3.15V Q1404 PIN VOLTAGE NO.
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MD-R3 WAVEFORMS OF CD CIRCUIT 0.2V/1mS (DC range) [Disc playback mode] 1, 2 IC700 100 2V/1mS (DC range) 90 [Disc playback mode] Potential difference 0V 100 90 1/2VCC Disc free from flaw 10 10 0% 0% TRIG Disc having flaw (the same as above) IC750 100 100 90 In test mode 2 (disc is not loaded. Lens is moved up and down.) 1/2VCC 200mV/0.5S (DC range) * Observation with the aid 10 of storage oscilloscope 0% Only the triangular wave and luminous dot shown right are observed on oscillograph.
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MD-R3 WAVEFORMS OF MD CIRCUIT PLAY STATE Stopped NORM: 100M S/s CH1 500mV AC 10:1 CH1 2V DC 10:1 500ns/div 1 Offset TP1274 (EFMMON) CH1 CH2 CH3 CH4 T --0.000V 0.000V 0.000V 6 Record Len Main 500 Zoom 10 1 1997 / 08 / 04 13:35:24 T Filter SMOOTH OFF BW FULL 1 PIT PLAY Stopped NORM: 1M S/s 1997 / 08 / 04 09:30:15 T CH2 2V DC 10:1 CH3 200mV AC 10:1 CH4 5V DC 10:1 1ms/div Filter SMOOTH OFF BW FULL TP1274 1 TP1218 (TEMON) T Record Len Main 10K Zoom 100 2 Detay 0.
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MD-R3 Stopped NORM: 1k S/s CH1 2V DC 10:1 9 CH2 2V DC 10:1 CH3 5V DC 10:1 CH4 5V DC 10:1 1997 / 08 / 04 11:23:12 T CH1 5V DC 10:1 1s/div CH2 5V DC 10:1 CH3 52V DC 10:1 2us/div Filter SMOOTH OFF BW FULL TP1216 1 6 PLAY Stopped NORM: 100M S/s 1997 / 08 / 04 14:19:52 T Offset 0.000V 0.000V 0.000V 0.000V CH1 CH2 CH3 CH4 TP1218 T Filter SMOOTH OFF BW FULL T Record Len Main 10K Zoom 100 2 Detay 18 DADATA 20 BCLK CH1 CH2 CH3 CH4 1 Record Len Main 2K Zoom 20 Detay 0.
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MD-R3 TROUBLE SHOOTING (CD SECTION) CD fails to operate If the objective lens of optical pickup is contaminated, CD may fail to operate. At first clean the objective lens, and check playback operation. If CD does not operate persistently, check as follows. If dust or foreign substance is accumulated on the pickup lens, playback is disturbed and TOC (content of item) is not displayed. Before adjusting check whether the lens is clean. If the lens is contaminated, treat it as follows.
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MD-R3 • Laser does not light Is 5V applied to the pin 13 CD LD ON terminal of IC901? IC901 is defective. No Yes Is +4.0V applied to the emitter of Q751? No Yes Is +5V applied to the C751 side of No R753? R753 is defective. Yes Check the pin 2 of BI851/CNS552A/B, and check +5V line of SERVO. Is +1.8V applied to the collector of Q701. No Yes Is +3.2V applied to the base of Q751? Yes No Check between the base of Q751 and the pin 6 of IC750. Q751 is defective. Is +1.
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MD-R3 • Track search failure Set the TEST mode, and check whether the slide motor is started with (skip) (skip). Check as stated in item "Slide motor fails to run". No Yes Is the following waveform output to the pin 29 of IC750 in track jump state? IC750 is defective. No Yes * The sate where the following waveform is output to the pin 17 of IC750 is referred to as track jump state.
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MD-R3 • Spindle motor CLV servo failure Does the spindle motor run in the CD TEST mode3? No Yes (Extremely high speed rotation) Is voltage generated for about 0.3 to 1.5 sec between the pins 17 and 18 of IC700 when the mode is changed Yes from the CD TEST mode 2 to 3? Spindle motor failure or wire breakage. 0.3~1.5 sec. No Is the pin 37 of IC800 in High state for 0.3 to 1.5 sec when the CD TEST mode 2 is changed to 3? Does pulse appear subsequently? Yes IC800 is defective. No 5V 0.3~1.5 sec.
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MD-R3 TROUBLE SHOOTING (MD SECTION) 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. If dust or foreign substance is accumulated on the pickup lens, playback is disturbed and indication of TOC (content of tracks) may be disabled. Before adjusting check that the lens is clean. If the lens is contaminated, treat it as follows.
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MD-R3 • Disc loading is not normal. Yes Is disc loaded when it is inserted? No Check CNP1601 and SW1956. Is the pin 4 of CNP1601 set to L state? No Yes Is change observed on the pin 23 or 24 of IC1601? Check IC1401. No No Yes Is change observed on the pin 30 or 31 of IC1601? Check CNP1604 and IC1601. No Yes Check CNP1604 and CN1604 Yes Is ejection performed when the MD taking-out button is pressed? No Yes Disc retracts soon after completion of disc ejection. Yes Check CNP1601 and SW1956.
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MD-R3 • 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 played back? Does the playback time display advance? Yes No No Check IC1201 Does disc rotate normally? No Is lead-in switch turned on in the TEST mode when the pickup is on the innermost periphery (Is the pin 6 of OC1401 on L level?) No Yes Is an attempt to read repeatedly the TOC section of low reflection disc made? Check SW1953, mechanism
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MD-R3 • 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. Yes Is RF waveform output to the pin 1 IC1201 or TP1274 when playback is performed after recording? Check whether the disc is record-prohibited.
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MD-R3 • Disc motor fails to run Does waveform appear on the pins 24 and 25 of IC1201 in the TEST mode focus gain coarse adjustment step? No Check soldering joint and parts of pins 24 and 25 of IC1201, and peripheral circuit. No Check soldering joint of PWB of completed IC1601 and CNP1601 disc motor. No Check the soldering joint of pins 20 and 21 of IC1201, IC1601, IC1601, CNS1101. Yes Check the waveform on the pins 22 and 23 of IC1201, check the peripheral parts and soldering joint.
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MD-R3 FUNCTION TABLE OF IC IC901 RH-iX0240AWZZ: System Control Microcomputer (IX0240AW) (1/2) Port Name Pin No.
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MD-R3 IC901 RH-iX0240AWZZ: System Control Microcomputer (IX0240AW) (2/2) Pin No.
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MD-R3 IC1101 VHiiR3R55//-1:RF Signal Control (IR3R55) Pin No. Function Terminal Name 1 RF1 RF signal input terminal 1 Input of RF signal output of pickup 2 RF2 RF signal input terminal 2 Input of RF signal output of pickup 3 RF3 RF signal input terminal 3 Input of RF signal output of pickup 4 RF4 RF signal input terminal 4 Input of RF signal output of pickup 5 REFI Reference voltage amp. input terminal 6 REFO Reference voltage amp.
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MD-R3 IC1201 VHiLR376481-1:ENDEC/ATRAC (LR376481) (1/2) Pin No.
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MD-R3 IC1201 VHiLR376481-1:ENDEC/ATRAC (LR376481) (2/2) Pin No. Function Terminal Name Input/Output 54 TESO1 Output 55 TESO3 In/Output PLLOSC. Microcomputer extension output port 3 in case of selection PLLLR. Microcomputer extension output port 2 in case of selection 56 TEST4 In/Output EXTCLK. Microcomputer extension output port 4 in case of selection 57 CDDATA In/Output High speed dubbing CD data input.
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MD-R3 IC1401 RX-iX0232AWZZ:MD System Microcomputer (IX0232AW) (1/2) Pin No.
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MD-R3 IC1401 RX-iX0232AWZZ:MD System Microcomputer (IX0232AW) (2/2) Pin No.
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MD-R3 1 RF2 2 3 RF3 GOUT ATTR EFMAGI EFMAGC AGND AVCC EFMI EFMO RF2-1 ADAGI ADAGC 48 47 46 45 44 43 42 41 40 39 38 37 EFM AGC RESISTOR & SW RF1 POUT IC1101 VHiiR3R55//-1:RF Signal Control (IR3R55) 36 ADIPI 35 ADIPO DIFF 34 NC DIFF RF4 4 REFI 5 REFO 6 RFADD 7 TCGI 8 29 TCGO AIN 9 28 AOUT BIN 10 27 BOUT 33 ADLPFO ADIP AGC 32 22KO 31 22KI BIAS EIN 11 30 WBO HPF LPF 26 EOUT LOGIC 13 14 15 16 17 18 19 20 21 22 23 24 AVCC XSTBY XDISC XS
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MD-R3 PARTS GUIDE MODEL MD-R3 “HOW TO ORDER REPLACEMENT PARTS” To have your order filled promptly and correctly, please furnish the following information. 1. MODEL NUMBER 2. REF. No. 3. PART NO. 4. DESCRIPTION For U.S.A. only Contact your nearest SHARP Parts Distributor to order. For location of SHARP Parts Distributor, Please call Toll-Free; 1-800-BE-SHARP MARK: SPARE PARTS-DELIVERY SECTION Explanation of capacitors/resistors parts codes Capacitors Resistors VCC .......................
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MD-R3 NO. PRICE RANK PART CODE DESCRIPTION NO.
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MD-R3 NO.
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MD-R3 NO.
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MD-R3 NO.
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MD-R3 NO.
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MD-R3 NO.
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MD-R3 NO.
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MD-R3 306-2 A 306 306-1 306-3 701 704 B 701 304 C 702 302 702 301 D 303 703x2 E M701 F 307 308 M702 305x2 G SW702 PWB-G H 1 2 3 4 Figure 8 CD MECHANISM EXPLODED VIEW 8 –– ––87 5 6
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MD-R3 804 120 120 116 A 113 112 112 119 124 119 124 B CD Mechanism 114 805x4 803x2 120 109 C 131 128 802 112 115 125 119 124 101 802 122 D 804x3 127 126 104 103 E 111x2 801x2 132 106 108 801 x2 139 138 137 103 130 107 110x2 102 104 105 133 103 134 108x3 101 F G 108 135 135 136 108 134 135 108x3 121 SWB 108 SWB 107 SWB 106 PWB-H SWB 105 SWB101 ~104 803 135 136 108 134 135 108x3 MOB1 802 129 123x4 135 136 PWB-D MOB2 80mm H 806x2 1 2 3 4 Figure 9 C
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MD-R3 608 8 48 16 35 A 45 611x2 12 10 5 B 11 18 609 608 CNS1252 29 C 611x2 39 30 40 B1 609 13 37 A1 607 B2 41 25 3 9 33 A 22 21 D A2 19 610 38 601 610 23 26 601 604 31 37 20 601 SW1956 17 601 38 607 605 607 42 607 E PWB-F 6 SW 1952 SW1955 CFW1901 603x2 SW1953 SW1954 1 15 50 43 32 14 7 24 F 603x2 PWB-E 602 612x4 34 602 4 A1 B2 A G A2 B1 2 46 49 613 47 613 M902 M903 M901 H 606x3 1 2 3 4 Figure 10 MD MECHANISM EXPLODED VIEW – 10
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MD-R3 225 606x3 242 606 A 606x5 CD Changer Unit B 215 603 606 PWB-B2 613x3 PWB-C C 609x3 PWB-B5 220 602x2 602x6 229 PWB-B4 230 609 238 214 231 611 614x3 FL901 240 602x11 223 D 210 610 602x2 234 236 201-1 233 PWB-B1 201-2 211 235 201 E PWB-B3 MD Unit 610x4 205 Silicon Grease 603x2 603x2 209 607x2 608x2 610 232 208 F 611 205 207 240 204 605x4 PWB-A 606 203 G 237 609 206 with SW901 217 226x6 216 218 219 222x2 241 H 606x2 609x2 1 2 224 3 4 Figu
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MD-R3 PACKING OF THE SET Feature Label Polyethylene Bag, Unit SSAKP0056AWZZ Polyethylene Bag, Accessories SSAKH0025AWZZ • Operation Manual • Quick Guide Remote Control Polyethylene Bag, Warranty 92LBAG667B Analog Connecting Cable x 2 FR ON T Packing Add.
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MD-R3 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.