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Panasonic SJ-MJ88 manual

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Table of contents for the manual

  • Page 1

    ORDER No. A D0101008C2 Portable MD Pla y er SJ-MJ88 MD unit: R A E1611Z Mechanism Series Colour (S)...................Sil v er T y pe A reas EB...................Great Britain. EG...................Europe. 1[...]

  • Page 2

    SPECIFIC A TIONS Specifications A udio S y stem : M iniDisc digital audio s y stem Laser : Semiconductor laser (=780 nm) Sampling frequenc y : 44.1 kHz Coding : A dapti v e T ransform A coustic Coding ( A T R A C) No. of channels : 2 (left and right, stereo) 1 (monaural) Frequenc y response : 20 Hz~20 kHz (+0 dB, -8dB) Wo w and flutter : Belo w mea[...]

  • Page 3

    Panasonic alkaline: A bout 70 hours Both together : A bout 88 hours Charger Input : A C120-240 V (EG) / A C 230-240V (EB), 50 Hz 4W Output : DC 340m A (EG)/DC 350m A (EB), 1.2V Recharging time : A bout 2 hours Notes: - The pla y time ma y be less depending on the operating conditions. - Specifications are subject to charge w ithout notice. Weight a[...]

  • Page 4

    - Carr y ing case..........................................................1 pc. (RFC0056-K) For EB area - Charger...................................................................1 pc. (RP-BC155 A EBY) For EG area - Charger...................................................................1 pc. (RP-BC155 A EYB) 2. Precaution of Laser Diode 4[...]

  • Page 5

    3. Operating Instructions 4. Handling Precautions for Tra v erse Deck The laser diode in the tra v erse deck (optical pickup) ma y break do w n due to potential difference caused b y static electricit y of clothes or human bod y. So, be careful of electrostatic breakdo w n during repair of the tra v erse deck (optical pickup). 4.1. Handling the tra[...]

  • Page 6

    Fig. 1 Fig. 2 4.2. Grounding for electrostatic breakdo w n pre v ention 1. Human bod y grounding 6[...]

  • Page 7

    Use the anti-static w rist strap to discharge the static electricit y from y our bod y . (as sho w n in Fig. 3 ) 2. Work table grounding Put a conducti v e material (sheet) or steel sheet on the area w here the tra v erse deck (optical pickup) is placed, and ground the sheet. (as sho w n in Fig. 4 ) Caution The static electricit y of y our clothes [...]

  • Page 8

    5. Operation Checks and Component Replacement Procedures - This section describes procedures for checking the operation of the major printed circuit boards and replacing the main components. - For reassembl y after operation checks or replacement, re v erse the respecti v e procedures. Special reassembl y procedures are described onl y w hen requir[...]

  • Page 9

    9[...]

  • Page 10

    - Check the P.C.B. as sho w n belo w. 10[...]

  • Page 11

    5.2. Replacement for the lock unit, open knob and intermediate cabinet - Follo w the (Step 1) - (Step 3) of item 5.1. 11[...]

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  • Page 15

    5.3. Replacement for the disc co v er ass’y - Follo w the (Step 1) - (Step 3) of item 5.1. - Follo w the (Step 1) - (Step 3) of item 5.2. 15[...]

  • Page 16

    5.4. Replacement for the tra v erse motor - Follo w the (Step 1) - (Step 3) of item 5.1. 16[...]

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    5.5. Replacement for the optical pickup - Follo w the (Step 1) - (Step 3) of item 5.1. - Follo w the (Step 1) - (Step 5) of item 5.4. 20[...]

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    6. Measurements and A djustments Note: A fter replacing the main components (optical pickup or tra v erse motor, etc.) of mechanism unit block, change to the adjust mode, and then perform the “Laser po w er adjustment”, “Off-set automatic adjustment” and “Pla y back-onl y disc/ magneto-optical disc automatic adjustment”. 6.1. Instrument[...]

  • Page 26

    3. Laser po w er meter (LE8010 or compatible meter) 4. Remote controller 6.2. Laser po w er adjustment, Off-set automatic adjustment, Pla y back-onl y disc/magneto-optical disc automatic adjustment magnet 6.2.1. Enter the adjustment mode Caution: Place the unit on the insulation sheet w ith the disc co v er side facing up. 1. Disassemble the unit s[...]

  • Page 27

    A djustment mode Display Laser po w er adjustment T 0E Off-set automatic adjustment T 1E M agneto-optical disc automatic adjustment T 2E Pla y back-onl y disc automatic adjustment T 3E Jitter meajurement (74minutes) T 4E Jitter meajurement (60 minutes) T 5E Destination change T 6E Off-set automatic adjustment v alue check T 7E M agneto-optical disc[...]

  • Page 28

    - Laser diode in the optical pickup ma y be destro y ed b y the static electricit y generated in y our clothes or bod y . Be especiall y careful w ith the static electricit y. 6.2.2.2. A djustment Procedure 1. Unco v er the laser po w er meter. (as sho w n in Fig. 6 ) Fig. 6 2. Locate the sensor of the laser po w er meter at a position abo v e the [...]

  • Page 29

    4. Press the ke y of the remote controller (“LD ” changes to “LP ” of the LCD). 5. Set the laser po w er at 600 W±10 % b y using VOL+ and VOL- ke y of the remote controller. [Specified range : 600 W±10 %] Caution: Proceeding on to the subsequent adjustment procedure w ith the read po w er exceeding 600 W±10 % w ill result in damage to th[...]

  • Page 30

    Fig. 9 30[...]

  • Page 31

    6.2.3. Off-set automatic adjustment 1. Remo v e the mechanism unit from the disc co v er. Then mo v e the optical pickup to the center, and attach the mechanism unit again to the disc co v er. 2. With “T1E ” displa y ed, lea v e the disc co v er open. 3. Pressing the ke y on the remote controller w ill start adjustment. 4. During adjustment, ?[...]

  • Page 32

    4. Press ke y (“ A OK ” or “ A NG ” changes to “T2E ”). 5. A fter the adjustment is finished, remo v e the disc. 6.2.5. Pla y back-onl y disc automatic adjustment 1. Ha v e “T3E ” indicated on displa y , set the pla y back-onl y disc. (Check to make sure the disc is properl y seated.) 2. Press ke y of the remote controller. The adju[...]

  • Page 33

    M ain unit’s ke ys LCD displa y position and letters A fter the third ke y is pressed, the second digit displa y ed w ill change from “ ” to “O ”. VOL+ A fter the second ke y is pressed, the third digit displa y ed w ill change from “ ” to “O ”. VOL- HOLD OFF T he first digit displa y ed w ill change from “ ” to “O ”. 5. A[...]

  • Page 34

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  • Page 41

    8. Schematic Diagram Notes 8.1. T y pe Illustration of IC's, Transistors and Diodes 41[...]

  • Page 42

    8.2. Schematic Diagram Notes This schematic diagram ma y be modified at an y time w ith the de v elopment of ne w technolog y. Notes: S201 : Volume control s w itch (+) S202 : v olume control s w itch (-) S203 : Skip/search s w itch ( ) S204 : Skip/search s w itch ( ) S206 : Pla y /stop s w itch ( ) S207 : Co v er open/close det. s w itch S208 : Ho[...]

  • Page 43

    Voltage and signal line : Positi v e v oltage line : Pla y back signal line 9. Schematic Diagram 10. Printed Circuit Board Diagram 11. Block Diagram 12. Terminal Function of IC's 12.1. IC1 ( A N86772FHKEBV): RF A MP 43[...]

  • Page 44

    Pin No. M ark I/O Di v ision Function 1 LDO O LD amp. output terminal 2 LDIN I LD amp. re v erse input terminal 3 A PCPD I Photo diode light quantit y det. input terminal 4 NC — Not used, open 5 A RFO O RF amp. output terminal 6 NC — Not used, open 7 EQIN I EQ input terminal 8 CRF A GC I RF A GC capacitor connection terminal (Connected to po w [...]

  • Page 45

    24 Pin No. M ark I/O Di v ision Function 25 A DIP O A DIP signal output terminal 26 NC — Not used, open 27 28 RFSWHL I Reflectance H/L s w itching signal input terminal 29 RFSWPG I Pit/Cr v s w itching signal input terminal 30 GND2 — GND terminal 31 NC — Not used, open 32 M ONI OFF I 3 T M ON circuit control signal input terminal 33 BPF I A D[...]

  • Page 46

    Pin No. M ark I/O Di v ision Function 1 RV DD 3 I Po w er suppl y to internal DR AM 2 RV DD 18 O Voltage regulator output terminal (Connects to internal DR A M suppl y terminal) 3 RV DD 23 — Voltage regulator input terminal ( A ccepts a suppl y v oltage identical to that for IO pad) 4 LON I Voltage regulator ON/OFF control signal input terminal ([...]

  • Page 47

    Pin No. M ark I/O Di v ision Function 19 RV DD 1 I Po w er suppl y to internal DR AM 20 RV SS 2 — GND to internal DR AM 21 FODP O Focus dri v e (+) PW M signal output terminal 22 FODM O Focus dri v e (-) PW M signal output terminal 23 SPDP O Spindle dri v e (+) PW M signal output terminal 24 SPDM O Spindle dri v e (-) PW M signal output terminal [...]

  • Page 48

    terminal for EF M PLL Pin No. M ark I/O Di v ision Function 45 A DIP I A DIP signal input terminal 46 PE AK I Ser v o A DC input terminal 47 B T OM 48 B AT 49 G A IR AN 50 M ON3T 51 VREFI I Ser v o A DC input/ v oltage reference for A DIP comparator 52 FF2 I Ser v o A DC input terminal 53 AV DD 0 — A nalog po w er supply 54 FF1 I Ser v o A DC inp[...]

  • Page 49

    12.3. IC201 (MN101C32G A E): SYSTEM CONTROL Pin No. M ark I/O Di v ision Function 1 VREF- — A D reference input (-) (connected to GND) 2 ( A N0) RE M KEY I Remote cont. ke y input terminal 3 ( A N1) KEY IN I Unit ke y input terminal 4 ( A N2) B A TT I Batter y v oltage det. input terminal 5 ( A N3) — Not used, connected to GND 6 ( A N4) 7 ( A N[...]

  • Page 50

    Pin No. M ark I/O Di v ision Function 22 SSDR I Read data input terminal for CPU interface 23 SSCLK O Clock output terminal for CPU interface 24 BUZZER O Confirmation tone output terminal 25 RST I Reset signal input terminal 26 CFSYNC I S y nchronize signal input terminal for CPU interface 27 SEL AD O A ddress select output terminal for CPU interfa[...]

  • Page 51

    Pin No. M ark I/O Di v ision Function 51 B A TT CHK LED — Batter y check LED dri v e output terminal (Not used, open) 52 JI TT ER OK — Process inspection output terminal (Not used, open) 53 REG2 I M odel s w itching input terminal (L: M J88, H: M J80) 54 REG3 I Recharge s w itching input terminal 55, 56 — — Not used, open 57 EEP CS O EEP RO[...]

  • Page 52

    Pin No. M ark I/O Di v ision Function 77 PC O 4-ch. dri v er standb y output terminal (L:Standb y) 78 S T BY2 O FD/ T R coil po w er suppl y control output terminal 79 B A TT CHK O Batter y check output terminal (Not used, open) 80 M SP RST O M SP reset output terminal (L:Reset) 12.4. IC301 (C0GBZ000006): FOCUS/TR A CKING COIL/ TR A VERSE MOTOR DRI[...]

  • Page 53

    Pin No. M ark I/O Di v ision Function 1 IN1R I H bridge 1 re v erse input terminal 2 IN2F I H bridge 2 for w ard input terminal 3 IN2R I H bridge 2 re v erse input terminal 4 S T A LL I Standb y input terminal 5 S T HB I H1, H2 bridge mute input terminal 6 SPV M1 I Spindle po w er unit’s po w er suppl y 1 7 SPUOUT O Spindle motor coil (U) output [...]

  • Page 54

    Pin No. M ark I/O Di v ision Function 18 SPUIN I SPIN detection comparator (U-phase) input terminal 19 SPVIN I SPIN detection comparator (V-phase) input terminal 20 SPWIN I SPIN detection comparator (W-phase) input terminal 21 SPCOM I SPIN motor coil neutral point input terminal 22 RIB I Soft s w itching gain control resistor terminal 23 CST I Star[...]

  • Page 55

    Pin No. M ark I/O Di v ision Function 40 SLV M2 I Stepping po w er unit’s po w er suppl y 2 41 SLVOUT O Stepping motor (V) output terminal 42 SLPG1 — Stepping po w er unit’s GND 1 43 SLUOUT O Stepping motor (U) output terminal 44 SLV M1 I Stepping po w er unit’s po w er suppl y 1 45 V CC 2 — Small signal block po w er suppl y terminal 2 ([...]

  • Page 56

    Pin No. M ark I/O Di v ision Function 62 H1FOUT O H bridge 1 for w ard output terminal 63 H1PG1 — H bridge 1 po w er unit’s GND 1 64 IN1F I H bridge 1 for w ard input terminal 13. Caution in Use of Rechargeable Batter y A ss'y - Take Rechargeable Batter y A ss’ y out of Batter y Carr y ing Case and use it. - Be sure to carr y Rechargeabl[...]

  • Page 57

    - Replacement parts w ill be supplied for Batter y Carr y ing Case (RF A 0475-Q) w ithout Rechargeable Batter y A ss’ y. - To y our customers, deli v er y Rechargeable Batter y A ss’ y together w ith Batter y Carr y ing Case to pre v ent shorting accidents that ma y occur w hen Rechargeable Batter y A ss’ y is carried about Batter y Carr y in[...]

  • Page 58

    safet y. *Furthermore, special parts w hich ha v e purposes of fire-retardant (resistors), high-qualit y sound (capacitors), lo w -noise (resistors), etc. are used. *When replacing an y of components, be sure to use onl y manufacture’s specified parts sho w n in the parts list. *The parenthesized indications in the Remarks columns specif y the ar[...]

  • Page 59

    Ref. No. Part No. Part Name & Description Pcs Remarks 13-5 RMX0156-1 STOPPER RUBBER 1 14 RJR0195-2 B A TTERY SH A FT 1 15 R A F2000 A -M OPTIC A L PICKUP 1 16 RXJ0025 DRIVE SH A FT 1 17 RHD14067 SCREW 5 18 RJC99039 RECH A RGE.B A TT.TERMIN A L(+) 1 A1 RP-BP62EYS1 RECH A RGE A BLE B A TT. A SS’Y 1 A1-1 RF A 0475-Q RECH A RGE A BLE B A TT.C A S[...]

  • Page 60

    Ref. No. Part No. Part Name & Description Pcs Remarks C308 ECUEN A 104KBQ 10V 0.1U 1 F1G1 A 104 A 014 C309-11 ECUENC333KBQ 16V 0.033U 3 F1G1C333 A 004 C318 ECUVNJ274KBV 63V 0.27U 1 F1H0J2740001 C319,20 ECUEN A 104KBQ 10V 0.1U 2 F1G1 A 104 A 014 C323-25 ECUE1H222KBQ 50V 2200P 3 F1G1H222 A 457 C330-33 ECUVNJ105KBV 63V 1U 4 F1H0J105 A 002 C401 F3Z[...]

  • Page 61

    Ref. No. Part No. Part Name & Description Pcs Remarks PCB1 REP3063 A -M M A IN P.C.B. A SS’Y 1 (RTL) Q1 2SB1295-6-TB TR A NSISTOR 1 B1 A DKB000001 Q5 XP152 A 12C0MR TR A NSISTOR 1 B1DH A C000002 Q201 2SD1819 A STX TR A NSISTOR 1 2SD1819 A SL Q202 2SB1295-6-TB TR A NSISTOR 1 B1 A DKB000001 Q401 XP151 A 13 A 0MR TR A NSISTOR 1 B1DFBC000003 Q402[...]

  • Page 62

    Ref. No. Part No. Part Name & Description Pcs Remarks R507 EXB24V100JX 1/16W 10 1 R509 ERJ2GEJ221X 1/4W 220 1 ERJ2RMJ221X R512 ERJ3GEYJ225V 1/16W 2.2M 1 S201,02 RSG0051-P SW,VOLUME +,- 2 S203,04 EVQPUL02K SW,SKIP/SE A RCH 2 S206 EVQPUL02K SW,PL A Y/STOP 1 S207 RSH1 A 039-A SW,COVER OP/CL DET. 1 K0L1B A 000037 S208 RSS2 A 010-1A SW,HOLD 1 K0D112[...]