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Panasonic SJ-MR230DGH Service Manual

Portable md recorder
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ORDER No.AD0211148C3
Portable MD Recorder
SJ-MR230DGH / SJ-MR230DGK
Colours
(S)...................Silver Type
(R)...................Red Type [(GK) area only.]
(A)...................Blue Type
SPECIFICATIONS
Specifications
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Summary of Contents for Panasonic SJ-MR230DGH

  • Page 1 ORDER No.AD0211148C3 Portable MD Recorder SJ-MR230DGH / SJ-MR230DGK Colours (S)....Silver Type (R)....Red Type [(GK) area only.] (A)....Blue Type SPECIFICATIONS Specifications Great user manuals database on UserManuals.info...
  • Page 2 About 27 hours About 13 hours LP2: About 35 hours About 18 hours LP4: About 42 hours About 23 hours Panasonic alkaline Normal: About 42 hours About 8 hours LP2: About 59 hours About 13 hours Great user manuals database on...
  • Page 3 LP4: About 70 hours About 21 hours Both together Normal About 77 hours About 35 hours LP2: About 100 hours About 50 hours LP4: About 117 hours About 62 hours Notes: - The play time may be less depending on the operating conditions.
  • Page 4 (N2QCBD000012) For GH area - Speaker ass’y............2pcs. (RFKAJMR250-S) - Cradle..............1pc. (RFE0114A) - AC adaptor.............1pc. (RFEA413H-W) For GK area - Speaker ass’y............2pcs. (RFKAMR230GKS) - Cradle..............1pc. (RFE0114B) - AC adaptor..............1pc. (RFEA413T-1W) 2. Precation of Laser Diode Great user manuals database on UserManuals.info...
  • Page 5 3. Operating Instructions 4. Handling Precautions for Optical Magnetism Head Unit The laser diode in the optical magnetism head unit may break down due to potential difference caused by static electricity of clothes or human body. So, be careful of electrostatic breakdown during repair of the optical magnetism head unit. 4.1.
  • Page 6 4.2. Grounding for electrostatic breakdown prevention 1. Human body grounding Use the anti-static wrist strap to discharge the static electricity from your body. (as shown in Fig. 3 2. Work table grounding Put a conductive material (sheet) or steel sheet on the area where the optical magnetism head unit is placed, and ground the sheet.

  • Page 7: Operation Checks And Component Replacement Procedures

    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 reassembly after operation checks or replacement, reverse the respective procedures. Special reassembly procedures are described only when required.
  • Page 8 - Check the main P.C.B. (A side) as shown below. 5.2. Replacement for the intermediate cabinet - Follow the (Step1)-(Step3) of item 5.1. Great user manuals database on UserManuals.info...
  • Page 9 5.3. Replacement for the open knob - Follow the (Step1)-(Step3) of item 5.1. - Follow the (Step1)-(Step4) of item 5.2. Great user manuals database on UserManuals.info...
  • Page 10 5.4. Replacement for the traverse motor - Follow the (Step1)-(Step3) of item 5.1. Great user manuals database on UserManuals.info...
  • Page 11 Great user manuals database on UserManuals.info...
  • Page 12 5.5. Replacement for the LCD - Follow the (Step1)-(Step3) of item 5.1. - Follow the (Step1)-(Step4) of item 5.2. Great user manuals database on UserManuals.info...
  • Page 13 Great user manuals database on UserManuals.info...
  • Page 14 5.6. Replacement for the lift motor - Follow the (Step1)-(Step3) of item 5.1. - Follow the (Step1)-(Step4) of item 5.2. - Follow the (Step1) of item 5.5. Great user manuals database on UserManuals.info...
  • Page 15 5.7. Replacement for the optical pickup - Follow the (Step1)-(Step3) of item 5.1. - Follow the (Step1)-(Step4) of item 5.2. - Follow the (Step1)-(Step5) of item 5.4. - Follow the (Step1) of item 5.5. Great user manuals database on UserManuals.info...
  • Page 16 Great user manuals database on UserManuals.info...
  • Page 17 6. Measurements and Adjsutments Note: After replacing the main components (optical pickup or traverse motor, etc.) of mechanism unit block, change to the adjust mode, and then perform the “laser power adjustment”, “off-set auto- adjustment” and “playback-onlydisc/magneto-optical disc auto-adjustment”. 6.1. Instruments to prepare 1.
  • Page 18 Note: For use of MD cartridge type laser power meter, remove the intermediate cabinet before perform the laser power adjustment (as for the method of disassembly, refer to “5. Operation checks and main component replacement procedures”.). 6.2. Laser power adjustment, Off-set automatic adjustment and Playback-only disc/magneto-optical disc auto- adjustment 6.2.1.
  • Page 19 *In the display of T0E** ~ TFE** shown above, you must adjust T0E**, T1E**, T2E** and T3E**. You must perform the adjustment byobserving the order T0E** T1E** T2E** T3E**. 6.2.2. Laser Power Adjustment Adjust each laser power: read power for reading (play) and write power for writing (record). 6.2.2.1.
  • Page 20 1. Have “T0E** ” indicated on display, and move the optical pickup to the most inside (only when a MD cartridge type laser power meter is used). 2. Set the laser power meter. [For use of stick type laser power meter.] 2-1 Uncover the laser power meter.
  • Page 21 5. Perform the read power adjustment. Set the light power at 600 ±10% by using VOL+, VOL- , EQ and PLAY MODE keys of the remote controller. In the laser power adjustment, EQ and PLAY MODE keys change every8 steps for VOL+ and VOL- keys change 1 step.
  • Page 22 4. When it ends normally, “0FOK” is displayed on LCD of remote control and a main part. It is set to “0FNG” at the time of abnormalities. 5. Press the PLAY key of the remote controller (change the display of the LCD to “T1E** ” , off-set automatic adjustment will be finished.).
  • Page 23 LCD. If it is abnormally, it changes to “00NG ”. 5. Press the PLAY key (“00OK ” or “00NG ” changes to “T3E** ”, playback-only disc adjustment is finished.). Note: When “00NG” is displayed, check “7. Troubleshooting Guide” in order. 6.2.6.

  • Page 24: Troubleshooting Guide

    Main unit’s key Check point Voltage (ON) Voltage (OFF) PLAY IC501 100pin 2.2V STOP IC501 100pin 1.76V 2.2V IC501 99pin 0.66V 2.2V IC501 99pin 0.88V 2.2V HOLD OFF IC501 42pin 2.2V IC501 100pin 0.22V 2.2V VOL+ IC501 99pin 1.1V 2.2V VOL- IC501 99pin 1.32V...
  • Page 25 Great user manuals database on UserManuals.info...
  • Page 26 7.1.2. Confirmation of main unit and cradle Great user manuals database on UserManuals.info...
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  • Page 28 7.2. Flow Chat of Each Part Great user manuals database on UserManuals.info...
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  • Page 36 8. Display of Self-Diagnostic Function This model is equipped with a self-diagnosis function and shows, when necessary, the following indication in the LCD section of the set. Great user manuals database on UserManuals.info...

  • Page 37: Schematic Diagram Notes

    “F17”---This indication appears when the Down switch fails to turn ON since the magnetic head fails to move up/down normally (Due to trouble of the magnetic head or trouble of the magnetic head up/down motor)or the magnetic head P.C.B. is out of position or a foreign matter has mixed in or for some other reason.
  • Page 38 : Hold switch in “OFF” position. (HOLD) S806 - Indicated voltage values are the standard values for the unit measured by the DC electronic circuit tester (high-impedance) with the chassis taken as standard. Therefore, there may exist some errors in the voltage values, depending on theinternal impedance of the DC circuit tester.
  • Page 39 14. Wiring Connection Diagram 15. Terminal Function of IC's 15.1. IC1 (AN22010A-VF) : RF AMP Mark Function Division Laser amp output terminal LD IN Laser amp reverse input terminal APCPD Photo diode light quantity det. input terminal APC REF APC amp reference voltage input terminal ARFO RF amp.
  • Page 40 Mark Function Division F2 signal I/V converter output terminal F1 signal I/V converter output terminal 23,24 — Not used, open ADIP ADIP signal output terminal — Not used, open NREC REC/PLAY select signal input terminal RFSWHL Reflect H/L select signal input terminal 29 RFSWPG Pit / group select signal...
  • Page 41 Mark Function Division Main beam D signal input terminal Main beam C signal input terminal 15.2. IC101 (M66621BSG) : ATRAC ENCORDER/DECORDER, SERVO SIGNAL PROCESSOR Mark Function Division Test input terminal (Not used, connected to GND) APCD Laser power setting PWM output terminal RFSWPG Pit / group setting signal...
  • Page 42 Mark Function Division TVDP/ Traverse (+) drive signal / stepper drive signal 1 STPO1 output terminal SBCK/ Sub code Q clock for resistor / stepper drive STPO2 signal 2 output terminal SUBC/ Sub code Q / stepper status 0 input terminal STPI0 BLKCK/ Sub code block clock...
  • Page 43 output terminal Mark Function Division SCTSY ADIP synchronous noise output terminal SSDR System control read data output terminal SSDW System control write data input terminal SSCK System sift clock signal input terminal SELAD System control address signal select input terminal MONI1 Monitor 1 output terminal (Not used, open)
  • Page 44 Mark Function Division Servo A/D converter input terminal Servo A/D converter input terminal AVSS1 — GND terminal PEFMS EFM signal input terminal PEFM1 EFM data slice roop filter 1 output terminal EFMFIL EFM data slice roop filter 2 output terminal 68 EFMPLLF Filter for EFMPLL output terminal...
  • Page 45 Mark Function Division DVDD2 Power supply input terminal RAD0 Address for DRAM 0 output terminal RDT3 Data for DRAM 3 input / output terminal IVDD1 — Power supply for I/O pad RDT2 Data for DRAM 2 input / output terminal RDT1 Data for DRAM 1 input / output terminal...
  • Page 46 Mark Function Division IN 1R H bridge 1 reverse input terminal IN 2F H bridge 2 forward input terminal IN 2R H bridge 2 reverse input terminal STALL Standby input terminal STHB H1, H2 bridge mute input terminal SP VM1 Half bridge 1 input terminal SP U Spindle motor coil (U)
  • Page 47 terminal Mark Function Division CSL2 Slope capacitor connection terminal Speed pulse output terminal BRK+ Brake comparater+ input terminal (Connected to power supply through resistor) BRK- Brake comparater- input terminal ASGND — GND terminal SGND — GND terminal Stepping decorder 1 input terminal Stepping decorder 2 input terminal...
  • Page 48 Mark Function Division — Charge pump capacitor 2(-) connect terminal — Charge pump capacitor 2(+) connect terminal — Charge pump capacitor 1(-) connect terminal — Charge pump capacitor 1(+) connect terminal EXTCLK — Not used, open — Not used, open H2 PG2 —...
  • Page 49 Mark Function Division AVREFO Reference voltage input terminal for A/V converter AVDD — Power supply terminal for A /V converter (+2.2V) AVSS — Connected to GND P80/ — Connected to GND ANO0 P80/ — Connected to GND ANO1 AVREF1 Reference voltage input terminal for D/A converter (Connected to GND) —...
  • Page 50 Mark Function Division Remote control key WAKE REM_KEY_WAKE UP signal input terminal 24 DOCTOR Doctor mode signal input terminal (Open) M_REQ NET MD microcomputer (IC1101) communication request signal output terminal (Not used, open) M_RST NET MD microcomputer (IC1101) communication reset signal output terminal (Not used, open) M_CS NET MD microcomputer...
  • Page 51 Mark Function Division 42 HOLD_SW HOLD switch input terminal (H : hold) 43 DCIN_DET DC IN detection input terminal (H : DC IN) 44 DCIN_DET2 DC IN2 detection input terminal (H : DC IN2) INSEL Input select detection input terminal 46 MIC_DET Mic input detection input terminal (L : Mic)
  • Page 52 Mark Function Division EVSS — GND terminal EVDD — Power supply terminal (+ 2.2V) HFON1 HF module ON signal output terminal 66 MONIOFF 3T monitor OFF output terminal (H : OFF) 67 REC_CNT2 REC control output terminal 2 68 REC_CNT1 REC control output terminal 1 RF_CNT...
  • Page 53 Mark Function Division 84 OPENSW Disc cover open/close detection terminal (H : open) 85 WAKEUP Microcomputer wake up signal input terminal SCTSY ADIP syncronize signal input terminal from IC101 CFSYNC MDA syncronized signal input terminal from IC101 MDISY Headder syncronize signal input terminal from IC101 P711/ —...

  • Page 54: Replacement Parts List

    17. Replacement Parts List Notes: *Important safety notice: Components identified by mark have special characteristics important for safety. Funrthermore, special parts which have purposes of fire-retardant (resistors), high-quality sound (capacitors), low-noise (resistors), etc. are used. When replacing any of components, be sure to use only manufacture’s specified parts shown in the parts list.
  • Page 55 Ref. No. Part No. Part Name & Description Remarks RHD14080 SCREW RDG0510 INTERMEDIATE GEAR RHD14078 SCREW RHW11011 WASHER RMC0437 SPRING BRL1A1CWD LIFT MOTOR RDG0482-1 REDUCTION GEAR RHW06001 WASHER RMB0650 EJECT SPRING RML0586-3 LIFTER RML0587-3 LINK RMM0230-1 EJECT ROD A RXG0050 TRANSFER GEAR RXK0318-5 HOLDER UNIT...
  • Page 56 Ref. No. Part No. Part Name & Description Remarks 44-2 K0L2LF000002 SWITCH(S501) 44-3 RHD14082 SCREW 44-4 RMA1364-2 HOLDER ANGLE 44-5 RMX0156-1 STOPPER RUBBER 44-6 XQN14+B4FC SCREW 44-7 XQN14+C12FZ SCREW XQN14+A12FC SCREW RMZ0670 SPACER RQT6862-B INSTRUCTION MANUAL RQT6864-K INSTRUCTION MANUAL (GH)...
  • Page 57 C111 ECUE1H470JCQ 50V 47P F1G1H470A422 Great user manuals database on UserManuals.info...
  • Page 58 Ref. No. Part No. Part Name & Description Remarks C113 F1G1C103A044 16V 0.01U C120 ECUENA104KBQ 10V 0.1U F1G1A104A014 C121 ECUE1C223KBQ 16V 0.022U F1G1C223A044 C122 F1G0J224A004 6.3V 0.22U C123 ECUE1E681KBQ 25V 680P C130 F1G1E472A059 25V 4700P C140 F1G1C103A044 16V 0.01U C201 F1J0J4750016 6.3V 4.7U C202...
  • Page 59 Ref. No. Part No. Part Name & Description Remarks C701 RCST0JY226RG 6.3V 22U F3F0J2260002 C702 ECUENA104KBQ 10V 0.1U F1G1A104A014 C704 F3E0G106A001 4V 10U C711 ECUENA104KBQ 10V 0.1U F1G1A104A014 C713,14 F5A421050001 4V 1U C721 F5A421040002 4V 0.1U C722 F5A421020001 4V 1000P C725,26 F1J0J4750016 6.3V 4.7U...
  • Page 60 Ref. No. Part No. Part Name & Description Remarks IC306 C0CBAAB00036 IC307,08 B1KBB0000006 IC401 C0GBD0000022 IC501 C2DBKJ000062 IC502 C3EBDG000039 IC503 C0EBC0000035 IC601 C0FBAJ000008 IC701 C1BB00000609 IC901 C0GBE0000003 IC902 C0JBAZ001928 JK201 RJJ36TK03-1C JACK,HEADPHONE K2HC106E0001 JK701 B3MAZ0000026 JACK,OPT/LINE JK702 K2HC103E0016 JACK,MIC L1,L2 RLQP100MT-W COIL G1C100M00016...
  • Page 61 Ref. No. Part No. Part Name & Description Remarks Q312 B1CHMC000001 TRANSISTOR Q313 B1CHHD000003 TRANSISTOR Q315 DTC144EETL TRANSISTOR B1GBCFNN0001 Q701 B1HFCFA00005 TRANSISTOR Q702 DTC144TETL TRANSISTOR B1GBCFNA0001 Q703 2SB1462STX TRANSISTOR 2SB14620SL Q901 DTC144EETL TRANSISTOR B1GBCFNN0001 Q910 DTC144EETL TRANSISTOR B1GBCFNN0001 Q911,12 B1DFCC000008 TRANSISTOR Q913,14 B1DFBG000004...
  • Page 62 Ref. No. Part No. Part Name & Description Remarks R315 ERJ2GED513X 1/4W 51K ERJ2RHD513X R317 ERJ6RSJR10V 1/10W 0.1 R318 ERJ2RKD474X 1/4W 470K R320 D1H81044A024 100K R321 ERJ2GEJ394X 1/4W 390K ERJ2RMJ394X R322 ERJ2GEJ225X 1/4W 2.2M ERJ2RMJ225X R323 ERJ2GEJ105 1/4W 1M D0GA105JA001 R324 D1BA3303A007 330K...

  • Page 63: Cabinet Parts Location

    Ref. No. Part No. Part Name & Description Remarks R905 ERJ2GEJ102X 1/4W 1K ERJ2RMJ102X R911 D1H447320001 R912 ERJ2GEJ6R8X 1/4W 6.8 RX111 D1H410420002 100K RX112 ERJ2GE0R00X 1/4W 0 D0YAR0000003 RX517,18 ERJ2GE0R00X 1/4W 0 D0YAR0000003 ABC1111P SW,HEAD K0L1BA000050 S801 RSG0051-P SW,PLAY S802 ABC1112P SW,REC K0L1BA000051...
  • Page 64 19. Packaging Great user manuals database on UserManuals.info...

  • Page 65: Schematic Diagram For Printing With A4

    20. Schematic Diagram for printing with A4 H0211 TN/HH...

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