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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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Audio System: MiniDisc digital audio system Laser: Semiconductor laser (=780 nm) Sampling frequency: 44.1 kHz Coding: Adaptive Transform Acoustic Coding (ATRAC / ATRAC3) No. of channels: 2 (left and right, stereo) 1 (monaural, play only) Frequency response: 20 Hz-20 kHz (+0 dB, -8dB) Wow and flutter: Below measurable limit General Input terminal OPT/LINE IN jack Impedance: 22k Input level: SENS H: 178mV SENS L: 500mV MIC jack Impedance: 600 Input level: SENS H: 0.4mV SENS L: 2.5mV Outpu
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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. - Specifications are subject to charge without notice. Weight and dimensions are approximate. 2002 Matsushita Electric Industrial Co., Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law. 1. Accessories - Rechargeable battery
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(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
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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. Handling the optical magnetism head unit 1. The optical magnetism head unit is an extremely high-precision construction and must not be subjected to impact, excessive v
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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. (as shown in Fig. 4 ) Caution The static electricity of your clothes will not be grounded through the wrist strap. So, take care not to let your clothes tou
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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. - After replacing the main components (optical pickup or traverse motor, etc.) of mechanism unit block, change to the adjust mode, and then perform
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- 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.
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5.3. Replacement for the open knob - Follow the (Step1)-(Step3) of item 5.1. - Follow the (Step1)-(Step4) of item 5.2.
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5.4. Replacement for the traverse motor - Follow the (Step1)-(Step3) of item 5.1.
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5.5. Replacement for the LCD - Follow the (Step1)-(Step3) of item 5.1. - Follow the (Step1)-(Step4) of item 5.2.
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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.
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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.
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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. Playback-only disc (Test disc RFKV0006) 2. Commercially available recordable disc (fully recorded with music) (magneto-optical disc) 3. Laser power meter (LE8010 or
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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. Enter the adjustment mode 1. Set the battery and connect the remote controller. 2. Turn off the power, and switch main unit’s HOLD s
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*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. Set the Unit to the Adjustment Mode Cautions About handling the optical pickup and the magnetic head. - The optical pickup and the magnetic head are structured precisely; therefore, they are
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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. (as shown in Fig. 6 ) 2-2 Locate the sensor of the laser power meter right over above the optical pickup (horizontally at a level of the disc position). (as shown in Fig. 7 ) [For use of MD cartridge type laser power meter.] 2-1 Set the laser
