ORDER No.AD0211148C3 Portable MD Recorder SJ-MR230DGH / SJ-MR230DGK Colours (S)...................Silver Type (R)...................Red Type [(GK) area only.] (A)...................
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) Frequency response: 20 Hz-20 kHz (+0 dB, -8dB) Wow and flutter: Below measurable limit 1 (monaural, play only) 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.
LP4: About 70 hours About 21 hours Normal About 77 hours About 35 hours LP2: About 100 hours About 50 hours LP4: About 117 hours About 62 hours Both together 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.
(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.
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.
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.
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.
- 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.
5.3. Replacement for the open knob - Follow the (Step1)-(Step3) of item 5.1. - Follow the (Step1)-(Step4) of item 5.2.
5.4. Replacement for the traverse motor - Follow the (Step1)-(Step3) of item 5.1.
5.5. Replacement for the LCD - Follow the (Step1)-(Step3) of item 5.1. - Follow the (Step1)-(Step4) of item 5.2.
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.
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.
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 autoadjustment” 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.
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 switch off. 3.
*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 very fragile.
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.
5. Perform the read power adjustment. Set the light power at 600 W ±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. Caution: Proceeding on to the subsequent adjustment procedure with the read power exceeding 600 W±10% will result in damage to the optical pickup. 6. Press the key of the remote controller (“LP ” changes to “RLDA ” in the LCD).
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.). Note) When “0FNG” is displayed, check “7. Troubleshooting Guide” in order. 6.2.4. Magneto-optical disc automatically adjustment 1.
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. How to get out the adjustment mode Remove the battery when you finish the adjustment mode. 6.3. Checking the main unit's keys 1. Set the battery and connect the remote controller. 2. Turn off the power.
Main unit’s key Check point Voltage (ON) Voltage (OFF) PLAY IC501 100pin 0V 2.2V STOP IC501 100pin 1.76V 2.2V FOW IC501 99pin 0.66V 2.2V REV IC501 99pin 0.88V 2.2V HOLD OFF IC501 42pin 0V 2.2V REC IC501 100pin 0.22V 2.2V VOL+ IC501 99pin 1.1V 2.2V VOL- IC501 99pin 1.32V 2.2V MARK MODE IC501 99pin 0V 2.2V MODE IC501 99pin 0.22V 2.2V EQ IC501 99pin 0.44V 2.2V 7. “Checking the main unit’s key” is finished. Remove the battery when you exit from this mode.
7.1.2.
7.2.
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.
“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. In such a case, check the peripheral parts of the magnetic head, repair or replace defective parts with normal ones. 9.
: 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. No mark: MD STOP ( ): MD PLAY < >: MD REC Important safety notice: mark have special characteristics important for safety.
14. Wiring Connection Diagram 15. Terminal Function of IC's 15.1. IC1 (AN22010A-VF) : RF AMP Pin No. Mark I/O Division Function 1 LDO O Laser amp output terminal 2 LD IN I Laser amp reverse input terminal 3 APCPD I Photo diode light quantity det. input terminal 4 APC REF I APC amp reference voltage input terminal 5 ARFO O RF amp.
Pin No.
Pin No. Mark I/O Division Function 47 D I Main beam D signal input terminal 48 C I Main beam C signal input terminal 15.2. IC101 (M66621BSG) : ATRAC ENCORDER/DECORDER, SERVO SIGNAL PROCESSOR Pin No.
Pin No.
output terminal Pin No.
Pin No.
Pin No.
Pin No.
terminal Pin No.
Pin No.
Pin No. Mark I/O Division 1 AVREFO I 2 AVDD — Power supply terminal for A /V converter (+2.2V) 3 AVSS — Connected to GND 4 P80/ ANO0 — Connected to GND 5 P80/ ANO1 — Connected to GND 6 AVREF1 I 7 NMI — 8 LINK RXD I LINK serial communication RXD input terminal 9 REM_DATA O Remote control LCD driver data output terminal 10 P32/ SCK1 — Not used, open 11 VDD — Power supply terminal (+ 2.2V) 12 VSS — GND terminal 13 X1 I Main clock input terminal (f =10.
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Pin No.
Pin No. Mark I/O Division 63 EVSS — GND terminal 64 EVDD — Power supply terminal (+ 2.
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17. Replacement Parts List Notes: *Important safety notice: mark have special characteristics important for safety. Components identified by 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. *Warning: This product uses a laser diode. Refer to caution statements.
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C111 ECUE1H470JCQ 50V 47P 1 F1G1H470A422
Ref. No. Part No. Part Name & Description Pcs Remarks C113 F1G1C103A044 16V 0.01U 1 C120 ECUENA104KBQ 10V 0.1U 1 F1G1A104A014 C121 ECUE1C223KBQ 16V 0.022U 1 F1G1C223A044 C122 F1G0J224A004 6.3V 0.22U 1 C123 ECUE1E681KBQ 25V 680P 1 C130 F1G1E472A059 25V 4700P 1 C140 F1G1C103A044 16V 0.01U 1 C201 F1J0J4750016 6.3V 4.7U 1 C202 ECUVNJ334KBV 6.3V 0.33U 1 C204,05 F3E0G106A001 4V 10U 2 C206 F5A421040002 4V 0.
Ref. No. Part No. Part Name & Description Pcs Remarks C701 RCST0JY226RG 6.3V 22U 1 F3F0J2260002 C702 ECUENA104KBQ 10V 0.1U 1 F1G1A104A014 C704 F3E0G106A001 4V 10U 1 C711 ECUENA104KBQ 10V 0.1U 1 C713,14 F5A421050001 4V 1U 2 C721 F5A421040002 4V 0.1U 1 C722 F5A421020001 4V 1000P 1 C725,26 F1J0J4750016 6.3V 4.7U 2 C727,28 F3E0G106A001 4V 10U 2 C801 F5A421050001 4V 1U 1 C802 F5A421040002 4V 0.1U 1 C803 F1G1C103A044 16V 0.01U 1 C804 ECJ1VB0J105K 6.
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Ref. No. Part No. Part Name & Description Pcs Remarks Q312 B1CHMC000001 TRANSISTOR 1 Q313 B1CHHD000003 TRANSISTOR 1 Q315 DTC144EETL TRANSISTOR 1 Q701 B1HFCFA00005 TRANSISTOR 1 Q702 DTC144TETL TRANSISTOR 1 B1GBCFNA0001 Q703 2SB1462STX TRANSISTOR 1 2SB14620SL Q901 DTC144EETL TRANSISTOR 1 B1GBCFNN0001 Q910 DTC144EETL TRANSISTOR 1 B1GBCFNN0001 Q911,12 B1DFCC000008 TRANSISTOR 2 Q913,14 B1DFBG000004 TRANSISTOR 2 R1 D1H447220001 4.7K 1 R2 ERJ2GEJ272 1/4W 2.
Ref. No. Part No. Part Name & Description Pcs Remarks R315 ERJ2GED513X 1/4W 51K 1 ERJ2RHD513X R317 ERJ6RSJR10V 1/10W 0.1 1 R318 ERJ2RKD474X 1/4W 470K 1 R320 D1H81044A024 100K 1 R321 ERJ2GEJ394X 1/4W 390K 1 ERJ2RMJ394X R322 ERJ2GEJ225X 1/4W 2.
Ref. No. Part No. Part Name & Description Pcs Remarks R905 ERJ2GEJ102X 1/4W 1K 1 R911 D1H447320001 47K 1 R912 ERJ2GEJ6R8X 1/4W 6.
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