Panasonic SJ-MR200 User manual

ORDER No.AD0009165C8
Portable MD Recorder
SJ-MR200
MD unit: RAE1630Z-M Mechanism Series
Colour
(S)...................Silver Type
(W)..................White Type
Areas
EB...................Great Britain.
EG...................Europe.
GH...................Hong Kong.
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)
No. of channels: 2 (left and right, stereo)
1 (monaural)
Frequencyresponse: 20 Hz-20 kHz (+0 dB, -6dB)
Wowand flutter: Belowmeasurable limit
General
Input terminal
OPT/LINE IN jack
Impedance: 47k
Input level: SENS H:178mV
SENS L:500mV
MIC jack
Impedance: 600
Input level: 0.4mV
Output terminal
Output Jack: Phones, 22
Power output: 3.5 mW+3.5 mW
Power supply
Rechargeable battery: DC 1.2V
(included rechargeable battery)
Battery: DC 1.5V (One LR6, AA, UM-3 battery)
AC adaptor: DC 1.8V (included AC adaptor)
Dimensions (WxHxD)
Cabinet dimensions: 78.2x71.6x16.8
mm
incl.projecting parts: 79.9x73.6x18.6
mm
Weight: 120 g (with
battery)
94 g (without battery)
Playtime
(When used in hold mode, at 25°C, on a flat, stable surface)
Batterytype:PlaytimeRecord time
Rechargeable: About 15 hoursAbout 7 hours
Panasonic alkaline: About 21 hoursAbout 3 hours
Both together: About 38 hoursAbout 15 hours
Charger
Input: AC 220 V (GH) / AC220-230 V (EG) /
AC 230-240V (EB), 50/60 Hz 8W
Recharging time: About 3 hours
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Notes:
- The playtime maybe less depending on the operating
conditions.
- Specifications are subject to charge without notice. Weight
and dimensions are approximate.
2000 Matsushita Electric Industrial Co., Ltd. All rights reserved.
Unauthorized copying and distribution is a violation of law.
1. Accessories
- Rechargeable batterywith carrying case .............1pc.
(RFKFHFAZ01EM)
- External batterycase...............................................1pc.
(RFA1537-S)
- Carrying case.........................................................1pc.
(RFC0056-K)
- Wired remote control.............................................1pc.
(N2QCBD000007)
- Stereo earphones..................................................1pc.
(RFEV335P-SA)
- Connection cable..................................................1pc.
(K2KA39B00001)
For EB area
- AC adaptor.............................................................1pc.
(RFEA003B-S)
For EG area
- AC adaptor.............................................................1pc.
(N0JCAD000001)
For GH area
- AC adaptor.............................................................1pc.
(RFEA004H-S)
2. Precation of Laser Diode
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3. Operating Instructions
4. Handling Precautions for Traverse Deck
The laser diode in the traverse deck (optical pickup) maybreak down due to potential difference
caused bystatic electricityof clothes or human body.
So, be careful of electrostatic breakdown during repair of the traverse deck (optical pickup).
4.1. Handling the traverse deck (optical pickup)
1. The traverse deck (optical pickup) is an extremelyhigh-precision
construction and must not be subjected to impact, excessive
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vibration, or other types of rough handling.
2. In order to prevent static electricitydamage to the laser diode,
use a short pin or similar tool to short the optical pickup’s flexible
circuit boards after theyhave been disconnected from the main
circuit board. (as shown in Fig. 1 )
3. Handle the flexible circuit boards with care; excessive force could
cause them to be broken.
4. Do not turn the pre-set variable resistor (for adjustment of the
laser power); it has been adjusted at the factory.
(as shown in Fig. 2 )
Fig. 1
Fig. 2
4.2. Grounding for electrostatic breakdown prevention
1. Human bodygrounding
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 traverse deck (optical pickup) is placed, and ground the sheet.
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(as shown in Fig. 4 )
Caution
The static electricityof your clothes will not be grounded through
the wrist strap.
So, take care not to let your clothes touch the traverse deck (optical
pickup).
Fig. 3
Fig. 4
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 reassemblyafter operation checks or replacement, reverse the
respective procedures. Special reassemblyprocedures are
described onlywhen required.
- After replacing the main components (optical pickup or traverse
motor, etc.) of mechanism unit block, change to the adjust mode,
and then perform the “ROM/RAM auto-adjustment”.
5.1. Checking for the main P.C.B.
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- Check the main P.C.B. (Aside) as shown below.
[Checking for the main P.C.B. (B side)]
- Each parts on main P.C.B. (B side) can not be checkesd directly,
however, for the checking of main component parts on P.C.B.,
refer to the “Checking procedures of main components parts on
the main P.C.B. (B side).
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5.2. Replacement for the intermediate cabinet
- Followthe (Step 1) - (Step 3) of item 5.1.
5.3. Replacement for the open knob and lock unit
- Followthe (Step 1) - (Step 3) of item 5.1.
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- Followthe (Step 1) - (Step 3) of item 5.2.
5.4. Replacement for the traverse motor
- Followthe (Step 1) - (Step 3) of item 5.1.
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5.5. Replacement for the LCD
- Followthe (Step 1) - (Step 3) of item 5.1.
- Followthe (Step 1) - (Step 3) of item 5.2.
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5.6. Replacement for the lift motor
- Followthe (Step 1) - (Step 3) of item 5.1.
- Followthe (Step 1) - (Step 3) of item 5.2.
- Followthe (Step 1) of item 5.5.
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5.7. Replacement for the optical pickup
- Followthe (Step 1) - (Step 3) of item 5.1.
- Followthe (Step 1) - (Step 3) of item 5.2.
- Followthe (Step 1) - (Step 4) of item 5.4.
- Followthe (Step 1) 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 “ROM/RAMauto-adjustment”.
6.1. Instruments to prepare
1. Playback-onlydisc (Test disc RFKV0006)
2. Commerciallyavailable recordable disc (fullyrecorded with
music) (magneto-optical disc)
3. Laser power meter (LE8010 or compatible meter)
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4. Remote controller
6.2. Laser power adjustment, Playback-onlydisc/magneto-optical
disc automatic adjustment
6.2.1. Enter the adjustment mode
1. Set the batteryand connect the remote controller.
2. Turn off the power, and switch main unit’s HOLD switch off.
3. Press the VOL+, VOL-, , and buttons on the remote
controller within two seconds. (as shown in Fig. 5 )
Fig. 5
4. When the adjustment mode is activated, “ T1 EX ” will be
displayed on the LCD of remote controller. After “ T1 EX ” is
displayed, select the desired adjustment item with the button
or button of the remote controller. (If it is not displayed,
perform the procedures written above again.)
Adjustment mode
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Adjustment mode Display
Laser power adjustment T1
Magneto-optical disc automatic adjustment T2
Playback-onlydisc automatic adjustment T3
EFMjitter meajurement T4
Record inspection T5
REC jitter meajurement T6
Magneto-optical disc automatic adjustment
value check
T7
Playback-onlydisc automatic adjustment value
check
T8
Error rate measurement (double velocity) T9
AD read result confirmation TA
ROMcollection check sum TB
DRAMcheck TC
Reliabilitytest TD
Tilt measurement (disc middle speed) TE
PWB inspection (audio test) TF
*In the displayof T1 ~ TF shown above, you must adjust T1, T2 and TF. You must perform the
adjustment byobserving the order T1 T2 T3.
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, theyare veryfragile. Be careful not to touch them with
the edge of the laser power meter. Do not touch the lens.
- The sensor of the laser power meter is a veryfine part. Be careful
not to touch it to the optical pickup lens.
- Do not loosen or remove the magnetic head installing screw.
- The focus point of the laser reaches to 356°F. Therefore, avoid
adjusting using laser power for a long time because the sensor of
the laser power meter maybe burned.
- Do not allowthe write power to even momentarilyreach or exceed
5 mW. Doing so will result in damage to the optical pickup.
- Do not set the unit to the laser power adjustment mode with the
MD loaded. Doing so mayresult in damage to the MD.
- Laser diode in the optical pickup maybe destroyed bythe
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staticelectricitygenerated in your clothes or body. Be especially
careful with the static electricity.
6.2.2.2. Adjustment Procedure
1. Have “ T1 EX ” indicated on display, and move the optical pickup
to the most inside (onlywhen a MD cartridge type laser power
meter is used).
2. Uncover the laser power meter. (as shown in Fig. 6 )
Fig. 6
3. Locate the sensor of the laser power meter at a position above
the optical pickup (horizontallyat a level of the disc position). (as
shown in Fig. 7 )
Fig. 7
4. Press the PLAY keyof the remote controller (“ T1 EX ” changes to
“ LD ” of the LCD).
5. Press the keyof the remote controller (“ LD ” changes to “ LP
” of the LCD).
6. Perform the read power adjustment. Set the light power at 600 W
±10%byusing VOL+ and VOL- keyof the remote controller.
Caution:
Proceeding on to the subsequent adjustment procedure with the
read power exceeding 600 W±10%will result in damage to the
optical pickup.
7. Press the keyof the remote controller (“ LP ” changes to “
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RLDA” in the LCD).
Specified range (read power): 600 W±10%or lower
8. Perfome the light power adjustment. Set the light power at
4.55mW byusing VOL+ and VOL- keyof the remote controller. If
at this time the amperage between TP405 and TP406 (laser
current) is 70mAor higher, it is conceivable that theoptical pickup
is defective.
Specified range (light power): 4.5mW
Caution:
Do not allowthe write power to even momentarilyreach or exceed
5 mW. Doing so will result in damage to the optical pickup.
9. Press the keyof the remote controller (“ RLDA” changes to “
LP ” on the LDC. At this time, the data is written to EEPROM.).
10. Press the PLAY keyon the remote controller (“ LP ” changes to “
T1 EX ” on the LCD.).
11. Remove the laser power meter. Laser power adjustment is
finished.
[REFERENCE]
For use of MD cartridge type laser power meter: / We recommend you to use a stick type laser
power meter for laser power adjustment of this set. / But if available is a MD cartridge type
only, arrange the set as shown in Fig. 9 , and from the state of “6.2.1. Enter the adjustment
mode”, start the laser power adjustment. / (As for the method of disassembly, refer to “5.
Operation checks and main component replacementprocedures”.)
Fig. 8
6.2.3. Magneto-optical disc automaticallyadjustment
1. Have “ T2 EX ” indicated on display, and move the optical pickup
to around the center (onlywhen a MD cartridge type laser power
meter is used).
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