Sharp MD-MS100 Test Mode
Dirk ([email protected])
Entering Test Mode on your MS100 portable
- Hold down display+enter/synchro button.
- Press play/pause.
- Microcomputer version and EEPROM version are indicated (1 second).
- Entire LCD panel illuminates (2 seconds).
- Test Mode is set.
Test Mode States
- Auto mode - automatic adjustment is performed
- Enter with play/pause button, change with play/pause button.
- Result mode - set value is displayed
- Enter with extra bass/delete button, change with fast forward
button, display shows different measured values.
- Manual mode - measurements/temperature/cont. playback
- Enter with display button, show temperature by press. displ. button
change with fast forward button (Attention focus+tracking
adjustments! Press stop to exit)
- Inner mode - needs sony tdys-1 high reflection disc
- Enter with volume up button, changes with vol up.
- Normal mode - memory capacity etc. are displayed
- Enter with mode/space, change with mode/space.
- Error data display mode - error info is displayed
- Enter with volume down button, change to error data 0 by pressing volume
down, press fast forward to show error data 2...9 display
- Test/play mode - C1/ADIP error rate display/continous playback from
a specific address
- Enter with edit/auto mark button, change by pressing
play/pause, edit/auto mark, extra bass/delete, ff, f rev. buttons
- Test record mode - continous record mode/laser power adjust
- Press rec.,press rec. once again for address setting,
set write address with ff + f rev., press play/pause to make a cont rec.
- Digital input mode - SCMS information etc.
- Press kana/alphanumeric button, change by pressing kana/alphanumeric button
- EEPROM setting mode - digital servo system number displayed/
settings are changed manually
- Change setting after changing the EEPROM by pressing enter in test mode!!!
By pressing different buttons of your unit you can enter
the different modes. Exit test mode by pressing stop/power off.
Step back from any modes by pressing the stop button!
When I say ``change with...'' above, I mean that you can step through the chosen mode.
Attention! Don't press any buttons if you don't know exactly what
you are doing. The service manual contains all the details of how to
handle the different modes.
Sharp MS-200 Test Mode
Andrew Tonner ([email protected])
Entering Test mode on the MS200
This is the same method used for the MS100.
- While the unit is powered off, hold down [Enter/Sync] + [Display] and press
- LOADING appears for a split-second.
- A version number appears on the screen, (mine is Y27AfJ).
- All LCD components light up.
- TEST appears. (pressing [STOP] at this point turns off the unit.)
- To select a sub-mode, press [BASS/DEL].
- AUTO Appears. (pressing [STOP] at this point returns you to the TEST
- Use skip back [|<<] and skip forward [>>|] to page through the sub mode
- T PLAY
- T REC
- E DATA
- Press play [>] at one of these to enter that submode. The submodes seem to
be the same as those given for the MS-100, but aren't in the same order,
and may use different controls. In most of the submodes, pressing [STOP]
returns you to the test sceen.
- Entering test mode seems to reset the settings saved for A-PLAY, Psave,
Some modes I've tried
Maybe someone with the service manual could fill us in on the functions of
the other sub-modes, etc.?
- AUTO - Appears to do an auto-calibration of the unit, displaying some hex
after which it displays ADJ.OK.
- NORMAL mode - The recorder starts up into functioning mode. The buttons
work the same as they would when the unit is in non-test mode, but the lcd
display is altered:
- the dot matrix portion shows a readout such as: "001 1F0176", where 001 is
the track number, 1F0 is the unit's status (1F0=reading disk, 3F0=ram is
full, 000=not reading, etc.)
- the level indicator shows the amount of data in anti skip ram.
- T PLAY mode - Test read mode. Appears to read sectors from the md. Press
switch between current sector, and what appear to be bit error rate before
bit error rate after correction.
It is rather educational to put the unit into "test mode" (turn the unit
off, then hold the enter/sync button and display button and press play)
and play back an MD in "Normal" mode (press Bass/Del, then >> until the
display says "Normal", then press "play").
When you play an MD in this mode, the level-meter at the top shows how
full the unit's anti-shock buffer is. You can stop the MD and toggle
P-Save mode by holding "Display" for 2 seconds (MD has to be stopped).
When P-Save mode is off the buffer fills up and stays full, when it is
on "auto" the buffer fills up, then depletes for a while, then fills up
again, and so on. You can watch the indicator bounce around. If you
jostle the unit a lot at this time the indicator will go down but I
didn't manage to make it skip. Maybe I wasn't violent enough.
Press "stop" to back out of any test modes you don't want to play with
anymore and again to turn off test mode.