MD Service Mode Warning
What happened to these users could happen to you!
(A service manual might have helped. They are available from Sony
see the MiniDisc FAQ
for the address.)
Yesterday I entered test mode, just for curiosity, just to see what
error rate would look like and things.... I thought I didn't change
anything, but I guess I did. Now my JE500 is playback only! Start a
recording and it says "retry" for a couple of seconds, then it gives up
and says "disc error". Of course TOC writing doesn't work either.
Anyone has any idea how the different things in test mode works? How to
make writing work again? Any help appreciated! Thanks.
Norway, December 1997
About a month ago I posted to the list stating that I was unable to record
with my 701. After tons of testing and taking the thing apart dozens of
times, I concluded that I was S.O.L. I ordered another 701 from S.D., and when
I got it today one of the first things I did was take note of ALL test
parameters for my new 701. After going back and comparing this with my
non-recording unit, I found quite a few things that had changed (some that I
didn't remember touching). I went and set all options to what my new unit
said was default. I fired up the old unit and viola! it records.
Wisconsin, USA, February 1998
When I first got my 702 I tried entering test mode, and at the first
screen I pushed the >> button twice (thinking it would bring up a menu).
Upon inspection today, I discovered that this moves the optical head.
So today I did the auto-align and things seem better so far. This
mistake may have been performed by others too, so if you did this,
here's how to fix it.
- Enter test mode by holding Enter/Sync, DISPLAY and PLAY at the same
time. TEST appears.
- Press BASS/DEL
- AUTO1 appears
- Press PLAY
- Adj.Ok appears and my problems were fixed. (Press STOP to exit test
Help! I seemed to have changed some of the parameters on the MZ-E2 test
mode. Is there any way to change them back to the factory defaults?
-Alabama, USA, Sept 1998
I entered test mode, just to see how it look like.... I thought I didn't
change anything, but I guess I did. Now my MDSJE500 is playback only!
Recording doesn't work and TOC writing doesn't work either.
When I record something I can't play it. When I eject the disc and
reinsert it the MD RECORDER always says "Blank Disc".
Is there any way to fix my MD recorder?
Please help me.
Croatia, March 1999
I was trying the "Nintendo sequence" for getting my MZ-R50 into service
mode to disable the SMCS (I have a Holly Cole CD that won't copy to
minidisc - it splits a 40 something minute CD into about 300 tracks,
with breaks between each of them). I am fairly sure I didn't actually
change any parameters, though I did press buttons at random to see what
they did (very stupid move). Took the battery out, popped it back in,
hit play, and all I got was a rapid series of "pings". At this point I
was very scared. Turns out I was lucky; that minidisc is now in the bin
- I guess I destroyed the TOC, but everything else seems to work fine.
My Big Tip: leave service mode alone unless you have a few spare
I got into service mode and of course I now have a non-functional MD unit. Does
anyone have the default setting for the MZ-R2, or an outline of the
abbreviations in service mode. Luckily this is my experimentation device so
I can do anything with it. Thanks for the advice.
He follows up
I found your site, got excited, got into service mood, changed
everthing, lost control, lost use of my Minidisc unit, found another
owner, got the defaults, and now would like to send them to you so that if this
happens to anyone else the can regain the use of their player. Mine
now works again.
I am writing this mail after searching all the Minidisc pages that you
and the others have. I have a Sony MZ-R90 MD recorder. About a week
ago I got into its service mode wrongly. I don't know how I did it and
can't get out of it. I took its battery out and it didn't work. I
think it has an onboard battery. What should I do to get out of the
From subsequent email it appears this user
actually got into service by accident, as a result of his battery
running down. -eaw
Turkey, April 2000
Help I was in the service mode on the R55 and changed the MECHA setting. I
did not mean too all I want to do is to get it back to the default setting
so I can open my mini disc again.
USA, June 2000
I have the Sharp MD-MS701 and I tried the test (aka "service") mode
for fun. Suddenly, the recorder couldn't read the TOC. I tried it
over and over, but I seemed nothing would fix it. Then I had a
brainstorm. I thought if the Minidisc Recorder is like a RAM in my PC
it would forget all adjustments if I switched off the power. So I did
it, I pulled off the recharge-cable and then the rechargeable
battery. After I applied power and switched it on again and it ran!
Now a stone has fallen from my heart. This might be important
information for some other Sharp 701 owners.
Germany, August 2000
I was wondering if anyone has documented the default
bios settings for the MZ-R50 or if someone could take the time to check them
for me...My little cousin was playing with my minidisc player and I think I
had left it in test mode the night before (I have to put it in test mode to
fix a LCD problem, my screen is blank after 3 days unless I go into test
mode and turn it off again) anyhow, I turned it on and the laser was
clicking beyond the minidiscs specs....I took it to sony and they told me
it was gonna cost me 80$ for them to retune the bios using the controls...so
if anyone out there can save me 80$, i'd appreciate it greatfully!
USA, March 2001