walkdude Posted February 9, 2011 Report Share Posted February 9, 2011 Well I was looking into my walkman's service menu to do the ATRAC Type R hack along with the R900 Features hack while learning how it works by looking in the service manual, but I messed up some things so I panicked and then decided to do a 021 Reset NV... Now it just sits at the service menu blink, according to the manual I need to do the electrical adjustments, but all I have is MO type MD's and no CD type MDs... so I cant do all of the adjustments... Can anyone help me? I've tried http://www.minidisc.org/sony_mzr_reset.html but I cant just do a pull battery, it goes back to the blinking between a full lit screen and the version numbers... Would anyone be a kind soul and be able to mail me a Premastered MD so I can finish my adjustments and I could send it back? - Walkdude. Quote Link to comment Share on other sites More sharing options...
walkdude Posted February 9, 2011 Author Report Share Posted February 9, 2011 Hey! It works! I followed the instructions a bit closer, but this time I decided to press the volume buttons on 0 24 and I got it to display FF, and now it works! I think that this should be mentioned in this fix that was posted on http://www.minidisc.org/sony_mzr_reset.html "My way(It's my way or the highway!) Go to 0 24 You will see Assy and some value after it. So now : 0 24 (Assy) xx->FF Press Pause. Take out the power. Put it back in." Quote Link to comment Share on other sites More sharing options...
jim.hoggarth Posted February 10, 2011 Report Share Posted February 10, 2011 Hey! It works! I followed the instructions a bit closer, but this time I decided to press the volume buttons on 0 24 and I got it to display FF, and now it works! I think that this should be mentioned in this fix that was posted on http://www.minidisc...._mzr_reset.html "My way(It's my way or the highway!) Go to 0 24 You will see Assy and some value after it. So now : 0 24 (Assy) xx->FF Press Pause. Take out the power. Put it back in." What you have succeeded in doing is overriding the process flags so the firmware just thinks the adjustment have successfully been made. (the ASSY part shows something like OO or 11 initially to indicate no adjustments made, and FF when all adjustments successful. Going straight back into service mode when the battery is reconnected indicates that the firmware knows not all adjustments have been made yet). In reality you have reset all the machine's settings to the default and bypassed at least some of the adjustments: that includes temperature and electrical offsets, voltages, focus adjustments, etc etc. That said, my suspicion is that many of these machines came out of the factory in that state anyway, and the design of the standard (ie non-HiMD) machines is very forgiving in this respect. If you suffer any odd problems, such as protracted delays when seeking from track to track, or odd drop-outs in playback, you should really perform a full recalibration and adjustment. But then you will need a digital voltmeter, a laser power meter, a thermometer, a lab grade power supply and the test discs to do a *proper* job. Best not to reset the NVRAM at all! Jim Quote Link to comment Share on other sites More sharing options...
walkdude Posted February 10, 2011 Author Report Share Posted February 10, 2011 What you have succeeded in doing is overriding the process flags so the firmware just thinks the adjustment have successfully been made. (the ASSY part shows something like OO or 11 initially to indicate no adjustments made, and FF when all adjustments successful. Going straight back into service mode when the battery is reconnected indicates that the firmware knows not all adjustments have been made yet). In reality you have reset all the machine's settings to the default and bypassed at least some of the adjustments: that includes temperature and electrical offsets, voltages, focus adjustments, etc etc. That said, my suspicion is that many of these machines came out of the factory in that state anyway, and the design of the standard (ie non-HiMD) machines is very forgiving in this respect. If you suffer any odd problems, such as protracted delays when seeking from track to track, or odd drop-outs in playback, you should really perform a full recalibration and adjustment. But then you will need a digital voltmeter, a laser power meter, a thermometer, a lab grade power supply and the test discs to do a *proper* job. Best not to reset the NVRAM at all! Jim According to the service manual, all revisions of this Walkman after 1.0 have some settings hard wired in the macros... everything seems fine, its just that I cant do the CD type calibration and the only thing I lack is probably a laser power meter and the test disc Otherwise the Walkman seems to have re-calibrated its MO Disc/Electrical settings by itself... However I'd still like to obtain a CD type disc to fully recalibrate this unit. Quote Link to comment Share on other sites More sharing options...
jim.hoggarth Posted February 11, 2011 Report Share Posted February 11, 2011 There is a good chance that simply running the CD and MO auto-adjust routines is enough to get a working machine. As I said before, the standard MD machines can be very forgiving. Have you tried shopping on eBay for a premastered CD minidisc? The UK site ebay.co.uk is awash with minidiscs at the moment. There is a resurgence of interest in MD titles, some of which can go expensive, but there are always the naff ones coming up that you can buy for next to nothing as nobody is really interested, especially if it is just the disc without a case and inserts. You only need it to run the MO auto-adjust routine anyway. Examples are The Spice Girls or Billie Piper. Just find one starting at 99p and ask the seller if they will ship abroad (I am assuming you are not in the UK). It may not be as expensive to post as you think. The Royal Mail's postal charges are a total farce anyway. Posting a mains adapter to Sweden this afternoon cost me GBP 1.34. That is several hundreds of miles by aeroplane. If I had posted it to Leeds, which is about 6 miles away, it would have cost GBP 1.47. Go figure. They adjusted their packet prices once eBay started getting popular over here (or perhaps I am just getting cynical in my old age)! Jim Quote Link to comment Share on other sites More sharing options...
sfbp Posted February 12, 2011 Report Share Posted February 12, 2011 Jim, are you sure any disk can act as test CD disk? (we know, and agree on the fact, that for HiMD an absurdly expensive test disk is needed). Quote Link to comment Share on other sites More sharing options...
jim.hoggarth Posted February 12, 2011 Report Share Posted February 12, 2011 Jim, are you sure any disk can act as test CD disk? (we know, and agree on the fact, that for HiMD an absurdly expensive test disk is needed). Yes, sure. It's not ideal of course, but for the standard MDs alignment completes successfully. Quote Link to comment Share on other sites More sharing options...
sfbp Posted February 12, 2011 Report Share Posted February 12, 2011 that sounds like fun - I may even try it as I possess exactly 1 CD-MD. Adjusting LP by hand works fine too, though. Quote Link to comment Share on other sites More sharing options...
walkdude Posted March 2, 2011 Author Report Share Posted March 2, 2011 I replicated my findings with another stock R500, it turns out that all units produced with a firmware Above 1.0, have all their factory settings stored in the ResNV Macro, thus making it easier for the sony techs to repair units. All the CD, MO and Power settings from the ResNV R500 matched or were close to the stock R500 in every way. But in comparison, my unit is a Canadian model, and the other is a US model, so the power options varied by one or two hex numbers which is to be expected, The unit just sits and waits for Assy11 to be set to AssyFF so the machine knows that the calibration is already there. So, In theory. using ResNV correctly on a unit above 1.0 firmware will restore a bad R700/R500/G750/N707/N505/N710 hack, but if it is in fact a 1.0 model, it will need to have ALL the applicable adjustments done that are in the service manual as well. - Walkdude Quote Link to comment Share on other sites More sharing options...
sfbp Posted March 3, 2011 Report Share Posted March 3, 2011 The mechanism for HiMD is similar. I was able to skip the third disk (I tried it and it failed but the unit was fine), and used an 80m disk formatted to HiMD for the second one. The sequence of the relevant byte (1931 on the RH910, I don't know about first or third gen yet, as I feel one needs to be desperate to do alignment without the "proper" alignment disk from Sony) is: After reset: 00 After CD step: 11 After HiMD1 step: 37 After HiMD3 step(presumably): FF Note these look like bit fields, whose meaning is unknown and undocumented, of course. When I got to 37 and the third step failed, I simply (as you did) FF'd it. (is that a new verb?). Presto! This fixed the servo mechanism. But I still needed to use the LPM to adjust actual laser power to get proper TOC-writing. I should not speculate, but perhaps precisely because I didn't finish. Stephen PS I have no idea whether the failure in Step 3 was expected or an accident. As the unit is working again, I have not much motivation to find out. Quote Link to comment Share on other sites More sharing options...
walkdude Posted March 9, 2011 Author Report Share Posted March 9, 2011 It turns out I can use my MD-6LCL MD Lens cleaner as a Calibration CD (and resultant cleaner) in service mode, once you do the proper CD adjustments, the MD adjustments fly by in seconds (I recommend doing the MO P&R macro (20 seconds record + MO calibrate) right after also with an MD you can afford to blank). - Walkdude Quote Link to comment Share on other sites More sharing options...
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