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Mark Levinson Drive problem
Mark Levinson Drive problem
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Old 26th March 2020, 07:32 PM   #1
Agosto is offline Agosto
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Join Date: Mar 2020
Default Mark Levinson Drive problem

I am working on a newly acquired ML 39. Drawer opens, but does not close. After drawer is in open position, display shows "add disk". After loading disk and pressing "Play" or "close", drawer does not move and display only shows "close" while holding the "Close" button. If I manually close the drawer, display shows "Stopped!" and upon pushing "Play" shows "Drawer?".
Laser unit does not spin CD, but laser is moving, however, with some "ratcheting" noise. I know that a service manual is unobtanium but perhaps someone here can point me in the right direction, i.e. supply voltage to the Philips CDM12 unit, other voltages required, timing sequence for the drawer etc.
I searched the archive on this forum, but could not find adequate information.
Many thanks in advance.
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Old 27th March 2020, 02:41 PM   #2
Algar_emi is offline Algar_emi  Canada
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Mark Levinson Drive problem
You may need to recalibrate the drawer. There is a procedure to do so somewhere, send me an email and I'll try to send you a copy. Had the same problem on my ML390.

Had also to replace one of the regulator IC, don't remimber which one. I suggest that you check all of them, may be a too low 7805 somewhere...

After i fix that the player was just fine...
SB
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Old 28th March 2020, 12:51 PM   #3
Agosto is offline Agosto
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Thank you for your input. I already received calibration procedures and - unfortunately - it failed. I checked the 7805s before, all around 4.97V. So I trust this is OK. Still poking around to further locate the problem. Really difficult without schematics....
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