Marantz CD42-The disk ejects but it is not closeing up...

andjur78 · 27th January 2007, 03:29 AM

Hi, Has anyone experienced the problem with this model where pressing the open/close button will not close up the tray?
Pushing the tray in manually will (only) get it to close.

The TACT switch on the main board is ok and the Micro is seeing it.
The motor and orange gear wheel look all ok.

Can anyone shed some light? Cheers.

Extreme_Boky · 27th January 2007, 08:25 AM

You may have greasy motor (inside - could be greasy commutator / semi shorted - requires high current to “get going"), or insufficient current drive (usually an OP with complementary transistor pair as the current boost), or slipping belt.

The uPC is seeing the button press, I recon follow the signal from uPC towards the tray motor: check the motor / belt / current drive.

Good luck,
Boky

SSassen · 29th January 2007, 09:55 AM

If you read more closely you'll notice the button reads 'open' not 'open/close', hence this is user error, or a classic case of RTFM, don't blame the CD-player! To close the tray simply push it gently, or press the play or any numerical button to select a track directly.

Best regards,

Sander Sassen
http://www.hardwareanalysis.com

tubenut · 29th January 2007, 11:01 AM

Or push the actual switch sitting below the tray on the face plate, that said "open" button mates with when tray is closed. Ie, the switch is an open close switch but as the button part is on the tray it only allows open.... you get what I mean I hope.

Had this stupid open button on my CD850, used to push the switch below the tray on that one....

Bricolo · 29th January 2007, 11:22 AM

Same thing on my Marantz CD62

Just use the "Play" buton. I wouldn't advice pushing the tray back, even gently. The tray gears already break after a few years of normal use, don't put more stress on them.

andjur78 · 30th January 2007, 06:34 AM

Yes. Pushing the tray in does start the loading sequence up.
It also makes sense to use the play button instead.
After obtaining a copy of the S.M. I checked the entire data/drive path right up to the tray drive motor itself. I could not fault any waveform from the manual and now all is making sense. Not a bad sounding old player.
Thanks everyone for your posts...

27th January 2007, 03:29 AM	#1
andjur78 diyAudio Member Join Date: Mar 2005 Location: Aussie	Marantz CD42-The disk ejects but it is not closeing up... Hi, Has anyone experienced the problem with this model where pressing the open/close button will not close up the tray? Pushing the tray in manually will (only) get it to close. The TACT switch on the main board is ok and the Micro is seeing it. The motor and orange gear wheel look all ok. Can anyone shed some light? Cheers.

29th January 2007, 09:55 AM	#3
SSassen diyAudio Member Join Date: Mar 2005 Location: Purmerend	If you read more closely you'll notice the button reads 'open' not 'open/close', hence this is user error, or a classic case of RTFM, don't blame the CD-player! To close the tray simply push it gently, or press the play or any numerical button to select a track directly. Best regards, Sander Sassen http://www.hardwareanalysis.com __________________ Acception without proper examination equals religion Condemnation without proper examination equals prejudice

29th January 2007, 11:01 AM	#4
tubenut diyAudio Member Join Date: Nov 2002 Location: South Africa, Jhb	Or push the actual switch sitting below the tray on the face plate, that said "open" button mates with when tray is closed. Ie, the switch is an open close switch but as the button part is on the tray it only allows open.... you get what I mean I hope. Had this stupid open button on my CD850, used to push the switch below the tray on that one.... __________________ Guillaume Croak Audio Exploration

29th January 2007, 11:22 AM	#5
Bricolo diyAudio Member Join Date: Nov 2002 Location: Grenoble, FR	Same thing on my Marantz CD62 Just use the "Play" buton. I wouldn't advice pushing the tray back, even gently. The tray gears already break after a few years of normal use, don't put more stress on them. __________________ Just remember: in theory there's no difference between theory and practice. But in practice it usually is quite a bit difference... Bob Pease

30th January 2007, 06:34 AM	#6
andjur78 diyAudio Member Join Date: Mar 2005 Location: Aussie	Ah ha! Yes. Pushing the tray in does start the loading sequence up. It also makes sense to use the play button instead. After obtaining a copy of the S.M. I checked the entire data/drive path right up to the tray drive motor itself. I could not fault any waveform from the manual and now all is making sense. Not a bad sounding old player. Thanks everyone for your posts...


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27th January 2007, 08:25 AM	#2
Extreme_Boky diyAudio Member Join Date: Dec 2003 Location: Sydney	You may have greasy motor (inside - could be greasy commutator / semi shorted - requires high current to “get going"), or insufficient current drive (usually an OP with complementary transistor pair as the current boost), or slipping belt. The uPC is seeing the button press, I recon follow the signal from uPC towards the tray motor: check the motor / belt / current drive. Good luck, Boky

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