Marantz CD63KI Not Recognising CDs

[dlflclhl]

My Marantz CD63 mkII KI Signature has stopped working. The obvious fault is that it won’t recognise a CD when it’s in the tray. When you put a disc in, the display just shows DISC. On opening the player I can see that the disc does not spin when ‘play’ is pressed. I have cleaned the laser lens but this had no effect. I’ve also now replaced the whole laser assembly but this hasn’t cured the problem totally, the CDs now spins but the display still shows DISC. i.e. when I close the CD drawer or press ‘play’ etc, the CD spins and the display flashes DISC but then the display returns to a constant DISC, the disc stops spinning and the CD has still not been recognised.
I'd be really grateful if somebody can point me in the right direction.
Many thanks.

[singa]

Hi,
Since you have replaced the laser and still the same ,try changing the flat flexible data cable from the laser.Most probably one of the thin signal line is broken.
edit--- BTW did you remove the shorted pads before installing?

[tubenut]

Do not think there are shorted solder pads and a VAM12....

I have had a dud VAM12 before!!!
Were ESD precautions taken?
Did you push the flex foil "home" properly into the connector.
I have even had to trim one flex foil as it was too wide for the connector.

[poynton]

Hi.

Have you gone through the self test routine??

It is in the manual, which I have posted here :-

http://www.yourfilelink.com/get.php?fid=170595

Andy

[dlflclhl]

Wow, thank you all!

Yep, ESD precautions were taken and yep I pushed the foil connector home, well at least I'm pretty sure I did as I did it twice. I'll see if I can check the foil connector for any breaks using an AVO meter.
Nope, I haven't gone through the self check routine but now I've got the service manual I will, so many, many thanks Andy for posting it.
I'll post my findings as soon as I've done them.
Cheers

[dlflclhl]

Hi Folks,

Right, checked the foil connector and it's pushed home fine, also checked it for any breaks using an AVO meter and it's all okay.
Then went into the self service routine:

- At P00 the laser sled moved in and out when pressing >> or <<.

- At P01 an audible clicking is heard about every second. Note this is a mechanical clicking from the player, not one heard through the speakers. If I rotate the CD gently by hand, nothing is audible through the speakers.

- At P02 the CD rotates in a clockwise direction.

- At P03 the CD continues to rotate in a clockwise direction.

If at any time I press PLAY the display flashes "disc" and then "Err 10" is displayed, i.e. RADIAL error.

So, any ideas what "RADIAL error" is and how to fix it?

Cheers.

[Netlist]

Sorry guys, schematic does not match my service database.
Anyway, it says (translated)

Clock signal at pin 22 of demod component is normally 6Mhz.
When the fault occurs its only about 4.35Mhz.
Pin 18 is 9V instead of 5V.
C2501( which is not on the provided schematic) is short which results in pin 16 being too positive.

If you can find the demod component(?) this might help.

/Hugo

[poynton]

Originally posted by dlflclhl


- At P00 the laser sled moved in and out when pressing >> or <<.

- At P01 an audible clicking is heard about every second. Note this is a mechanical clicking from the player, not one heard through the speakers. If I rotate the CD gently by hand, nothing is audible through the speakers.

- At P02 the CD rotates in a clockwise direction.

- At P03 the CD continues to rotate in a clockwise direction.

If at any time I press PLAY the display flashes "disc" and then "Err 10" is displayed, i.e. RADIAL error.

So, any ideas what "RADIAL error" is and how to fix it?

Cheers.

Can you see the laser trying to focus - ie goes up and down?
In a darkened room, can you see the laser light up when you power up the cdp?

Andy

[Guido Tent]

Originally posted by poynton


In a darkened room, can you see the laser light up when you power up the cdp?

Andy

a mobile phone containing a camera helps in looking at the infrared laser

Also helpful: http://www.repairfaq.org/sam/cdfaq.htm

radial error indicates that the sledge or lens cannot move in the radial direction. When starting a disc it always moves to the center where the TOC is located on thge disc. Does the sledge move ?

best

[dlflclhl]

Originally posted by poynton


Can you see the laser trying to focus - ie goes up and down?
In a darkened room, can you see the laser light up when you power up the cdp?

Andy

Originally posted by Guido Tent


a mobile phone containing a camera helps in looking at the infrared laser

Also helpful: http://www.repairfaq.org/sam/cdfaq.htm

radial error indicates that the sledge or lens cannot move in the radial direction. When starting a disc it always moves to the center where the TOC is located on thge disc. Does the sledge move ?

best

Hi

Yep, when there's no CD in the tray the laser goes up and down trying to focus when I close the tray or press PLAY, unfortunately I can't check that when a CD's in the tray as I can't see the laser.
As for actually seeing the laser beam, nope I can't see a thing, but then again would I be able to as I understood IR to be invisible to the naked eye? Unfortunately I don't have a mobile phone with a camera.

The laser sled doesn't move when a CD is inserted, but the laser sled always parks itself at the centre so I'm not sure whether it would move anyway.

What I have noticed though, on doing the self test routine again, at Mode 3 (Display P03), the sled doesn't move when pressing << or >>, something it should do according to the service manual.

Cheers.