Camb. Aud. CD4SE "no Disc" not spinning

Bert72 · 7th December 2005, 08:11 AM

Hi,

I have a Cambridge Audio CD4 Special Edition. Recently it has been occasionally displaying a "No Disc" message and only recognising some discs. Now it will not recognise anything.

I have taken the lid off and had a look. The disc is being picked up and the laser lifts up 6 or 7 times but the disc will not spin.

Any suggestions as to what the problem could be.

Thanks.

JohnW · 8th December 2005, 11:06 AM

Hi Bert72,

Yes it sounds like your Lasers gone (CDM12.1) - the CD4SE is based upon Philips CD7 Digital Servo Chipset - there’s no adjustment, only laser power calibration on the Laser head itself - but from the systems you described - this will not help.

John

sreten · 8th December 2005, 12:09 PM

I had my CD4SE CD drive changed because of persistent skipping.

Cost £50 (I seem to remember) through Richer Sounds.

/sreten.

danb1974 · 10th December 2005, 08:56 PM

Either laser gone for good; initial focus fails so the motor isn't event started, or motor/motor driver problem.

Bert72 · 10th December 2005, 10:35 PM

Thanks for all the help!

is there a way to check to see if the motor works?

Leolabs · 11th December 2005, 04:14 AM

Try to the internal picture of it,see what we can do.

Bert72 · 13th December 2005, 08:08 PM

I am sorry, i do not understand, could you please clarify.

thanks

anatech · 13th December 2005, 08:56 PM

Hi Bert,
Load a disc and give it a spin gently, with your finger. Disc motors generally go before lasers. Could be a flex cable problem as well.

-Chris

Bert72 · 15th December 2005, 02:31 PM

Sorry to sound so stupid, but what exactly should i do? should i take the top off, have it all powered up then spin the disc manually?

Thanks for you help so far!

Fidelity Audio · 15th December 2005, 02:59 PM

Hi

Take the top off

Power up and watch the disc load.

eject the disc and then re insert it, just as the disc loads spin the disc clockwise. If it spins and you hear some hissing from the laser then your motor or motor circuit it faulty.

If there is no noise the laser has gone.

If the disc wont spin the disc plater may have dropped, just lift slightly with a small screw driver.

But it does look like the laser, the new laser comes part of the transport so you get a new motor and load switch.

7th December 2005, 08:11 AM	#1
Bert72 diyAudio Member Join Date: Dec 2005	Camb. Aud. CD4SE "no Disc" not spinning Hi, I have a Cambridge Audio CD4 Special Edition. Recently it has been occasionally displaying a "No Disc" message and only recognising some discs. Now it will not recognise anything. I have taken the lid off and had a look. The disc is being picked up and the laser lifts up 6 or 7 times but the disc will not spin. Any suggestions as to what the problem could be. Thanks.

8th December 2005, 11:06 AM	#2
JohnW diyAudio Member Join Date: Jan 2004 Location: Discovery Bay, Prague, Paris...	Hi Bert72, Yes it sounds like your Lasers gone (CDM12.1) - the CD4SE is based upon Philips CD7 Digital Servo Chipset - there’s no adjustment, only laser power calibration on the Laser head itself - but from the systems you described - this will not help. John __________________ Life shouldn’t be take it too seriously, you will not come out alive anyway…

15th December 2005, 02:59 PM	#10
Fidelity Audio diyAudio Member Join Date: Dec 2005 Location: Doncaster England	Hi Take the top off Power up and watch the disc load. eject the disc and then re insert it, just as the disc loads spin the disc clockwise. If it spins and you hear some hissing from the laser then your motor or motor circuit it faulty. If there is no noise the laser has gone. If the disc wont spin the disc plater may have dropped, just lift slightly with a small screw driver. But it does look like the laser, the new laser comes part of the transport so you get a new motor and load switch. __________________ Fidelity Audio - Home of quality products & upgrades - What HiFi 5 Star Headphone amp » Hifi World 5 Star Pre amp » HiFi Choice 5 Star Group test winner HPA-100

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8th December 2005, 12:09 PM	#3
sreten diyAudio Member Join Date: Nov 2003 Location: Brighton UK	I had my CD4SE CD drive changed because of persistent skipping. Cost £50 (I seem to remember) through Richer Sounds. /sreten.

10th December 2005, 08:56 PM	#4
danb1974 diyAudio Member Join Date: Jul 2005 Location: Timisoara	Either laser gone for good; initial focus fails so the motor isn't event started, or motor/motor driver problem.

10th December 2005, 10:35 PM	#5
Bert72 diyAudio Member Join Date: Dec 2005	Thanks for all the help! is there a way to check to see if the motor works?

11th December 2005, 04:14 AM	#6
Leolabs diyAudio Member Join Date: Dec 2004 Location: Bukit Mertajam	Try to the internal picture of it,see what we can do.

13th December 2005, 08:08 PM	#7
Bert72 diyAudio Member Join Date: Dec 2005	I am sorry, i do not understand, could you please clarify. thanks

13th December 2005, 08:56 PM	#8
anatech diyAudio Moderator Join Date: Jun 2004 Location: Georgetown, On	Hi Bert, Load a disc and give it a spin gently, with your finger. Disc motors generally go before lasers. Could be a flex cable problem as well. -Chris

15th December 2005, 02:31 PM	#9
Bert72 diyAudio Member Join Date: Dec 2005	Sorry to sound so stupid, but what exactly should i do? should i take the top off, have it all powered up then spin the disc manually? Thanks for you help so far!

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