problem with cdm motor

kaulagalvis · 20th January 2007, 06:07 PM

hello<i have problem with my cd philips cd471,when i changed caps and opamps,motor quickly runing when I turn on cd player,and dont
stop.what is a problem?I dont find problem in board, its okey.help me.thank you.

johnm · 20th January 2007, 06:45 PM

You need to re-adjust the mechanism. There should be an adjustment pot or two on the circuit board next to, or attached underneath, the CDM mechanism.

You'll need the service manual to achieve this properly. Perhaps someone else here has the manual you need.

- John

poynton · 20th January 2007, 06:47 PM

Quote:

Originally posted by kaulagalvis
hello<motor quickly runing when I turn on cd player,and dont
stop.

This is a symptom of NO CLOCK.

Recheck all your soldering. Look for bad joints and solder bridges [shorts].
Which caps did you change ??Also did you change any cap values.??

Check voltages at power supply.

Andy

kaulagalvis · 20th January 2007, 07:46 PM

Quote:

Originally posted by johnm
You need to re-adjust the mechanism. There should be an adjustment pot or two on the circuit board next to, or attached underneath, the CDM mechanism.

You'll need the service manual to achieve this properly. Perhaps someone else here has the manual you need.

- John

thanks ,yes pot is on motor board ,I have other board from cdm 4/11,but it can to make most problem?

Quote:

Originally posted by poynton

This is a symptom of NO CLOCK.

Recheck all your soldering. Look for bad joints and solder bridges [shorts].
Which caps did you change ??Also did you change any cap values.??

Check voltages at power supply.

Andy

thank you,but I looked soldering,its okay,I dont find bad joints.i changed almost all caps in similar or little biger values.on motors socket voltage is about 10v,four contacts 1-2 10v and 3-4 10v.what it is NO CLOCK? I dont no to turn pot on cdm board or no,on other board ,position similary.

kaulagalvis · 20th January 2007, 10:35 PM

Recheck all your soldering. Look for bad joints and solder bridges

yes,bad joints,but motor dont runing,it stay and I cant turn it with hand when cd power on.what problem?thanks.

kaulagalvis · 23rd January 2007, 05:56 AM

need service manual for philips cd471 or cdm4/11,I think,this problem is in motor drivers,motors socket has 4 contacts ,in socket is +--+ voltage about 6v,motor get two voltages and stay,no turn ,but it has voltages,one to left,second to right.help me!

Fin · 24th January 2007, 08:29 AM

I agree with the "No Clock" diagnosis.

It means that the master clock signal that controls everything in the CD player has been somehow disrupted and it not being received by the CDM.

kaulagalvis · 24th January 2007, 08:49 PM

thank you,I understand,I have service manual and look for problem,but where to begin? thanks!

kaulagalvis · 2nd February 2007, 09:27 AM

its okey,bad tranzistor in power supply.thanks all for help!!!!

20th January 2007, 06:07 PM	#1
kaulagalvis diyAudio Member Join Date: Apr 2006 Location: vilnius	problem with cdm motor hello<i have problem with my cd philips cd471,when i changed caps and opamps,motor quickly runing when I turn on cd player,and dont stop.what is a problem?I dont find problem in board, its okey.help me.thank you.

24th January 2007, 08:29 AM	#7
Fin diyAudio Member Join Date: Dec 2003 Location: -	I agree with the "No Clock" diagnosis. It means that the master clock signal that controls everything in the CD player has been somehow disrupted and it not being received by the CDM. __________________ Regards Fin

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Help required for using a FDD motor as a turntable motor.	binspaul	Analogue Source	5	13th May 2009 03:59 AM
Lambda motor vs. XBL^2 motor vs. any other motor	Thinkcat	Subwoofers	16	23rd December 2008 06:23 AM
Pink Triangle PT Too motor noise problem	IanAS	Analogue Source	2	27th March 2008 03:32 PM
DIY TT: motor, motor PS, platter speed measurements	dice45	Analogue Source	52	9th May 2006 01:07 PM
WTB TT motor	IZHAKKATZ	Swap Meet	7	9th February 2005 08:25 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

20th January 2007, 06:45 PM	#2
johnm diyAudio Member Join Date: Sep 2003 Location: Hampshire	You need to re-adjust the mechanism. There should be an adjustment pot or two on the circuit board next to, or attached underneath, the CDM mechanism. You'll need the service manual to achieve this properly. Perhaps someone else here has the manual you need. - John

20th January 2007, 10:35 PM	#5
kaulagalvis diyAudio Member Join Date: Apr 2006 Location: vilnius	Recheck all your soldering. Look for bad joints and solder bridges yes,bad joints,but motor dont runing,it stay and I cant turn it with hand when cd power on.what problem?thanks.

23rd January 2007, 05:56 AM	#6
kaulagalvis diyAudio Member Join Date: Apr 2006 Location: vilnius	need service manual for philips cd471 or cdm4/11,I think,this problem is in motor drivers,motors socket has 4 contacts ,in socket is +--+ voltage about 6v,motor get two voltages and stay,no turn ,but it has voltages,one to left,second to right.help me!

24th January 2007, 08:49 PM	#8
kaulagalvis diyAudio Member Join Date: Apr 2006 Location: vilnius	thank you,I understand,I have service manual and look for problem,but where to begin? thanks!

2nd February 2007, 09:27 AM	#9
kaulagalvis diyAudio Member Join Date: Apr 2006 Location: vilnius	its okey,bad tranzistor in power supply.thanks all for help!!!!

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)