Yamaha cd player spindle problem??
 

Need some help please, please, on a Yamaha CD Player model cdc-60.

Just replaced the laser unit and it detects the CD and the spindle motor
starts up ok. Hit the play button and the unit plays okay for about 15
minutes then starts to slow down, speed generally wanders around and
eventually stops and indicates there is no CD present.

Is this likely to be a motor problem? If not any hints? This unit is not
the best to try and work on as you can't get to anything while the it is
playing

Thanks for any help
TJB

Yamaha cd player spindle problem??
 

TJB 2lazyToGet@one wrote in message
...
Need some help please, please, on a Yamaha CD Player model cdc-60.

Just replaced the laser unit and it detects the CD and the spindle motor
starts up ok. Hit the play button and the unit plays okay for about 15
minutes then starts to slow down, speed generally wanders around and
eventually stops and indicates there is no CD present.

Is this likely to be a motor problem? If not any hints? This unit is not
the best to try and work on as you can't get to anything while the it is
playing

Thanks for any help
TJB

Try electrically disconnecting the motor (cut trace maybe) and running it,
the motor in isolation, from a bench power supply to see if its a bearing
problem.
Only low voltage, 1 to 2volts at most usually


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/

Yamaha cd player spindle problem??
 

"N Cook" wrote in
:

TJB 2lazyToGet@one wrote in message
...
Need some help please, please, on a Yamaha CD Player model cdc-60.

Just replaced the laser unit and it detects the CD and the spindle
motor starts up ok. Hit the play button and the unit plays okay for
about 15 minutes then starts to slow down, speed generally wanders
around and eventually stops and indicates there is no CD present.

Is this likely to be a motor problem? If not any hints? This unit is
not the best to try and work on as you can't get to anything while
the it is playing

Thanks for any help
TJB

Try electrically disconnecting the motor (cut trace maybe) and running
it, the motor in isolation, from a bench power supply to see if its a
bearing problem.
Only low voltage, 1 to 2volts at most usually


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/





I did try running the motor from a low voltage and it ran okay but maybe
I should let it run for 30min or so and see what happens???

TJB

Yamaha cd player spindle problem??
 

TJB wrote:
"N Cook" wrote in
:

TJB 2lazyToGet@one wrote in message
...
Need some help please, please, on a Yamaha CD Player model cdc-60.

Just replaced the laser unit and it detects the CD and the spindle
motor starts up ok. Hit the play button and the unit plays okay for
about 15 minutes then starts to slow down, speed generally wanders
around and eventually stops and indicates there is no CD present.

Is this likely to be a motor problem? If not any hints? This unit is
not the best to try and work on as you can't get to anything while
the it is playing

Thanks for any help
TJB

Try electrically disconnecting the motor (cut trace maybe) and
running it, the motor in isolation, from a bench power supply to
see if its a bearing problem.
Only low voltage, 1 to 2volts at most usually


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/





I did try running the motor from a low voltage and it ran okay but
maybe I should let it run for 30min or so and see what happens???

TJB

They had problems with shorted brushes on those motors...

Mark Z.

Yamaha cd player spindle problem??
 

"Mark D. Zacharias" wrote in
t:

TJB wrote:
"N Cook" wrote in
:

TJB 2lazyToGet@one wrote in message
...
Need some help please, please, on a Yamaha CD Player model cdc-60.

Just replaced the laser unit and it detects the CD and the spindle
motor starts up ok. Hit the play button and the unit plays okay for
about 15 minutes then starts to slow down, speed generally wanders
around and eventually stops and indicates there is no CD present.

Is this likely to be a motor problem? If not any hints? This unit
is not the best to try and work on as you can't get to anything
while the it is playing

Thanks for any help
TJB

Try electrically disconnecting the motor (cut trace maybe) and
running it, the motor in isolation, from a bench power supply to
see if its a bearing problem.
Only low voltage, 1 to 2volts at most usually


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/





I did try running the motor from a low voltage and it ran okay but
maybe I should let it run for 30min or so and see what happens???

TJB

They had problems with shorted brushes on those motors...

Mark Z.




Is the problem I described above a symptom of shorted brushes. I
originally though it may be an overheating problem. Are there any other
faults which could manifest themselves as described?

Is it possible to clean/repair these motors or do you simply just go and
buy another one?

Thanks for the help so far
TJB

Yamaha cd player spindle problem??
 

TJB 2lazyToGet@one wrote in message
...
"Mark D. Zacharias" wrote in
t:

TJB wrote:
"N Cook" wrote in
:

TJB 2lazyToGet@one wrote in message
...
Need some help please, please, on a Yamaha CD Player model cdc-60.

Just replaced the laser unit and it detects the CD and the spindle
motor starts up ok. Hit the play button and the unit plays okay for
about 15 minutes then starts to slow down, speed generally wanders
around and eventually stops and indicates there is no CD present.

Is this likely to be a motor problem? If not any hints? This unit
is not the best to try and work on as you can't get to anything
while the it is playing

Thanks for any help
TJB

Try electrically disconnecting the motor (cut trace maybe) and
running it, the motor in isolation, from a bench power supply to
see if its a bearing problem.
Only low voltage, 1 to 2volts at most usually


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/





I did try running the motor from a low voltage and it ran okay but
maybe I should let it run for 30min or so and see what happens???

TJB

They had problems with shorted brushes on those motors...

Mark Z.




Is the problem I described above a symptom of shorted brushes. I
originally though it may be an overheating problem. Are there any other
faults which could manifest themselves as described?

Is it possible to clean/repair these motors or do you simply just go and
buy another one?

Thanks for the help so far
TJB

The problem is removing the interference fit platter from the spindle
without deforming the platter or if replacing the motor messing up the
internal contact fingers by indirectly pulling at the spindle as well as
original problem.


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/

Yamaha cd player spindle problem??
 

TJB wrote:
"Mark D. Zacharias" wrote in
t:

TJB wrote:
"N Cook" wrote in
:

TJB 2lazyToGet@one wrote in message
...
Need some help please, please, on a Yamaha CD Player model cdc-60.

Just replaced the laser unit and it detects the CD and the spindle
motor starts up ok. Hit the play button and the unit plays okay
for about 15 minutes then starts to slow down, speed generally
wanders around and eventually stops and indicates there is no CD
present.

Is this likely to be a motor problem? If not any hints? This unit
is not the best to try and work on as you can't get to anything
while the it is playing

Thanks for any help
TJB

Try electrically disconnecting the motor (cut trace maybe) and
running it, the motor in isolation, from a bench power supply to
see if its a bearing problem.
Only low voltage, 1 to 2volts at most usually


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/





I did try running the motor from a low voltage and it ran okay but
maybe I should let it run for 30min or so and see what happens???

TJB

They had problems with shorted brushes on those motors...

Mark Z.




Is the problem I described above a symptom of shorted brushes. I
originally though it may be an overheating problem. Are there any
other faults which could manifest themselves as described?

Is it possible to clean/repair these motors or do you simply just go
and buy another one?

Thanks for the help so far
TJB

The motor can be checked with an ohmmeter at a low ohms range setting, while
SLOWLY rotating the motor. It should normally read 10 to 12 ohms or so. The
reading will vary while turning, but should not be short-circuit or open at
any one spot in it's rotation.

It is often possible to clear the short using an aerosol cleaner / lubricant
with a pinpoint applicator, sprayed through the slits at the bottom, aimed
at the brushes, while rotating manually, alternating with blowing it out
with a compressor. It's usually necessary to repeat several times before the
short clears. Blow out the excess cleaner with the compressor. You really
need to understand the construction of small motors so you can "aim" the
cleaner at the brushes.

Mark Z.

Yamaha cd player spindle problem??
 

TJB 2lazyToGet@one writes:

"Mark D. Zacharias" wrote in
t:

TJB wrote:
"N Cook" wrote in
:

TJB 2lazyToGet@one wrote in message
...
Need some help please, please, on a Yamaha CD Player model cdc-60.

Just replaced the laser unit and it detects the CD and the spindle
motor starts up ok. Hit the play button and the unit plays okay for
about 15 minutes then starts to slow down, speed generally wanders
around and eventually stops and indicates there is no CD present.

Is this likely to be a motor problem? If not any hints? This unit
is not the best to try and work on as you can't get to anything
while the it is playing

Thanks for any help
TJB

Try electrically disconnecting the motor (cut trace maybe) and
running it, the motor in isolation, from a bench power supply to
see if its a bearing problem.
Only low voltage, 1 to 2volts at most usually


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/





I did try running the motor from a low voltage and it ran okay but
maybe I should let it run for 30min or so and see what happens???

TJB

They had problems with shorted brushes on those motors...

Mark Z.




Is the problem I described above a symptom of shorted brushes. I
originally though it may be an overheating problem. Are there any other
faults which could manifest themselves as described?

Is it possible to clean/repair these motors or do you simply just go and
buy another one?

See: http://www.repairfaq.org/sam/cdfaq.htm#cdmot

--- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/
Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
+Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
| Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html

Important: Anything sent to the email address in the message header above is
ignored unless my full name AND either lasers or electronics is included in the
subject line. Or, you can contact me via the Feedback Form in the FAQs.

Yamaha cd player spindle problem??
 

"Mark D. Zacharias" wrote in
:

TJB wrote:
"Mark D. Zacharias" wrote in
t:

TJB wrote:
"N Cook" wrote in
:

TJB 2lazyToGet@one wrote in message
...
Need some help please, please, on a Yamaha CD Player model
cdc-60.

Just replaced the laser unit and it detects the CD and the
spindle motor starts up ok. Hit the play button and the unit
plays okay for about 15 minutes then starts to slow down, speed
generally wanders around and eventually stops and indicates there
is no CD present.

Is this likely to be a motor problem? If not any hints? This unit
is not the best to try and work on as you can't get to anything
while the it is playing

Thanks for any help
TJB

Try electrically disconnecting the motor (cut trace maybe) and
running it, the motor in isolation, from a bench power supply to
see if its a bearing problem.
Only low voltage, 1 to 2volts at most usually


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/





I did try running the motor from a low voltage and it ran okay but
maybe I should let it run for 30min or so and see what happens???

TJB

They had problems with shorted brushes on those motors...

Mark Z.




Is the problem I described above a symptom of shorted brushes. I
originally though it may be an overheating problem. Are there any
other faults which could manifest themselves as described?

Is it possible to clean/repair these motors or do you simply just go
and buy another one?

Thanks for the help so far
TJB

The motor can be checked with an ohmmeter at a low ohms range setting,
while SLOWLY rotating the motor. It should normally read 10 to 12 ohms
or so. The reading will vary while turning, but should not be
short-circuit or open at any one spot in it's rotation.

It is often possible to clear the short using an aerosol cleaner /
lubricant with a pinpoint applicator, sprayed through the slits at the
bottom, aimed at the brushes, while rotating manually, alternating
with blowing it out with a compressor. It's usually necessary to
repeat several times before the short clears. Blow out the excess
cleaner with the compressor. You really need to understand the
construction of small motors so you can "aim" the cleaner at the
brushes.

Mark Z.



Thanks, I will try the motor rotation test and see what happens.
Any thing else worth checking??

Thanks
TJB

Yamaha cd player spindle problem??
 

Sam Goldwasser wrote in
:

TJB 2lazyToGet@one writes:

"Mark D. Zacharias" wrote in
t:

TJB wrote:
"N Cook" wrote in
:

TJB 2lazyToGet@one wrote in message
...
Need some help please, please, on a Yamaha CD Player model
cdc-60.

Just replaced the laser unit and it detects the CD and the
spindle motor starts up ok. Hit the play button and the unit
plays okay for about 15 minutes then starts to slow down, speed
generally wanders around and eventually stops and indicates
there is no CD present.

Is this likely to be a motor problem? If not any hints? This
unit is not the best to try and work on as you can't get to
anything while the it is playing

Thanks for any help
TJB

Try electrically disconnecting the motor (cut trace maybe) and
running it, the motor in isolation, from a bench power supply to
see if its a bearing problem.
Only low voltage, 1 to 2volts at most usually


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/





I did try running the motor from a low voltage and it ran okay but
maybe I should let it run for 30min or so and see what happens???

TJB

They had problems with shorted brushes on those motors...

Mark Z.




Is the problem I described above a symptom of shorted brushes. I
originally though it may be an overheating problem. Are there any
other faults which could manifest themselves as described?

Is it possible to clean/repair these motors or do you simply just go
and buy another one?

See: http://www.repairfaq.org/sam/cdfaq.htm#cdmot

--- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/
Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
+Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
| Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html

Important: Anything sent to the email address in the message header
above is ignored unless my full name AND either lasers or electronics
is included in the subject line. Or, you can contact me via the
Feedback Form in the FAQs.

Great repair faq!

Thanks
TJB

Yamaha cd player spindle problem??
 

TJB 2lazyToGet@one wrote in
:

Sam Goldwasser wrote in
:

TJB 2lazyToGet@one writes:

"Mark D. Zacharias" wrote in
t:

TJB wrote:
"N Cook" wrote in
:

TJB 2lazyToGet@one wrote in message
...
Need some help please, please, on a Yamaha CD Player model
cdc-60.

Just replaced the laser unit and it detects the CD and the
spindle motor starts up ok. Hit the play button and the unit
plays okay for about 15 minutes then starts to slow down, speed
generally wanders around and eventually stops and indicates
there is no CD present.

Is this likely to be a motor problem? If not any hints? This
unit is not the best to try and work on as you can't get to
anything while the it is playing

Thanks for any help
TJB

Try electrically disconnecting the motor (cut trace maybe) and
running it, the motor in isolation, from a bench power supply
to see if its a bearing problem.
Only low voltage, 1 to 2volts at most usually


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/





I did try running the motor from a low voltage and it ran okay
but maybe I should let it run for 30min or so and see what
happens???

TJB

They had problems with shorted brushes on those motors...

Mark Z.




Is the problem I described above a symptom of shorted brushes. I
originally though it may be an overheating problem. Are there any
other faults which could manifest themselves as described?

Is it possible to clean/repair these motors or do you simply just go
and buy another one?

See: http://www.repairfaq.org/sam/cdfaq.htm#cdmot

--- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/
Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
+Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
| Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html

Important: Anything sent to the email address in the message header
above is ignored unless my full name AND either lasers or electronics
is included in the subject line. Or, you can contact me via the
Feedback Form in the FAQs.

Great repair faq!

Thanks
TJB


I measured the spindle motor resistance, it varied between 3 and 5 ohms.
Normal??? Doesn't seem to have any slop in the bearing, but I put a
very small drop of machine oil on it anyway.

I also noticed another possible problem with this deck: the clearance
from the bottom of a cd in the holder to a plastic locating pin which
pushes through a slot in the turntable is very very small. Possibly the
spindle platter height is to low? There is a remote chance of a cd
rubbing on this pin as it is playing.

Anyone have a value from the correct platter height? I measured from the
chassis to the very start of the black plastic platter at 8.3mm, oops I
probably should have measured to the flange where a cd would sit.

Anyway can anyone let me know what the platter height measurement should
be : I guess that would be from where a cd sits to the chassis??

Thanks
TJB

Yamaha cd player spindle problem??
 

TJB wrote:
TJB 2lazyToGet@one wrote in
:

Sam Goldwasser wrote in
:

TJB 2lazyToGet@one writes:

"Mark D. Zacharias" wrote in
t:

TJB wrote:
"N Cook" wrote in
:

TJB 2lazyToGet@one wrote in message
...
Need some help please, please, on a Yamaha CD Player model
cdc-60.

Just replaced the laser unit and it detects the CD and the
spindle motor starts up ok. Hit the play button and the unit
plays okay for about 15 minutes then starts to slow down, speed
generally wanders around and eventually stops and indicates
there is no CD present.

Is this likely to be a motor problem? If not any hints? This
unit is not the best to try and work on as you can't get to
anything while the it is playing

Thanks for any help
TJB

Try electrically disconnecting the motor (cut trace maybe) and
running it, the motor in isolation, from a bench power supply
to see if its a bearing problem.
Only low voltage, 1 to 2volts at most usually


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/





I did try running the motor from a low voltage and it ran okay
but maybe I should let it run for 30min or so and see what
happens???

TJB

They had problems with shorted brushes on those motors...

Mark Z.




Is the problem I described above a symptom of shorted brushes. I
originally though it may be an overheating problem. Are there any
other faults which could manifest themselves as described?

Is it possible to clean/repair these motors or do you simply just
go and buy another one?

See: http://www.repairfaq.org/sam/cdfaq.htm#cdmot

--- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/
Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
+Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
| Mirror Sites:
http://www.repairfaq.org/REPAIR/F_mirror.html

Important: Anything sent to the email address in the message header
above is ignored unless my full name AND either lasers or
electronics is included in the subject line. Or, you can contact
me via the Feedback Form in the FAQs.

Great repair faq!

Thanks
TJB


I measured the spindle motor resistance, it varied between 3 and 5
ohms. Normal??? Doesn't seem to have any slop in the bearing, but I
put a very small drop of machine oil on it anyway.

I also noticed another possible problem with this deck: the clearance
from the bottom of a cd in the holder to a plastic locating pin which
pushes through a slot in the turntable is very very small. Possibly
the spindle platter height is to low? There is a remote chance of a cd
rubbing on this pin as it is playing.

Anyone have a value from the correct platter height? I measured from
the chassis to the very start of the black plastic platter at 8.3mm,
oops I probably should have measured to the flange where a cd would
sit.

Anyway can anyone let me know what the platter height measurement
should be : I guess that would be from where a cd sits to the
chassis??

Thanks
TJB

I'm almost certain the 3 to 5 ohms is too low. Spindle height is not
standarized from model to model, but I believe it needs to be about 2 to 3
mm clearance from the pickup lens to the underside of the disc.

Mark Z.

Yamaha cd player spindle problem??
 

That motor is supposed to slow down as the disk gets further done . All
cd players do that .
It takes a pretty free spining motor to run right at such low speeds .
Put a drop of oil at the top bushing .
I have had some luck running the motor isolated like already mentioned
but using 6 or 9 volts to blow the carbon out of it so to speak ... that
may or may not last . New motors are cheap

Yamaha cd player spindle problem??
 

"Mark D. Zacharias" writes:

TJB wrote:
TJB 2lazyToGet@one wrote in
:

Sam Goldwasser wrote in
:

TJB 2lazyToGet@one writes:

"Mark D. Zacharias" wrote in
t:

TJB wrote:
"N Cook" wrote in
:

TJB 2lazyToGet@one wrote in message
...
Need some help please, please, on a Yamaha CD Player model
cdc-60.

Just replaced the laser unit and it detects the CD and the
spindle motor starts up ok. Hit the play button and the unit
plays okay for about 15 minutes then starts to slow down, speed
generally wanders around and eventually stops and indicates
there is no CD present.

Is this likely to be a motor problem? If not any hints? This
unit is not the best to try and work on as you can't get to
anything while the it is playing

Thanks for any help
TJB

Try electrically disconnecting the motor (cut trace maybe) and
running it, the motor in isolation, from a bench power supply
to see if its a bearing problem.
Only low voltage, 1 to 2volts at most usually


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/





I did try running the motor from a low voltage and it ran okay
but maybe I should let it run for 30min or so and see what
happens???

TJB

They had problems with shorted brushes on those motors...

Mark Z.




Is the problem I described above a symptom of shorted brushes. I
originally though it may be an overheating problem. Are there any
other faults which could manifest themselves as described?

Is it possible to clean/repair these motors or do you simply just
go and buy another one?

See: http://www.repairfaq.org/sam/cdfaq.htm#cdmot

--- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/

Great repair faq!

Thanks
TJB


I measured the spindle motor resistance, it varied between 3 and 5
ohms. Normal??? Doesn't seem to have any slop in the bearing, but I
put a very small drop of machine oil on it anyway.

I also noticed another possible problem with this deck: the clearance
from the bottom of a cd in the holder to a plastic locating pin which
pushes through a slot in the turntable is very very small. Possibly
the spindle platter height is to low? There is a remote chance of a cd
rubbing on this pin as it is playing.

Anyone have a value from the correct platter height? I measured from
the chassis to the very start of the black plastic platter at 8.3mm,
oops I probably should have measured to the flange where a cd would
sit.

Anyway can anyone let me know what the platter height measurement
should be : I guess that would be from where a cd sits to the
chassis??

Thanks
TJB

I'm almost certain the 3 to 5 ohms is too low. Spindle height is not
standarized from model to model, but I believe it needs to be about 2 to 3
mm clearance from the pickup lens to the underside of the disc.

Mark Z.

I agree that 3 to 5 ohms sounds low. Try this quick test: Disconnect
the motor from the CD player and run it for a few seconds *only* at
8 or 10 V. This may blow out some of the crud but shouldn't damage
an otherwise healthy motor. Then retest and report back. :)

--- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/
Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
+Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
| Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html

Important: Anything sent to the email address in the message header above is
ignored unless my full name AND either lasers or electronics is included in the
subject line. Or, you can contact me via the Feedback Form in the FAQs.

Yamaha cd player spindle problem??
 

Yamaha cd player spindle problem??
 

Sam Goldwasser wrote in
:

"Mark D. Zacharias" writes:

TJB wrote:
TJB 2lazyToGet@one wrote in
:

Sam Goldwasser wrote in
:

TJB 2lazyToGet@one writes:

"Mark D. Zacharias" wrote in
t:

TJB wrote:
"N Cook" wrote in
:

TJB 2lazyToGet@one wrote in message
...
Need some help please, please, on a Yamaha CD Player model
cdc-60.

Just replaced the laser unit and it detects the CD and the
spindle motor starts up ok. Hit the play button and the unit
plays okay for about 15 minutes then starts to slow down,
speed generally wanders around and eventually stops and
indicates there is no CD present.

Is this likely to be a motor problem? If not any hints? This
unit is not the best to try and work on as you can't get to
anything while the it is playing

Thanks for any help
TJB

Try electrically disconnecting the motor (cut trace maybe)
and running it, the motor in isolation, from a bench power
supply to see if its a bearing problem.
Only low voltage, 1 to 2volts at most usually


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list
on http://home.graffiti.net/diverse:graffiti.net/





I did try running the motor from a low voltage and it ran okay
but maybe I should let it run for 30min or so and see what
happens???

TJB

They had problems with shorted brushes on those motors...

Mark Z.




Is the problem I described above a symptom of shorted brushes. I
originally though it may be an overheating problem. Are there
any other faults which could manifest themselves as described?

Is it possible to clean/repair these motors or do you simply
just go and buy another one?

See: http://www.repairfaq.org/sam/cdfaq.htm#cdmot

--- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/

Great repair faq!

Thanks
TJB


I measured the spindle motor resistance, it varied between 3 and 5
ohms. Normal??? Doesn't seem to have any slop in the bearing, but
I put a very small drop of machine oil on it anyway.

I also noticed another possible problem with this deck: the
clearance from the bottom of a cd in the holder to a plastic
locating pin which pushes through a slot in the turntable is very
very small. Possibly the spindle platter height is to low? There is
a remote chance of a cd rubbing on this pin as it is playing.

Anyone have a value from the correct platter height? I measured
from the chassis to the very start of the black plastic platter at
8.3mm, oops I probably should have measured to the flange where a
cd would sit.

Anyway can anyone let me know what the platter height measurement
should be : I guess that would be from where a cd sits to the
chassis??

Thanks
TJB

I'm almost certain the 3 to 5 ohms is too low. Spindle height is not
standarized from model to model, but I believe it needs to be about 2
to 3 mm clearance from the pickup lens to the underside of the disc.

Mark Z.

I agree that 3 to 5 ohms sounds low. Try this quick test: Disconnect
the motor from the CD player and run it for a few seconds *only* at
8 or 10 V. This may blow out some of the crud but shouldn't damage
an otherwise healthy motor. Then retest and report back. :)

--- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/
Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
+Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
| Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html

Important: Anything sent to the email address in the message header
above is ignored unless my full name AND either lasers or electronics
is included in the subject line. Or, you can contact me via the
Feedback Form in the FAQs.



Pickup lense seems to be around 2mm, its that damn turntable locating
pin (don't know why is has to be sooo big) that seems to close for
comfort.

Tried it for a few secs at a higher voltage; the motor still measures
around 3-5 ohms turning it slowly by hand. maybe I should just change
it. Seems simple enough the platter is just a tight fit and should just
pull straight off.

Thanks

TJB

Yamaha cd player spindle problem??
 

TJB 2lazyToGet@one wrote in
:

Sam Goldwasser wrote in
:

"Mark D. Zacharias" writes:

TJB wrote:
TJB 2lazyToGet@one wrote in
:

Sam Goldwasser wrote in
:

TJB 2lazyToGet@one writes:

"Mark D. Zacharias" wrote in
t:

TJB wrote:
"N Cook" wrote in
:

TJB 2lazyToGet@one wrote in message
...
Need some help please, please, on a Yamaha CD Player model
cdc-60.

Just replaced the laser unit and it detects the CD and the
spindle motor starts up ok. Hit the play button and the
unit plays okay for about 15 minutes then starts to slow
down, speed generally wanders around and eventually stops
and indicates there is no CD present.

Is this likely to be a motor problem? If not any hints?
This unit is not the best to try and work on as you can't
get to anything while the it is playing

Thanks for any help
TJB

Try electrically disconnecting the motor (cut trace maybe)
and running it, the motor in isolation, from a bench power
supply to see if its a bearing problem.
Only low voltage, 1 to 2volts at most usually


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list
on http://home.graffiti.net/diverse:graffiti.net/





I did try running the motor from a low voltage and it ran
okay but maybe I should let it run for 30min or so and see
what happens???

TJB

They had problems with shorted brushes on those motors...

Mark Z.




Is the problem I described above a symptom of shorted brushes.
I originally though it may be an overheating problem. Are there
any other faults which could manifest themselves as described?

Is it possible to clean/repair these motors or do you simply
just go and buy another one?

See: http://www.repairfaq.org/sam/cdfaq.htm#cdmot

--- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/

Great repair faq!

Thanks
TJB


I measured the spindle motor resistance, it varied between 3 and 5
ohms. Normal??? Doesn't seem to have any slop in the bearing, but
I put a very small drop of machine oil on it anyway.

I also noticed another possible problem with this deck: the
clearance from the bottom of a cd in the holder to a plastic
locating pin which pushes through a slot in the turntable is very
very small. Possibly the spindle platter height is to low? There
is a remote chance of a cd rubbing on this pin as it is playing.

Anyone have a value from the correct platter height? I measured
from the chassis to the very start of the black plastic platter at
8.3mm, oops I probably should have measured to the flange where a
cd would sit.

Anyway can anyone let me know what the platter height measurement
should be : I guess that would be from where a cd sits to the
chassis??

Thanks
TJB

I'm almost certain the 3 to 5 ohms is too low. Spindle height is not
standarized from model to model, but I believe it needs to be about
2 to 3 mm clearance from the pickup lens to the underside of the
disc.

Mark Z.

I agree that 3 to 5 ohms sounds low. Try this quick test: Disconnect
the motor from the CD player and run it for a few seconds *only* at
8 or 10 V. This may blow out some of the crud but shouldn't damage
an otherwise healthy motor. Then retest and report back. :)

--- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/
Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
+Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
| Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html

Important: Anything sent to the email address in the message header
above is ignored unless my full name AND either lasers or electronics
is included in the subject line. Or, you can contact me via the
Feedback Form in the FAQs.



Pickup lense seems to be around 2mm, its that damn turntable locating
pin (don't know why is has to be sooo big) that seems to close for
comfort.

Tried it for a few secs at a higher voltage; the motor still measures
around 3-5 ohms turning it slowly by hand. maybe I should just change
it. Seems simple enough the platter is just a tight fit and should
just pull straight off.

Thanks

TJB


Looking at a replacement motor. The original is RF-310T-11400. The only
motor I have found readily available is an RF-310. Is there any
difference between the RF310 and the RF310T ??

Also avalable is a MDN4RA, looks like that is also the same physical
size. Not sure if its suitable as there doesn't seem to be much info on
any of these motors.

Thanks
TJB

Yamaha cd player spindle problem??
 

TJB wrote:
TJB 2lazyToGet@one wrote in
:

Sam Goldwasser wrote in
:

"Mark D. Zacharias" writes:

TJB wrote:
TJB 2lazyToGet@one wrote in
:

Sam Goldwasser wrote in
:

TJB 2lazyToGet@one writes:

"Mark D. Zacharias" wrote in
t:

TJB wrote:
"N Cook" wrote in
:

TJB 2lazyToGet@one wrote in message
...
Need some help please, please, on a Yamaha CD Player model
cdc-60.

Just replaced the laser unit and it detects the CD and the
spindle motor starts up ok. Hit the play button and the
unit plays okay for about 15 minutes then starts to slow
down, speed generally wanders around and eventually stops
and indicates there is no CD present.

Is this likely to be a motor problem? If not any hints?
This unit is not the best to try and work on as you can't
get to anything while the it is playing

Thanks for any help
TJB

Try electrically disconnecting the motor (cut trace maybe)
and running it, the motor in isolation, from a bench power
supply to see if its a bearing problem.
Only low voltage, 1 to 2volts at most usually


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list
on http://home.graffiti.net/diverse:graffiti.net/





I did try running the motor from a low voltage and it ran
okay but maybe I should let it run for 30min or so and see
what happens???

TJB

They had problems with shorted brushes on those motors...

Mark Z.




Is the problem I described above a symptom of shorted brushes.
I originally though it may be an overheating problem. Are there
any other faults which could manifest themselves as described?

Is it possible to clean/repair these motors or do you simply
just go and buy another one?

See: http://www.repairfaq.org/sam/cdfaq.htm#cdmot

--- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/

Great repair faq!

Thanks
TJB


I measured the spindle motor resistance, it varied between 3 and 5
ohms. Normal??? Doesn't seem to have any slop in the bearing, but
I put a very small drop of machine oil on it anyway.

I also noticed another possible problem with this deck: the
clearance from the bottom of a cd in the holder to a plastic
locating pin which pushes through a slot in the turntable is very
very small. Possibly the spindle platter height is to low? There
is a remote chance of a cd rubbing on this pin as it is playing.

Anyone have a value from the correct platter height? I measured
from the chassis to the very start of the black plastic platter at
8.3mm, oops I probably should have measured to the flange where a
cd would sit.

Anyway can anyone let me know what the platter height measurement
should be : I guess that would be from where a cd sits to the
chassis??

Thanks
TJB

I'm almost certain the 3 to 5 ohms is too low. Spindle height is
not standarized from model to model, but I believe it needs to be
about 2 to 3 mm clearance from the pickup lens to the underside of
the disc.

Mark Z.

I agree that 3 to 5 ohms sounds low. Try this quick test:
Disconnect the motor from the CD player and run it for a few
seconds *only* at 8 or 10 V. This may blow out some of the crud
but shouldn't damage an otherwise healthy motor. Then retest and
report back. :)

--- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/
Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
+Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
| Mirror Sites:
http://www.repairfaq.org/REPAIR/F_mirror.html

Important: Anything sent to the email address in the message header
above is ignored unless my full name AND either lasers or
electronics is included in the subject line. Or, you can contact
me via the Feedback Form in the FAQs.



Pickup lense seems to be around 2mm, its that damn turntable locating
pin (don't know why is has to be sooo big) that seems to close for
comfort.

Tried it for a few secs at a higher voltage; the motor still measures
around 3-5 ohms turning it slowly by hand. maybe I should just change
it. Seems simple enough the platter is just a tight fit and should
just pull straight off.

Thanks

TJB


Looking at a replacement motor. The original is RF-310T-11400. The
only motor I have found readily available is an RF-310. Is there any
difference between the RF310 and the RF310T ??

Also avalable is a MDN4RA, looks like that is also the same physical
size. Not sure if its suitable as there doesn't seem to be much info
on any of these motors.

Thanks
TJB

Try to get the exact same motor number. The different model suffixes often
relate to the length of the motor spindle (shaft).

Carefully measure the spindle platter height before you remove it. Also, be
aware that you won't likely be able to get it installed on the new motor
"quite" true, meaning that you will probably have some spindle motor wobble
after the new motor is installed. Shouldn't really be a problem, but I
thought it should be mentioned...


Mark Z.

Yamaha cd player spindle problem??
 

Mark D. Zacharias wrote:
TJB wrote:
TJB 2lazyToGet@one wrote in
:

Sam Goldwasser wrote in
:

"Mark D. Zacharias" writes:

TJB wrote:
TJB 2lazyToGet@one wrote in
:

Sam Goldwasser wrote in
:

TJB 2lazyToGet@one writes:

"Mark D. Zacharias" wrote in
t:

TJB wrote:
"N Cook" wrote in
:

TJB 2lazyToGet@one wrote in message
...
Need some help please, please, on a Yamaha CD Player model
cdc-60.

Just replaced the laser unit and it detects the CD and the
spindle motor starts up ok. Hit the play button and the
unit plays okay for about 15 minutes then starts to slow
down, speed generally wanders around and eventually stops
and indicates there is no CD present.

Is this likely to be a motor problem? If not any hints?
This unit is not the best to try and work on as you can't
get to anything while the it is playing

Thanks for any help
TJB
Try electrically disconnecting the motor (cut trace maybe)
and running it, the motor in isolation, from a bench power
supply to see if its a bearing problem.
Only low voltage, 1 to 2volts at most usually


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list
on http://home.graffiti.net/diverse:graffiti.net/





I did try running the motor from a low voltage and it ran
okay but maybe I should let it run for 30min or so and see
what happens???

TJB
They had problems with shorted brushes on those motors...

Mark Z.



Is the problem I described above a symptom of shorted brushes.
I originally though it may be an overheating problem. Are there
any other faults which could manifest themselves as described?

Is it possible to clean/repair these motors or do you simply
just go and buy another one?
See: http://www.repairfaq.org/sam/cdfaq.htm#cdmot

--- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/
Great repair faq!

Thanks
TJB

I measured the spindle motor resistance, it varied between 3 and 5
ohms. Normal??? Doesn't seem to have any slop in the bearing, but
I put a very small drop of machine oil on it anyway.

I also noticed another possible problem with this deck: the
clearance from the bottom of a cd in the holder to a plastic
locating pin which pushes through a slot in the turntable is very
very small. Possibly the spindle platter height is to low? There
is a remote chance of a cd rubbing on this pin as it is playing.

Anyone have a value from the correct platter height? I measured
from the chassis to the very start of the black plastic platter at
8.3mm, oops I probably should have measured to the flange where a
cd would sit.

Anyway can anyone let me know what the platter height measurement
should be : I guess that would be from where a cd sits to the
chassis??

Thanks
TJB
I'm almost certain the 3 to 5 ohms is too low. Spindle height is
not standarized from model to model, but I believe it needs to be
about 2 to 3 mm clearance from the pickup lens to the underside of
the disc.

Mark Z.
I agree that 3 to 5 ohms sounds low. Try this quick test:
Disconnect the motor from the CD player and run it for a few
seconds *only* at 8 or 10 V. This may blow out some of the crud
but shouldn't damage an otherwise healthy motor. Then retest and
report back. :)

--- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/
Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
+Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
| Mirror Sites:
http://www.repairfaq.org/REPAIR/F_mirror.html

Important: Anything sent to the email address in the message header
above is ignored unless my full name AND either lasers or
electronics is included in the subject line. Or, you can contact
me via the Feedback Form in the FAQs.


Pickup lense seems to be around 2mm, its that damn turntable locating
pin (don't know why is has to be sooo big) that seems to close for
comfort.

Tried it for a few secs at a higher voltage; the motor still measures
around 3-5 ohms turning it slowly by hand. maybe I should just change
it. Seems simple enough the platter is just a tight fit and should
just pull straight off.

Thanks

TJB

Looking at a replacement motor. The original is RF-310T-11400. The
only motor I have found readily available is an RF-310. Is there any
difference between the RF310 and the RF310T ??

Also avalable is a MDN4RA, looks like that is also the same physical
size. Not sure if its suitable as there doesn't seem to be much info
on any of these motors.

Thanks
TJB

Try to get the exact same motor number. The different model suffixes often
relate to the length of the motor spindle (shaft).

Carefully measure the spindle platter height before you remove it. Also, be
aware that you won't likely be able to get it installed on the new motor
"quite" true, meaning that you will probably have some spindle motor wobble
after the new motor is installed. Shouldn't really be a problem, but I
thought it should be mentioned...


Mark Z.


Pioneer cd assemblies have a little 'break off' U shaped turntable
height gauge moulded onto the plastic frame, maybe yours has something
similar

Ron(UK)

--
Lune Valley Audio
Public Address Systems
Hire Sales Maintenance
www.lunevalleyaudio.com

Yamaha cd player spindle problem??
 

"Mark D. Zacharias" wrote in
:



Try to get the exact same motor number. The different model suffixes
often relate to the length of the motor spindle (shaft).

Carefully measure the spindle platter height before you remove it.
Also, be aware that you won't likely be able to get it installed on
the new motor "quite" true, meaning that you will probably have some
spindle motor wobble after the new motor is installed. Shouldn't
really be a problem, but I thought it should be mentioned...


Mark Z.




Mark, this may be a dumb question but I am going to ask anyway. Why
would putting the platter onto a new motor cause any more wobble than
with the current motor??? It has one of those pressed on plastic
platters and assuming I don't bend the spindle.


TJB

Yamaha cd player spindle problem??
 

"Ron(UK)" wrote in
:

Pioneer cd assemblies have a little 'break off' U shaped turntable
height gauge moulded onto the plastic frame, maybe yours has something
similar

Ron(UK)


I'll just measure it with calipers. I was hoping someone would have the
correct measurement from a manual, as I am concerned about the plastic
locating lug height being a problem.

Thanks
TJB

Yamaha cd player spindle problem??
 

TJB wrote:
"Mark D. Zacharias" wrote in
:



Try to get the exact same motor number. The different model suffixes
often relate to the length of the motor spindle (shaft).

Carefully measure the spindle platter height before you remove it.
Also, be aware that you won't likely be able to get it installed on
the new motor "quite" true, meaning that you will probably have some
spindle motor wobble after the new motor is installed. Shouldn't
really be a problem, but I thought it should be mentioned...


Mark Z.




Mark, this may be a dumb question but I am going to ask anyway. Why
would putting the platter onto a new motor cause any more wobble than
with the current motor??? It has one of those pressed on plastic
platters and assuming I don't bend the spindle.


TJB

It's just been my experience. The original was pressed on with a machine.
You and I press it on by hand and it doesn't wind up that the disc will
rotate quite as flat as the original once the job is done. Like I said, it;s
not really a big deal. The focus servo will just have to work a little
harder.

Mark Z.

Yamaha cd player spindle problem??
 

"Mark D. Zacharias" wrote in
t:

TJB wrote:
"Mark D. Zacharias" wrote in
:



Try to get the exact same motor number. The different model suffixes
often relate to the length of the motor spindle (shaft).

Carefully measure the spindle platter height before you remove it.
Also, be aware that you won't likely be able to get it installed on
the new motor "quite" true, meaning that you will probably have some
spindle motor wobble after the new motor is installed. Shouldn't
really be a problem, but I thought it should be mentioned...


Mark Z.




Mark, this may be a dumb question but I am going to ask anyway. Why
would putting the platter onto a new motor cause any more wobble than
with the current motor??? It has one of those pressed on plastic
platters and assuming I don't bend the spindle.


TJB

It's just been my experience. The original was pressed on with a
machine. You and I press it on by hand and it doesn't wind up that the
disc will rotate quite as flat as the original once the job is done.
Like I said, it;s not really a big deal. The focus servo will just
have to work a little harder.

Mark Z.



Thanks Mark. I will order a motor and see what happens

TJB

Yamaha cd player spindle problem??
 

TJB 2lazyToGet@one wrote in
:

"Mark D. Zacharias" wrote in
t:

TJB wrote:
"Mark D. Zacharias" wrote in
:



Try to get the exact same motor number. The different model
suffixes often relate to the length of the motor spindle (shaft).

Carefully measure the spindle platter height before you remove it.
Also, be aware that you won't likely be able to get it installed on
the new motor "quite" true, meaning that you will probably have
some spindle motor wobble after the new motor is installed.
Shouldn't really be a problem, but I thought it should be
mentioned...


Mark Z.




Mark, this may be a dumb question but I am going to ask anyway. Why
would putting the platter onto a new motor cause any more wobble
than with the current motor??? It has one of those pressed on
plastic platters and assuming I don't bend the spindle.


TJB

It's just been my experience. The original was pressed on with a
machine. You and I press it on by hand and it doesn't wind up that
the disc will rotate quite as flat as the original once the job is
done. Like I said, it;s not really a big deal. The focus servo will
just have to work a little harder.

Mark Z.



Thanks Mark. I will order a motor and see what happens

TJB


Just fitted a new motor. Can't tell if it has more wobble or not. I
don't have any way to measure the wobble but from an 'eye ball' point of
view, it doesn't seem to spin all that flat, (orig may have been the
same). but the focus tracks the cd and the unit plays just fine.

Thanks everyone for your help

TJB

Yamaha cd player spindle problem??
 

TJB wrote:
TJB 2lazyToGet@one wrote in
:

"Mark D. Zacharias" wrote in
t:

TJB wrote:
"Mark D. Zacharias" wrote in
:



Try to get the exact same motor number. The different model
suffixes often relate to the length of the motor spindle (shaft).

Carefully measure the spindle platter height before you remove it.
Also, be aware that you won't likely be able to get it installed
on the new motor "quite" true, meaning that you will probably have
some spindle motor wobble after the new motor is installed.
Shouldn't really be a problem, but I thought it should be
mentioned...


Mark Z.




Mark, this may be a dumb question but I am going to ask anyway. Why
would putting the platter onto a new motor cause any more wobble
than with the current motor??? It has one of those pressed on
plastic platters and assuming I don't bend the spindle.


TJB

It's just been my experience. The original was pressed on with a
machine. You and I press it on by hand and it doesn't wind up that
the disc will rotate quite as flat as the original once the job is
done. Like I said, it;s not really a big deal. The focus servo will
just have to work a little harder.

Mark Z.



Thanks Mark. I will order a motor and see what happens

TJB


Just fitted a new motor. Can't tell if it has more wobble or not. I
don't have any way to measure the wobble but from an 'eye ball' point
of view, it doesn't seem to spin all that flat, (orig may have been
the same). but the focus tracks the cd and the unit plays just fine.

Thanks everyone for your help

TJB

Woo-Hoo!

Glad that worked out for you.


Mark Z.

Yamaha cd player spindle problem??
 

"Mark D. Zacharias" wrote in
:

TJB wrote:
TJB 2lazyToGet@one wrote in
:

"Mark D. Zacharias" wrote in
t:

TJB wrote:
"Mark D. Zacharias" wrote in
:



Try to get the exact same motor number. The different model
suffixes often relate to the length of the motor spindle (shaft).

Carefully measure the spindle platter height before you remove
it. Also, be aware that you won't likely be able to get it
installed on the new motor "quite" true, meaning that you will
probably have some spindle motor wobble after the new motor is
installed. Shouldn't really be a problem, but I thought it should
be mentioned...


Mark Z.




Mark, this may be a dumb question but I am going to ask anyway.
Why would putting the platter onto a new motor cause any more
wobble than with the current motor??? It has one of those pressed
on plastic platters and assuming I don't bend the spindle.


TJB

It's just been my experience. The original was pressed on with a
machine. You and I press it on by hand and it doesn't wind up that
the disc will rotate quite as flat as the original once the job is
done. Like I said, it;s not really a big deal. The focus servo will
just have to work a little harder.

Mark Z.



Thanks Mark. I will order a motor and see what happens

TJB


Just fitted a new motor. Can't tell if it has more wobble or not. I
don't have any way to measure the wobble but from an 'eye ball' point
of view, it doesn't seem to spin all that flat, (orig may have been
the same). but the focus tracks the cd and the unit plays just fine.

Thanks everyone for your help

TJB

Woo-Hoo!

Glad that worked out for you.


Mark Z.



Thanks Mark, I still have this uncomfortable feeling about that
turntable locating pin. If the laser assembly springs start to sag any
cd you play will start to rub on this pin; there seems to be just over
1mm clearance. Oh well I will just have to see what eventuates.

Cheers
TJB