Need Advice - AIWA Cassette Deck

[E Jones]

I have an AIWA bookshelf system, XR-MD100, with a cassette deck problem.

The machine is not detecting tape motion, therefore it "thinks" it is always
at the end of the cassette.

Symptoms:

Tape plays for a few seconds (tape counter does NOT advance.. stays at
0000).
- auto reverse -
Tape plays for a few seconds (tape counter still frozen at 0000)
Mechanism shuts off.

Trying to FF or RWD, mechanism engages, then immediately goes to STOP, as if
end-of-tape has been reached.

Suggestions? How is tape motion generally sensed by these things?

Thanks.

- ESJ

 

[Sofie]

E Jones:
Maybe during playback the Take Up reel is not turning due to a worn or
glazed tire, faulty lubrication, slipping belt??
The motion sensor usually consists a belt that is driven off of the TU
reel..... it will turn a mechanical motion sensor, hall effect electrical
motion sensor and usually the tape counter. If the belt is slipping or the
mechanism is sluggish this can cause the symptom you described.
--
Best Regards,
Daniel Sofie
Electronics Supply & Repair
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"E Jones" <earl_jonesx@usax.net> wrote in message
news:XwzSb.57253$DE.11435@fe2.columbus.rr.com...

I have an AIWA bookshelf system, XR-MD100, with a cassette deck problem.

The machine is not detecting tape motion, therefore it "thinks" it is
always
at the end of the cassette.

Symptoms:

Tape plays for a few seconds (tape counter does NOT advance.. stays at
0000).
- auto reverse -
Tape plays for a few seconds (tape counter still frozen at 0000)
Mechanism shuts off.

Trying to FF or RWD, mechanism engages, then immediately goes to STOP, as
if
end-of-tape has been reached.

Suggestions? How is tape motion generally sensed by these things?

Thanks.

- ESJ

 

[Chris F.]

I once had a VCR with a similiar problem, turned out that a reflective
surface under the takeup wheel (part of the reel motion senson) was coated
with dirt. Cleaning it off solved the problem.



"Sofie" <sofie@olypen.com> wrote in message
news:101lpkfi4keio74@corp.supernews.com...

E Jones:
Maybe during playback the Take Up reel is not turning due to a worn or
glazed tire, faulty lubrication, slipping belt??
The motion sensor usually consists a belt that is driven off of the TU
reel..... it will turn a mechanical motion sensor, hall effect electrical
motion sensor and usually the tape counter. If the belt is slipping or
the
mechanism is sluggish this can cause the symptom you described.
--
Best Regards,
Daniel Sofie
Electronics Supply & Repair
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -


"E Jones" <earl_jonesx@usax.net> wrote in message
news:XwzSb.57253$DE.11435@fe2.columbus.rr.com...
I have an AIWA bookshelf system, XR-MD100, with a cassette deck problem.

The machine is not detecting tape motion, therefore it "thinks" it is
always
at the end of the cassette.

Symptoms:

Tape plays for a few seconds (tape counter does NOT advance.. stays at
0000).
- auto reverse -
Tape plays for a few seconds (tape counter still frozen at 0000)
Mechanism shuts off.

Trying to FF or RWD, mechanism engages, then immediately goes to STOP,
as
if
end-of-tape has been reached.

Suggestions? How is tape motion generally sensed by these things?

Thanks.

- ESJ

 

[Angulos]

AIWA uses some of the Sony techniques and what happens in your case is that
there's a little take up wheel with a rubber tire that normally breaks or
rather, it breaks all the time...I've fixed a few of those using a small
"o-ring" and sanding the outer side for better gripping...It's a lot of work
and I don't know if you have the patience to disassemble the motor to get to
this little wheel. Good luck!