Question about Sharp XL-MP130 CD Shelf System

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Cassette Deck doesn't auto reverse

Cassette deck on Sharp Model XL-MP130 does not auto reverse. It only plays one side of the tape and then I must manually turn the tape over to play it. I have checked several tapes on another system and they work fine, so I don't think it's a tape problem. Thanks.

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Re: Cassette Deck doesn't auto reverse

This is a common problem....with the old days there was a shiny end of tape (EOT) sticker placed on the tape end which was detected as the tape end and caused the electronics to reverse the motor drive to play in the teverse direction.

If consumers alter the length of the tape by cutting and joining they used to cut off the EOT sticker and then the tape wouldnt reverse like in your case.

Now days a hi frequency signal is recorded on the tape and a detector circuit inside sees this signal and reverses the tape for you,

I would suggest that the simplest thing to do is to clean the playback head with a cotton bud and some special head cleaning alcohol.
There jusy may be a build up of magnetic material on the play back head which is stopping the high frequency signal getting through to the detector circuitry.

Different manufacturers do this EOT detection in different ways but the head clean is the first line of attack that you can do yourself.

Please turn off the power before doing this activity and be very careful with the cotton bud that you are not rough and dont push too hard on the recording/play back head.. Be gentle...
The cleaning liquid must be proper head cleaning liquid, so dont try shorth cuts and use just anything to do the cleaning or you may ruin the detector head surface.

The quality of play back sound will also improve from a good clean..

Cheers From YUBEUT

Posted on Nov 24, 2007

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Your unit needs a little TLC. Let me address the likely problems/solutions:

1) Tape deck stuck - The most common problem here is that the belt has gotten slippery. This has prevented the mechanism from resetting to a known position and that is what prevents the door from opening. Hopefully when you pried it open, nothing bot broken.

2) Both tape drives run from the same motor and use different belts. The same applies to the second deck as the first. The belts are sliping and need to be replaced.

3) The CD lens is probably dirty and needs to be cleaned. The fact that the CD stops and an attempt is made to play it suggests that the optics are working enough to detect the disc. Clean the lens using a cotton swab and alcohol and that should resoplve the CD problem.

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Sounds like a poor "connection" between the cassette head and the head in the adaptor.

This could be caused by either head being dirty, or the tape head may be mis-alligned.

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On pg 18 it says to load a recordable (blank) tape into the B side deck. Easy enough. Next comes the tough to discern part.
In section 2 where it mentions "For Manual Recording and Sound Mixing:" Select the desired source to record or mix. In your case that would be the A deck. Here is where they needed to take a little time and explain that tape-to-tape recording is one of those possibilities. Notice that you'll need to place the B deck in standby. Then select the REC PAUSE/START to start the B deck & then (this is another place where they needed to be more clear) you'll need to simultaneously start (press the play button) the A deck which would be the recording source. In the future just remember that the A deck is the source and the B deck is the destination.

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- Disassemble the player.

(you will need only one, long, phillips head screwdriver $5.00)

[It is a tedious job. (first,study how it is put together) There are 6 screws on the back - three down deep holes, three at the bottom, and two dark colored ones on the side. Once the front covering is off, then you start the process to get at the Cassette deck. You will have to unscrew a ground wire; pull the "tape" connections and one wire bundle snap fitting; and then unscrew the two screws on the back, near where the wires for the speaker connections are placed... then remove the Cassette Deck.]

{I sat in my recliner with the whole thing in my lap as i worked with a foot stool near by to put things as they came apart... and i used a metal salad bowl to through the screws into as i went along.}

- Study the drive mechanism.

- See where the drive pulleys are.

- Use small elastic bands to replace the broken belts.
(small = 1/2 inch diameter ... the size of your little finger, but will stretch out to two inches or so.)

I happened to have these on hand:


- I did this on my JVC PC-XC70BK and it worked.

- Both the player-side and record-side decks had broken belts.

[The fast forward and rewind wouldn't work on either side.]

(Per each deck: one drives play, one belt drives both Rewind & Forward)

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- My guess is the laser pick up is dirty (because they all face upward and oily film builds up on them).

- First try a disk cleaner with a brush on the underside of it.

- If that doesn't work, then (after taking off the front plastic cover plate {see above}), you can see where the upward pointing laser lens is. If you can, use Rubbing Alcohol on the end of a Q-Tip to probe into the area and thoroughly clean its surface. Then wipe it clean with a dry Q-Tip.

- If you can't get at the laser lens, then Disassemble the Unite.
[There is another ground wire that must be unscrewed from the deck assembly. And there is the issue of the tape connections leading to the top part of the unit ... they will flop around and fall out of their place once you have pulled them from the connectors ... with a bit of observation you can get them back correctly.]

- Unscrew two screws at the back ... then pull out the tray assembly.
.... then go as far in the disassembly as you need to so you can swab the laser lens with the Rubbing Alcohol.

- Re-assemble. I had one screw left over.

... ROTFL but i know where it goes and i don't care to get it there... so to hell with it, right?

Everything works fine now. Not bad for a 17 year old piece of equipment that has a Ten CD storage tray... that you can't get anymore... right?

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