Use the Nakamichi MB-1S as a single disk player

[ocaukrell]

Ta.
I don't see that the shake would shorten the life by much if at all.
Reason being, it's only the loading tray that gets shaken, and thats only a light weight part.

I have two nak changers that 'do the shake', an MB-4s for home and a MB-9 for car, both are getting on in years and neither show any signs of age/wear.

[anatech]

Hi ocaukrell,
That's good news. I haven't followed any for a long, long time. I'm guessing the disc motors and laser heads have failed long before the stacker mechanism then.

-Chris

[jpfastre]

Okay, use a thicker mechanism belt than stock. They wil stay out longer.

Do you know a reference and a source to get the thicker belt?

Kind regards
JP

[anatech]

Hi JP,
Sorry, I don't off hand. My supplier went out of business years ago. What we did was to get a belt the same circumference, but increased the cross sectional thickness. Most parts jobbers should have an assortment that you can choose from. In my case, we went from an "SBS" (square belt small) size to an "SBM" (square belt medium) size. I don't know if your general suppliers use the same system of describing belts.

-Chris

[jpfastre]

Anatech, do you have info/service manuals for the nak mb-4s ?

I have the combined service manual for the NAK mb-1s, mb2s and mb-3s.
Perhaps the music bank mechanism is identical. ( Mr. Anatech ?)
Eventually I can send it by email.

Kind regards and thank you all your help. I'll try to repair my Mb-1s

[anatech]

Hi JP,
I can try to help you out as much as I can. My pleasure.

-Chris

[singlemania]

Had the same problem myself with the sorting trays constantly jamming. Contacted the UK Nak service agent and ended up spending over £90 on an (alleged) repair. They had it for weeks and in the end claimed it was a software fault. After getting it back and using it for about 5 months the same problem returned. Not wishing to throw more money at it I removed all the trays except for position 1 and that was 3 years ago and, touch wood, I've had no further problems.

[singlemania]

Originally posted by jpfastre


I have the combined service manual for the NAK mb-1s, mb2s and mb-3s.
Perhaps the music bank mechanism is identical. ( Mr. Anatech ?)
Eventually I can send it by email.

Kind regards and thank you all your help. I'll try to repair my Mb-1s

HI JP do you still have the service manual in e mailable form? On reflection I might see if I can replace the belt on my MB2s and put the trays in and see it sorts the problem. Regards Tim

[anatech]

Hi Tim,
Those MB things are the same. The problem normally occurred when a CD was not placed entirely flat in the tray. The software change caused the tray to jog back and forth to shake the CD into the tray. We called it the "shaky - shaky" mod. The CPU was replaced.

I have seen this fault when the CD player was not sitting flat. Also, the belts must be in good condition. Clean the pulleys when you replace the belts. Also check that something has not got "dry" and sticks the mechanism. Lastly, hair. It gets everywhere and you must pull that stuff out. People with cats suffer the most from this.

-Chris

[singlemania]

Originally posted by anatech
Hi Tim,
Those MB things are the same. The problem normally occurred when a CD was not placed entirely flat in the tray. The software change caused the tray to jog back and forth to shake the CD into the tray. We called it the "shaky - shaky" mod. The CPU was replaced.

I have seen this fault when the CD player was not sitting flat. Also, the belts must be in good condition. Clean the pulleys when you replace the belts. Also check that something has not got "dry" and sticks the mechanism. Lastly, hair. It gets everywhere and you must pull that stuff out. People with cats suffer the most from this.

-Chris

Chris

Thanks. The model I have came with the "shaky shaky" mod. I think the service agent didn't have a clue what they were doing as they were really concentrating on the in car entertainment sector. I suspect the problem with mine was a dry mechanism combined with a defective belt. Don't think its hair as i'm bald as a badger
JP is looking to email me the service manual. Will let you know how I get on.