ROWE MMI problems

Ok ... it takes credits ok . The buttons make a selection and the front contacts spin and push out the pin . Then nothing else happens .
Holding the solenoid at the bottom of the mech shut will make the rear set of spinning things go and let the plastic shoe hit the pin and then it will grip a record & load it and the arm goes on the record and spins without sound .

At this point it will not reject no matter what button i push . The scan setting on the service switch does nothing no matter where the mech is . I have removed the mech and tested every micro switch and they are all good . Also checked everything for dry oil & the usuall . The whole maching is super clean .

Customer has owned this for 30 years and it always worked till it acted up . He said it started breaking records at first

HI, Ken, first of all you need a manual, I If you have not got one, Your jukebox sounds by what you are saying has several issues. amongst other things. but like I say best get the manual and read it several times, to get the correct terminology for the parts you are describing on the mech, . The spinning thing behind the search unit which you refer to as the front contacts is the stopping switch assembly. The breaking of records is a whole other matter which will have to be looked at once you get the juke selecting records. if you have been tinkering with the micro switches on the cam they need to be adjusted correctly .

Ken, I strongly recommend that you get a manual for any of the MM-1-2-3-4 models in that the mechs and wiring harness are nearly identical.

The amp in MM-1 is different than anything before or after it.

Here are the output schematics: http://www.verntisdale.com/AMIschem.htm

Here are the preamp:

http://s1192.photobucket.com/user/Rob-N ... sort=2&o=8
http://s1192.photobucket.com/user/Rob-N ... sort=2&o=9
http://s1192.photobucket.com/user/Rob-N ... ort=2&o=10

if you remove the mute plug and the amp power is plugged-in there should be sound from the pickup when playing. If not, there may be broken wires between the pickup and amp (check for several hundred ohms on each channel across the RCA plugs). Or, more likely, the amp is blown. There are additional fuses under the chassis pan. If these are blown it means the output transistors have shorted.

This was a troublesome and stupid design that requires a few mods to get it reliable and decent sounding. You might want to send it out to someone who has dealt with this model.

Rob/NYC

I simply tested the switches with an ohm meter without removing them . The amp works fine . Someone mentioned a breaker switch on the power supply . This supply only has fuses . The power supply is working . I removed the keyboard to inspect and check the usual sets of contacts . I removed the amp to check same . I re-removed the mech for a second look at everything and found nothing unusual or messed with . I checked contact plug blocks for loose or pushed back pins . I spent alot of time checking stuff . I took off the rotating pin assembly and tested switches , coils , relays for broken wires or dirty contacts .
The owner admited to testing stuff himself before he brought it to me . I think he may have done stuff that would be real hard to find now ?

i have repaired or restored over 30 jukeboxes but mostly older stuff . This one throws me off . Probably need a working one to swap parts .

Hi Ken,

Going back to the customers original issue of breaking records, this is usually down to a plastic or fibre stop that is riveted onto the Guide & Belt Support Assembly (303-05169) if this stop is broken it allows the gripper bow to drop down past its normal position and the gripper bow clips the edge of the records. Make a new stop and that issue is resolved.

Regards
Alan

Alan Hood
ami-man