Seeburg LPC-1 Mechanism clamp arm locked and won't scan

Q&A about all types of jukeboxes: Wurlitzer, Seeburg, Rock-Ola, AMI, and more.



Topic author
justin_hess
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Re: Seeburg LPC-1 Mechanism clamp arm locked and won't scan

by justin_hess » Sat Jan 28, 2012 3:33 am

Skip all that ramble. NOT the transformer (looking at the transformer and typing)

To stop mech operate swith twice. Check (including manual credit switch)
In play position. Quiet (both switches)
Off position. Play control assembly noise when manual credit switch to the right.
Scan. Starts the motor. Play control assembly noise when manual credit switch to the right.

Sorry.

Justin


Topic author
justin_hess
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Joined: Sat Jan 21, 2012 6:34 am

Re: Seeburg LPC-1 Mechanism clamp arm locked and won't scan

by justin_hess » Sun Feb 05, 2012 1:14 am

I only get to this a couple days at a time explaining the reason for my delay. Again. Thank you for your help.

The service switch now stops the motor after fixing the short. When the console is powered up there is a slight hum in the latch bar solenoid. When the release button is engaged the hum goes away. Both lights are lit near the coin slot, as in "select any single or select any LP album'. 'Select any single' disappears when release is in.

Record still sits and spins and does not release the record back into the magazine. AND what could I have possibly done to get the needle to play the A side from the runout groove to the start of the record (backwards). Motor is spinning toward the magazine.

Service manual is in the mail.


Ron Rich
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Re: Seeburg LPC-1 Mechanism clamp arm locked and won't scan

by Ron Rich » Sun Feb 05, 2012 1:26 am

Justin,
First items are operating correctly--
Record running backwards indicates either the reversing switch lever is in the R-L position.and/or, the reversing relay is "locked down". Try the following: Power off, and push the reversing switch lever to the right. Then look at the mechanical lock on the reversing relay--lift it slightly--only enough to free the relay armature (spring does not like to be stretched). and it should "pop-up".
Power on--
You should now be able to push the reject button or move the tone arm to the record end and it should trip off, and run "normally"--
Ron Rich


Topic author
justin_hess
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Posts: 15
Joined: Sat Jan 21, 2012 6:34 am

Re: Seeburg LPC-1 Mechanism clamp arm locked and won't scan

by justin_hess » Sun Feb 05, 2012 1:51 am

Thank you ! That is the first time I saw a sign of the tone arm moving on its own. Clamp arm reader the record and back into the magazine. Dropped a quarter in the coin slot and it fell straight to the coin return.

Tried to make a selection and there's no movement or scanning. I'm going to look over the PDF manual I have. If you have want suggestions send them my way ! Exciting.


Ron Rich
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Re: Seeburg LPC-1 Mechanism clamp arm locked and won't scan

by Ron Rich » Sun Feb 05, 2012 1:57 am

Justin,
The coin going into the coin return is a mechanical problem within the "slug rejector" itself. Seeburg did not publish info on the slug rejectors in those days, because the companies that made them did.
Is the "select lamp" lit ? Is the latch bar solenoid energized ? Is the service switch in the "run", or "operate" position ( all the way over to the right) ?
Ron


Topic author
justin_hess
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Joined: Sat Jan 21, 2012 6:34 am

Re: Seeburg LPC-1 Mechanism clamp arm locked and won't scan

by justin_hess » Sun Feb 05, 2012 2:08 am

The select lamp and latch solenoid WERE energized until I made a few selections. That's when I stopped.


Topic author
justin_hess
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Joined: Sat Jan 21, 2012 6:34 am

Re: Seeburg LPC-1 Mechanism clamp arm locked and won't scan

by justin_hess » Sun Feb 05, 2012 2:15 am

Service switch in "run" position.

I was able to get the lamp and latch solenoid energized. After making selection motor will start but sit in the same position from where it returned the last record in the magazine. I have stopped the motor and energized the latch solenoid again.


Topic author
justin_hess
Junior Member
Posts: 15
Joined: Sat Jan 21, 2012 6:34 am

Re: Seeburg LPC-1 Mechanism clamp arm locked and won't scan

by justin_hess » Sun Feb 05, 2012 4:55 am

Here is the progress I've made today.

Motor is off.
I have to manually energize the latch solenoid with the service switch, manually lift the relay switch, and then make a selection. The mech would never scan but pick up the same record and play the B side now. Again, manually lift the relay switch and it would return the record to the magazine. I did this a number of times.

The last time it picked up the record and immediately returned it about 20 times in a row. Over and over with out playing the record. Now it picks it up, returns the record only once and I start the process over.

Looking into the troubleshooting manual again but when you see this if you have any other suggestions I'd appreciate them.

Thanks,
Justin


Ron Rich
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Re: Seeburg LPC-1 Mechanism clamp arm locked and won't scan

by Ron Rich » Sun Feb 05, 2012 8:01 pm

Justin,
You are going to need to read the Service Manual, and use the terms used therein to ask questions--too confusing this way--
Ron Rich


Topic author
justin_hess
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Posts: 15
Joined: Sat Jan 21, 2012 6:34 am

Re: Seeburg LPC-1 Mechanism clamp arm locked and won't scan

by justin_hess » Thu Feb 09, 2012 9:19 pm

To get the mech to scan I had to lift the clutch shifting lever and turn the roller into the scan notch position. Basically followed "Clutch 1" -- Clutch lifting adjustment. Check. Mech scans to the right and "jolts". (I don't have another word for it)
Use the service switch twice to stop the mech. I can then turn the roller to move the mech left back in front of the magazine.

Once I have the mech in front of a record I have to manually lift the realease lever and use the service switch "scan" to get the transfer to pick up the record. The tone arm touches the record then immediately returns it back into the magazine and the mech scans to the right and "jolts" forcing me to use the service switch to shut off the motor and start the process over.

I did the best I could explaining this

?

Justin


Ron Rich
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Posts: 8196
Joined: Sun May 06, 2007 11:31 pm
Location: Millbrae (San Francisco area)CA, USA

Re: Seeburg LPC-1 Mechanism clamp arm locked and won't scan

by Ron Rich » Fri Feb 10, 2012 12:23 am

Justin,
You are wasting your time, my time, and everyone else's time--and worst of all it appears you ARE causing major damage to that mechanism !
Please read the service manual ( and perhaps my "Seeburg Mechanism Guide" would help). Then proceed to post, using terms from the books here--
Ron Rich

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