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Post by mauro on Apr 20, 2018 1:11:22 GMT
Greetings to All,
I finally got myself a Library unit and it is doing the Seeburg thing where it loads the record and immediatey trips when the needle touches the lead in groove.
It has mechanism type 2455M10-L6 which oddly enough doesn't appear in the adjustment section of the manual but the adjustments appear to be similar to the 2455M9-L6. It is equipped with the PA4-L6 preamplifier.
I have rebuilt the preamp and cleaned and adjusted all contacts and lubricated the mech, of course.
When it trips from scan to play there is a strong pulse but when it trips as the needle lands there is no pulse to the trip solenoid but it trips anyway.
I haven't worked on a mech since last summer so I'm a bit rusty.
Any guidance would help tremendously!
Thanks, Mauro
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Post by mauro on Apr 20, 2018 1:23:33 GMT
Forgot to mention, I also confirmed that the end of record trip switch is operational by removing one wire and checking continuity.
With the wire attached it showed some continuity all the time, not sure if that's normal?
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Post by Ron Rich on Apr 20, 2018 2:52:07 GMT
Hi Mauro,
That is the same basic mechanism as used in the B-JL models--trip off circuit is the same--
Switch shows continuity with wire on, unless remaining closed ?? How can that be ?? Is Detent lever returning to "rest position" before needle hits the record ?
Ron Rich
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Post by mauro on Apr 20, 2018 20:14:48 GMT
Hi Ron,
Thanks for responding.
I had a closer look at the mech when cycling and it appears the detent lever is resetting prior to the needle landing.
As I was watching I noticed the roller fell fully into the scan position but did not fall into the play notch. When I applied a bit of pressure it played the record but would not reject.
So I'm not 100% sure but would this indicate the clutch is sticking?
I was hoping not to have to pull it from the cabinet and remove the magazine.
What do you think?
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Post by Ron Rich on Apr 20, 2018 22:53:44 GMT
Hi Mauro,
You probably will need to remove it from the cabinet, but not to remove the record rack --I (almost) never remove it! Do you have any service manual for it, or any of the early 100 select pin-bank models--Do you have my "Seeburg Mechanism Guide" ? The manual should help with the electrical trip-off switch circuit, and the guide with both, the clutch problem, and electrical problem. If you would like to purchase my guide, please contact me off forum at: ronnnrich@yahoo.com If you need a manual--see the list of suppliers in the FAQ's above. Ron Rich
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Post by mauro on Apr 20, 2018 23:56:11 GMT
Ron,
I have both your guides and yes they have helped me many times!
I also have the service manual which I purchased from VG or AJ, can't remember as I had it before I bought the 200LU1.
Guess I'll tackle the clutch this weekend.
Thanks,
Mauro
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Post by Ron Rich on Apr 21, 2018 2:59:22 GMT
Hi Mauro,
I thought you did--now READ it --- lol !!
Ron Rich
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Post by mauro on Apr 21, 2018 14:06:33 GMT
I've read it many times including last night, just don't retain things as well as I used to!🙄
I pulled the mech out of the cabinet and the clutch was free and moving well.
There must be another mechanical part that's gummed up which I don't see yet?
If I apply pressure to the clutch lifting lever the roller will fall partly into the play notch and play but then I have the opposite problem, it will not reject, no way. I hear the mech trip but the roller stays in the play notch and the mech just stays in the play position.
Plan on rereading that section of the guide, yet again, and going through all switch adjustments to make sure.
Sure seems like its mechanical to me.
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Post by Ron Rich on Apr 21, 2018 16:04:47 GMT
Hey, I also suffer from CRS--I wrote that ( with a lot of help, from Tony Miller) 15 years ago ! I refer to it hoping someone will re-fresh my great, but not too long memory ! Ron Rich
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Post by mauro on Apr 21, 2018 17:15:55 GMT
So I guess the oil has soaked in where it was needed as the mech seems to be operating now.
I reread Ron's Mechanism Guide and noticed something I never noticed before, the picture with the worm gear showing the oil hole in the casting behind it. Not sure if it had anything to do with it but after oiling that a couple times and running the mech it started operating correctly.
There are a few more bugs to get out and I'm working through those today but I'm sure I'll be back with more desperate pleas for help! LOL.
Ron, thank you and thanks for writing your guides!!
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Post by Ron Rich on Apr 21, 2018 17:28:28 GMT
Hi Mauro,
Yep--if that cam can't turn when the release lever is flipped up, it sure could be the cause of it not removing the record ! Also, drop some oil on the other end of that cam, behind the "brake" cam, under the stripper plate !
You're welcome--thanks for buying the Guides ! Ron Rich
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