VL 200 write in issue?

[prime]

I notice when making a selection with the keyboard there is a loud click coming from the cancel switch ( cant find the proper name ) it the switch at the right end facing the box, under the rack that stops the carriage after two scans.

[jukenorman]

Did I say that anything in the stepper moved? No! What I said was that the contact on the number stepper that prevents the keyboard selecting (when the number stepper is actually operating) needs to be closed (when the stepper is not operating) and that you should check it. I was also explaining exactly what the contact did and why it is likely to be the problem.

Norman.

[prime]

OK below is the photo of that switch, when the stepper finishes the switch is in a closed position.

[prime]

This is the switch you probably are talking about, sorry for my confusion, it is closed .

[jukenorman]

Well it looks closed, have you checked it's clean and can pass current? I think there is one last throw of the dice here - with everything connected (power off), can you see a ground at the keyboard start switches?  Also another thought, when you make a (failed) selection from the keyboard, does the mech scan (two scans)?

Norman.

[prime]

I get good ground at the white wires as per photo. I will try and select again and see if i get two scans, also this may not help but i will post a photo of the wiring and caps on receiver.

[prime]

I put everything back together, tried the keyboard and after starting scanning it does not stop, i then selected a song with the app, it played but still after scanning does not stop. Maybe the removing of parts has caused the switch to stick. I will pull carriage ahead and access switch. Any test or adjustment i should do to switch. ??  .PS     I cleaned and worked the switch it seems to be ok now, I tried with the switch open and in rest position to use keyboard, no change. I see there is a .1uf 200vlt cap on the switch, i will change it but feel if the switch is working that cap may be ok

[prime]

Changed the cap, replaced the switch. It works as it should. select song from keyboard. carriage starts, scans twice and stops. Just a few questions, I see J5and J6 go to the mech, can they affect selection, the rca if the battery trick worked does that confirm the rca connection to the wire is good???

[prime]

Photos of receiver
postimg.cc/gallery/k91gcCB

[jukenorman]

Obviously not the number stepper switch then! Then you must have a bad connection between the VG credit unit write-in trigger and the keyboard, can't really be anything else. Edit - or maybe losing the write-in voltage into the trigger switch?  This has nothing to with the battery test which deals with read-out and trip (how many times do I have to repeat that?). What you have is a write-in issue and you'll just have to trace the wiring.

Norman.

[prime]

OK if i read this correctly i should focus on where the VG connects to the receiver, it cant be before because i connected both to another box and it worked fine .Im not sure where the trigger switch is but will go through my manual, find it and follow all leads going to it thanks pete Update on P2 (J16) on pin 5 spec shows 25vac ,i get 29vac  on pin 10 spec shows -25vdc  I get -30vdc. I removed and tested all resistors and caps that seem to be in line with wiring from P2 only found one resistor that called for 150k but read 170k, replaced it no change.   

[jukenorman]

"the VG connects to the receiver, it cant be before because i connected both to another box and it worked fine"

Not strictly correct because you will be using a different receiver - unless you have also swapped the receivers?


Norman.

[prime]

Sorry i guess i wasn't clear, what i meant was i connected my VL keyboard to my 161 receiver, i connected the mech plug of the 161 to the VG box, i connected the wire coming out of the VG box also to the 161 receiver. It shows me the keyboard and its wiring to its connector are good, the VG credit unit and wiring is good, my issue is only with my receiver, either where the large jones plug connects for the keyboard or the connection that houses the J16. Sorry for being vague.

[jukenorman]

OK, so I have taken pity on you one last time and I've traced out the circuit!

The write-in voltage goes out to the VG credit unit from TSR receiver socket J16 pin 9 and the triggered return is on pin 8. It then goes through a normally closed contact of (stepper) timing relay No.2 (check that contact) and goes to the keyboard via pin 32 of the Jones socket.


Norman.

[prime]

Thanks , i will follow that later ,im not at the box at the moment. I do appreciate your assistance , i should have done this sooner ,im spending a lot more time on the schematics.