82-70 first cycle not responding

[J-man]

first may i say thank-you for allowing me to be a part of your community. i am very green when it comes to my new career, i work in a house with 16 lanes.

the problem i am having is with 2 of my lanes when i go to cycle (or a ball is thrown down the lane) if it is on the first cycle, the sweep will drop but no spotting, and sweep will remain in guard position until i reverse it or use the switch to cycle it through.

if i press stepper button and tell the chasis it is on the second cycle it works fantastic.

i have tried swapping chasis, swapping boards ( all 5), tried using a single board chasis and still the same problem.

sorry i cant be more specific, i am waiting for a new manual.

thank-you to all for any assistance you can offer.

[8270king]

Re: 82-70 first cycle not responding

Gripper protection switch......between the 8/9 respot cells on the back of the table needs adjusted or the table cable is loose from next to the 4 pin respot cell.

[J-man]

Re: 82-70 first cycle not responding

ill give it a try, thank-you.

[J-man]

Re: 82-70 first cycle not responding

checked wiring harness it is secure, as far as adjustment goes it appears to be in tact. any other ideas?

am i missing something to check?

[BtlrBowl]

Re: 82-70 first cycle not responding

If you use the sweep control cam switches on the front and run the sweep a bit past the guard position does the machine go ahead and cycle?

Do you hear any humming from the motors after the sweep stops at guard?

[Andrew]

Re: 82-70 first cycle not responding

Does the gripper protection switch (GPS) click when you pull the arm back with your finger?

When the sweep is down and waiting, try pulling back the switch arm - does the table descend after a time-delay?

If not, test the switch. Two wires run to it - one comes from the chassis, the other depends on your setup. It might terminate on a ground screw on the GPS bracket itself (like our machines), or it might also run back to the chassis and get grounded in the chassis (like the original design).

Put a multi-meter or continuity tester across the two wires (or the two switch terminals). They should beep/show continuity when the arm is pulled away from the switch.

If there's beeping, but it still doesn't work, then the wiring from the switch back to the chassis is at fault - likely the TAC terminal(s) or the C2A pin(s).

One wire goes goes: GPS (NC), table plug (if you've got one), TAC-SW terminal (in wireway), C2A plug pin 28M, then to the motherboard. The other wire (if it's not grounded at the GPS switch in your setup), goes: table plug (if you've got one), TAC-SW terminal (in wireway), C2A plug pin 412DD, then to ground inside the chassis.

Hope this helps.

Andrew.

[Coors]

Re: 82-70 first cycle not responding

just, bypass the GPS, (at least to test) uncover the wireway. the "TAC" board, is located between the 4 capacitors, on the right hand side. the 4 yellow wires in the lower right of board are the GPS wires. two skinny yellows which go to the table, two thick yellows that go to chassis. put the thick two yellow wires together and see ifit cures the prob.

[J-man]

Re: 82-70 first cycle not responding

bypassed still no response, any other ideas?

[llabahn1]

Re: 82-70 first cycle not responding

Grounded out off-spot switch wires. I had one tonight...same symptoms.

[Andrew]

Re: 82-70 first cycle not responding

Well, if you correctly bypassed the GPS *at the TAC* and still no response, and you've already told us you swapped the chassis, then it must be the wires between the TAC and the C2A plug, or the pins on the C2A plug (pins 28M and 412DD).

Just to double-check (cos this often gets confused when reporting faults) - did you change the whole chassis and everything in it? If you changed the chassis and put the same boards back in then that doesn't count.

llabahn1 -- yes, a grounded OS wire will cause the time-delay to never time down (and hence sweep sticks at 66 with no further action), so in general, checking OS is a good idea. However, in this particular case, J-Man has reported that it works fine on 2nd ball, which it wouldn't if OS was grounded. The difference in the time-delay trigger is that GPS is not necessary on second ball (but OS affects both 1st and 2nd).

Andrew.

[Coors]

Re: 82-70 first cycle not responding

ill double what Andrew said. check the C2a plug to see if any pins got pushed back. or you can get creative and just run a wire jumping the bin switch at the plug (careful tho) to see if that actually is the prob.

for it to run fine on 2nd ball, but no table run on first ball, it has to be the GPS.

[J-man]

Re: 82-70 first cycle not responding

Thank-You all! it was the GPS you guys rock! hope you all can respond to my next post to help me out, i couldn't do it without you. thank-you all again.
Jeremy