Can anyone help me with this one?

Picked up a bally old chicago not working. Very clean with not many plays on it. However motor wont turn at start up.

Heres what I did so far and whats happening.

Disassembled and cleaned/ lubbed steppers,
Replaced fuse blocks and new fuses
Did a basic check on relays for loose wires, misadjusted contact gaps, and dirty contacts ( very possible I missed a some, always do)
Have correct power outputs at transformer
Cleaned jones plugs

There is no left flipper button switch

Credits are on the machine. I have schematic and start up guide.

When powered on GI lights come on, coin lockout coil locks and lock relay powers on and the game over relay is tripped
When credit button is pressed the coin, credit and reset relays lock as they should but thats it.

I can manually move the score motor all the way around back to home position.

switch 1D on score motor is the index switch correct? It does not move the motor. I tried cleaning it but nothing. I did see a small blue spark once but no movement.

I'm looking at e-10 thru e-12 on the schematic (dont know how to post it) This appears to be the right area I think (start up is complicated on these schematic as a beginner)

2b on the start up sequence says. The coin relay will energize the reset relay thru a game over relay switch, operate the score motor and then thru normally open 2 and 11...

I have read clays guide and pin wiki alot, but grasping start up is overwhelming.

Thanks

Thanks

I just tried the right hand schematic relays nothing happens. Also jumped yellow common at transformer output to red/ yellow lug on motor. Got small spark no movement. By the way the game over is still tripped. I think this is correct as it latches later.

Whats next?

OK getting somewhere now! Started poking around the motor a bit. There is a magnetic motor wheel thing that pulls in I manually pushed it in and then tried jumpering it and it is working. Must have been dust or dirt holding it in when giving it power.

Credit button now works and deducting credit from wheel. But no ball kick out yet. I will work on that before I ask for help.

Thanks guys your the best!

Ok, Scores reset to zero, ball kicks out. All score switches are as they should be at zero. Motor continues to run. I checked all relays above associated with score motor, none are locked on. All playfield switches appear open, coin door switches are ok. The drop target bank keeps trying to reset but targets are up and switches all ok.
The weird thing is the under playfield bonus stepper keeps stepping up and down between zero position and one.

Also although non are staying locked on, outhole relay and out bonus score relay are toggling with score motor

Ok, Checked coin door switches they are not mangled and both add credits and not stuck closed. There is no 3rd coin switch relay only 2nd.
I checked all associated switches on the relays, no solder bombs or shorts, everyting appears to be making and breaking as they should.
The reset relay triggers at start up then lets go, the motor continues running. The outhole relay and out bonus score relay are switching on and off with the motor rotation. As this happens the outhole solenoid and drop target reset solenoid fire as they are connected to outhole relay and score motor.
The bonus stepper continuisly steps up to position one (O in old chicago) and then reset solenoid fires back down to zero. I'm looking at f21 -f23 on the schematic. I cleaned and gapped the contacts on the bonus unit switches. I cleaned the outhole playfield switch and tried it open or closed same thing.

Thanks again for helping,

If I put a strip of paper between the make break switch on the bonus stepper with the green/yellow and red/black wire everything seems ok. Score motor stops and I can play.

Side question is the alternatiing relay a hold relay.
thanks

Thanks Mark, That paper is stopping it from making contact when it the stepper goes to position 1 from zero. So I can trigger scores and bonuses but need to pull the paper out for it to countdown bonus which it does. But then the motor continues running until I put paper back in. AHHHHH!

I think I am way over thinking it and staring at the schematics to much. Need to take a break and look tomorrow

Got it. I must have bent the stiffening blade in the out hole on playfield creating short. Very easy to do when removing playfield from cab. I have to keep reminding myself to check the obvious stuff first before getting crazy.

So how about this one? My 100 point chime will not fire. It is scoring.

Super simple circuit, I have continuity when circuit is closed from switch on 100 pt relay all the way to coil. Reistance at lugs is right on compairing to other 2 chimes which work. Plunger mechanically moves perfect. I tried triggering 100 pts from under playfield to watch and see if plunger moves. Nothing at all. HUH?
Also does the same for 500 pts and 100 single

All three 10, 100 and 1000 pt switches measure .2 when closed. I cleaned them as well. I did notice the schematic calls for cg-29-1600 solenoids. Mine have cc 31-2000

Thanks Mark, I jumped like you said and the solenoid worked . Then I made a 7 foot jumper went to hook it direct to 100 pt relay but tried it first as is and it worked on its own. Like it just needed to be woken up.