Claw machine "coin switch stuck" error code

JC Arcade

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Claw machine "coin switch stuck" error code

As you've seen in my other threads, I'm trying to get a Treasure Chest crane machine up and running and thanks to Q and Dogcow, I'm pretty damn close. Everything is all hooked up but when I turn it on, I get an error message: 00 on top display, and 88 on the bottom display. This error code according to the manual is "coin switch stuck". But when I check the coin mechs, the switches seem fine. Anything else I should be looking at? The coin door also has a bill acceptor if that matters.
 
my first thought is that you have the coin wire connected to the NC terminal instead of the NO terminal on the switch, check them carefully.
 
Checked that last night and they are connected to the right terminals.
 
Coin switch stuck closed?

Coin switch sluggish? Being held too long? Some machines look at how long the coin switch is closed to determine if "stringing" is being attempted.

Unplug the bill acceptor temporarily to see if the error goes away.
 
Ken, ran through your list...

Coin switch stuck closed? No
Coin switch sluggish? No
Being held too long? No
Unplug the bill acceptor temporarily to see if the error goes away. No change

I took some pics to see if maybe you would notice something with the wiring or connections. One thing about the harness connections is that there are two plugs, one 2 pin and one 6 pin that don't connect to anything. I've circled them in red in the attached pics. Also, there is an unused connector by the bill acceptor, but the bill acceptor is already plugged in to a similar connector that you can't see (it's behind the connectors for the two coin mechs in the pics).
 

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the unplugged harnesses are normal, to be honest i dont know what they go to, the 3 pin one goes to a prize detector.

does the error clear when u unplug the coin switches?

also does it have a problem when u boot it up, or it only throws the code when u put in a coin because all the ones i have they have a cap across the coin switch, not sure why. maybe because the cpu is too slow to reliably register a credit?
 
It happens at boot up. I'll unplug both coin switches and the bill acceptor and see what happens.
 
Unplugged everything going to the coin door. No change.

I did notice however that I might be having power issues. The bill acceptor gets power, but I just swapped out the missing coin slot bulbs and the new bulbs did not light up. Not sure if that's even remotely related or not. I'm also noticing what looks like resistors at a lot of spots in the harness. At the lockout coils and coin switches for example.
 
power issues can cause all kinds of crazy problems in the united cranes. you need to make sure ur getting exactly 5.25v to the board

heres how u check the voltage. next to bank #2 of dip switches there is an IC , you need
to measure the voltage from the lower left pin to the upper right pin, it should measure 5.25v dc , if it doesnt adjust ur ps until it does, reboot crane,should clear up many issues
 
Unplugged everything going to the coin door. No change.

I did notice however that I might be having power issues. The bill acceptor gets power, but I just swapped out the missing coin slot bulbs and the new bulbs did not light up. Not sure if that's even remotely related or not. I'm also noticing what looks like resistors at a lot of spots in the harness. At the lockout coils and coin switches for example.

EDIT: forget the first part of this post I miss read.

Trace the wires back to the board and then unplug the edge connector and try again. If I remember correctly the coin door wiring goes to one of the edge connectors and it *may* be on backwards as those are not keyed.

Also as stated above these cranes are notorious for the need of correct voltage although my experience is they just reboot over and over when the power supply fails.
 
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Theres how u check the voltage. next to bank #2 of dip switches there is an IC , you need to measure the voltage from the lower left pin to the upper right pin, it should measure 5.25v dc , if it doesnt adjust ur ps until it does, reboot crane,should clear up many issues

Not sure which IC you are referring to next to bank #2, but there's another spot on the board that says "5.25vdc measuring point" and it's next to C22 (see attached - sorry for the low quality, had to resize it to make it larger). I'll make the quantum leap and assume I can/should be using that. Where do I put the leads though? As for 12v, where's the best spot to measure that?

Thanks for everyone's help and patience.
 

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When these machines show an error code, should the error code flash/beep until you shut it off, or does it show the error for a bit, then reset? Mine is resetting.
 
I have seen them do both depending on the error. Were you able to check voltage as was suggested in earlier posts?
Sorry I wasn't able to get you a photo on the LED board in the other thread. I dont have to go to that location very often as things "just stay working" (knock on wood)!

Quentin
 
Hey Q, I haven't checked yet because I'm trying to determine where the best place to test the 5.25v and 12v is.
 
You are on the right track with the test point in your previous picture. Red lead of the multi-meter to that test point. Black lead to the ground (or GND) screw of the power supply. See what you get.

Quentin
 
Test the 5V at the test point on the board. do not worry about the 12v as that is not really important to the operation of the crane. The 12v is for the coin mech lights, lock out coils, DBA and a ticket dispenser if equipped.
 
So I had some time to check voltages tonight. It was running high (~5.35), so I dialed it in to 5.25. but no change. Shut off and turned back on to be sure.

I then pulled out an old power supply I had from a JAMMA cabinet I tore down awhile ago to see if that made a difference. The power supply was running REALLY high (I know, should have turned it down before I started) about 5.7, but I dialed it down to 5.25 quickly. With this PS, one of the coin lamps flicked on and off, and there was a single click sound. I thought the bulb blew, but it would do this each time the machine reset. So I disconnected both coin mechs and just left the bill acceptor attached but the error message was still there.

Any suggestions on where to go with the troubleshooting next?
 
id chase the coin switch wires and clip then a couple inches from the edge connector.(make sure to leave enough room to resplice)

If your error is now gone, your issue is somewhere in the harness.

If not, keep digging.
 
Not sure which IC you are referring to next to bank #2, but there's another spot on the board that says "5.25vdc measuring point" and it's next to C22 (see attached - sorry for the low quality, had to resize it to make it larger). I'll make the quantum leap and assume I can/should be using that. Where do I put the leads though? As for 12v, where's the best spot to measure that?

Thanks for everyone's help and patience.

2r74zus.jpg


test where the arrows are, if its rebooting most likely voltage issue somewhere
prob has nothing to do with the error code tho. i have had better luck with that test point
than the 5.25 test pad, a guy who had a warehouse of like a hundred of these things showed me that trick
 
Thanks Dogcow. So to be clear, black lead on the left arrow in your pic and the red lead to the right arrow? I should have some time to troubleshoot tomorrow. Hopefully I'll get this all nailed down.
 
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