Flying MoMongga E.1. Error

[Skuutz]

Greetings! I recently acquired a Flying MoMonga and am trying to troubleshoot an E.1. error. I do a reset and set the odds and put the machine in play mode with out issue. I can hear the coin mech engage and the Insert Medals light starts blinking. When i deposit a token the machine starts beeping and the E.1. error displays for about 3 seconds then the beeping stops, the error disappears, and the Insert Medals resumes flashing. I have removed the hopper and cleaned the payout counter sensor. I have rotated the hopper manually and coins eject. Anyone have any suggestions? Thanks

[rockston]

Hi , Welcome to Pachitalk ! What happens if you disconnect the hopper altogether and then turn the machine on?

[Skuutz]

I get an E4 as soon as I power on

[rockston]

I would take the coin mechanism out and clean it and reseat the connections since nothing is happening until you put a coin in it. An empty or jammed hopper will not error out until it's called on to dispense coins. Are you sure you are doing the reset procedure absolutely correctly? Explain the reset procedure you are doing.

[Drunkenclam]

Sounds more like an issue with a token acceptor sensor as it goes wrong when a token is inserted. As above. Remove and clean the sensors in it. They work off infrared. So if dirty. Can cause issues.

[Skuutz]

Thanks for the suggestions. I removed the token acceptance sensor and blew it out with an air duster. I cleaned the pins and connector cables with contact cleaner. The problem persists. To reset I have been powering off, toggling the reset switch on, Powering up, pressing the button on the power supply to advance the odds to 6, pressing down on the spin lever (the odds are then locked in and no longer advance), toggle the reset switch off, (I can hear the coin mech energize). Payout switches to 0, credit to 0, and Insert Medals flashes .

[Drunkenclam]

There are 3 or more sensors in the coin mech. If the machine doesn't see the sensors in the right order. It assumes someone is fiddling with it. If it's ok after you reset, until you put a token in. Then it would suggest one of the sensors is dirty or failed altogether.

[takethecastle57]

[Skuutz]

The coin mech only has a solenoid to disengage the reject and the token sensor. Continuity is good on all leads.

[Drunkenclam]

Sure. But there is more than one token sensor. Minimum would be 2, 3 is standard (depending on age) I think my ToHeart2 has 4 sensors.
You would need to check each sensor output.

[Skuutz]

Olympia.jpgThis is the style of coin mech in the machine.

[Drunkenclam]

Like this one?
https://www.ebay.co.uk/itm/144013057...xoCTHUQAvD_BwE

You can see in the third picture. There are 2 photointerupter sensors next to each other. You need to check the output of these on yours.

I don't know if yours are faulty. But you have to follow the fault finding process. To find or eliminate causes

[Skuutz]

Gotcha! I see now that it is a pair of sensors. Any suggestions on the best way to troubleshoot?

[Drunkenclam]

Its probably 5v logic. So would need the sensor powered up there might be indicator leds on the main board. If not your going to have to use a volt meter to measure the output. Then break the beam with a wooden lolly pop stick or coffee stirre and remeasure the output.

[Skuutz]

Thanks Ian. You nailed it. One sensor has a 5vdc output when the beam is broken and the other side is continuous regardless of state. I appreciate your expertise and patience. Any suggestions on a source for a new one?

[Drunkenclam]

Well next it comes down to your skill level and doing a bit of research.
If your good with a soldering iron. Remove the faulty sensor. Look for any model numbers and do a internet search. Its hard to advise on a generic replacement as they come in 3 and 4 pin mounts. Plus the height of the 2 towers vary as well as the gap between them. But a $5 sensor is a lot cheaper than a replacement token acceptor.

although in this would give you an idea.

https://uk.rs-online.com/web/c/displ...%253Atrue%257D

[Skuutz]

In browsing rs-onlines's choices for slotted optical switches I see that unfortunately they dont have the ROHM 923N. When looking for alternatives I see that there are transistor, phototransistor, photo logic pull up, and buffer open collector with 10K pull up resistor. What should I be choosing?

[Drunkenclam]

is ROHM 923N printed on the original?
as its not listed on ROHMs website.

of course. one other option is replace the whole coin mech

[Skuutz]

19C536F3-64A7-4C9E-B6CE-A386A5163CDB.jpeg99F8073A-F53C-49DD-A00E-50A25E3D416F.jpeg
Those are the only identifiers on them. I haven’t been able to find a complete
coin mech either.

[Drunkenclam]

That's a bit of a bugger. I can't find anything with a number 923N either. So can't see the data sheet knowing the sizes and the pin locations. So you will have to do it by hand. You need to measure the height of the towers. The gap between them. The length and width of the sensor. A picture of the bottom of the board showing where the pins come through and know if the 5v signal is sent or terminated when the beam is broken. Then finally. Double check any sensors found have the same hole pattern.