Troubleshooting Guide

 General Troubleshooting


What To Check For
Rejecting All Of The Coins
  • Check LED for power-on indication.
  • Check LED for Inhibit condition.
  • Check LED for component fail condition.
  • Verify rotary switch SW2 under cover is in position 0 = RUN.
  • Press pushbutton SW1 under cover to verify gate relay actuates.
  • Verify with HyperTerminal or the Xaminer that the coin you are using is programmed into one of the coin memories, or try to manually program the unit for your specific coin again (note: secured units may require an X-Key or Coin Selector to enable manual programming of coins).
Rejecting Too Many Coins
  • Verify that power wires are not holding coin chute partly open.
  • Verify that gate relay wires are not holding coin chute partly open.
  • Verify that the coin chute is reasonably clean.
  • Verify that thickness and diameter settings are correct.
  • If specific coins are always accepted and other specific coins are always rejected you may actually have two different sets of coins that look alike. This is not uncommon with multiple deliveries of tokens, and is (for example) a real problem with Canadian currency. Program each coin variant into a separate coin memory.
  • Verify that the gate relay rake is not bent and clears coin chute when retracted. Use a small screwdriver to hold the rake arm to magnet coil. Check end position of the rake in the coin chute.
Accepting Coins It Shouldn't
  • It may be programmed for those other coins. Erase all of Coin Memory and reprogram the desired coins, or use HyperTerminal or the Xaminer to determine which Coin Memories to erase.
  • If the bad coin is very similar to your desired coin, program the bad coin as an Unwanted Coin.
Steeling Coins - No Credit Internal Credit Optics: The Xeptor sends the Credit Pulse directly to the machine. Assuming the Xeptor really did accept the coin, it may be that the Credit Pulse is too long or too short for the particular machine... not all machines are compatible here, so swapping of Xeptors between machine types can be a problem here. It is also wise to check the wiring harness for possible wire breaks. If another Xeptor performs well, then either there is a Credit Pulse length problem, or its driver transistor had died.

External Credit Optics: The Xeptor sends the Sense Pulse to the machine's credit optics to enable them for a short period of time to detect accepted coins. Assuming the Xeptor really did accept the coin, a Sense Pulse will have been generated. There are three possible causes for the Xeptor not generating a Sense pulse and the machine stealing the coin. 1) If a wire is broken of the transistor driver is dead, there may be no Sense Pulse for the external Credit Optics to receive and the machine may ignore the coin rather than produce a coin-in-error, thus steeling the coin. If this is the case, it will happen a lot, or always, depending on if the problem is intermittent or permanent. 2) It is possible on an X-10 or X-22 that if the coin is a fairly large coin and the gate relay spring is not tight enough, a coin that should be rejected could smack the closed gate in such a way as to bounce it open just long enough to slip past it. You can test for this possibility by turning off the power to the Xeptor and seeing if any coins still go down the accept path. If this is the case, the spring tension is probably too low. Factory calibration of the spring tension may have been changed by inadvertent bending by rough handling of the Xeptor. This problem can usually be fixed by bending the tab holding the spring so as to further stretch the spring. 3) There could be a problem with the machine's credit optics causing them to not give proper credit. You can determine using HyperTerminal or the Xaminer if the Xeptor has intended to accept the coin or reject the coin, and if it was intentionally accepted but the machine did not give credit, the machine's credit optics should be checked.

Fast Fed Coin Stolen: If coins fall through the Xeptor with a gap smaller than .25" between them at the gate relay (note: at 10 coins per second there is generally 1.5" between coins, but non-uniformity in fast coin feeding and coin bouncing can cause them to be closer) it is possible that if the trailing coin is to be rejected, it will be impossible to get the angled gate relay rake between them, and thus the bad coin will flow through without having generated a Sense Pulse for the external Credit Optics. This situation will generate a Tilt output for the Xeptor if it has built-in Credit Optics and assuming the machine is responsive to this signal.

Coins Hang In Gate Relay The gate relay remains open for only a limited time after the coin acceptance decision has been made, but long enough for the coin to have traveled well past the bottom of the coin acceptor. There are only two reasons for a coin to be caught in the gate relay.
1.) If the coin hit some obstacle at the exit of the coin chute and stopped momentarily. This includes problems of alignment between the coin acceptor and the exit chute at the front and rear face of the coin chute, allowing an edge of a coin to catch, or the possibility that the coin has hit the center divider between the accept and reject paths.
2.) If a closely trailing coin is to be rejected, but it is so close that the best the gate relay can do is to close on the coin. For most all coins, the momentum of the coin causes it to escape the grip of the rake on the coin face and pass through. For very light weight coins, the coin may actually stop and be held by the gate relay rake.
Cracked/Broken Plastic Parts The transparent plastic portions of Xeptors is made from Lexan (polycarbonate), which is well known for its tough characteristics. Under normal circumstances, Lexan is not brittle, will not crack or shatter, but may be bent or torn. The coin chute side rails normally will withstand millions of impacts from even the heavy $1 size casino tokens without a problem. However, Lexan is susceptible to chemical attack which can make it brittle and crack and break in places. For example, many glass and surface cleaners contain ammonia, which is probably the most likely of chemicals to come in contact with the Xeptor housing. See note below.


 Troubleshooting With The LED Indicator

Troubleshooting Normal Run Operation SW2 = 0

LED Color

What To Check For

Black - Off

There is no power to the Xeptor.
         Check cable and connectors are not at fault.
         Check controls that may switch power off when access door is open.

Solid Green,
Or Green With Very Short Red Flashes

Green LED indicates the Xeptor knows of no problem it can detect.
The short red flashes indicate it is Secured from hand programming.
         Verify the unit is programmed for the specific coin having a problem.
         Not all coins that look alike are alike, check to see if that coin is different.
         Check for alignment problems on entry and both exits of the Xeptor.
         Check for reasonable diameter and thickness settings for the specific coin.
         Pres button SW1 and verify accept gate relay functionality. Check its connector.
         Connect to HyperTerminal or Xaminer, check System Report and coin Auto-Report.

Red / Green

The Xeptor thinks that some critical sensor function has a problem.
         Check both ends of the flat cable on the back side of the unit.
         Check the coin chute to verify nothing is blocking the diameter or credit optics.
         Use the Field Test Procedure to check out individual functions.
         Connect to HyperTerminal or Xaminer, check System Report and coin Auto-Report.

Yellow Flash

The Xeptor is inhibited.
         Some machines inhibit the acceptor when the door is open.
         Check the INHIBIT input signal.
         Connect to HyperTerminal; check SysConfig for proper Inhibit setting.
         Connect to HyperTerminal, check TiltTime for > C0 Hex which latches self inhibit.

Red - Solid

The rotary switch SW2 is probably not in "Run" position 0, but in position 1 to 6.


Troubleshooting During Coin Learn Operation SW2 = 1 to 6

LED Color

What To Check For

Red Or Orange

Normal color at the start of, or during, the Coin Learn Procedure.
For X-20, X-22, and X-60 with V4.0 firmware:
         Red indicates there is no prior coin in the selected Coin Memory location.
         Orange indicates there is a prior coin signature in the selected Coin Memory.

Yellow Flash

This indicates that the Xeptor has been "Secured" from manual coin programming unless an "Enabled" X-Key or Coin Selector is connected to the serial port. In SW2 position 0 (Run) you should also see a short red flash in the otherwise green LED because it is Secured.

Green Flash

This normally occurs as you drop each of the 6 sample coins during the learn procedure after initiating it by pressing SW1 one or more times.

Red / Green

This normally occurs for about two seconds at the end of dropping the 6th sample coin to indicate that all sample coins have been registered and the data saved.


 Troubleshooting Fractured Plastic

WARNING: Do not use cleaners containing ammonia. It will chemically attack the Lexan housing material causing it to become brittle and possibly break in areas of high stress or impact such as the coin chute rails.

Other chemicals that attack Lexan include: Acetone, Toluene, MEK, DMSO and Gasoline. (see full list)


 Troubleshooting Alignment Issues

Proper Alignment Is Critical
Failure to have proper mechanical alignment may lead to either coin jams or sporadic machine tilt/error signals. IDX Xeptors always position coins in the center of the coin chute (as opposed to edge referenced methods used in simple comparators) in order to achieve precision diameter measurement and separately measure edge and center metal alloys on bimetal coins. This difference in coin positioning requirements can sometimes be the source of an alignment problem when converting from a simple comparator to an IDX Xeptor. One way to ensure proper alignment is to order the machines form the OEM with IDX Xeptors already installed. For retrofits, one may sometimes correct small alignment by repositioning or bending the existing bracket. In most cases, the machine OEMs actually have more than one bracket style and coin-head style in order accommodate all of the minor mechanical variations in coin acceptors available in the market. Some of them are listed below for your reference.

Verify Alignment With Power Off
One of the best ways to verify proper alignment is to deposit coins into the machine with no power to the coin acceptor so you can observe how the coins flow through the entry and exit of the coin acceptor. You must make sure that the coin may easily enter and exit the coin acceptor with no possibility of catching a coin edge due to front/back alignment problems, and with no significant right/left jog at entry or exit. To verify there is not problem in the accept path, you can use a wad of paper to hold the accept gate open.  

The Right Bracket And Coin-Head May Help
Older retrofit machines sometimes have coin acceptor brackets and coin-heads that do not have the proper precision of alignment required for newer precision coin acceptors. Our expert field sales staff can help you with identification of bracket part numbers available from slot machine manufacturers for update retrofits that eliminate mechanical alignment problems.