T-10
04/2005
General Machine Troubleshooting
ERROR PROBABLE CAUSE CORRECTIVE ACTION
COIN ACCEPTANCE/PAYOUT (Record all errors for reference if Vendo Technical Service is required)
Coin mechanism will not accept coins. No power to control board. Check to make sure the red LED on the control board is fl
ashing red. If
flashing, check MDB harness connections. If connections are good,
replace changer.
Harness from coin mech to board is cut or
disconnected.
Use a meter and check each wire for continuity and ground.
Short in coin mechanism. Replace coin changer/acceptor
.
Acceptor is dirty or other problem may exist (not
tuned).
Clean acceptor or contact your local coin mech dealer.
Defective control board. Replace control board.
No acceptance or rejects a percentage of
good coins.
Coin return lever pressing down on acceptor’s coin
plunger.
Make sure changer is mounted correctly and the coin return lever is in the
proper position.
Acceptor is dirty or foreign matter is in the path. Clean acceptor or contact dealer
.
Coin changer is improperly tuned (if tunable). Contact manufacturer for tuning.
Defective controller board. Replace/test controller
.
Always accepts coins but gives erratic/no
credit.
If NO CREDIT: Defective harness between coin
mech and control board (will have “CC” error).
Check harness for cut wires or wrong/bad connections. Test each wire for
continuity or test to ground. If found to be defective, replace.
If ERRATIC OR NO CREDIT: Acceptor or coin
mech.
Replace coin mech and test.
If NO CREDIT: Defective controller. Replace/test controller.
Changer will not payout coins. Defective harness between coin mech and control
board.
Test vendor’s manual coin payout. If vendor won’t pay out using the Coin
Payout mode or during sales, check harness for cuts, bad continuity or
wrong connections. If defective, replace and test.
Defective coin mech. Replace coin mech and test.
Defective controller board. If coin mech won’t payout coins manually in the Coin Payout mode or
during the Sales Mode and the above two procedures have failed, replace
the control board and test payout both in the Coin Payout mode and during
a sale.
Changer payout buttons are disabled while door is
closed or while in Open-Door Sales Mode.
Enter the Service Mode or access the Coin Payout Mode.
BILL
ACCEPTANCE
Bill Acceptor will not pull bill in. No power to validator. Unplug power. Wait for 10 seconds. Reconnect power and see if bill
acceptor cycles. If not, check acceptor harnessing or replace the bill
acceptor.
Acceptance disabled by coin mech (if present), or
bad harnessing.
Make sure that the coin mech is plugged in (accepts coins) and that the
coin tubes have enough coins to enable bill acceptance.
Coin mech is not operative. Make sure that the changer harnessing is correctly connected and has
continuity
. Repair or replace if necessary.
Replace acceptor and test. If acceptor accepts, bill acceptor was defective.
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