Vendo VUE 30 User Manual page 125

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