MDE-4784D FlexPay™ Encrypting PIN Pad Start-up and Service Manual · December 2011
Page 63
Troubleshooting Communication Issues
Start-up and Service
Both the FlexPay EPP and Auxiliary keypad appear dead (you do not
hear a beep when keys are pressed)
To troubleshoot this problem, proceed as follows:
1
Check the rear of the FlexPay EPP to ensure the Red and Green LEDs are flashing.
2
Unplug the Auxiliary keypad from the rear of the FlexPay EPP and verify if the FlexPay EPP
keys start to beep. If so, replace the Auxiliary keypad. If the keys still do not beep, replace the
FlexPay EPP.
3
Check the LEDs at the rear of the FlexPay EPP. If the Red LED is solid Red, then attempt a
warmstart. If the LED is still solid Red, then replace the FlexPay EPP.
The FlexPay EPP seems to be operating the opposite side of the
dispenser
To troubleshoot this problem, proceed as follows:
1
Check the FlexPay EPP cable connections on the CRIND Logic Board. Verify the FlexPay
EPP cables are connected to P3102 for Side A and P3101 for Side B. If they are not, power
down the dispenser and connect the cables to the correct ports. Upon restoring power, perform
a coldstart.
Note: Ensure that you enable all peripheral devices after purging the memory.
2
Ensure that the CRIND IDs are not programmed backwards.
You do not hear a beep when you press the keys on the FlexPay EPP
(keypad appears dead)
To troubleshoot this problem, proceed as follows:
1
Check if the dispenser is equipped with a beeper and it is plugged in.
2
Verify the transmit and receive LEDs for that keypad on the CRIND Node are flashing.
3
Verify the LEDs on the back of the keypad are flashing.
4
Check the LEDs at the rear of the FlexPay EPP. If the Red LED is solid Red, then attempt a
warmstart. If the LED is still solid Red, then replace the FlexPay EPP.
5
Enter the Diagnostic Mode and perform a Keypad Test to check all keys (refer to
on
). Ensure that the message, “Debit Active” is displayed.
Note: When you are about to perform the Keypad Test in the Diagnostic Mode, a message is
displayed at the bottom of the screen that indicates the Debit status.
6
Replace the keypad, if required.