MDE-4784D FlexPay™ Encrypting PIN Pad Start-up and Service Manual · December 2011 Page 73
Troubleshooting Flowcharts Start-up and Service
Figure 3-66: Troubleshooting Flowchart - 7
The Advantage
Series/Encore 300
dispenser only
Is the zero
key the only
non working
key?
Does the CRIND
firmware have the
zero (0) key fix?
No
Update the
firmware
BEGIN
Zero key on FlexPay
PIN Pad will not work
No
Yes
Run debit test
Test all keys. Then pull and
replace FlexPay EPP or Aux.
keypad, whichever is causing
the problem.
Complete WRMA Part Card,
attach to bad FlexPay EPP
and replace FlexPay EPP
Retest Debit