T
ROUBLESHOOTING
G
UIDELINES
Blank Display
38
T650T I
NSTALLATION
G
UIDE
Blank Display
When the device display is blank:
•
If the device display is dark, tap the screen with the stylus or your finger. If the
unit was in screen-saver mode, the screen will turn on when touched.
•
If the display does not show correct or readable information, then check all the
cable connections. If the problem persists, then contact your local Verifone
representative for assistance.
Keypad Does
Not Respond
If the keypad does not respond properly:
•
Check the device display. If it displays the wrong character or nothing at all
when you press a key, follow the steps outlined in
.
•
Refer to the user documentation for that application if pressing a function key
does not perform the expected action to ensure you are entering correct data
correctly.
•
Contact your local Verifone representative if the problem persists.
Transactions
Fail to Process
There are several possible reasons why the unit may not be processing
transactions. Use the following steps to troubleshoot failures.
Checking Magnetic
Card Reader
To check magnetic card reader:
1
Perform a test transaction using one or more different magnetic stripe cards to
ensure that the problem is not a defective card.
2
Ensure that you are swiping cards properly (see
).
3
Process a transaction manually using the keypad instead of the card reader. If
the manual transaction works, then the problem may be a defective card
reader.
4
Contact your local Verifone representative if the problem persists.
Checking Smart Card
Reader
To check smart card reader:
1
Perform a test transaction using several different smart cards to ensure the
problem is not a defective card.
2
Ensure that the card is inserted correctly (see
).
3
Ensure that the SAM cards are properly inserted in the slots and are properly
secured.
4
Contact your local Verifone representative if the problem persists