VeriFone V240M3GBW ユーザーズマニュアル

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This chapter lists typical malfunctions that may occur while operating a V240m 
device and the appropriate corrective action. If the problem persists – even after 
performing the outlined guidelines, or if the problem is not described, contact your 
local Verifone representative for assistance.

Use the following steps to check the display panel:

Check all the cable connections.

Check the controlling device's AC outlet to be sure the outlet is supplying 
sufficient power. Substitute the controlling device's power pack with another 
power pack.

The controlling device's application program might not be loaded correctly. 
Download the application program and try again.

If the problem persists, contact your local Verifone representative.

Use the following steps to check the keypad:

Check the display panel. If there are no characters, or the wrong characters 
are displayed, refer to 

If the problem persists, contact your local Verifone representative.

There are several possible reasons why the unit may not be processing 
transactions. Use the following steps to troubleshoot failures.

Perform a test transaction using one or more different magnetic stripe cards to 
ensure the problem is not a defective card.

Ensure that you are swiping cards properly (see 

Process a transaction manually using the keypad instead of the card reader. If 
the manual transaction works, the problem may be a defective card reader.

The V240m device uses a tamper-evident case and contains no user-serviceable 

parts. Do not, under any circumstance, attempt to disassemble the unit. Perform 
only those adjustments or repairs specified in this guide. For all other services, 
contact your local Verifone service provider. Service conducted by parties other 
than authorized Verifone representatives may void any warranty.