VeriFone VX 820 Installation Guide

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VX 820 INSTALLATION GUIDE 29
CHAPTER 6
Troubleshooting Guidelines
This chapter lists typical examples of malfunctions that you may encounter while
operating your VX 820 and the steps that you can take to resolve them.
The troubleshooting guidelines provided in the following section are included to
assist successful installation and configuration of the VX 820. If you are having
problems operating your VX 820, please read these troubleshooting examples. If
the problem persists even after performing the outlined guidelines or if the
problem is not described, contact your local VeriFone representative for
assistance.
Blank Display
When the VX 820 display does not show correct or clearly readable information:
• Check all power and cable connections.
• If the problem persists, contact your local VeriFone service provider.
Keypad Does
Not Respond
If the keypad does not respond properly:
• Check the display. If it displays the wrong character or nothing at all when you
press a key, follow the steps outlined in Transactions Fail To Process.
• If pressing a function key does not perform the expected action, refer to the
user documentation for that application to ensure you are entering data
correctly.
• If the problem persists, contact your local VeriFone representative.
NOTE
The VX 820 comes equipped with tamper-evident labels. The VX 820 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.
CAUTION
Not all units require use of a power supply.
Using an incorrectly rated power supply may damage the unit or cause it not to
work properly. Before troubleshooting, ensure that the power supply used to
power the unit matches the requirements specified on the back of the unit (see
Specifications for detailed power supply specifications). If not, obtain the
appropriately rated power supply before continuing with troubleshooting.

VeriFone VX 820 Specifications

General

Display	3.5 inch color touchscreen
Connectivity	Ethernet, USB, RS-232
Processor	400 MHz ARM11
Memory	128 MB Flash, 32 MB SDRAM
Card Readers	Magnetic stripe, contactless
Security	PCI PTS approved
Weight	320g