Installation Guide

M400 INSTALLATION GUIDE 31
CHAPTER 4
Maintenance and Cleaning
The M400 device has no user-maintainable parts. It can, however, be cleaned.
General Care
Your terminal device is a product of superior design and craftsmanship and should
be treated with care. The following suggestions will help you protect your warranty
coverage.
• Keep the device dry. Precipitation, humidity, and all types of liquids or moisture
can cont
ain minerals that will corrode electronic circuits. If your device
does
ge
t wet, switch off the power, and allow the device to dry completely before
replacing it.
• Do not use or store the device in dusty and dirty areas. Its moving parts and
elect
ronic components can be damaged.
• Do not store the device in hot areas. High temperatures can shorten the life of
electronic devices, damage batteries, and warp or melt certain plastics.
• Do not store the device in cold areas. Moisture can form inside the device and
da
mage electronic circuit boards when the device returns to it
s normal
te
mperature.
• Do not drop, knock, or shake the device. Rough handling can break internal
circuit bo
ards and fine mechanics.
• Do not paint the device. Paint can clog the moving parts and prevent proper
op
eration.
• Keep the device free from any small and loose items (such as paper clips,
st
aples, or coins) that could accidentally get inside it through an opening
, such
as the
SD card reader slot or the primary smart card reader slot.
• Do not attempt to open the device other than as instructed in this guide. This
de
vice has security features that protect it from tampering. For example, t
he
file content will be deleted if the device’s outer casing is opened.
These suggestions apply equally to your terminal device, or any of its attachments
or accessories. If your device is not working properly, take it to the nearest
authorized service facility for servicing or replacement. For your safety, have this
device serviced only by a Verifone-authorized service provider.