Additional Hardware Troubleshooting Information
Troubleshooting 8-17
MX40 Reboots Intermittently Device reboots intermittently, possibly when
bumped or tapped. This may be caused by
wear, corrosion, or damage to the:
Battery Contacts
AA Battery Adapter Tray
• Chemical residue buildup on the contacts
in the AA battery adapter tray
• Corrosion of the contacts in the AA
battery adapter tray
• Separation of the flex circuit from the AA
battery adapter tray plastic body
Battery Compartment Contacts
• Chemical residue buildup on the battery
contacts in the battery compartment
• Corrosion of the battery contacts in the
battery compartment
• Separation of the battery contacts from
the silicone membrane in the battery
compartment
• Loss of battery contacts from the silicone
membrane in the battery
MX40 Battery Retention Tabs
• damage or breakage of the tabs results in
battery or battery adapter movement
during operation
• Check the battery. If there is damage
and/or corrosion of the battery
contacts, replace the battery.
• Check the AA battery adapter tray for
wear/damage (indentations) in the
contacts, and for wear/separation of
the flex circuit from the tray and
corrosion of the flex circuit contact
areas. Replace battery adapter as
necessary.
• Check battery compartment and
contacts for damage/ corrosion.
Once corrosion to the battery
contacts and/or damage to the
bond between the silicone
membrane and the battery contacts
occurs the MX40 cannot be
repaired in the field. The MX40 will
require replacement via the
Exchange Process, or for USA and
Canada only, repair (at the Philips
Lifecycle Support Center).
CAUSES:
Improper cleaning/disinfection of the
MX40 and AA battery adapter tray,
and/or use of unapproved cleaning and
disinfecting agents can cause the
above noted issues, specifically:
• Failure to remove the battery adapter
tray from the battery compartment for
cleaning/disinfecting allows chemical
to collect and dry under the battery
adapter tray, which results in residue
build up, contact corrosion, and
damage to the bond between the
silicone membrane and the battery
contacts, especially when bleach is
used
• Use of unapproved cleaning and
disinfecting agents (can damage the
silicone membrane, causing failure of
the bond to the battery contacts and
corrosion to the battery contacts)
• Improper application of cleaning and
disinfecting agents like soaking the
battery adapter tray and battery
compartment (can lead to corrosion
of the contacts in the AA battery
adapter tray and separation of the
flex circuit from the AA battery
adapter tray plastic body)
• Failure to wipe the MX40 and battery
adapter tray with a cloth dampened
with either distilled water or Isopropyl
Alcohol to remove chemical residue
following disinfection (causes
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