User's Manual

Appendix
16-10
16
Warning Signs
Problem Causes and Remedies
appears
Handset is out-of-range.
Move to a location where signal is strong.
appears
Keyguard is active (
Z
P.XX-3).
Cancel Keyguard to use keys. Answer calls even
if Keyguard is active.
appears
Password Lock is active (
Z
P.XX-4).
Cancel Password Lock to use handset. Answer
calls even if Password Lock is active.
appears
Keyguard and Password Lock are both active
(
Z
P.XX-3, P.XX-4).
Cancel Keyguard, and then cancel Password
Lock to use keys. Answer calls even if Keyguard
and Password Lock are both active.
Low battery
message appears
and battery alarm
tone sounds
Battery is low.
Charge (
Z
P.1-14) or replace battery (
Z
P.1-
13).
Software Update
Check for 840P software updates and download as required.
Choose to begin update or schedule update.
⿟
Transmission fees do not apply to updates (including checking for
updates, downloading and rewriting).
⿟
Fully charge battery beforehand. Even if appears, low battery message
may appear. In this case, charge battery until Charging Indicator goes
out.
⿟
Select a place where signal is strong and stable.
⿟
Do not remove battery during the update. Update will fail.
⿟
Other functions are not available during Software Update.
⿟
The update may take some time.