14-
6
T
roub
leshooting
Q
General
Q
Charger/Battery
Troubleshooting
Problem
Possible Cause
Solution
Handset won't turn
on
Was
"
pressed long
enough?
Press
"
longer.
Battery may need to be
charged or replaced.
Charge battery or install a
charged battery.
Battery may not be
properly installed.
Install battery properly (
).
Handset won't
respond
Is
Switch On/Off
in
PIN Entry
On
?
If
On
, PIN1 is required. Enter
PIN1 according to onscreen
prompt.
Keypad won't
respond
Keypad Lock may be
active (
`
appears).
Cancel Keypad Lock (
).
Password Lock may be
active (
$
appears).
Cancel Password Lock (
).
REFRESH
appears
and handset
returns to Standby
Handset may have
been dropped or
subjected to shocks.
Handset failed to recognize
USIM Card temporarily. This
is not a malfunction.
Insert USIM Card
appears
USIM Card may not be
properly inserted.
Turn power off and check that
USIM Card is properly inserted,
then restart handset.
If the message still appears,
USIM may be damaged.
The correct USIM Card
may not be inserted.
Make sure the correct USIM
Card is inserted. The inserted
USIM Card may not be valid.
There may be debris
on IC chip/terminals.
Clean relevant parts with a
dry cloth and re-insert.
Battery strength
indicator flashes
when not charging
Ambient temperature
may be outside 5
o
C to
35
o
C.
Use within an ambient
temperature of 5
o
C - 35
o
C.
Saved entry/folder
does not appear on
handset
Entry/folder may be set
to Secret.
Activate Show Secret Data
(
Handset feels warm
Handset may warm
while charging.
Unless handset becomes
very hot to the touch, these
should be considered normal;
regardless, avoid prolonged
skin contact which could
cause burn injuries.
Handset may warm
during extended
periods of use.
Handset may warm
during Video Calls.
Cannot access
Memory Card files
Memory Card may not
be properly formatted.
Use 820SH/821SH-formatted
Memory Cards.
Cannot receive/
accept connection
requests even
when Bluetooth
®
/
Infrared is
On
Handset may not be in
Standby.
Return to Standby and retry.
Keypad Lock/Password
Lock may be active.
Cancel Keypad Lock/
Password Lock.
Software Update may
be in progress.
Wait until update is complete.
Problem
Possible Cause
Solution
Battery charges
quickly
Remaining charge
shortens charging time.
This is normal.
Battery may be
terminally exhausted or
defective. (Small Light
flashes red.)
Replace battery with a new one.
Problem
Possible Cause
Solution