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No indication,
no response
1. Battery is
drained.
2. Faulty battery.
1. Charge the equipment/ Change
battery.
2. Change battery.
“Er” appears
on the screen
Faulty main unit.
Send to Customer Services for
repair.
“E1” appears
on the screen
Low battery.
Charge the battery; if E1 appears
again within 15 minutes change the
battery.
Weak light
intensity
1. The optical fibre
is not correctly
installed.
2. The optical fibre.
is cracked.
3. There are
composite
residues on the
tip of the optical
fibre.
1. Reinstall the optical fibre correctly.
2. Replace with a new optical fibre.
3. Clean.
The
equipment is
not charging
when the
charger is
connected
1. The charger is
not connected
properly.
2. Faulty or
incompatible
charger.
1. Connect the charger to the power
supply.
2. Change the charger
Effective
duration
of the battery
is short
Diminished battery
capacity.
Replace with a new battery
The mode
indicator
twinkles when
charging
1. Low voltage.
2. Short-circuit of
the battery.
1. Back to normal after 15 minutes of
charging
2. Replace with a new battery
