Exfo DC0091A Manual de usuario descargar pdf (Pagina 2)

DC0091A November 2001 2/3

Solutions to Common Problems

Problem Cause Solution

The unit does not

power up.

The battery pack is

discharged.

➤ Charge the battery pack.

➤ Replace the battery pack with a

fully charged one.

➤ Connect the FTB-100/FTB-100B to

an external power supply using the

AC/DC adapter/charger.

The FTB-100/FTB-100B

is not connected to an

external power supply.

➤ Connect the FTB-100/FTB-100B to

an external power supply using the

AC/DC adapter/charger.

The external power

supply is unplugged.

➤ Make sure the external power

supply is plugged in at both ends.

Unit screen

is dark

a

.

The FTB-100/FTB-100B

backlight is off.

➤ Press the Backlight button.

External keyboard is

not working.

External keyboard has

not been detected.

➤ Unplug the keyboard and then plug

it again.

➤ Turn off the FTB-100/FTB-100B,

plug in the keyboard, and turn on

the FTB-100/FTB-100B.

Screen characters are

dim.

The Contrast and/or

Brightness control(s)

are not set properly.

➤ Adjust the Contrast and Brightness

controls.

The battery indicator

remains low after a full

charge.

The battery is not

properly calibrated.

➤ Perform a complete battery

recalibration, i.e. a full discharge,

immediately followed by a full

charge.

The touchscreen

needs to be

recalibrated frequently.

The 9 V battery is too

low.

➤ Replace the 9 V battery.

You took longer than

one minute to replace

the main battery.

➤ Have your fully charged

replacement main battery on hand

before changing the discharged

one.

The unit operating

time is reduced.

The NiMH main battery

is probably worn-out.

➤ Replace the NiMH main battery.

The NiMH main battery

was not fully charged.

➤ Charge the NiMH main battery.

➤ Perform a complete battery

recalibration

b

.

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