Testing The Lcd (Xrs Eid Stick Reader Only); Testing The Buttons; Testing The Battery; Caring For The Battery - Tru-Test XRS Service Manual

Testing the LCD (XRS EID Stick Reader only)

Try various functions to check that the LCD is operating correctly. Watch for missing or faded
segments, rows or columns of dots.
To test the backlight operation, view the LCD in low light conditions.
To test the contrast levels:
1 Press and hold both the Read button and the Scroll button to access the stick reader settings.
2 Scroll through the menu option by pressing the Scroll button repeatedly.
3 When CONTRAST is highlighted, press the Read button repeatedly to adjust the contrast level.

Testing the buttons

Test the two buttons by turning the stick reader on (press the Read button) and turning it off (press
and hold the Scroll button)

Testing the battery

The stick reader has a 7.4 V Li-ion battery fitted. The charging circuit on the PCA controls charging.
Charge indication is by measurement of the battery voltage.

Caring for the battery


Charge the stick reader for 3 hours before and after use (especially after storage).

To keep the stick reader battery fresh, fully charge the stick reader at least once every 6 months.
Even when you are not using the stick reader, the battery will discharge by itself. Battery life is
shortened if the battery remains discharged for long periods.

Lithium Ion batteries naturally lose some of their capacity each year depending on the temperature
and battery state, and eventually need to be replaced. Loss of capacity can be minimised by
storing the stick reader in a cool place (not in the sun), and with the battery only half full. It is
better to recharge the battery before use rather than after use.

The battery cannot be over-discharged during use.

Battery information


The displayed battery charge level is only accurate five minutes after being disconnected from the
power supply. Wait for five minutes before gauging the battery charge level.
With normal default settings applied, the stick reader‟s Automatic Power Down feature will turn off

the stick reader when it has not been used for over 15 minutes. This may give the impression that
the battery has gone flat. Turn on the stick reader again to continue scanning. This feature can be
turned off or time length modified. See Changing the stick reader settings using EziLink on page
33 (User Interface tab, Automatic Power Down setting).

The battery will not charge in extreme temperatures. Always charge the battery at temperatures
between 5 °C and 40 °C (41 °F and 104 °F).

Battery run time may be reduced at freezing temperature.

Battery problems

If there are doubts about the battery capacity, or if the battery doesn‟t appear to hold its charge, test
the battery.
Issue 2, 02/2013
SRS and XRS EID Stick Reader
20