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Maintenance
Reader Unit Maintenance
The Reader Unit requires little maintenance except to charge the batteries as necessary
and the connectors are kept clean and dry. When the voltage from the battery pack falls
below 9.8 volts, the Reader Unit will display the message BATTERY low on the LCD
display If the unit is not recharged the voltage will still drop and the instrument will
then automatically shut down, although any data stored in the memory will be retained.
When this occurs, the only way to restart the instrument is to recharge the batteries.
Ensure that the connector caps are secured onto any connectors which are not in use.
Reset
If the reader unit behaves erratically:
•
The Reader Unit will not switch ON or OFF
•
LCD display will not display all the characters
•
Press keys will not operate reliably
•
Down loaded data out of sequence
It is necessary to reset the reader unit PCB for the above behaviour. If the unit will not
switch off by pressing the
ON/OFF
key, the front panel should be unscrewed and the
battery lead to the main PCB will need to be disconnected and then re-connected. Once
the reader is switched off use the following procedure:
The RESET function is initiated by keeping the
ESC
key depressed while pressing the
ON/OFF
key. The message on the LCD display will ask you if you wish to continue or
escape. Press the
ENTER
key for yes. It will then ask you want to set
YK Ser Probe
Yes
Enter, No ESC. After pressing Enter it will ask if the unit is fitted with a depth sensor. If
there is no depth sensor fitted on the probe press the
ESC
key, if there is a depth sensor
then press the
ENTER
key.
It is important to now restart the reader unit (and not press any other key) by
powering it off by pressing the ON/OFF key and powering it up again.
If the reader unit is fitted with an internal Bluetooth and GPS module go to
Establishing
Bluetooth and GPS Power
in section
Internal Bluetooth and GPS
above.
The
RESET
function will not change or clear the calibration constants from the Reader
Unit’s memory. However it will remove stored or logged data. It will be necessary to
reconfigure the display if any customization has been done to the display order.