JRC JSS-2250, Instruction Manual

Page: 157 / 220

Maintenance & Inspection
6-1
6. MAINTENANCE & INSPECTION
The performance and lifetime of the equipment depend on appropriate maintenance. This
chapter describes an outline of maintenance and inspection, self diagnosis and
troubleshooting.
6.1 General maintenance & inspection
In order to operate the equipment under optimum conditions, it is vital to perform regular
inspections and also, to keep accurate records. Inspections enable problems to be identified
before they become major malfunctions. The following inspections should be made regularly.
Inspection
sequence
Inspection item Procedure
1 Antenna system Check that antennas and the connectors are secure.
2 RF GAIN function
In the radiotelephone mode (TEL), turn the RF GAIN
control on the controller having access rights. Is the
radio static (noise) from the speaker adjustable?
3
Receiver condition
check by speaker output Check that the voice level and noise level are not
abnormally loud or soft.
4 Handset PTT switch
In the radiotelephone (TEL) mode, press the PTT
switch, and check that the unit transmits immediately
on the Tx meter or by
TX and TXON displayed on
the screen.
5
Transmission and
reception check by
performing radio
communication
In the radiotelephone (TEL) mode, check that normal
conversation is possible.
6
Condition of the data
terminal
When the communication mode is other than the telex
mode (e.g. TEL mode), check that the communication
mode can be set to the telex mode by pressing the
Enter key on the keyboard of the data terminal.
7 Air filter
Check that if the air filters of the power supply and/or
the battery charger are clogged with dust.