BEWATOR COTAG 4101-2, Installation Handbook, Page: 139 / 158

Fault finding
19-7
Solution : if the RF module is fitted, check the connections between
the module and the antenna. The reading head may be broken but
this is highly unlikely.
Tx LED not flashing
If the reader is not being polled then this is almost certainly because
it has not been configured in the Software, or the commands to
configure it have not been downloaded.
Solution : you must check the configuration of the reader by
generating a system list in the Software. Amend the Access Point
record if necessary and download the data to the Controller. To do
this, the comms must be working.
Is there power to the Controller?
The POWER LED should be lit and the STATUS LED should be
flashing slowly.
Power LED not lit
If the POWER LED on the Controller lid is not lit then there is either
no power to the Controller or fuse FS1 has blown. Each Controller
requires 12V DC on CONN4 of the motherboard. Each 4910 Power
Supply Unit can supply no more than 5 amps at 12V.
Solution : check the fuse and check that the power supply is
connected and working.
Power LED is lit but STATUS LED is not
Either the voltage has dropped to such an extent that the processor
has stalled or the Controller is faulty. Check that the voltage is at
least 10V measured between the 0V and +12 pins of the CONN4
connector on the motherboard. If the STATUS LED is flashing quickly
then the processor is running but the supply voltage has dropped
below 10V.
Solution : make sure the power supply is not overloaded.