User's Manual

SARS MP9112 Owner’s Manual
24
No buzzer when
reading a tag.
Buzzer malfunction. Reader may operate normally
without buzzer, but the reader
should be replaced as soon as
possible.
Reader board
failure.
If the reader does not read or
write, replace the reader.
Reader software is
corrupt.
Replace reader.
No RS-232
Communication.
External RS-232
cable malfunction
Check cable connectors for
bent or broken pins. Replace
external RS-485 cable if
necessary.
Internal RS-232
cable disconnected
or reversed.
Remove back cover and
reconnect internal cable.
Reader board
failure.
Replace reader.
No RS-485
Communication.
External RS-485
cable malfunction
Check cable connectors for
bent or broken pins. Replace
external RS-485 cable if
necessary.
Internal RS-485
cable disconnected
or reversed.
Remove back cover and
reconnect internal cable.
Reader board
failure.
Replace reader.
No Digital I/O
signals present.
Internal digital I/O
cable disconnected
or reversed.
Remove back cover and
reconnect cable.
Reader board
failure.
Replace reader.
Symptom Probable Cause Corrective Action