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SECTION 8.0
MAINTENANCE AND SERVICING
8.1 PERIODIC MAINTENANCE
The only periodic maintenance required on the SMX100 amplifier system is ensuring that the cooling
vents are not obstructed in such a manner that the airflow is restricted. Periodic cleaning of the vents
may be required depending on the degree of dust in the atmosphere.
8.2 SERVICING THE AMPLIFIER
Servicing of the amplifier by the operator is not recommended. Most of the internal circuitry requires
special and unique test instruments to trouble shoot, align and calibrate the circuits. Should servicing
be required, refer to Paragraph 8.3.
8.2.1 TROUBLESHOOTING
PROBLEM CAUSE
SOLUTION
COMMENTS
LCD display blank
No service voltages
Check line power.
Check service voltages,
+12VDC, -12Vdc, 5VDC
Connect AC line to
specified Prime power
source.
Refer to S/N tag on unit
Amp will not go to Operate
mode
Door interlock open,
Check that door interlock BNC
connector is terminated with
either 50 Ohms or short.
Power Supply fault
Main Power supply faulty
Check either for 28VDC for
Band 1, or 13VDC for band 2
Check on the LCD display
for the fault description.
Thermal fault
Over-heating
Make sure airflow is adequate
and ambient temperature within
the limit.
Meter Inaccuracy
Un-terminated Forward
and/or Reverse Sample
Ports
Use 50 Termination on Forward
and Reverse Sample Ports
