User's Manual

M7X and M7R Page 5-3 Maintenance

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Scheduled Maintenance

Park Air recommends that scheduled maintenance be carried out at twelve-monthly intervals. If the radio

is operated in harsh conditions, scheduled maintenance may be required more frequently. Scheduled

maintenance comprises the following actions:

Cleaning and Checking Security of Connectors

 Remove any dust and dirt from the radio’s exterior surfaces using a lint-free cloth and camel

hair brush.

 Take particular care when cleaning the display: dust should be removed using the camel hair

brush. Any marks that remain after brushing should be removed by gently wiping with a very

lightly dampened clean lint-free cloth. Do not use a dirty cloth to wipe the display; any grit

particles may scratch the display screen.

 Ensure that all external connectors are secure and free from damage.

Number Action Tools/Test Equipment Required

Ensure the radio is clean and that external

connectors are securely fitted.

Camel hair brush. Clean lint-free cloths.

Check the radio’s internal frequency

reference. Adjust as required.

Frequency counter able to measure 10 MHz.

Perform an ac and dc change-over check (if

both input supplies are connected to the

radio).