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22-1
22. Maintenance and
Troubleshooting
Periodic checks and maintenance are important for proper operation of any electronic system. This chapter contains
maintenance and troubleshooting instructions to be followed to obtain optimum performance and the longest
possible life of the equipment. Before attempting any maintenance or troubleshooting procedure please review the
safety information below. If you cannot restore normal operation after following the troubleshooting procedures do
not attempt to check inside any unit; there are no user-serviceable parts inside. Any repair work should be referred to
a qualified technician.