Advanced Maintenance Procedures; Advanced Functional Check - Harris ZX2500 Technical Manual

ZX Series
STEP 2
STEP 3
STEP 4
STEP 5
STEP 6
5.4

Advanced Maintenance Procedures

The maintenance procedures in this section should only be performed qualified
technicians with a firm understanding of the operating principles of the ZX transmitter
and transmitter technology in general. Do not attempt to perform any of the procedures
in this section before having thoroughly read and understood the entirety of this
technical manual.
!
WARNING:
NEVER PERFORM THE PROCEDURES DESCRIBED IN THIS SECTION WHILE
ALONE AND/OR NOT FULLY ALERT. SERIOUS BODILY INJURY OR DEATH COULD
RESULT FROM FAILURE TO OBSERVE PROPER SAFETY PRECAUTIONS.
5.4.1

Advanced Functional Check

This procedure provides additional steps beyond the Basic Functional Check in Section
3 – Operation to allow a technician perform a more detailed assessment of the
operational status of the ZX series transmitter.
Tools required:
Voltmeter
STEP 1
STEP 2
STEP 3
12/20/11
WARNING: Disconnect primary power prior to servicing.
Blow compressed air into heatsink fins to remove dust buildup. If
compressed air is not available, use a vacuum cleaner to suction dust
from heatsink.
Use dry paintbrush to dislodge stubborn dust.
Replace PA module in transmitter.
Repeat procedure with remaining PA modules.
Procedure complete.
Verify STATUS LED on amplifier front panel is green.
Compare forward power, reverse power, PA volts, and PA amps readings
to recorded baseline readings.
Check individual PA module currents via PA MODULE CURRENTS
pushbuttons on reverse side of front panel. All currents should be
balanced to within +/- 1A.
888-2595-001
Section 5 Maintenance and Alignments
5-13