Ps Module (736-0445-000) - Harris ZX2500 Technical Manual

Section 5 Maintenance and Alignments
STEP 4
NOTE:
A ready-made thermal pad (404-0899-077) with the correct dimensions for the
module heatsink is also available.
STEP 5
STEP 6
STEP 7
When handling damaged PA modules, please observe the following warning regarding
beryllium oxide:
!
WARNING:
THIS PRODUCT CONTAINS BERYLLIUM OXIDE. THE PRODUCT IS ENTIRELY
SAFE PROVIDED THAT THE BEO DISC IS NOT DAMAGED. ALL PERSONS WHO
HANDLE, USE, OR DISPOSE OF THIS PRODUCT SHOULD BE AWARE OF ITS
NATURE AND OF THE NECESSARY SAFETY PRECAUTIONS. AFTER USE, DIS-
POSE OF AS CHEMICAL OR SPECIAL WASTE ACCORDING TO THE REGULATIONS
APPLYING AT THE LOCATION OF THE USER. IT MUST NEVER BE THROWN OUT
WITH THE GENERAL OR DOMESTIC WASTE.
5.5.3

PS Module (736-0445-000)

•
Actuate extractor lever to begin removal from chassis.
•
See PS module swap procedure earlier in this section.
•
No user adjustments.
•
Modules are hot-pluggable; they can be removed and replaced while
transmitter is running.
•
Internal fans will run for approximately five seconds after module is
unplugged.
•
Contact Harris or supply manufacturer for factory repair options.
5-32
WARNING: Disconnect primary power prior to servicing.
Apply thin, but even, coating of thermal compound to bottom of copper
plate of replacement amplifier. Level with rubber roller or other
straight-edge as necessary. Coverage should be complete, but so thin as
to be translucent.
Attach replacement power amplifier assembly (copper plate) to
Aluminum heatsink. Tolerance on screw holes will assure proper
alignment of new PA into transmitter chassis.
Reattach cover.
Procedure complete.
888-2595-001
ZX Series
12/20/11