12/20/11 888-2595-001 5-39
WARNING: Disconnect primary power prior to servicing.
Section 5 Maintenance and Alignments
ZX Series
necessary. Coverage should be complete, but so thin as to be
translucent.
STEP 6 Press load to base and wiggle load slightly, as desired, to ensure
compound fills all gaps.
STEP 7 Attach replacement load to output assembly heatsink with mounting
screws.
STEP 8 Torque mounting screws to 0.9 N-m (8 in-lbs).
STEP 9 Verify load integrity with ohmmeter measurement. Load should read 50
ohms +/- 2 ohms.
STEP 10 Solder tab of replacement load to center conductor of coax cable.
STEP 11 Flip output assembly closed and attach combiner support base to
heatsink.
STEP 12 Procedure complete.
When handling damaged RF loads, please observe the following warning regarding
beryllium oxide:
THIS PRODUCT CONTAINS BERYLLIUM OXIDE. THE PRODUCT IS ENTIRELY SAFE
PROVIDED THAT THE BEO CHIP 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, DISPOSE 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.
5.5.10 RF Splitter (901-0203-511/561/571)
• No user adjustments required.
• Beware of hot loads if transmitter has been operating with one or more PA
modules removed.
• Observe yellow/white phasing. Yellow-labeled cables should only connect
to the “upper” and white-labeled cables to the “lower” inputs of PA
backplane boards.
• In case of doubt, consult amplifier RF Interconnect Wiring Diagram in
accompanying drawing package for proper cable connections.
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