Specifications

Maxiva ULX Series
November 11, 2013
5‐9
888‐2628‐300 WARNING:Disconnectprimarypowerpriortoservicing.
Copyright©2013,HarrisBroadcast
STEP 1 TurnoffPAmodulebreaker.
Warning
MODULE MAY BE HOT. ALLOW THE MODULE TO COOL BEFORE REMOVAL.
STEP 2 Wait30secondsforthemoduletocool.
STEP 3 UnscrewretainingscrewsandremovePAmodule.
STEP 4 RemovePAmodulecover.
STEP 5 Removefour(4)centerpalletholddownscrews(Allenhead).
STEP 6 Removefive(5)additionalpalletholddownscrews(Phi llipshead).
STEP 7 De‐soldertwojumpersandtheblue&grayDCsupplywires.
STEP 8 Removeboardandcleanupheattransfercompound.
Note
Removal of the pallet may be difficult due to the presence of the heat transfer compound under the board.
To remove the board first remove the cover supports either side of the board. Removal of the supports
allows room to insert a flat blade screwdriver beneath the edge of the board. Use the screwdriver to gently
pry upward without placing stress on adjacent boards. Repeat this process along the edges of the board in
several places until it loosens up.
STEP 9 Reapplyheattransfercompound.Useasmallrollerorbrushtoapplyeven,thincoat.
STEP 10 Installpalletandallholddownscrews.
STEP 11 Torquefour(4)allenscrewsto30inlbs.
STEP 12 Soldertwojumpersandtheblue&grayDCsupplywires.Materialtoreplacethe
jumpersisincludedinthepalletreplacementkit.Cutthereplacementjumpersto
matchthoseremoved.
STEP 13 ReplacePAmodulecover.
STEP 14 ReplacePAmoduleinrack.Tightenmoduleholddownscrews.
STEP 15 TurnonPAmodulebreaker.PressthetransmitterONbuttontoreactivateallmodules
thatareOFF.
5.7 PAModule AC/DCConverter(PS)Board
5.7.1 PSBoardRemovalandReplacement
Figure 5-6 PA Module AC/DC Converter (PS power supply) Board
Fuse
Connector
PSBoard
WAGO
Trim
Pot