User's Manual

TorquerequirementsChapter8:FieldReplaceableUnits
Torquerequirements
WheninstallingtheQ-HSO,tightentheQ-HSOM4thumbscrewto:
•2.3N-m(20in-lbs)
Requireditem
Thefollowingreplacementunitisrequired:
•Q-HSO,MotorolamodelSGLA4017
Q-HSOreplacementprocedure
PerformthestepsdescribedinProcedure8-10toreplacetheQ-HSO.
Procedure8-10ReplacingtheQ-HSO
1
RemovetheBCUIIcardcageassemblyfromtheframe.
2
LocatetheQ-HSOontheBCUIIrearpanel.
3
UsingaT20TORXbitanddriver ,loosenthethumbscrewontheQ-HSO(seeFigure8-3).
Usingyourthumbandnger ,completelyloosenthecaptivethumbscrew .
4
Graspthetopend(thatis,thethumbscrewend)ofQ-HSOandpullitawayfromtheBCUII
rearpaneluntilthe9–pinD-connectorsarefullydisengaged.
5
SlidetheQ-HSOuntilthetabonthebottomendoftheQ-HSOisdisengagedfromthe
retainingslotontheBCUIIrearpanel.
6
WiththereplacementQ-HSOproperlypositioned,insertthetabonthebottomendofthe
Q-HSOundertheretainingslotontheBCUIIrearpanel.
7
AligntheQ-HSO9–pinD-connectorwiththeMSOconnectorontheBCUIIrearpanel.
FirmlypushthetopendoftheQ-HSOagainsttheBCUIIrearpaneluntiltheconnectorsare
fullyengaged.
8
AligntheQ-HSOthumbscrewwiththethreadedhole.UsingaT20TORXbitanddriver,
tightenthethumbscrewto2.3N-m(20in-lbs).
9
ReinstalltheBCUIIcardcageassemblyintotheframeaccordingthestepsinProcedure8-12
Reinstallingcardcageassemblyonpage8-23.
Referencediagram
ThefollowingdiagramhelpsclarifyandsupportcertainstepsofProcedure8-10.
8-1868P09308A55-6
FEB2010