Specifications

Maxiva ULX Series
November 11, 2013
3‐5
888‐2628‐300 WARNING:Disconnectprimarypowerpriortoservicing.
Copyright©2013,HarrisBroadcast
3.2.4 TCUCards‐ResetsandMemoryCards

Figure 3-4 TCU Front Panel Lowered
TherearetwopowersupplycardslocatedontheleftsideoftheTCUchassisandsevenoreightcardstotheright
sideofthePSs.Theboardsarenumbered1through8,righttoleft.The1stboard(furthesttotheright)istheMCM
(maincontrolmodule),the
2ndboardisthePCM(processorcontrolmodule),the3rdboardistheRFdetector,the
4thisthecustomerI/Oboard,the5thistheexciterswitcher,6this PSmonitorthe7th&8tharePAinterface(digital
I/O)boards.The8thcard(PAinterface)isonlypresent
intransmitterswithmorethan8PAmodules.Thetwopower
suppliesontheleftareredundant.
Togainaccesstotheinternalboards,simplypulloutwardandthendownonthefrontoftheTCUpanel.The
openingsontheleftandrightoftheTCUfrontpanelcanbeusedashandles.
ShouldtheGUIscreengogray,blackoryelloworgiveacommunicationswarning,aPCMresetmayberequired.To
resetthePCM,pulldowntheGUIfrontpanelexposingthecircuitcardsintheTCUchassisasshownin
Figure3‐4.
ThesecondboardfromtherightisthePCMboard.ThePCM‐2resetbuttonislocatedtowardthecenterofthe
board(aninchfromthefrontedge)andfacestheRFdetectorboard.Useafingertip,pencilorpentogentlydepress
thesmallbutton.
Note
It will take approximately 20 seconds for the PCM card to reset. If the transmitter is on the air, resetting
the PCM or panel PC will NOT affect transmitter RF output. Remote communications will be disrupted
during the reboot.
APCMsoftwarerestartorhard‐resetcanalsobeaccomplishedbypressingtheGUIsoftwarebuttonsTCUHOME>
SYSTEM>SERVICE>SOFTWAREUPDATEfollowedbyselectionoftheResettabandtheneithertheRestartorReboot
buttons.Thescreenandbuttonsareshownin
Figure3‐38onpage3‐31.
JustinfrontofthePCM‐2restartbuttonisamicroSDcard,2GBwhichservesasaharddriveforthecomputer
daughterboard onthePCM‐2card.ThecomputerimageandversionsofPCM‐2softwarearestoredonthiscard.
ThereisanotherresetbuttonnearthebottomoftheMCMboard(farthestboardtotheright).Thisresetbutton
resetsallTCUcardsexceptforthePCM.TheMCMresetresultsinacontrolsystemreset.TheMCMresetwilltake
thetransmitterofftheairforafewseconds.
JustabovetheMCMresetbuttonisaremovableflashmemorycardcontainingcontrolsystemsoftware.Thiscard
shouldbeinstalledinanyreplacementMCMcardthatisinstalled.Thecardcanberemovedwhilethetransmitteris
on‐airbutreinsertionofthecard(inPCM‐1systems)willcause
thetransmittertogooff‐airforafewsecondsasthe
TCUcontrolsystemreboots.SystemsthatusePCM‐2cardswillnotgooffairwhentheMCMflashmemorycardis
inserted.
MCM
Reset
PCM
Reset