Specifications

Maxiva UAX

October 17, 2013

5‐37

888‐2693‐004 WARNING:Disconnectprimarypower priortoservicing.

STEP 3 LocatethebatteryholderonthePCM‐2card.LocationisshowninFigure5‐

21.

Figure 5-21 PCM-2 Battery

STEP 4

Useasmallflatbladescrewdrivertogentlypryopenthebatteryholddown

clipwhileslidingthebatteryundertheclip.The+sideofthebatterymust

installedclosesttothebatteryclip,i.e.the+sidemustpointawayfromthe

board.TheinstalledbatteryisshowninFigure5‐21.

STEP 5 Closefrontpanel.

STEP 6 ReapplyACpower.

STEP 7 Resettimeanddateasneeded.Seesection5.8.3onpage5‐36.

STEP 8 Endofprocedure.

5.8.5 TCUCardReplacement

ShoulditbecomenecessarytochangecardsintheTCUusethefollowingprocedure:

STEP 1

GototheSystem>Service>Versionscreenandnotetherevisionlevelsofthe

PCMandMCMcardsiftheyaregoingtobechanged.

STEP 2 Turnoffthetransmitteranddisconnectpowerfromthetransmittercabinet

ordisconnecttheACplug(s)fromtherearoftheTCU.

STEP 3 UsethefingerholecutoutsbuiltintothesidesoftheTCUfrontpanelas

handles,pulloutwardanddownonthefrontpanel.

STEP 4 RemovefourrackmountingfastenersfromtheeachsidesoftheTCUfront.

STEP 5 PulltheTCUchassisoutoftherackasfarastheslidesallow.

STEP 6 TheTCUcanbepivoteddownwardforeasieraccesstothecards.Thisisdone

byremovingthefrontscrewoneithersideoftheTCUslidebrackets.

Warning

THE TCU MUST BE SUPPORTED WHILE REMOVING THESE SCREWS TO KEEP IT

FROM FALLING DOWNWARD RAPIDLY.