Sea Tel Cosel 150W User manual

Procedure, Field Replacement, Cosel 150W Power Supply Kit
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Document No
135263 Rev B
Copyright © Sea Tel, Inc 2011 - The information contained in this document is proprietary to Sea
Tel, Inc.. This document may not be reproduced or distributed in any form without prior written
consent of Sea Tel, Inc. 


1. BriefSummary:
TroubleshootingdocumentfordiagnosingafaultwithandreplacingtheCosel150Wpowersupplyunit.
2. Checklist:

VerifyACVoltageispresententeringthepowersupply
VerifyDCVoltageispresentexitingthepowersupply
3. TheoryofOperation:
TheCosel150Wpowersupplyisswitchmode&willconverteither110VACor220VACinto24VDC.Thiscomponentis
universallyusedintheDAC‐2202,XX97&XX06pedestalpowersupplies,XX09&XX10PCU’s&NJRC24VBUCPower
suppliesmeaningonlyasingleunitisneededasasparetocoverawiderangeofapplications.
4. Troubleshooting:


1.Measuretheinputvoltageintothepowersupplyonthe2pins
totherightoftheconnectionblock,110‐240voltsACshouldbe
present.IfnoACvoltageispresentverifytheunitisswitchedon.
Ifthereisstillnovoltagepresenttroubleshootthesource.



2.Nowmeasuretheoutputvoltagefromthepowersupplyonthe
2pinstotheleftoftheconnectionblock,theoutputshouldbe
24VDC.



IftheunitsACinputhasbeenverified&the24VDCisnotpresent,thepowersupplyisdefective&needstobereplaced.
Ifthepowersupplyisoutputtingthe24VDCconsistentlythenthepowersupplyisoperational&theproblemlies
elsewhere(possiblefailurewiththePCU,DACmotherboardorharnessconnection).


Procedure, Field Replacement, Cosel 150W Power Supply Kit
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
Document No
135263 Rev B
Copyright © Sea Tel, Inc 2011 - The information contained in this document is proprietary to Sea
Tel, Inc.. This document may not be reproduced or distributed in any form without prior written
consent of Sea Tel, Inc. 


5. ReplacingtheDAC‐2202PowerSupply:
5.1. Tools.

#1PhillipsScrewdriver
Loctite242

5.2. Procedure.

ProcedureforreplacingtheDAC‐2202powersupply,SeaTelkitpartnumber:135341(powersupplypartnumber:
125343‐6).

*Caution:DisconnectthevesselsACVoltagetotheDAC
priortoperformingthebelowprocedure.
1.Usinga#1Phillipsscrewdriverundothe6screwsretaining
theDAClid&removeit.Savethehardwareforfutureuse.



2.NotetheorientationoftheAC&DCcablesonboththe
powersupplyunit&theswitch.


3.DisconnecttheACpowercablesfromthepowerswitch.


4.TurntheDACassemblyover&usinga#1Phillips
screwdriverremovethetwoscrewssecuringthepower
supplytothebaseoftheDACshell.


Procedure, Field Replacement, Cosel 150W Power Supply Kit
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Document No
135263 Rev B
Copyright © Sea Tel, Inc 2011 - The information contained in this document is proprietary to Sea
Tel, Inc.. This document may not be reproduced or distributed in any form without prior written
consent of Sea Tel, Inc. 


5.TurntheDACthecorrectwayup&removethetwoscrews
securingthepowersupplytothesideoftheDACshell.

6.Raisethepowerssupplyunittoallowclearance&remove
thecover,thenremovetheDCpowercables.


7.NowremovetheACcablesfromthedefectivepower
supply&connectthemtothereplacementunit.


8.ConnecttheDCcablestothepowersupplyasshownon
theright.


9.Nowinstallthe4screwstosecurethepowersupplyinto
theDACshell.Installtheplasticcoverovertheterminal
connectionsandreconnecttheACcablestothepower
switchasshownontheright.
10.ReinstalltheDAClid&securewiththe6screwsremoved
inthefirststep,applyLoctite242tothethreads.




Procedure, Field Replacement, Cosel 150W Power Supply Kit
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
Document No
135263 Rev B
Copyright © Sea Tel, Inc 2011 - The information contained in this document is proprietary to Sea
Tel, Inc.. This document may not be reproduced or distributed in any form without prior written
consent of Sea Tel, Inc. 


6. ReplacingtheXX09andXX10PedestalPowerSupply:
6.1. Tools.

5/16”(8mm)Wrench/Spanner
2mmFlatBlade(Terminal)Screwdriver
Snips/Cutters
3/16”(5mm)AllenWrench/Key
#1PhillipsScrewdrivers
CableTies/TieWraps
Loctite242

6.2. Procedure.

ProcedureforreplacingtheXX09Pedestalpowersupplyunit,SeaTelpartnumber:125343‐6.ThePCUwillhavetobe
removedfromtheequipmentframetoreplacethepowersupply.
6.3. RemovingthePCU.

*CAUTION:Powerdownthepedestalbeforefollowingthis
procedure.

1.Usinga5/16”(8mm)wrenchremovethe3coaxcablesfromthe
switchassemblymountedinthePCU.
2.Usinga5/16”(8mm)wrenchremovethe2coaxcablesfromthe
400MHzmodemPCB(takingnoteofwheretheSMAconnectors
needtobereconnected).
3.Usinga2mmflatbladescrewdriver,removetheD‐Sub
connectors.
4.UnplugtheGPScable.
5.Usingcutterscutthelargecabletieonthepowercordconnector
anddisconnectthepowercord.


6.Usinga3/16”(5mm)Allenwrench,removethe4capheadscrews
thatmountthePCUtotheequipmentframe.Retainthesescrews
forfutureuse.

7.WiththePCUremovedfromtheequipmentframe,refertothe
followingprocedureregardingremovingthecoverfromthe
assembly.


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Procedure, Field Replacement, Cosel 150W Power Supply Kit
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
Document No
135263 Rev B
Copyright © Sea Tel, Inc 2011 - The information contained in this document is proprietary to Sea
Tel, Inc.. This document may not be reproduced or distributed in any form without prior written
consent of Sea Tel, Inc. 


6.4. RemovingthePCUCover.

1.Usinga#1Phillipsscrewdriver,
removethe2Phillipsscrewsinthelip
edgeabovetheconnectors.



2.Removethe4Phillipsscrewsonthe
topofthePCU.



3.Removethe2Phillipsscrewsonthe
backsideofthePCU.

4.Retainallofthescrewsforfutureuse.


5.RemovethecoverofthePCU





Procedure, Field Replacement, Cosel 150W Power Supply Kit
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
Document No
135263 Rev B
Copyright © Sea Tel, Inc 2011 - The information contained in this document is proprietary to Sea
Tel, Inc.. This document may not be reproduced or distributed in any form without prior written
consent of Sea Tel, Inc. 


6.5. ReplacingtheXX09andXX10PedestalPowerSupply.

1.DisconnectthePowerSupplyWires

LargeBlue–A/C(N)
LargeBrown–A/C(L)
Greenw/Yellowstripe–FG
SmallBrown(GND)–V‐
NC
SmallBlue(+24VDC)‐V+
NC


2.FromthebottomofthePCU,usea#1Phillipsscrewdriverto
removethe2PhillipsscrewsthatmountthePowerSupplyinsidethe
PCU.Retainthesescrewsforfutureuse.



3.FromtheoutsideofthePCU,removethe2Phillipsscrewsthat
mountthePowerreceptacle.Retainthesescrewsforfutureuse.

4.Removethereceptacle.

5.RemovethedefectivePowerSupply.

6.InstallthereplacementPowerSupply.

7.ApplyLoctite242tothe2PhillipsscrewsandmountthePower
SupplyintothePCU.

8.ApplyLoctite242tothe2PhillipsscrewsandreinstallthePower
receptacleintothePCU.

9.ReconnectthePowerSupplyWiresasshownabove.



10.Ifallrepairworkisnowcompleted,reinstallthePCUcoverand
thePCUtotheequipmentframe.

11.SecurethepowercableintothePCUA/Csocketusingacabletie.


