ContentsTOC-viii Strata DK40 I&M Manual Spring 1999Refer to the Strata DK40 Programming Manual or DK Library CD-Rom for more details.Handling Outgoing Calls ...................................................................................................... 8-55Handling Incoming Calls...................................................................................................... 8-56Chapter 9 - Fault FindingFault Classification ................................................................................................................. 9-1Fault Clearing Procedures....................................................................................................... 9-1Defective Parts Return............................................................................................................ 9-3KSU Fault Isolation ................................................................................................................ 9-3Fault Isolation Procedure.................................................................................................. 9-3Power Supply Test.................................................................................................................. 9-4Station Cable Continuity Check ............................................................................................. 9-4Voltmeter Test .................................................................................................................. 9-4Ohmmeter Test ................................................................................................................. 9-5Cable Installation Test...................................................................................................... 9-6Fault Isolation Flowcharts ...................................................................................................... 9-8IndexList Of FiguresFigure 2-1 DK40 Base KSU Clearance Requirements .....................................................2-2Figure 2-2 DK40 Base KSU and Expansion KSU Clearance Requirements ...................2-2Figure 2-3 DK40 Earthing Diagram .................................................................................2-4Figure 2-4 KSU Wall Mounting .....................................................................................2-10Figure 2-5 Base KSU Exterior........................................................................................2-10Figure 2-6 DK40 Base KSU Interior ..............................................................................2-11Figure 2-7 Exchange Line Board Installation into DK40 Base KSU .............................2-12Figure 2-8 Base KSU Cables and Connectors ................................................................2-13Figure 2-9 Base to Expansion KSU Connection.............................................................2-14Figure 2-10 Expansion KSU Mounting and Connections ................................................2-15Figure 2-11 Expansion KSU Slot Lock ............................................................................2-16Figure 2-12 System Power Supply Wiring .......................................................................2-17Figure 2-13 Base KSU Power Failure Transfer (PFT) Circuit Diagram ..........................2-19Figure 2-14 Power Supply (TPSU16A)............................................................................2-20Figure 2-15 DTMF Receiver Board (K5RCU) Installation..............................................2-25Figure 2-16 Standard Telephone Interface Board (KSTU3) ............................................2-29Figure 2-17 Standard Telephone Interface Subunit (KSTS3) ..........................................2-29Figure 2-18 KSTU3/KSTS3 Installation ..........................................................................2-31Figure 2-19 DK40 Loop Start Exchange Line Board (TCOU) ........................................2-34
