Toshiba Strata DK40 Installation & Maintenance Manual page 10

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