6
Service Information
Introduction .........................................................................................................................................................
6-1
Handling and cleaning precautions .....................................................................................................................
6-1
Performance verification.....................................................................................................................................
6-2
Environmental conditions ...........................................................................................................................
6-2
Recommended equipment...........................................................................................................................
6-2
Matrix connections......................................................................................................................................
6-2
Channel resistance tests ..............................................................................................................................
6-3
Offset current tests ......................................................................................................................................
6-4
Contact potential tests .................................................................................................................................
6-6
Path isolation tests.......................................................................................................................................
6-7
Differential and common-mode isolation tests ...........................................................................................
6-8
Channel functionality test .................................................................................................................................
6-10
Special handling of static-sensitive devices......................................................................................................
6-11
Principles of operation ......................................................................................................................................
6-11
Block diagram ...........................................................................................................................................
6-11
ID data circuits ..........................................................................................................................................
6-12
Matrix relay control ..................................................................................................................................
6-13
Matrix relay power control .......................................................................................................................
6-13
Digital I/O output channel control ............................................................................................................
6-13
Digital I/O input channel control ..............................................................................................................
6-13
Power-on safeguard...................................................................................................................................
6-13
Troubleshooting ................................................................................................................................................
6-14
Troubleshooting equipment ......................................................................................................................
6-14
Troubleshooting access .............................................................................................................................
6-14
Troubleshooting procedure .......................................................................................................................
6-14
7
Replaceable Parts
Introduction .........................................................................................................................................................
7-1
Parts lists .............................................................................................................................................................
7-1
Ordering information ..........................................................................................................................................
7-1
Factory service ....................................................................................................................................................
7-1
Component layouts and schematic diagrams ......................................................................................................
7-2
Index
iii
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