7 Maintenance
7.1 Introduction ...................................................................................................................................................... 7-1
7.2 Service options...................................................................................................................................................7-1
7.3 Handling and cleaning .....................................................................................................................................7-2
7.3.1 Backplane board ........................................................................................................................................7-2
7.3.2 Static-sensitive devices ............................................................................................................................. 7-2
7.4 Routine maintenance ........................................................................................................................................ 7-3
7.4.1 Line voltage selection .............................................................................................................................. 7-3
7.4.2 Changing the fuse .................................................................................................................................... 7-3
7.4.3 Changing the battery ................................................................................................................................7-3
7.4.4 Changing firmware.................................................................................................................................. 7-4
7.5 Disassembly of the instrument........................................................................................................................ 7-4
7.5.1 Removal of the case.................................................................................................................................. 7-4
7.5.2 Removal of individual boards................................................................................................................ 7-5
7.5.3 Replacement of the case ...........................................................................................................................7-7
7.6 Diagnostics .........................................................................................................................................................7-8
7.6.1 Preparations for running the diagnostics ............................................................................................. 7-8
7.6.2 Initial power-up test ................................................................................................................................ 7-8
7.6.3 Non-volatile memory test ........................................................................................................................7-8
7.6.4 Built-in-tests .............................................................................................................................................. 7-9
7.6.5 Display test
keys................................................................................................................................ 7-10
7.6.6 Display test
patterns ......................................................................................................................... 7-10
7.6.7 Display test Ñ char set ........................................................................................................................... 7-11
7.7 Test description and notes .............................................................................................................................7-11
7.7.1 Initial power-up test .............................................................................................................................. 7-11
7.7.2 Non-volatile memory tests.................................................................................................................... 7-12
7.7.3 Built-in-tests .............................................................................................................................................7-12
7.8 Troubleshooting ..............................................................................................................................................7-14
7.8.1 Digital board ........................................................................................................................................... 7-14
7.8.2 Display board.......................................................................................................................................... 7-15
7.8.3 Power supply........................................................................................................................................... 7-15
7.8.4 Micro DIN board .................................................................................................................................... 7-16
7.8.5 Backplane board ..................................................................................................................................... 7-16
7.8.6 BNC board................................................................................................................................................ 7-16
8 Replaceable Parts
8.1 Introduction ...................................................................................................................................................... 8-1
8.2 Electrical components list ................................................................................................................................8-1
8.3 Mechanical parts ...............................................................................................................................................8-1
8.4 Ordering information .......................................................................................................................................8-1
8.5 How to obtain factory service .........................................................................................................................8-1
8.6 Document list..................................................................................................................................................... 8-2
Appendices
A Interface Function Codes ............................................................................................................................... A-1
B ASCII Character Codes and IEEE-488 Multiline Interface Command Messages ................................... B-1
C Controller Programs ....................................................................................................................................... C-1
D IEEE-488 Bus Overview.................................................................................................................................. D-1
E IEEE-488 Conformance Information ............................................................................................................. E-1
F SCPI Conformance Information..................................................................................................................... F-1
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