Keithley 2182 Service Manual page 8

4 Troubleshooting
Introduction ................................................................................
Repair considerations .................................................................
Power-on self-test .......................................................................
Front panel tests ..................................................................
KEY test ..............................................................................
DISP test ..............................................................................
Principles of operation ................................................................
Power supply .......................................................................
Display board ......................................................................
Digital circuitry ...................................................................
Analog circuitry ...................................................................
Troubleshooting ........................................................................
Display board checks ........................................................
Power supply checks .........................................................
Digital circuit checks .........................................................
Analog circuit checks ........................................................
Analog signal switching states ..........................................
No comm link error ...........................................................
5 Disassembly
Introduction ................................................................................
Handling and cleaning ................................................................
Handling PC boards ............................................................
Solder repairs .......................................................................
Static sensitive devices ........................................................
Assembly drawings ....................................................................
Disassembly ................................................................................
Case cover removal .............................................................
Motherboard removal ..........................................................
Front panel disassembly ......................................................
Main CPU firmware replacement ...............................................
Changing trigger link lines .........................................................
Removing power components ....................................................
Power transformer removal .................................................
Power module removal ........................................................
Instrument reassembly ................................................................
Power module connections ..................................................
Board installation ................................................................
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