Keithley 2750 Service Manual page 12

4 Troubleshooting
Table 4-1 Power supply components ......................................................
Table 4-2 Display board checks ...........................................................
Table 4-3 Power supply checks ............................................................
Table 4-4 Digital circuitry checks ........................................................
Table 4-5 DCV signal switching ..........................................................
Table 4-6 ACV and FREQ signal switching ........................................
2 signal switching ..............................................................
Table 4-7
4 signal switching ..............................................................
Table 4-8
4 dry circuit signal switching ............................................
Table 4-9
2/4 reference signal switching ........................................
Table 4-10
Table 4-13 ACA signal switching ..........................................................
4 dry circuit reference signal switching ............................
Table 4-11
Table 4-12 DCA signal switching ..........................................................
Table 4-14 DCV signal multiplexing and gain .......................................
Table 4-15 ACV and ACA signal multiplexing and gain ......................
Table 4-16 DCA signal multiplexing and gain .......................................
2 signal multiplexing and gain ..........................................
Table 4-17
4 signal multiplexing and gain ..........................................
Table 4-18
4 dry circuit signal multiplexing and gain ........................
Table 4-19
Table 4-20 Switching device locations ...................................................
5 Disassembly
Table 5-1 Input terminal wire colors ......................................................
Table 5-2 Power module wire colors ......................................................
6 Replaceable Parts
Table 6-1 Model 2750 motherboard parts list ........................................
Table 6-2 Model 2750 display board parts list .....................................
Table 6-3 Model 2750 backplane board parts list ................................
Table 6-4 Model 2750 miscellaneous parts list ....................................
Table 6-5 Model 7700 module parts list ...............................................
A Accuracy and Optimization
B Calibration Reference
Table B-1 Remote calibration command summary ................................
Table B-2 DC calibration commands .....................................................
Table B-3 AC calibration commands ...................................................
Table B-4 Model 7700 calibration commands .....................................
Table B-5 Calibration errors ................................................................
C Calibration Program
4-5
4-14
4-14
4-15
4-16
4-17
4-18
4-19
4-20
4-20
4-21
4-21
4-21
4-22
4-22
4-22
4-23
4-23
4-23
4-24
5-6
5-7
6-3
6-12
6-13
6-14
6-15
B-2
B-8
B-13
B-16
B-21