Keithley S46, Instruction Manual

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2-10 Document number: S46-901-01 Rev. F / March 2011
Section 2: Connections S46/S46T/S46L Microwave Switch System Instruction Manual
WARNING
Disconnect the line cord from the instrument before removing the
top cover and replacing the power supply fuse.
To replace the line fuse:
1. Remove the screws that secure the top cover, and then remove the cover.
2. Locate the in-line fuse holder (see Figure 2-6 ).
3. Twist the fuse holder to open it, and then remove the fuse.
4. Replace the damaged fuse with one that has the fuse rating listed in Table 2-4 .
5. Replace the top cover.
WARNING For continued protection against fire or instrument damage, replace the
fuse only with a CERTIFIED part of the type and rating listed. If the
instrument repeatedly damages fuses, locate and correct the cause of the
problem before replacing the fuse.
Table 2-4
Power supply fuse
Line voltage Fuse rating Keithley part number
100 V to 240 V 1.6 A slow blow, 250 V, 5 mm x
20 mm FU-106-1.6