Table 2-3 Line Fuse; Table 2-4 Power Supply Fuse - Keithley S46 Instruction Manual

S46/S46T Microwave Switch System Instruction Manual
3.
CAUTION
4.
Table 2-3
Line fuse
Line voltage
100-240V
Power supply fuse replacement
An internal fuse protects the output of the 28V DC power supply of the S46/S46T. If the
inline fuse needs replacement, perform the steps below:
WARNING
1.
2.
3.
4.
5.
CAUTION
Table 2-4
Power supply fuse
Line voltage
100-240V
Remove the carrier with blown fuse, and replace the fuse with the correct type
listed in Table 2-3.
For continued protection against fire or unit damage, replace the fuse
only with the type and rating listed. If the unit repeatedly blows fuses,
locate and correct the cause of the problem before replacing the fuse.
Install the fuse carrier in the fuse holder, then insert the fuse holder in the power
module.
Fuse rating
1.6A slow blow, 250V, 5 X 20mm FU-106-1.6
Disconnect the power line cord from the unit before removing the top
cover and replacing the power supply fuse.
Remove the screws that secure the top cover and remove it.
Refer to Figure 2-6 to locate the inline fuse holder.
Remove fuse (twist to open the fuse holder).
Replace a blown fuse with one that has the fuse rating listed in
Replace the top cover.
For continued protection against fire or unit damage, replace the fuse
only with the type and rating listed. If the unit repeatedly blows fuses,
locate and correct the cause of the problem before replacing the fuse.
Fuse rating
1.6A slow blow, 250V, 5 X 20mm FU-106-1.6
Connections
Keithley Instruments part no.
Table 2-4.
Keithley Instruments part no.
S46-901-01 Rev. C / January 2006
2-11