Maintenance
R&S
®
OSP
305
User Manual 1178.7100.02 ─ 05
12
Maintenance
The product does not require regular maintenance. It only requires occasional clean-
ing. It is however advisable to check the nominal data from time to time.
12.1
Replacing Fuses
See also
If the R&S
OSP does not start, it is possible that a blown fuse is the cause. The prod-
uct is protected against excess AC supply voltage or voltage peaks by two fuses,
labeled F1 and F2. The fuses are located in the fuse holder next to the power switch
on the
Fuse type IEC60127 T5.0H / 250 V
Using the wrong fuse type can cause severe instrument damage or even personal
injury.
To avoid this risk, replace the fuses only with the same type, IEC60127 T5.0H / 250
V.
These time-lag fuses are specified for 5.0
A and comply with all nominal AC supply vol-
tages specified in the data sheet.
You can order these fuses from Rohde
&
Schwarz, order number 0099.6735.00.
To change the fuses
1.
WARNING!
The fuse is part of the main power supply. Handling the fuse while the
power is on can lead to electric shock.
Before changing the fuse:
a) Shut down the switch unit, see
b) Set the power switch to position [0] (
c) Disconnect the power cable.
2. Insert a small screwdriver (or similar sharp tool) into one of the holes that are
.
Replacing Fuses