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Getting started
R&S
®
LCX Series
20
User Manual 1179.2260.02 ─ 02
Do not use either fuse type other than specified, nor a defective fuse, and never
short-circuit the fuse.
Make sure that you have disconnected the R&S
LCX from the mains.
2. Check the condition of the external bias fuse.
3. If necessary, install the fuse type required for the external bias voltage.
a) Unscrew the fuse holder with a suitable screwdriver.
b) Pull out the fuse holder.
c) Replace the fuse by a fuse of the specified type.
d) Insert the fuse holder into the external bias inlet.
When inserting the fuse holder, press it slightly and tighten it.
Replacing the line fuse
The product is protected by one fuse of type IEC
60127-2/5-T2.0H/250V
(order
no.
0020.7546.00). The externally accessible fuse is part of the IEC socket of
the power supply at the
.
To exchange the line fuse:
1. Check the available supply voltage.
The mains voltage must be within the voltage range as denoted on the instrument.
The label is at the
, on the left of the "AC power" connector and power
switch.
The power supply module covers a wide power supply range and normally does
not require adjustment.
2. If the power supply exceeds the permissible range, contact Rohde
&
Schwarz cus-
tomer service.
3.
WARNING!
The fuse is part of the main power supply. Handling the fuse while the
power is on can lead to electric shock.
If necessary, exchange the fuse required for the supply voltage.
4. Before changing the fuse:
a) Set the switch on the power supply to position [0].
b) Disconnect the R&S
LCX from the power source.
5. Replace the line fuse.
a) Unplug the power cable.
b) Press the plastic lock on the bottom of the fuse holder inwards using a screw-
driver (with a blade width of approximately 2
mm).
A narrow guide on the bottom of the fuse holder denotes the insertion point.
When unlocking the mechanism, compression springs automatically push the
fuse holder outwards.
c) Pull out the fuse holder.
d) Check the condition of the fuse.
Preparing for use
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