Cabletron Systems KBU 64, Руководство пользователя

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The Front & Rear Panel Descriptions
80-10100000-09 3–11
The selector is marked with the nominal value for each of the four
ranges defined above, the selected voltage range is visible through the
compartment lid.
To gain access to the voltage selector or fuse:
1. First remove the mains supply.
2. Using a medium size flat bladed screwdriver, lever open the
compartment that holds the selector drum and fuse.
3. With the compartment open, remove the selector drum and re-fit it in
the desired position. The selected supply voltage setting will show
when the cover is replaced.
4. To replace a fuse, lever the holder forward and replace the fuse with
one of the correct rating (see below) then slide the holder back into
the casing. make sure that the arrow points in the direction shown in
Figure 3.4 .
Always check that the fuse is of the correct rating and is the anti-surge
type, do not automatically assume that the blown fuse which you are
replacing was the correct current rating and type!
The maximum power consumption of the unit is 25 VA.
Mains inlet fuse ratings (Anti-surge type, 20mm long) are:
a) 100V nominal 250mA
b) 120V nominal 250mA
c) 220V nominal 125mA
d) 240V nominal 125mA.
CAUTION: FOR CONTINUED PROTECTION AGAINST RISK OF
FIRE, REPLACE ONLY WITH SAME TYPE AND RATING OF
FUSE.
POUR EVITER LES RISQUES D'INCENDIE NE REMPLACER QUE
PAR UN FUSIBLE DE MEME TYPE ET DE MEME AMPERAGE.
3.7 Front Panel Description
Figure 3.1 shows the front panel of your KBU 64, which carries signal
indicators for each of the Kilostream and user interface connectors; a
mains power indicator, status indicators for the ISDN channels; an alarm