Rectification Of Faults; Maintenance - Conrad VC-222 Bedienungsanleitung

Rectification of faults

With the Digital Multimeter VC222 you have acquired a new-gene-
ration measuring instrument built to the latest technological stan-
dards. However, faults can occur. Because of this, the following
describes how some of these problems can be resolved by the
user relatively easily:
Problem Possible solution
No display Is the instrument switched on?
Are the batteries exhausted?
Auto power off? => press HOLD button
Is the rotary switch set to an "in-bet-
ween" position (not indented)?
no current measurem. Check the 400 mA current
possible measurement range fuse
Observe the safety information without fail!
Except where this can be performed manually, live
parts may be exposed when opening covers or re-
moving components. Connection points may also
be live. Before any adjustment, maintenance, repair
or replacement of components or assemblies, if it is
necessary to open the unit, it must be disconnected
from all voltage sources and circuits. If adjustment,
maintenance or repair is subsequently required on
the opened unit while it is live, these must only be
performed by a specialist familiar with the associa-
ted hazards and relevant regulations (VDE-0100,
VDE-0701, VDE. Capacitors in the unit may still be
charged even when it has been isolated from all
voltage sources and circuits.
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Maintenance

Changing a fuse is described under "Safety information". To clean
the unit and the display window, use a clean, lint-free, anti-static,
dry cleaning cloth.
Do not use any carbonaceous cleaning agents or
petrol, alcohol or similar for cleaning. They may
attack the surface of the unit. Additionally, the
fumes are explosive and damaging to health. Do not
use any sharp-edged tools, screwdrivers, metal
brushes or similar for cleaning..
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