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РМ 2522
71
Х. Maintenance and servicing
Digital multimeter PM 2522 requires no maintenance because the instrument contains no compo-
nents which are subject to wear.
However, to ensure reliable and faultless operation, the instrument should not be exposed to
moisture, heat, corrosive vapours and excessive dust.
X-l.
SERVICE HINTS
If service work must be performed, the following points should be taken into account to avoid
damage of the instrument.
- |n case of measurements on a switched-on instrument proceed carefully to avoid short-circuits
by means of measuring clips or measuring hooks.
- For soldering use absolutely acid-free soldering tin.
- For all soldering work on the printed circuits boards, use a miniature soldering iron (35 W max.)
with a tin-cleaner or a vacuum soldering iron.
X-2.
TROUBLE-SHOOTING
On the printed wiring board 9 test points and 4 jumpers are introduced at the component side
(Fig. 23, page 68)
General conditions:
- nominal mains voltage (220 V, 50 Hz)
- voltages with respect to circuit zero (terminal "0"), unless otherwise stated.
The data given represent the properties of an average instrument and may serve as a guide only.
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