7-40
CORRECTIVE MAINTENANCE
7.2 REPLACEMENTS
7.2.1 Standard parts
Electrical and mechanical parts
replacements can be obtained through your
local FLUKE/PHIDPS
organization or represenla^ve.
However, many generic electronic components
can be obtained from
other sources. Before purchasing orordering
replacement parts, check the
parts
Ms!
for value,
tolerance, rating, and description.
NOTE: Physica/ $/ze and shape of a component
may af^/nstrument performance, particu/ajiy at
h/gh frequencies. A/ways use d/recf^rep/acemenf components,
un/ess it is known that a
substitute wilt not degrade the instrument's performance.
7.2.2 Special parts
In addition to the standard
electronic components, some special components are
used;
•
Components
,
custom manufactured
or
selected
by FLUKE/P HI LI PS to meet specific
pe
rformance
requirements.
Components that are important for the safety
of personnel.
NOTE: Both type of components
may oniy be replaced by components obtained through your
iocai
FLUKE/PHIUPS organization
or
representative.
7.2.3 Transistors and integrated circuits
Some notes on handling these components:
•
Do not replace or swap semiconductor devices
unnecessarily, because the change may affect the
calibration of the instrument.
-
When a device has been replaced
,
check the circuit that may be affected for proper operation
. See
also the Performance Verification
Procedure in chapters
7.2.4
Static*sensitive components
In tie ScopeMeier the black/yellow ‘'static-sensitive
components” symbol is present (see also figure
7.4). This means that ^is instrument contains electrical
components that can be damaged by
electrostatical discharge. Although
all MOS Integrated circuits incorporate protection against
electrostatic discharge, they nevertheless can be damaged by accidental overvoltages.
Figure 7. 9 Static-sensitive symbol (black/yelio w)
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