W46 Cable Checkout
4-56 72A-1230 Rev. F
July 22, 2005
Replacing M4100 Components
Instructions are provided here for the replacement of M4100 internal,
replaceable components for the purpose of diagnosing malfunctions or
eliminating problems.
NOTE It is important to follow the systematic troubleshooting guidelines in
Chapter 4 and elsewhere in Chapter 6 before replacing any M4100
component. Forethought will reduce the difficulty and time required to
fix a problem.
NOTE If a replacement component is packaged in an anti-static bag, do not
remove it from the bag until instructed to do so. Return all failed
components to Doble.
Replacement of an internal M4100 component requires removal of the
instrument’s covers and may also require removal of the internal card cage
cover. Follow the instructions in ”Accessing M4100 Components”
on page 4-46 to accomplish these initial steps. That section also includes
photographs to assist in identifying each component.
Locate the section that applies to the particular M4100 component to be
replaced, then follow its instructions.
NOTE Remove any loose screws that may have fallen into the instrument during
a replacement procedure.
DANGER After successfully replacing any M4100 component, also replace all the
covers that were removed prior to operating the instrument. Failure to do
so will expose the operator and other persons in the vicinity to lethal
voltages, potentially resulting in injury or death from electrocution.
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