Maintenance
This section contains the information needed to perform periodic and corrective
maintenance on the instrument. The following subsections are included:
Preventing ESD –Generalinformationonpreventing damage by electrostatic
discharge.
Inspection and Cleaning – Information and procedures for inspecting the
instrument and cleaning its external and internal modules.
Repackaging Instructions – Information on returning an instrument for
service.
Removal and Installation Procedures – Procedures for the removal of
defective modules and replacement of new or repaired modules. Also
included is a procedure for disassembly of the instrument for cleaning.
Troubleshooting – Information for isolating and troubleshooting failed
modules. Included are instructions for operating the instrument diagnostic
routines and troubleshooting trees . Most of the trees make use of the internal
diagno
stic routines to speed fault isolation to a module.
Preventing ESD
Befo
re servicing this product, read the General Safety Summary and the Service
Safety Summary at the front of the manual, as well as the following ESD
information.
CAUTION. Static discharge can damage any semiconductor component in this
instrument.
When performing any servic e that requires internal access to the instrument,
adhere to the following precautions to avoid damaging internal modules and their
components due to electrostatic discharge (ESD):
1. Minimize handling of static-sensitive circuit boards and components.
2. Transport and store static-sensitive modules in their static protected containers
or on a metal rail. Label any package that contains static-sensitive boards.
3. Discharge the static voltage from your body by wearing a grounded antistatic
wrist strap while handling these modules. Service static-sensitive modules
only at a static-free work station.
4. Nothing capable of generating or holding a static charge should be allowed
on the work station surface.
5. Handle c ircuit boards by the edges when possible.
MSO70000/C, DSA70000B/C, DPO70000B/C, D PO7000, MSO5000, DPO5000 Series 4–1
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