6-6 Opening the Instrument Case Removal and Replacement
6-14 PN: 10580-00303 Rev. D Model MS20xxB MM
6-6 Opening the Instrument Case
This procedure provides instructions for opening the VNA Master case. With the case opened, the internal
assemblies can be removed and replaced, as described in the rest of this chapter.
Procedure:
1. Remove the battery door and battery as shown in Section 4-4 “Spectrum Analyzer Frequency Accuracy
with GPS On” on page 4-6.
2. Remove the top and bottom bumpers (Figure 6-11) to expose the screw holes on the back of the unit. Pull
on a corner of each rubber bumper to stretch and disengage the rubber from the case.
Caution
Electrostatic Discharge (ESD) can damage the highly sensitive circuits in the instrument.
Repair of damage that is found to be caused by electrostatic discharge is not covered under
warranty.
The VNA Master contains components that can be easily damaged by electrostatic discharge (ESD).
An ESD safe work area and proper ESD handling procedures that conform to ANSI/ESD
S20.20-1999 or ANSI/ESD S20.20-2007 are mandatory to avoid ESD damage when handling
subassemblies or components that are found in these instruments.
Figure 6-11. Removal of Bumpers and Rotary Knob
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