General Maintenance 4
Troubleshooting and Maintenance Manual 119
Maintaining the Electronics
Scheduled maintenance
None of the electronic components of the MS needs to be replaced on a regular
schedule. None of the electronic components in the MS needs to be adjusted or
calibrated on a regular schedule. Avoid unnecessary handling of the MS
electronics.
Electronic components
The primary fuses can be replaced by the operator. All other maintenance of
the electronics should be performed by your Agilent Technologies service
representative.
Electrostatic precautions
All of the printed circuit boards in the MS contain components that can be
damaged by electrostatic discharge (ESD). Do not handle or touch these
boards unless absolutely necessary. In addition, wires, contacts, and cables
can conduct ESD to the printed circuit boards to which they are connected.
This is especially true of the mass filter (quadrupole) contact wires, which can
carry ESD to sensitive components on the quadrupole board. ESD damage
may not cause immediate failure but it will gradually degrade the performance
and stability of your MS.
When you work on or near printed circuit boards, or when you work on
components with wires, contacts, or cables connected to printed circuit
boards, always use a grounded antistatic wrist strap and take other antistatic
precautions. The wrist strap should be connected to a known good earth
Improper use of these procedures could create a serious safety hazard. Improper use
of these procedures could also result in serious damage to, or incorrect operation of,
the MS.
Vent the MS and disconnect its power cord before performing any of these
procedures except adjusting the RF coils.
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