General Maintenance 5
5975 Series MSD Operation Manual for MassHunter 157
5 Install the new electron multiplier horn.
6 Close the retaining clip.
The signal pin on the horn must rest
on the outside of the loop in the
contact strip.
Do not put the signal pin on the inside of the loop in the
contact strip. Incorrect installation will result in poor sensitivity or no
signal.
7 Close the analyzer chamber. See “To Close the Analyzer Chamber” on
page 91.
8 Pump down the MSD. See “To Pump Down the MSD in EI Mode” on
page 95.