White wires to
filament 1
Red wire
to repeller
Brown extractor
wire to extractor
lens
Ion source heater
wires (white)
Figure 13
5977 Series MSD Operation Manual
HTR
REP
FILAMENT - 2
HTR
Feedthrough board wiring
Operating in Electron Ionization (EI) Mode
QUADRUPOLE
RTS
FILAMENT - 1
RTS
SOURCE
Blue wire to
entrance lens
ENTR
LENS
Orange wire to
ion focus lens
ION
FOC
Black wires to
filament 2
Ion source sensor
wires (white)
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