Agilent Technologies 5975C TAD VL MSD Troubleshooting And Maintenance Manual page 273

HED power supply, 224
High electron multiplier voltage in CI
MSD, 79
High energy dynode. See HED
High vacuum gauge
installing, 117
removing, 116
High vacuum pump
difficulty with, 48
not ready, 51
High voltage feedthrough. See HED
feedthrough
Horn, electron multiplier, 211
I
Indicated pressure, 195
Interface socket
reinstalling, 140
removing, 133
Interface tip seal, CI
installing, 164, 166, 167,
Interfacing to external devices,
start run input, 229
system ready signal, 228
Ion focus, 206
Ion source, 200
body, 200
cleaning, 133, 135
drawout plate and cylinder,
drying cleaned parts, 138
entrance lens, 207
filament care, 205
filament, reinstalling, 144
filaments, 204
heater, 213
heater and sensor, reinstalling,
heater and sensor, removing,
ion focus lens, 206
magnet, 206
parts that should not be cleaned,
reassembling, 135, 138, 140,
removing, 118
repeller, 206
Ion source, CI. See CI ion source
K
KF seals, 182
5975 Series MSD Troubleshooting and Maintenance Manual
L
LAN (I/O) connector,
LAN/MS control card,
interfacing to external devices,
RAM on,
remote control processor,
Line voltage
symptoms of incorrect or missing, 31,
43
Local Control panel,
Log amplifier. See Signal amplifier
Low sensitivity
at high masses,
general,
Low signal-to-noise ratio in CI MSD,
Low voltage (ac-dc) power supply,
Lubricating
side plate O-ring,
M
169
m/z,
208
228
m/z 14 and 16, symptoms of a large air
leak,
m/z 18, 28, 32, and 44, symptoms of an air
leak,
m/z 502, low or decreasing abundance
of, 40
Maintenance,
206
analyzer,
avoiding dangerous voltages during,
calibration vial, removing,
CI calibrant vial refilling,
CI gas purifier replacing,
CI interface tip seal installing, 164,
166, 167,
147
CI ion source cleaning,
145
CI MSD,
cleaning reagent gas supply
tubing,
135
dangerous voltages,
142
dangerously hot parts,
EI calibration valve, refilling,
EI calibration vial, refilling,
EI calibration vial, reinstalling,
electron multiplier horn, replacing,
electronics,
fan, high vacuum pump, replacing,
226
223
228
223
228
13
41
37
74
224
118
39
39
83 to 162
131
109
169
167
169
164
163
168
85
86
113
112
112
151
157
filament, reinstalling,
foreline pump in CI,
foreline pump oil, draining,
foreline pump, refilling,
GC/MSD interface,
GC/MSD interface heater and sensor,
reinstalling, 156
GC/MSD interface heater and sensor,
removing, 154
ion source heater and sensor,
reinstalling, 147
ion source heater and sensor,
removing, 145
ion source, reassembling, 135, 138,
140, 142
ion source, removing,
mass filter (quadrupole),
mass filter heater and sensor,
reinstalling, 149
mass filter heater and sensor,
removing, 148
methane/isobutane gas purifier,
micro-ion vacuum gauge,
reinstalling, 117
micro-ion vacuum gauge,
removing, 116
primary fuses, replacing,
reconnecting the MSD to the GC,
refilling the CI calibrant vial,
RF coils, adjusting,
safety during, 85
85
schedule, 84
separating the MSD from the GC,
side plate O-ring, lubricating,
Malfunctions. See Symptoms of
malfunctions
Mass assignments, incorrect,
Mass filter
219 width, 209
amu gain, 209
amu offset, 209
dc polarity, 210
dc voltage, 208
difficulty with the mass filter
electronics, 47
heater, 213
heater and sensor, reinstalling,
heater and sensor, removing,
114
maintenance, 210
Index
144
166
98
100
153
118
210
167
161
105
169
159
101
118
39
149
148
273