Agilent Technologies 5975T LTM GC/MSD, Руководство по устранению неисправностей и техническому обслуживанию

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Troubleshooting and Maintenance Guide 5
Relative abundance of m/z 502 is less than 3% 56
Spectra look different from those acquired with other MSDs 57
High mass sensitivity is poor 57
Pressure Symptoms 59
Foreline pressure is too high 59
Analyzer chamber pressure is too high (EI operation) 59
Foreline pressure is too low 60
Analyzer chamber pressure is too low 60
Gauge controller displays 9.9+9 and then goes blank 60
Power indicator on the gauge controller does not light 60
Temperature Symptoms 61
Ion source will not heat up 61
Mass filter (quad) heater will not heat up 61
GC/MSD interface will not heat up 62
Inlet will not heat up 62
LTM column module will not heat up 62
Heated guard column enclosure will not heat up 63
Analyzer Error Messages 64
Difficulty in mass filter electronics 64
Difficulty with the electron multiplier supply 64
Difficulty with the fan 64
Difficulty with the HED supply 65
Difficulty with the high vacuum pump 65
High foreline pressure 65
Internal MS communication fault 65
Lens supply fault 66
Log amplifier ADC error 66
No peaks found 66
Temperature control disabled 66
Temperature control fault 66
The high vacuum pump is not ready 67
The system is in standby 67
The system is in vent state 67
There is no emission current 68
There is not enough signal to begin tune 68
Air Leaks 69
Contamination 70
4 Not Ready Symptoms
Instrument Never Becomes Ready 74
Flow Never Becomes Ready 75