Agilent Technologies 6890 Series Service Manual page 13

Contents
Diagnostics ................................................................................................ 32
Quenching effects ............................................................................. 32
PMT saturation .................................................................................. 32
Detector temperature considerations ............................................ 32
Flame ignition problems .................................................................. 33
Leak testing................................................................................................ 35
Potential leaks areas......................................................................... 35
360 Auxiliary EPC
Theory of operation.................................................................................... 1
External flow restrictor (Type 2 manifold) ..................................... 1
Replacement procedures ........................................................................... 4
Removing the auxiliary manifold (type 1 or type 2) ....................... 4
Installing a type 2 manifold................................................................ 6
Changing an auxiliary channel frit.................................................. 14
400 Mainframe
410 Covers and Fans
Plastic covers .............................................................................................. 1
Metal covers ................................................................................................ 2
Removing the electronics cover................................................................ 3
Removing the detector cover .................................................................... 4
Replacing the detector top cover.............................................................. 6
Removing the pneumatics top cover........................................................ 8
Removing the pneumatics RFI shielding ................................................. 8
Removing the left side cover ..................................................................... 9
Removing the right side cover................................................................. 10
Removing the ALS tray bracket .............................................................. 11
Removing the inlet carrier cover ............................................................ 12
Removing the inlet carrier ....................................................................... 13
Removing the rear covers ........................................................................ 14
Removing the top rear cover ........................................................... 14
Removing the bottom rear cover .................................................... 15
Removing the injection port fan cover................................................... 16
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Contents
Agilent 6890 Gas Chromatograph Service Manual
Jun 2001