Replacing The Pneumatics Board - Agilent Technologies 6890 Series Service Manual

Gas chromatograph

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Power/Electronics Replacement

Replacing the pneumatics board

Before proceeding, turn off the main power switch and unplug the power cord.

Make sure you are properly grounded with an ESD strap before continuing.

The electronic pneumatic controller printed circuit board is located on the

back of the instrument underneath the inlet and detector pneumatics

Unclip any inlet/detector module connectors from the EPC board.

Unclip the ribbon cable from the main board and thread it back up

through the slot towards the EPC board.

Unscrew the two Torx T-20 screws on the EPC board bracket and slide

the bracket and board out of the GC.

Figure 430-11

Removing the screws from the EPC board bracket

Agilent 6890 Gas Chromatograph Service Manual

6890a 6890 plus