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Hewlett Packard 5890 Series II Keyboard

The keyboard and display components of the HP 5890 Series II are housed in a single display PCB assembly. Current maintenance philosophy suggests that the display PCB assembly be replaced as a unit, rather then replacing the display PCB, keyboard connector element, etc. individually. Maintenance procedures have been included to allow for the disassembly of the display PCB assembly in the event that the shroud assembly is not available in a timely manner

The Keyboard and Display Board are two boards located on the front of the Electronics Module. The Keyboard plugs directly into the Display Board. The Main Board is mounted inside the right side panel of the instrument and occupies most of the space in the Electronics Module. More importantly, the Main Board contains most of the instrument’s electronics. General Description: The 05890- 60015 PC board is a collection of circuits which allow operation of the 5890 Series II gas chromatograph. The circuits on the new board include power supplies, CPU, A/D converter, D/A converter, clocks and general control circuits.

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