Agilent Technologies HP 8719D Service Manual page 434

Bl Fan Assembly
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ESD (electrostatic discharge) grounding wrist strap
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Removal
1. Remove the rear panel (refer to "Rear Panel Assembly" in this chapter).
2. Remove the four screws (item 1) that secure the fan and fan cover to the
rear panel.
Replacement
1. Reverse the order of the removal procedure.
Note
The fan should be installed so that the direction of the air flow
is away from the instrument. There is an arrow on the fan
chassis indicating the air flow direction.
1438 Assembly Replacement and Pest-Repair Procedures