HP Designjet 700 Service Manual - Page 220
Air Flow from the Fan can Cause Spray and Misdirection
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Air Flow from the Fan can Cause Spray and Misdirection Date: 1 February 1996 Service Note: C3196AĆ05 C3198AĆ03 Supersedes: None Products: HP DesignJet 750C (C3196A) HP DesignJet 750CM (C3198A) Serial Numbers: C3196A ESA0000000/ESA4508541 C3198A ESA0000000/ESA4508541 To be performed by: HPĆQualified Personnel Parts Required: Part Number Description Qty C3195Ć40066 Fan Deflector 1 Situation Air flow from the fan can cause spray and misdirection, generating a vertical band in certain prints on glossy media. The band is on the left side and has a width of about 10 centimeters or 3.94 inches. It is only visible in certain area fills and shows up as: D Hue change. D Increase of the coalescence problem. D Increasing the horizontal banding. The problem affects only EĆsize plotters. Solution A new part has been designed to be installed in the YĆyoke. The YĆyoke is the metallic part mounted on the chassis between the two slider rods. This part, called a fan deflector, deflects the air coming from the fan so that it does not affect the print quality. The procedure to install the fan deflector is as follows: 1 Open the window. 2 Identify the YĆyoke, on the chassis, between the slider rods and behind the carriage belt. 10-22 Product History and Service Notes C4705-90000