HP 750 User Manual
Page 220
10-22
C4705-90000
Product History and Service Notes
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.