HP 750 - Manual (Page 212)

10-14 C4705-90000 Product History and Service Notes
The Aerosol Phenomena Causing a Servo Shutdown Error
Date: 15 December 1995
Service Note: C3195AĆ03
C3196AĆ03
Supersedes: None
Products: HP DesignJet 750C (C3195A)
HP DesignJet 750C (C3196A)
Serial Numbers: C3195A ESA0000000/ESA5700250
C3196A ESA0000000/ESA5700400
To be performed by: HPĆQualified Personnel
Parts Required:
Part Number Description Qty
C3195Ć60140 Pen Carriage Assembly 1
Situation
During very intensive plot workload (high duty cycle), the aerosol phenomena may appear
inside the plotter as the ink particles are stacking on the carriage rails causing high friction.
This happens with the old type of carriage (with carbon bushings). The result is a Servo
Shutdown error.
Solution
The pen carriage has been reworked to avoid this problem. It now has the new type of
bushings (Aramide type bushings).
Removing and Installing the New Pen Carriage
1 Remove the window ' page 6Ć13.
2 Remove the center cover ' page 6Ć14.
3 Remove the left and right endcovers ' pages 6Ć16 and 6Ć17.
4 Remove the encoder strip ' page 6Ć27.
5 Remove the trailing cable ' page 6Ć36.
6 Slide the carriage to the right side of the plotter.
7 Grasp the carriage rear preload bushing and move the carriage to the right side, free
from the slider rods.