HP 750c Service Manual - Page 112

Adjustments, Calibrations - designjet plus plotter

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Adjustments There are no electrical or mechanical adjustments required on DesignJet 700, 750C, 750C Plus plotters and DesignJet 755CM printers. Calibrations The plotters/printers have several calibration procedures that must be performed under certain conditions. Refer to the table below to determine when calibrations are required. When Required Calibration Drop Detect Line Sensor Carriage is replaced or disassembled Yes Yes Cartridge checking constantly rejects pens Yes No Drive roller assembly is replaced Yes No EdgeĆdetect failures occur No Yes EEROM is cleared (Calibrations to be done Yes Yes in this order) Length of lines drawn by the plotter is not No Yes as specified by the software Main PCA is replaced without restoring the Yes Yes EEROM values Mark Encoder is replaced No No Media is not detected by the line sensor No Yes Plots have consistent banding due to paper No No advance error Service Config Plot XĆmark distance is not No No 500mm ("1mm.); mono on inkjet film Service station is replaced or disassembled Yes No XĆaxis motor/encoder is replaced No No Accuracy Yes No Yes No Yes No Yes Yes No Yes Yes Yes Yes 7-2 Calibrations C4705-90000

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7-2
Calibrations
C4705-90000
Adjustments
There are no electrical or mechanical adjustments required on DesignJet 700, 750C, 750C Plus
plotters and DesignJet 755CM printers.
Calibrations
The plotters/printers have several calibration procedures that must be performed under
certain conditions. Refer to the table below to determine when calibrations are required.
When Required
Calibration
When Required
Drop Detect
Line Sensor
Accuracy
Carriage is replaced or disassembled
Yes
Yes
Yes
Cartridge checking constantly rejects pens
Yes
No
No
Drive roller assembly is replaced
Yes
No
Yes
EdgeĆdetect failures occur
No
Yes
No
EEROM is cleared (Calibrations to be done
in this order)
Yes
Yes
Yes
Length of lines drawn by the plotter is not
as specified by the software
No
Yes
No
Main PCA is replaced without restoring the
EEROM values
Yes
Yes
Yes
Mark Encoder is replaced
No
No
Yes
Media is not detected by the line sensor
No
Yes
No
Plots have consistent banding due to paper
advance error
No
No
Yes
Service Config Plot XĆmark distance is not
500mm (
"
1mm.); mono on inkjet film
No
No
Yes
Service station is replaced or disassembled
Yes
No
Yes
XĆaxis motor/encoder is replaced
No
No
Yes