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4-2
Calibration and Adjustment
Introduction
The only procedure available outside of the factory environment is the calibration chart, which can be printed out and
used to determine if the top margin must be adjusted. This procedure is used to adjust the top margin when performing
a copy function. It is performed at the factory before shipment and should never need readjusting.
Print Calibration Chart
WARNING: This procedure should only be accomplished under the direction of a trained HP support agent.
Do NOT perform this procedure unless directed to do so by the agent.
The distance between the page detect sensor and the location of the scanner will vary between machines due to parts
tolerances. This variation affects the top scanning margin. The scanner position calibration will adjust the top margin.
A Calibration Chart is used for this procedure and contains the following features:
D A check to see if the calibration is successful or needed
D Instructions on how to perform the calibration
D Calibration scale used to select the correct parameter value
To check if a calibration is needed, first print the Calibration Chart. Then cut the top of the chart along the dotted line.
Set the HP OfficeJet Series 300 copy reduction setting to 100%. Make one copy of the chart by feeding the top end first
into the document feeder. If the hour-glass printed on the chart is either completely visible or not visible at all, a
calibration is needed. Ideally, exactly one-half of the hour-glass will be visible. Detailed instructions are provided in
the following paragraphs. A sample chart is provided following this procedure.
To print a calibration chart, you must enter the Service and Factory Menu. There are two methods that can be used to
access the Service and Factory Menu:
1. Press the * and 7 buttons simultaneously while powering on the HP OfficeJet Series 300.
2. From the “Enter Header Number” display, first use the Backspace button to erase the currently displayed header
number (if present), then press the Redial/Pause, *, Redial/Paus, 2, 3, 2 and Enter/Save buttons in sequence. Press
the Menu button and scroll to the Service and Factory Menu.
Once the Service and Factory Menu has been accessed, it will remain part of the main menu structure until the HP
OfficeJet Series 300 is powered OFF. Cycling the power OFF and then ON will remove the Service and Factory
Menu from the display and return to the regular user menu.
The same method used to navigate and select user menu functions is also used for the Service and Factory Menu. A
full description of the Service and Factory Menu is provided in chapter 5 of this manual.