HP designjet l65500 Manuale Di Servizio
Tr
ou
bles
hooting
240
Troubleshooting
Read a Service Print
Substrate expansion plot
Description
The substrate expansion plot allows you to identify the level of media expansion for a given substrate. For
more information regarding media expansion and potential solutions for this problem, refer to the
Maintenance and Troubleshooting guide.
Plot
Read the plot
1.
Calculate the media expansion value using the formulas.
•
Aleft - Aright = media expansion
•
Cleft - Cright = media expansion
2.
Use the following tables to interpret the media expansion values.
3.
If you have a media expansion problem that must be solved, refer to the Maintenance and Trouble-
shooting guide.
Pen to Pen Alignment along the scan axis (scan axis encoder strip)
Description
This plot shows the pen-to-pen registration along Scan Axis. This error is revealed by means of an
interference or vernier pattern that spans the whole Scan Axis of the printer. In fact, for technical reasons
the plot is limited to 70 (or to the media width, whichever is smaller).
Pattern A values
Pattern C values
Image Quality
Less than or equal to 8
Less than or equal to 4
No noticeable problems
Less than or equal to 14
Less than or equal to 7
Minimum viewing 1 meter
Greater than 14
Greater than 7
Minimum viewing 5 meters
A
C
Pattern A
Pattern C