HP Designjet L25500 Printer Series - Maintenance and troubleshooting guide (second edition)

6. Carefully pull the remainder of the roll down and out of the printer.
7. Lower the substrate-adjustment lever, check that there is no substrate left in the printer (especially not
in the curing module), then close and lock the window.
8. Turn on the printer.
9. Reload the roll.
10. If some substrate continues to cause an obstruction within the printer, it can often be cleared by loading
a rigid substrate type into the printer.
11. If you find that you have print-quality problems after a jam, try realigning the printheads. See
Align the
printheads on page 11.
Avoiding substrate jams
Substrate jams may be caused by loading the substrate with too much skew: do not ignore the warning
message that appears during the loading process in this case.
They may also be caused by not enough vacuum suction in the printing zone. If you decide to increase the
suction, do not exceed the following limits: 20 mmH
2
O for banners, 35 mmH
2
O for vinyl, and 50 mmH
2
O for
other substrate families.
The substrate is deformed or wrinkled
If your substrate is deformed or wrinkled by the drying and curing process, change the temperature settings
before printing the next job, and advance the substrate, using the Move Substrate key on the front panel, so
that the next job will be printed on undamaged substrate.
If the problem appears only at the beginning of the print, try the following suggestions.
●
Disable the automatic cutter.
●
Go to the front panel and select the
icon, then Substrate handling options > Extra bottom margin.
Set the margin 100 mm. If that is not enough, try 200 mm. This extra margin will apply only to jobs that
start printing when the printer is idle and when the cutter is disabled.
●
Decrease the warm-up drying temperature in steps of 5°C, without reducing it below the drying
temperature.
The automatic cutter does not work
The automatic cutter is disabled when the take-up reel is in use. To use the cutter, disable the take-up reel on
the front panel by selecting the
icon, then selecting Take-up reel > Disable take-up reel.
Also check that the cutter is enabled: select the
icon, then Substrate handling options
.
NOTE: The cutter is automatically disabled for some of the heaviest substrate types, which it cannot cut.
Take-up reel substrate jam
If the substrate is severely damaged on the take-up reel spindle, do not use the printer's cutter to cut and
remove the substrate. Instead, cut the substrate manually as close as possible to the printer window, then
remove the roll.
ENWW The substrate is deformed or wrinkled 33