HP designjet l65500 Manuale Di Servizio

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Troubleshooting

In order to find if your problem is caused by malfunctioning nozzles or by a malfunctioning drop detector, 

follow these troubleshooting steps.

1.

Check that the service station is well calibrated. Move the carriage by initiating a ‚clean ink deposit‚ 

(from the Front Panel, maintenance menu > clean ink deposit. From the window, look at the 

drop detectors. If the thin lines are well centered versus each drop detector, the service station is well 

calibrated. If one line is nearly on the edge of the Drop Detector, perform a 5.3.4 Service Station 

calibration  page 354.

2.

Check the priming troubleshooting refer to the Maintenance and Troubleshooting Guide.

3.

Print the nozzle check from the service menu (service prints -> carriage menu -> nozzle 

check) in more than 6 pass without error hiding to help see intermittent nozzle outs), or from the 

IPS, print the 'PH alignment check' (print in 1 pass without error hide) or the 'check PH nozzle' (print 

in 4 pass, without error hiding enable)  page 245.

4.

Perform the 1.5.2 Force Drop Detection utility  page 410 to see the number of nozzle outs. Does 

the number of nozzle outs match the number o f nozzle outs in the service prints? If these numbers 

are very different, the drop detector does not work correctly.

5.

If the problem is the drop detector, perform the 4.5.1 Drop Detector Calibration  page 430.

6.

Also perform the 5.3.3 Drop Detector diagnostic test  page 352.

7.

If the drop detector continues to fail after the drop detector calibration, replace the Drop Detector 



8.

It is possible to reset the table of the nozzle outs, forcing the printer to consider that all the nozzles 
are working by performing the service test  '1.5.5 Reset Error Hiding ' page 413. 

(The following contains very important troubleshooting for known issues and are documented here as 

'wrinkles', 'media edge holder with ink', ' aerosol inlet with dust', 'how to clean the PH connector'etc)

Refer to the Maintenance and Troubleshooting guide: 

•

Chapter 6 ‘Troubleshoot substrate issues’.

•

Chapter 7 ‘Troubleshoot print-quality issues’. 

This is guide is available on the www.hp.com -> support & Drivers; L65500, LX600 or LX800, click on 

Manuals. 

From IPS 4.0.1, the documentation of the LX series is available online from the IPS (help -> User’s Guide 

and Maintenance & Troubleshooting Guide).

For advance troubleshooting: It is possible to view which nozzles the printer has 

detected are not functioning correctly when printing, by editing the file printer.log, and doing 

a search on 'dead nozzle': the list of nozzle numbers per color will then be available, number 

from 0 to > 5000. After having done a reset error hiding, and print a plot, you will see that 

there are no nozzles out. To view the results from the drop detection, perform two cleanings & 

check, and check that no system error is displayed in the service plot indicating an errorthat 

prevented the drop detection from occuring.