HP designjet l65500 Manuale Di Servizio

 Troubleshooting

259

Note that this table does not contain the bidirectional printmodes. The bidirectional printmodes are 

identified when the cell in the column Max-Detail is set to Off.

•

System errors: the report is grouped into 2 types: severe (stopper, requiring to restart the unit) and 

warning/silent. All system errors are documented within the chapter 3 of this service manual. 
For each error, the information about the Internal Code and Line is mainly for escalation purpose. 

But all the other information should be used when troubleshooting an error: 

When looking at the date and substrate usage (date and total quantity of media at the moment of 

the error), you can know the occurrence of the issue (happening each date? each week? Each x qty 

of media? …). 

One important item for the severe system errors: in some cases, just after a specific system errors, 

when the printer begins to switch off, a second system error is generated one or different 79:04 

system errors, and in this case, the customer will call the support saying that the 79:04 is being 

displayed. In this case, it is really important to look at the service plot, and check if there is no 

previous system error causing the last 79:04 system error. How to detect it? When the date and the 

Substrate usage have not changed between the specific system error and the 79:04 system error. 

In the example above, you can see that the 16.8:12 (system error around curing temperature which 

can not be maintained) generated 3 different 79:04 system errors (same date, same media usage).