HP Designjet 4500

4-2
Service Tests and Utilities
HP Designjet 4500 Printer Series Service Manual
Introduction
This chapter explains how to use the built-in Service Tests and Service
Utilities and what to do if any of the Service Tests fail.
If possible, always perform a Service Test on the component
that you are about to replace, just to make sure that is the
component that has failed. If the test on that component
passes, there is no need to replace it.
Diagnostics - Self Test
Initialization Sequences
Whenever the Printer is switched ON, it automatically performs a series of
internal self tests and mechanical initialization sequences. If any of the parts
fail, a system error will appear and you should consult Chapter 2 - System
Error Codes.
Phone Support
In certain circumstances, a Call Agent can try to troubleshoot
the Printer by requesting the Customer performs a Service Test
via the phone. Using this process, it can be determined
whether the Printer requires any on-site maintenance.
Remember that the Key combination for the Customer to Enter
the Service Tests and Utilities is different from the one that the
Customer Engineer will use.