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Print Quality
HP Designjet 4500 Printer Series Service Manual
Diagnostic Part 3: Printhead Problems
If part 2 revealed a Printhead problem, then the purpose of part 3 is to
identify exactly which Printhead is faulty. Each rectangle in this part is
identified with the number of the Printhead that produced it.
If ALL the Printheads are printing perfectly, part 3 of the Diagnostic print will
look like this:
The following example shows an imperfect Printhead (number 4) that is still
suitable for printing. It is not damaged enough to warrant a replacement
because the Printer can compensate for a number of faulty nozzles.
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