EC-PACK EC-JET 2000, Manual

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User Manual The1.1 version of 2018 Guangzhou EC-PACK CO.LTD
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diagnosis until all faults have been identified and rectified. Only when all faults have been
eliminated, and the printer is operating correctly, has the fault diagnosis been completed.
The “Identifying Faults” sub-section includes lists of symptoms (by print sample and by
description), and gives references to fault codes which identify the particular type of fault.
The “Problem Solving” sub-section provides problem solving instructions for each fault code
number, and defines checks, adjustments and repair procedures for all the faults identified in
“Identifying Faults”. These procedures explain how to check whether the fault is present and how
to rectify it.
Use the following list of action points to approach fault diagnosis in a logical way:
●
If possible, ask whoever found the problem to describe it in detail, including any action
taken.
●
Do not jump to conclusions. Take the time to examine the printer carefully. Is there
sufficient ink and solvent? Are there any signs of ink leakage? Are there any loose wiring
connections?
●
Check the Print Status option for any error messages that have been logged.
● Make use of the Diagnostics options to check and record the jet monitoring parameters
of Pressure, Velocity Of Drop, Modulation and Phase. Compare these with the reference
values and identify any out-of-specification measurements.(See “Diagnostics”)
●
Make print samples (if possible) and examine the prints carefully for signs of print
quality problems.
●
Only when all of the symptoms have been noted should an attempt be made to identify
the possible cause of the problem.
10.2. Identifying Faults
Some faults are best identified by the appearance of the print when a sample of the test pattern is
printed. Other faults may not permit a print to be made, or may produce other symptoms such as
fault messages. To accommodate these differences, this sub-section is divided into two parts:
“Identifying Faults by Print Sample” and “Identifying Faults by Symptom”.
10.3. Identifying Faults by Print Sample
This part of the manual is intended to help distinguish between different types of print fault, in
order to identify the possible causes.
There are several ways in which print quality can be affected, and in some cases print quality
problems can be caused by more than one fault. For most faults, it is not difficult to identify the
cause of the problem, but some faults have similar symptoms, making accurate diagnosis a little
more difficult. For example, a low modulation problem can give similar symptoms to high
viscosity.
In cases where the cause of the print fault is not immediately obvious from the print sample,
secondary symptoms should always be sought that will help to distinguish between the possible