Identifying Faults; Identifying Faults By Print Sample - EC-PACK EC-JET 1000Pro Manual

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.

Identifying Faults

10.2
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".

Identifying Faults by Print Sample

10.3
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 causes. In the
example above, the current modulation would need to be checked, and the pressure, the Velocity Of
Drop, and the operation of the ink system components investigated. These additional pieces of
information will then enable you to decide which of the possible causes is the reason for the print fault.
The following list classifies faults by the appearance of the print samples they produce. The list shows
print samples of the standard test pattern which can be compared with samples taken from the printer
under investigation. Below each sample, or set of samples, is a brief description of the fault symptoms.
Also provided are the possible causes of the fault and a reference to a particular fault code number in the
Guangzhou EC-PACK Packaging Equipment Co., Ltd.
EC-JET 1000Pro Continuous Inkjet Printer
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