EC-JET EC-JET500 - Problem Solving; Problem Solving - Print Samples

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58 User Manual
Troubleshooting
Problem Solving
This sub-section describes the faults identified in the previous sub-section “Identifying Faults”.
For each fault, identified by a fault code (FC) number, procedures are given for confirming the
presence of the fault, and actions necessary to rectify the fault.
Fault codes not referenced in this manual are faults that can only be rectified by a Service Engineer.
Problem Solving - Print Samples
FC05 Gutter Clipping
Diagnosis
This fault is also known as “gutter catch” and is similar to the associated problem of Printhead Cover
Catch. The problem occurs when the least deflected drops clip the gutter and are thus not printed.
If the jet is misaligned on the gutter, the least deflected drops may catch the edge of the gutter. This
will cause the loss of the drops from the top of the print pattern.
As printing continues, the ink will build up on the gutter edge and the print loss will increase,
sometimes leading to deflector plate shorting and EHT failures.
The following diagram illustrates the problem:
This print sample shows gutter clipping, resulting in loss of the top part of the print.
Cause and Cure
Check the EHT settings (see - “Changing the System Setup”). Check the jet alignment.
FC06 Printhead Cover Catch
Diagnosis
This problem is caused by the most deflected drops catching the edge of the exit slot in the printhead
cover, and thus failing to be printed.
The following diagram illustrates the condition:
EJ94
Misalignment
(anticlockwise
)
This drop obstructed by gutter
PRINT SAMPLE(Gutter clipping)
EJ95