Epson WF-C5790 - Page 153

EPSON WF-C5790/WF-C5790a/WF-C5710/ET-8700/WF-C5210/WF-C5290/WF-C5290a Revision A
Troubleshooting Troubleshooting procedure 153
Confidential
6
Check the nozzle check pattern.
Print nozzle check patterns and check whether there are nozzles missing or deflection.
Nozzle condition is excellent?
Go to step 7
Execute the head cleaning.
The standard cleaning strength depending on the number of
missing nozzles is as described below.
• CL1: No. of missing nozzles (1 to 5)
• CL2: No. of missing nozzles (6 to 20)
• CL3: No. of missing nozzles (21 or more)
* If nozzle missing is not improved, refer to Nozzles missing
(P. 133).
If the symptom continues to occur, go to step 7.
7
Check the Head FFC.
Visually check the FFC terminals to make sure they are not bent up or damaged.
Check if the Printhead FFC is normal.
Replace the Main
Board Assy. (p. 328)
Replace the Head FFC.
Step Check and measure Yes No