Epson WF-C5790 Service Manual page 485

EPSON WF-C5790/WF-C5790a/WF-C5710/ET-8700/WF-C5210/WF-C5290/WF-C5290a
Printhead
Ink Tube Connector
Make sure to clean the Ink tube joint part of Ink Supply Unit by using the Cleaning
stick, because perform the Ink Leak Check correctly.
 If ink is remained to ink tube joint part of Ink Supply Unit, Ink Leak Check can not perform
correctly. Therefore cleaning the ink surely.
 Replace the seal joint head with the new one because it cannot be reused.
 Check the seal joint head is not double-installed.
 Check the seal joint head is inserted all the way.
 Check the foreign object does not adhere on the seal joint head.
Disassembly/assembly
Seal Joint Head
Wiping area
Disassembly/Reassembly Procedures
Printhead

Types of Ink Leak Measurement Jig
Part Name Part Code
1684353
LEAK TESTER
SHEET FRONT
1684354
LEAK TESTER
SHEET REAR
90°
In this product, Ink Leak Check is necessary to prevent the ink leakage due to
assembly mistake.
Therefore, make sure to install the ink leak measurement jig when installing the Ink
Tube to Printhead.
Before using the Leak Check Jig, push the ink leak measurement jig along the folds
until the fold angle become 90 degrees.
Revision A
Photo Remark
Smoked
Face
10mm
Smoked
Face
15mm
Ink Leak Measurement Jig
90°
Confidential
485