Epson WF-4740,WF-4730,WF-4720, EC-4040, EC-4030, EC-4020 Series Service Manual Page 121-143

EPSON WF-4740/EC-4040 Series / WF-4730/EC-4030 Series / WF-4720/EC-4020 Series Revision D Mechanism Adjustment / Check 121 Confidential 3.3 Mechanism Adjustment / Check 3.3.1 Checking the Platen Gap This section describes the procedure for checking the platen gap (PG). Tools Thickness gauges for PG check: 1.60 mm gauge, 1.24 mm gauge Teflon tape: Commercially available product (thickness: 0.08 mm) 3.3.1.1 Preparation This section describes how and what to prepare for the preparation before starting the PG check. Modification of the thickness gauges The standard range of the PG is as follows: Standard: 1.50 0.18 mm The Printhead of this printer has an integral structure of the Printhead Cover and Printhead nozzle surface. Therefore, if the thickness gauge touches the nozzle surface in the same way as performed in the traditional procedure, the nozzle surface may be damaged. When checking the platen gap, make sure to apply Teflon tape (thickness: 0.08 mm) on all the thickness gauges used for checking the Platen Gap in advance. Use commercially available Teflon tape of 0.08 mm in thickness. When applying Teflon tape on the thickness gauges, make sure no bubbles or foreign material remain under the tape. [Bubbles] [Foreign material]
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Epson WF-4740 Series Service Manual Page 121-143
Epson WF-4730 Series Service Manual Page 121-143
Epson WF-4720 Series Service Manual Page 121-143
Epson EC-4040 Series Service Manual Page 121-143
Epson EC-4030 Series Service Manual Page 121-143
Epson EC-4020 Series Service Manual Page 121-143