Pg Adjustment - Epson WF-5690 Series Service Manual

Epson WF-5690/4640/4630/5620/5190/5110 series

3.2.4 PG Adjustment

This section describes the procedure for the platen gap (PG) adjustment.
When performing the PG adjustment, make sure of the following.
 Move the Carriage Assy by pulling the Timing Belt.
 Be careful not to damage the nozzle surface of the Printhead with the thickness gauge.
 Be careful not to damage the PF Scale when removing/installing the PG Cam Left.
 The PG position of this printer can be set to four points, from PG 1 to PG 4. Perform the
PG adjustment with the PG position set to PG 1.
 The standard range of the PG and the adjustment pitch are as follows.
• Standard: 1.5 ± 0.0.5 mm (PG position: PG 1)
• Adjustment pitch: 0.05 mm (distance between notches on the PG Cam)
 When performing the PG adjustment, install the Printhead to the Carriage Assy, and
remove the following parts beforehand.
• Exterior parts
• Main Board Unit
• Metal Plate Left
• CR Cover
Tools
 Thickness gauge: 1.37 mm (x2), 1.47 mm (x2)
 Teflon Tape: Commercial item (thickness: 0.08 mm)
Adjustment
Position PG (mm)
PG 1 1.50
PG 2 1.85
PG 3 2.50
PG 4 3.00
Printing plain paper/EPSON special paper, PG adjustment
Select when PG 1 is too narrow, printing envelopes/matte paper
Select when PG 2 is too narrow
Printing envelopes
Details of Adjustments
Application
Revision D
67
Confidential