Epson WF-7620 Series Service Manual

Confidential
Adjustment Details of Adjustments 63
Epson WF-7620 / WF-7610 / WF-7110 Series Revision B
3.2.1.2 CR Timing Belt Tension Check
1. Move the CR Unit back and forth between the 0-digit side and 130-digit side three times.
2. Move the CR Unit to the position on the left of the Ink System on the 0-digit side shown in Figure 3-2.
3. Set the following parameters to the sonic tension gauge:

Weight: 9.9 g/m
 Width: 3.25 mm
 Span: 460 mm
4. Bring the microphone of the sonic tension meter close to the position shown in Figure 3-2.
5. Press the “MEASURE” button of the sonic tension meter and flip the upper of the CR Timing Belt with
plastic tweezers and measure the tension of the belt.

Within the standard range: CR Timing Belt tension measurement is complete.

Out of the standard range: go to Step 6.
6. Measure the belt tension twice in the same way as described in Step 5.

Within the standard range two times in a row
CR Timing Belt tension check is complete.
 Either of the results is out of the standard range
Any of the related parts may be deformed. Replace the Printer Mechanism, and then perform the CR Timing Belt
tension Check again.
Figure 3-2. CR Timing Belt Tension Check
 This printer is designed so that the each tension of the CR Timing Belt fall within the
expected range if you correctly reassemble the unit. However, deformation of any related
part(s) can cause improper tension of the belt. In such case, replace the unit with a new/
refurbished one.
 The standard tension range of the CR Timing Belt: 13 ± 2 N
CR UnitMeasurement position
Within 5 mm
CR Timing Belt

Epson WF-7620 Series Specifications

General

Functions	Print, Copy, Scan, Fax
Max Print Resolution	4800 x 2400 dpi
Automatic Duplex Printing	Yes
Scanner Type	Flatbed, ADF
Max Scan Resolution	1200 x 2400 dpi
ADF Capacity	35 sheets
Wireless Printing	Yes
Display	4.3" Color Touchscreen
Number of Paper Trays	2
Ink Type	DURABrite Ultra pigment ink
Fax Memory	Up to 180 pages
Fax Transmission Speed	33.6 Kbps
Print Technology	PrecisionCore Inkjet
Max Paper Size	13 x 19 inch (A3+)
Connectivity	USB, Ethernet, Wi-Fi, Wi-Fi Direct
Input Paper Capacity	250 sheets
Mobile Printing	Epson Connect, Apple AirPrint, Google Cloud Print
Maximum Scan Area	11.7 x 17 inches
Ink Cartridge Configuration	4 individual ink cartridges (Black, Cyan, Magenta, Yellow)
Print Speed (ISO)	Black: 18 ppm, Color: 10 ppm
Dimensions	22.3 x 19.1 x 13.4 inches