Epson WF-4640 Series User Manual

Epson WF-5690/4640/4630/5620/5190/5110 series Revision D
Confidential
Disassembly/Reassembly 36
Parts/units whose
composition or shape
differ between models
Common parts/units
2.2.3.4 Printhead/Ink Supply Unit
The disassembling and reassembling procedure of the Printhead/Ink Supply Unit requires additional steps before and during the procedure. Therefore, the whole flow from disassembling to reassembling is provided below.
Note: The black arrows ( ) indicate disassembling, and the red arrows ( ) show reassembling.
Flowchart 2-1. Disassembling Flowchart of Printhead/Ink Supply Unit
Printhead / Ink Supply Unit START
Screw type/torque list
Symbol Screw Type Torque
C.B.P-TITE SCREW 2x6-F/ZN-3C 2 ± 1 kgf·cm
C.B.P-TITE SCREW 3x10-F/ZN-3C 6 ± 1 kgf·cm
C.B.S-TITE SCREW 3x6-F/ZN-3C 6
± 1 kgf·cm
C.P.SCREW 3x6-F/ZN-3C 6 ± 1 kgf·cm
C.P.SCREW 3x6-F/ZN-3C 2
± 5 kgf·cm
C.B.P-TITE (P2) SCREW 3x10-F/ZN-3C 6 ± 1 kgf·cm
C.B.P-TITE SCREW 3x8-F/ZN-3C 6
± 1 kgf·cm
C.P.SCREW 2.5x6-F/ZN-3C 2 ± 5 kgf·cm
C.P.SCREW 3x5-F/ZN-3C 6
± 1 kgf·cm
C.B.S-TITE (P4) SCREW 3x8-F/ZN-3C 6 ± 1 kgf·cm
C.B.P-TITE SCREW 2.5x8-F/ZN-3C 6
± 1 kgf·cm
C.B.P-TITE SCREW 2x10-F/ZN-3C 3 ± 0.5 kgf·cm
C.B.P-TITE (S-P1) SCREW 3x12-F/ZN-3C 6
± 1 kgf·cm
C.B.S-TITE (P4) SCREW 3x10-F/ZN-3C 6 ± 1 kgf·cm
C.P.SCREW 3x4-F/ZN-3C 6
± 1 kgf·cm
C.B.EP-TITE SCREW 2.6x17 (B=14) F/ZN-3C 2.5 ± 0.4 kgf·cm
P.W.,2.8x0.5x6.5-F/ZN-3C 3
+ 0.5 kgf·cm
C.P.SCREW 2.5x6-F/ZN-3C 6 ± 1 kgf·cm
C.B.S-TITE(P2) SCREW,3x8-F/ZB-3C 6
± 1 kgf·cm
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
S12
S13
S14
S15
S16
S17
S18
S19
Middle Housing
4
---
(p 38)
S2
CR Cover
---
3
(p 38)
Ink Supply Unit
Grounding Plate
2
2
(p 41)
S3
Ink Supply Unit
6
---
(p 42)
(p 47) (p 50)
S3 S16S19
S16
S3
Printhead
6
---
(p 42)
(p 48) (p 50)
S12 S16S17
S16
Front Housing
Assy
3
2
(p 38)
S2
WF-5190/5110 series WF-5690/4640/4630/5620 series
Go to the next step
Housing Rear
Assy
USB Cover
Ink leak check (p 79)
Checking the platen gap (p 75)
Reassemble the printer and perform the
required adjustment (p 51) .
WF-5190/5110 series WF-5690/4640/4630/5620 series
Panel Assy
---
9
(p 39)
Panel Assy
1
7
(p 39)
S3
WF-5190/5110 series WF-5690/4640/4630/5620 series
Go to the next step
Housing Rear
Assy
FAX Cover
WF-5190/5110 series WF-5690/4640/4630/5620 series
Housing Upper
Assy
5
---
(p 38)
S2
ADF Unit/
Scanner Unit
7
2
(p 44) (p 46)
S2
S3
Releasing the pressure (p 27)
Decompress Pump
Unit
Panel FFC
Head angular mecha adjustment (p 60)

Epson WF-4640 Series Specifications

General

Max Print Resolution	4800 x 1200 dpi
Automatic Duplex Printing	Yes
Scanner Type	Color flatbed / ADF
Max Scan Resolution	1200 x 2400 dpi
Connectivity	USB, Ethernet, Wi-Fi, Wi-Fi Direct, NFC
Functions	Print, Copy, Scan, Fax
Mobile Printing	Epson Connect, Apple AirPrint, Google Cloud Print
Ink Type	DURABrite Ultra pigment ink
OS Compatibility	Windows, Mac
Print Technology	Inkjet
Print Speed (ISO)	20 ppm (black), 20 ppm (color)
Paper Capacity	80 sheets rear feed
Display	color touchscreen
Weight	31.3 lbs