Epson ET-4550 Service Manual page 43

E E p p s s o o n n E E T T - - 4 4 5 5 5 5 0 0 , , L L 6 6 5 5 5 5 / / 6 6 5 5 6 6
Ink Tank Housing Lower Ink Tank Housing Lower
Ink Tank Housing Lower Ink Tank Housing Lower
Hook Hook
· ·
C.B.P-TITE SCREW 3x10 F/ZN-3C (6 ± 1 kgf C.B.P-TITE SCREW 3x10 F/ZN-3C (6 ± 1 kgf cm) cm)
Note: Note: Ink Supply Tank in photo above is not charg Ink Supply Tank in photo above is not charg ed with ink. ed with ink.
Remove the Ink Tank Housing Lower as follows: Remove the Ink Tank Housing Lower as follows:
1. 1. Remove th Remove the screws (x 2 e screws (x 2) that secur ) that secure the Ink Tank H e the Ink Tank Housing
Lower. Lower.
2. 2. Disenga Disengage the ho ge the hooks (x 2) oks (x 2) and rem and remove Ink Ta ove Ink Tank Hous
Lower. Lower.
Cap Tank Cap Tank
3 mm or less 3 mm or less
When connecting the Cap Tank to the Ink Tank Housing Upper, insert each cap fully and make sure the gaps between the end of caps and the Ink When connecting the Cap Tank to the Ink Tank Housing Upper, insert each cap fully and make sure the gaps between the end of caps and the Ink
Tank Housing Upper are 3 mm long or less. Tank Housing Upper are 3 mm long or less.
To prevent damage to Cap Tank, attach it with the knob at an angle of 45 degrees. To prevent damage to Cap Tank, attach it with the knob at an angle of 45 degrees.
D D i i s s a a s s s s e e m m b b l l y y / / R R e e a a s s s s e e m m b b l l y y
E E p p s s o o n n E E T T - - 4 4 5 5 5 5 0 0 , , L L 6 6 5 5 5 5 / / 6 6 5 5 6 6
Ink Tank Housing Upper Ink Tank Housing Upper
Ink Tank Hou Ink Ta nk Housing sing Upper Upper
Hook Hook
· ·
C.B.P-TITE SCREW 3x10 F/ZN-3C (6 ± 1 kgf C.B.P-TITE SCREW 3x10 F/ZN-3C (6 ± 1 kgf cm) cm)
Remove the Ink Tank Housing Upper as follows: Remove the Ink Tank Housing Upper as follows:
1. 1. Rem Remov ove Ca e Cap Ta p Tank nk. .
2. 2. Remov Remove the screws ( e the screws (x 2) that sec x 2) that secure the Ink Ta ure the Ink Tank Housi
3. 3. Diseng Disengage the hoo age the hooks (x 2) and rem ks (x 2) and remove Ink Tan ove Ink Tank Housi
CR Scale CR Scale
CR Scale CR Scale Side view of CR Unit Side view of CR Unit
Black mark Black mark
Slit of CR Encoder Slit of CR Encoder
CR Scale CR Scale
CR Unit CR Unit
  Attach with the black triangle on the upper left corner. Attach with the black triangle on the upper left corner.
  Set through the slit on the CR Encoder. Set through the slit on the CR Encoder.
D D i i s s a a s s s s e e m m b b l l y y / / R R e e a a s s s s e e m m b b l l y y
Paper Stopper Assy Paper Stopper Assy
Paper Stopper Assy Paper Stopper Assy
Extension Spring 1.59 Extension Spring 1.59 Cam Slider Cam Slider
Slider Base Slider Base
Compression Spring1.99 Compression Spring1.99
ousing
If any of the parts of the Paper Stopper Assy 1st/2nd comes off If any of the parts of the Paper Stopper Assy 1st/2nd comes off
when removing it, be sure to reassemble the Paper Stopper Assy when removing it, be sure to reassemble the Paper Stopper Assy
nk Housing ing
1st/2nd as shown above. 1st/2nd as shown above.
Cap Tank Cap Tank
OK OK
NG NG
D D e e
Ink End Sensor Assy / Ink End Sensor Assy /
Ink End Sensor Assy Ink End Sensor Assy
Groove Groove
C.B.P-TITE SCREW 3x8 F/ZN-3C (6 ± 1 kgf C.B.P-TITE SCREW 3x8 F/ZN-3C (6 ± 1
Remove the Ink End Sensor Assy as follows: Remove the Ink End Sensor Assy as follows:
1. 1. Remove th Remove the screws ( e screws (x 4) that secu x 4) that secure the Ink End S
2. 2. Remov Remove Ink End Senso e Ink End Sensor Assy by sli r Assy by sliding it in th
  When connecting the Ink Supply Tank Tube Assy to the Ink When connecting the Ink Supply Tank Tube Assy to the Ink
Supply Tank, insert each tubes fully and make sure the gaps Supply Tank, insert each tubes fully and make sure the gaps
between the end of tubes and the Ink Suppl between the end of tubes and the Ink Suppl y Tank are 1 mm
long or less. long or less.
nk Housing Upper. ng Upper.
  Attach Ink End Sensor Assy while aligning it with the groove Attach Ink End Sensor Assy while aligning it with the groove
k Housing Upper. ng Upper.
on Ink Supply Tank, and secure the assy with the screw (x 4). on Ink Supply Tank, and secure the assy with the screw (x 4).
Holder Cam Assy Holder Cam Assy
Main Frame Main Frame D/E Lever D/E Lever
P P r r o o t t r r u u s s i i o o n n
  When reassembling, align the cam slit on the Holder Cam Assy When reassembling, align the cam slit on the Holder Cam Assy
with the protrusion on the D/E Lever. with the protrusion on the D/E Lever.
  After installing the Holder Cam Assy, make sure that the After installing the Holder Cam Assy, make sure that the
Holder Cam Assy operates normally. Holder Cam Assy operates normally.
D D e e
Ink Supply Adapter Tube Assy / Tube Guide Sheet / Joint / Tube Lock / Tube Clamp Ink Supply Adapter Tube Assy / Tube Guide Sheet / Joint / Tube Lock / Tube Clamp
Paper Stopper Paper Stopper
Groove on CR Unit Groove on CR Unit
Stopper lever Stopper lever
Step 7 Step 7
Hole and Hook Hole and Hook
Step 1, 2 Step 1, 2
45 degrees 45 degrees
Ink Supply Ink Supply
Tank Tube Tank Tube
Black Black
1. 1. Attach Tube Clam Attach Tube Clamp while align it with the mar
2. 2. Attach Tu Attach Tube Lock on
3. 3. Align the holes on Tu Align the holes on Tube Guide Sheet with th
4. 4. With the openi With the opening on Tube Clamp facin
5. 5. Connect In Connect Ink Supply Adapt
6. 6. Engage the holes (x 3) on Tub Engage the holes (x 3) on Tube Guide Sheet wi
7. 7. Connect I Connect Ink Suppl
8. 8. Secure Tu Secure Tube Lock w
t t a a i i l l e e d d D D i i s s a a s s s s e e m m b b l l y y / / R R e e a a s s s s e e m m b b l l y y P P r r o o c c e e d d u u r r e e f f o o r r e e a a c c h h
Ink Supply Tank Ink Supply Tank
Back Back
80 digit side 80 digit side
1 mm or less 1 mm or less
Ink Supply Adapter Tube Ink Supply Adapter Tube
· ·
Ink Supply Tank Ink Supply Tank
kgf cm) cm)
re the Ink End Sensor As ensor Assy. sy.
ding it in the arrow's di e arrow's directio rection. n.
When removing the Printer Mechanism, remove the screws (x 9) shown above. When removing the Printer Mechanism, remove the screws (x 9) shown above.
y Tank are 1 mm
 
Take utmost care not to catch cables/FFCs. Take utmost care not to catch cables/FFCs.
 
Tighten the screws in the order given in the figure above. Tighten the screws in the order given in the figure above.
PF Encoder Sensor/PF Scale PF Encoder Sensor/PF Scale
Holder Cam Assy Holder Cam Assy
PF Encoder Sensor PF Encoder Sensor
G G r r o o o o v v e e
C.B.P-TITE SCREW 2x8 F/ZN-3C (4 ± 1 kgf C.B.P-TITE SCREW 2x8 F/ZN-3C (4 ± 1
  When attaching the PF Scale, if the double-sided tape does not When attaching the PF Scale, if the double-sided tape does not
have sufficient adhesive power or is contaminated, make sure have sufficient adhesive power or is contaminated, make sure
to replace the tape. to replace the tape.
  Make sure to attach the PF Scale correctly perpendicular to the Make sure to attach the PF Scale correctly perpendicular to the
PF Roller. PF Roller.
  After installing the PF Encoder Sensor, make sure that the PF After installing the PF Encoder Sensor, make sure that the PF
Scale is not in contact with the PF Encoder Sensor. Scale is not in contact with the PF Encoder Sensor.
t t a a i i l l e e d d D D i i s s a a s s s s e e m m b b l l y y / / R R e e a a s s s s e e m m b b l l y y P P r r o o c c e e d d u u r r e e f f o o r r e e a a c c h h
Step 8 Step 8
0.5 mm or less 0.5 mm or less
Ink Supply Adapter Tube Ink Supply Adapter Tube
Tube Guide Sheet Tube Guide Sheet
CR Unit CR Unit
0.5 mm or less 0.5 mm or less
Ink Supply Adapter Tube Assy Ink Supply Adapter Tube Assy
Tube Clamp Tube Clamp
T T o o a a d d a a p p t t e e r r
2 2
3 3
C, M, Y C, M, Y
p while align it with the markings (x 3) on Ink Sup kings (x 3) on Ink Supply Adapter Tu ply Adapter Tube Assy as show
be Lock onto Ink S to Ink Supply Ad upply Adapter Tu apter Tube Assy be Assy. .
be Guide Sheet with the dowels (x 2) on Tube Gu e dowels (x 2) on Tube Guide and secure them w ide and secure them with the hooks (x 2).
ng on Tube Clamp facing Tube Guide She g Tube Guide Sheet, attach Ink Sup et, attach Ink Supply Adapter Tub
k Supply Adapter Tube Assy wit er Tube Assy with Adapter and secu h Adapter and secure it with the groov re it with the groove on CR Unit.
e Guide Sheet with the hooks (x 3) on CR Unit, se th the hooks (x 3) on CR Unit, secure them by slid
nk Supply Adapte y Adapter Tube As r Tube Assy with J sy with Joint. oint.
be Lock with the ho ith the hooks (x oks (x 2) on Tub 2) on Tube Guide. e Guide.
P P a a r r t t / / U U n n i i t t
Printer Mechanism Printer Mechanism
Screw (x2) Screw (x2) Printer Mechanism Printer Mechanism
2 2
7 7
8 8
4 4
6 6
PF Scale PF Scale
PF Roller PF Roller
PF Encoder PF Encoder
Sensor Sensor
PF Scale PF Scale
PF Roller PF Roller
· ·
kgf cm) cm)
1 1
P P a a r r t t / / U U n n i i t t
R R e e v v i i s s i i o o
Step 3 Step 3
Tube Guide Sheet Tube Guide Sheet
Tube Guide Tube Guide
Hook Hook
Dowel Dowel
Step 8 Step 8 Ink Supply Ink Supply
Adapter Tube Adapter Tube
Assy Assy
Tube Lock Tube Lock
Joint Joint
Hook Hook Tube Guide Tube Guide
Ink Supply Ink Supply
Tank Tube Tank Tube
Tube Clamp Tube Clamp
Tube Lock Tube Lock
T T o o t t a a n n k
be Assy as shown above. n above.
ith the hooks (x 2).
ply Adapter Tube Assy onto Tube Gu e Assy onto Tube Guide. ide.
e on CR Unit.
cure them by sliding it in the arrow's di ing it in the arrow's direction. rection.
Confidential Confidential
R R e e v v i i s s i i o o
0 digit side 0 digit side
1 1
9 9
3 3
5 5
· ·
C.B.P-TITE SCREW 3x10 F/ZN-3C (6 ± 1 kgf C.B.P-TITE SCREW 3x10 F/ZN-3C (6 ± 1 kgf cm) cm)
· ·
C.B.P-TITE(S- C.B.P-TITE(S-P1) SCREW 3x12 F/ZN-3C (6 ± 1 P1) SCREW 3x12 F/ZN-3C (6 ± 1 kgf kgf cm) cm)
Main Board Assy Main Board Assy
Main Board Assy Main Board Assy
2 2
3 3
· ·
C.B.S-TITE SCREW 3x6 F/ZN-3C (8 ± 1 C.B.S-TITE SCREW 3x6 F/ZN-3C (8 ± 1 kgf kgf
· ·
C.B.S-TITE SCREW 3x6 F/ZN-3C (4 ± 1 kgf C.B.S-TITE SCREW 3x6 F/ZN-3C (4 ± 1 kgf
Tighten the screws in the order indicated in the figure above. Tighten the screws in the order indicated in the figure above.
Confidential Confidential
n n B B
k
4 4 8 8
n n B B
cm) cm)
cm) cm)
4 4 9 9