Routing Ffcs/Cables - Epson ET-4550 Service Manual

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
Main Board Shield Plate Upper Main Board Shield Plate Upper
Main Board Shield Plate Upper Main Board Shield Plate Upper
2 2
7 7
4 4
6 6 3 3
Bottom Bottom
5 5
C.B.S-TITE SCREW 3x6 F/ZN-3C (4 ± 1 C.B.S-TITE SCREW 3x6 F/ZN-3C (4 ± 1 kgf
C.P SCREW 3x4 F/ZN-3C (4 ± 1 kgf C.P SCREW 3x4 F/ZN-3C (4 ± 1 kgf
C.B.S-TITE SCREW 3x10 F/ZN-3C (4 ± 1 kgf C.B.S-TITE SCREW 3x10 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.
Bottom of CR Unit Bottom of CR Unit
Rail Rail Section B Section B
2 2
80 digit side 80 digit side
Guide Guide
Main Frame Assy Main Frame Assy
Remove the PW Sensor, CR Unit and so on without removing the Main Frame Assy as much as possible when removing them because section B on Remove the PW Sensor, CR Unit and so on without removing the Main Frame Assy as much as possible when removing them because section B on
the Paper Guide Front Assy is deformed when the screw of 80-digits side is removed. the Paper Guide Front Assy is deformed when the screw of 80-digits side is removed.
If removing the Main Frame Assy, remove it as follows. If removing the Main Frame Assy, remove it as follows.
1. 1. Move the CR Unit to the end of the 80-d Move the CR Unit to the end of the 80-digit side, and deta igit side, and detach the rails (x 2) of the CR Unit fro
2. 2. Remove the D/E Leve Remove the D/E Lever by sliding it to the 0-dig r by sliding it to the 0-digit side and alignin
3. 3. Release the C Release the CR Motor cabl R Motor cable from the ho e from the hook on the Main F ok on the Main Frame Ass
4. 4. Release th Release the Head FF e Head FFC from t C from the hook o he hook on the Fro n the Front Fram
5. 5. Remove the scr Remove the screws (x 2) that secu ews (x 2) that secure the Main Frame As re the Main Frame Assy, and remo
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
2.5 2.5 Rou Routin ting FFC g FFCs/c s/cabl ables es
ADF/Scanner Unit ADF/Scanner Unit
ADF/Scanner Unit ADF/Scanner Unit
Grounding wire Grounding wire Scanner FFC Scanner FFC
ADF PE Sensor cable ADF PE Sensor cable
Connect the Scanner FFC, ADF PE Sensor cable, and grounding wire to their Connect the Scanner FFC, ADF PE Sensor cable, and grounding wire to their
connectors on the Main Board Assy as shown above. connectors on the Main Board Assy as shown above.
Scanner Carriage Unit Scanner Carriage Unit
CIS Module CIS Module
Scanner FFC Scanner FFC
Scanner Carriage Unit Scanner Carriage Unit
FFC guide FFC guide
Scanner FFC Scanner FFC Scanner encoder sensor Scanner encoder sensor
  Route the Scanner FFC through the ribs (x 2) on the Scanner Carriage Unit. Route the Scanner FFC through the ribs (x 2) on the Scanner Carriage Unit.
  Route the Scanner FFC through the FFC guide and connect to CN1 on Route the Scanner FFC through the FFC guide and connect to CN1 on
Scanner encoder sensor Scanner encoder sensor
  Connect the Scanner FFC to the CIS Module aligning with the folds on the FFC. Connect the Scanner FFC to the CIS Module aligning with the folds on the FFC.
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
EJ Roller Gear EJ Roller Gear
1 1
EJ Roller Gear EJ Roller Gear
· ·
kgf cm) cm)
· ·
cm) cm)
· ·
cm) cm)
Insert the EJ Roller Gear fully into the EJ Roller to make it secured Insert the EJ Roller Gear fully into the EJ Roller to make it secured
completely. completely.
Main Frame Assy Main Frame Assy
Rear Rear
1 1
Nozzle plate surface of Nozzle plate surface of Printhead
CR unit CR unit
C.B.P-TITE SCREW 3x10 F/ZN-3C (6 ± 1 C.B.P-TITE SCREW 3x10 F/ZN-3C (6 ± 1 kgf
ch the rails (x 2) of the CR Unit from the guides on the Fron m the guides on the Front Frame.
it side and aligning the shape of the lever wit g the shape of the lever with the cutout on the Main Fram h the cutout on the Main Frame Assy.
rame Assy. y. (p 51) (p 51)
nt Frame. e. (p 52) (p 52)
sy, and remove the Main Frame As ve the Main Frame Assy. sy.
D D
ADF Frame Assy ADF Frame Assy
ADF PE Sensor ADF PE Sensor
ADF PE Sensor ADF PE Sensor
cable cable
ADF Frame Assy ADF Frame Assy
Main Board Assy Main Board Assy
H H o o l l e e R R i i b b
Route the ADF PE Sensor cable through the rib and then through the hole on Route the ADF PE Sensor cable through the rib and then through the hole on
the bottom of the ADF Base, and then connect it to the ADF PE Sensor on the the bottom of the ADF Base, and then connect it to the ADF PE Sensor on the
ADF Frame Assy. ADF Frame Assy.
CR Motor cable CR Motor cable
CR Motor cable CR Motor cable
Rib Rib
CR Motor CR Motor C R C R Mo Mot o t or r ca cabl ble e
Route through the hooks (x 9) on the Printer Mechanism, and connect to the Route through the hooks (x 9) on the Printer Mechanism, and connect to the
connector (CN9) on the Main Board. connector (CN9) on the Main Board.
80 digit side 80 digit side
2 2
EJ Roller EJ Roller
Star Wheel Holder Assy Star Wheel Holder Assy
C.B.P-TITE(SP C.B.P-TITE(SP-1) SCREW 3x12 F/ZN-3C (6 ±
  Attach the EJ grounding spring as shown above. Attach the EJ grounding spring as shown above.
 
Tighten the screws in the order indicated in the figure above. Tighten the screws in the order indicated in the figure above.
Cutout Cutout
D/E Lever D/E Lever
Printhead
· ·
kgf cm) cm)
t Frame.
When routing the Ink Tube, be careful about the following. When routing the Ink Tube, be careful about the following.
e Assy.
  Route through the ribs (x 3) on the Frame Base Assy. Route through the ribs (x 3) on the Frame Base Assy.
 
Make sure that the Ink Tube is not folded in any part. Make sure that the Ink Tube is not folded in any part.
  Align the marking of the ink tube with the hole of the Frame Align the marking of the ink tube with the hole of the Frame
Base Assy. Base Assy.
e e 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
Scanner Housing Lower Assy Scanner Housing Lower Assy
ADF PE Sensor cable ADF PE Sensor cable
  Scanner FFC Scanner FFC
A A D D F F B B a a s s e e
• • Route th Route through rough the rib the ribs (x 1
• • Set the ferrite core in the po Set the ferr ite core in the position sh
  Scanner grounding (GND) wire Scanner grounding (GND) wire
• • Set the Set the ground grounding (G ing (GND) ter
• • Route through the cabl Route thro ugh the cable guides (x 3
Frame Base Assy Frame Base Assy
CR Motor cable CR Motor cable Main Board Main Board
Speaker cable Speaker cable
P r P rin int e t er r Me Mech cha n a nis ism m
 
Speaker cable Speaker cable
Hook Hook
Route through the rib on the Frame Base Assy. Route through the rib on the Frame Base Assy.
  Panel FFC Panel FFC
Route behind the ribs (x 4) on the Frame Base Assy and secure at the points (x2) above with double-sided tape. Route behind the ribs (x 4) on the Frame Base Assy and secure at the points (x2) above with double-sided tape.
R R o o u u t t i i n n g g F F F F C C s s / / c c a a b b l l e e s s
Star Wheel Holder Assy Star Wheel Holder Assy
EJ grounding spring EJ grounding spring
1 1
· ·
-1) SCREW 3x12 F/ZN-3C (6 ± 1 kgf 1 kgf cm) cm)
Ink System Ink System
Ink Tube Ink Tube
Align the marking Align the marking
Rib Rib
c c h h P P a a r r t t / / U U n n i i t t
Scanner Housing Lower Assy Scanner Housing Lower Assy
S S c c a a n n n n e e r r G G N N D D w w i i r r e e Hole Hole G G N N D D t t e e r r m m i i n n a a l l
S S c c a a n n n n e e r F r FF F C C F F e e r r r r i i t t e c e co o r r e e
Double-sided tape Double-sided tape
s (x 11) on 1) on the Scan the Scanner Ho ner Housing using Lower A Lower Assy. ssy.
sition shown below own below and secur and secure it with doubl e it with double-sided ta e-sided tape.
ND) terminal i minal in the p n the position osition shown shown above. above.
e guides (x 3), then thro ), then through the hole on t ugh the hole on the Scanne he Scanner Housing L r Housing Lower Ass
Speaker cable/Panel FFC Speaker cable/Panel FFC
Panel FFC Panel FFC
Rib Rib
Double-sided tape Double-sided tape
R R e e v v i i s s
PF Roller PF Roller
PF Roller PF Roller PF Roller grounding spring PF Roller grounding spring
Attach the PF Roller grounding spring as shown above. Attach the PF Roller grounding spring as shown above.
Right Frame Right Frame
Right Frame Right Frame
Hook and Hole Hook and Hole
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
When reassembling, align the hooks on the Main Frame/Front When reassembling, align the hooks on the Main Frame/Front
Frame with the positioning holes on the Right Frame. Frame with the positioning holes on the Right Frame.
Confidential Confidential
R R e e v v i i s s
Rib Rib
Cable guide Cable guide
pe.
ower Assy. y.
Rear Rear Panel FFC Panel FFC
Confidential Confidential
i i o o n n B B
· ·
cm) cm)
· ·
cm) cm)
5 5 0 0
i i o o n n B B
5 5 1 1