Epson Stylus DX4850 Service Manual

EPSON Stylus CX4100/CX4200/CX4700/CX4800/DX4200/DX4800/DX4850 Revision A
DISASSEMBLY/ASSEMBLY Printer Section 141
4.4.11 Main Board Unit/Card Slot Unit
 External view (1)
Figure 4-19. Removing Main Board Unit (1)
 Part/Unit that should be removed before removing Main Board Unit
Document Cover / Paper Support Assy. / Scanner Unit / Panel Unit /
Housing, Upper / Printer Mechanism
 Removal procedure
 Main Board Removal
1. Peel off the acetate tape (x1) that secures the Head FFCs (x3).
2. Peel off the acetate tape (x1) that secures the PG Sensor Connector Cable.
3. Release the PG Sensor Connector Cable from the tabs (x3, ) of the Main
Board Unit.
4. Peel off the acetate tapes (x2) that secure the PE Sensor Connector Cable, and
release the PE Sensor Connector Cable from the tabs (x2, ) of the Main
Board Unit.
5. Disconnect the following connector cables and FFCs from the connectors of
the Main Board.
• CN3: PE Sensor Connector Cable
• CN4: PG Sensor Connector Cable
• CN5: Head FFC
• CN6: Head FFC
• CN7: Head FFC
• CN8: CR Motor Connector Cable
• CN9: PF Motor Connector Cable
6. Remove the screws (x3, ) that secure the Main Board Unit, and remove
the Main Board Unit from the Printer Mechanism.
PG Sensor
Connector
Cable
Head FFC
Main Board
Unit
Acetate
Tapes
Double-
sided Tape
Acetate
Tapes
PE Sensor
Connector
Cable
CN4CN3
CN8CN9
3
2
1
C.B.S. 3x6 F/Zn
(7±1kgfcm)
Guide Pin
C.B.S. 3x6 F/Zn
(4±1kgfcm)
CN7
CN5
CN6
Slit
PF Encoder
Sensor
PF Scale
Bottom
Double-sided Tape
Tabs
Ribs
 Insert the PF Scale into the slit of the PF Encoder Sensor.
 Insert the ribs (x3, ) of the Main Frame into the tabs (x3) of the
Main Board Unit.
 Insert the rib (x1, ) of the Main Board Unit into the tab (x1) of
the Main Frame.
 Match the positioning hole (x1) of the Main Board Unit with the
guide pin (x1,
) of the Main Frame.
 Tighten the screws in the order as shown in the figure.

Epson Stylus DX4850 Specifications

General

Brand	Epson
Model	Stylus DX4850
Category	Printer
Language	English