Fuse And Filter Circuit Board; Daughter Board; Control Circuit Board (Main Board); Printer Mechanism - Epson FX Series Product Support

REPAIRS/ADJUSTMENTS
4.4 FUSE AND FILTER CIRCUIT BOARD
Removal
Remove the Upper Case (4.1).
Disconnect the harness from the Power
Transformer (Refer to Parts List for the
model you are servicing).
Remove the screw witnin the circle marked
"CGND" on the Fuse and Filter Circuit Board.
Remove the screw fastening the ground
wire from the AC Power Cord.
Remove the Fuse and Filter Circuit Board
with the AC Power Cord attached.
Replacement
1. Reassemble in reverse order.
4.5 DAUGHTER BOARD (All Models except RX)
Refer to Figure 4-4
Removal o
3.
4.
5.
6.
Remove the Uppercase Assembly (4.1).
Disconnect the harness from the Daughter
Board to the Control Circuit Board if one is
present (fig. 4-4).
Remove the ground strap and clamp.
Remove the screws securing the Daughter
Board to the Control Circuit Board.
Open the clamp holding the Daughter Board
to the Control Circuit Board.
Lift the Daughter Board from the Control
Circuit Board.
Mounting Screws
FX Series
i
•
>Mounting Screws ® •
Harness
MX Series
Figure 4-4 Daughter Board Removal
Replacement
1. Reassemble in reverse order.
4-2
EPSON PRINTERS
4.6 CONTROL CIRCUIT BOARD
Refer to Figure 4-5
Removal
1. Remove the UpperCase Assembly (4.1)
2. Remove the Daughter Board (4.5)
3. Disconnect connector from the power
transformer.
4. Disconnect the connector from the Printer
Mechanism.
5. Disconnect any other connectors from the
Printer Mechanism (Refer 6.4- Cable
Connections).
6. Remove the screws securing the Control
Circuit Board to the chassis (fig. 4-5).
7. Unhook the Control Circuit Board from the
Lower Case clamps.
8. Lift out the Control Circuit Board.
CN6
Mounting Screws
m
Connectors
Lockmg Tabs
FX Series
Figure 4-5 Control Board Removal
Replacement
1. Reassemble in reverse order.
2. Set DIP Switches on the new board to match
the board you are replacing.