Epson L800 Service Manual page 29

L800/L801
4. Remove the three screws and remove the Main Board Unit.
Screw (2 pcs.): C.B.P.(P2) M3x8 (tightening torque: 5-7 kgf.cm)
Screw (1 pc.): C.B.S. M3x6 (tightening torque: 7-9 kgf.cm)
(The numbers shown in the figure indicate the order of tightening the screws.)
[Upper Side]
2
Positioning Holes
and Guide Pins
1
Figure 1-25. Removing the Main Board Unit (2)
Whenever the Main Board Unit is replaced, the required adjustment
A D J U S T M E N T
R E Q U I R E D
must be carried out.
Refer to "2.1.2 Required Adjustments" (p.74)
When installing the Main Board Unit, be careful of the following:
̈
Match the positioning holes with guide pins shown in Fig.1-25.
̈
Insert the rib of the Main Board Unit into the positioning hole
of the Cable Holder Frame as shown in Fig.1-25.
̈
Tighten the screws in the order given in Fig.1-25.
Disassembly/Reassembly
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[Left Side]
3
Main Board Unit
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After connecting the cables, secure them with acetate tape
following the procedures below.
1.
2.
Rib
Edge of Lower
Shield Plate M/B
Main Board Unit
Route the Power Supply Cable closely along the Lower Shield
Plate M/B, and secure the cable with acetate tapes at the
positions A, B, and C (30 mm each) as shown in Fig.1-26.
Avoiding the sharp edge shown in Fig.1-26, secure the
following cables with the acetate tape D (50 mm).
Power Supply Cable
CR Motor Cable
PF Motor Cable
PE Motor Cable
APG Sensor Cable
Positions of Acetate
tape A, B, C
A
B
Power Supply Cable
C
A
D
B
C
D
Align the upper left end
of acetate tape D with
the edge of the Lower
Shield Plate M/B.
Figure 1-26. Routing the Cables
Revision A
Main Board Unit
Lower Shield Plate
M/B
Sharp edge
28
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