Hitachi ED-X20EF Service Manual page 47

5. Attaching / Detaching the optics unit
(1) Remove the three screws as shown in the diagram.
And detach the optics unit vertically.
(2) Put the optics unit on the bottom case, and tighten screws
in order of 1, 2 and 3 as shown in the diagram.
Prepare the fi lter cover for bottom-up use for attaching.
Attach the optics unit in the level place.
Change the fi lter cover to the fi lter cover for bottom-up use to prevent the
bending of the bottom case.
Re-change the fi lter cover after you attached optics unit.
6. Replacing the LCD/PRISM assembly
Note:
You can remove the LCD/PRISM ASSY without detaching the optics
unit from bottom case.
(1) How to remove damaged LCD/PRISM Assy
Remove three screws (M2 x 8).
Remove damaged LCD/PRISM ASSY from the DICROIC OPTICS
UNIT vertically to avoid the possibility that the positioning boss cracks.
(2) How to install new LCD/PRSM ASSY
Please don't LCD PANEL contact with other parts.
Please install new LCD/PRSM ASSY into the DICROIC OPTICS UNIT vertically to avoid the possibility that
the positioning boss cracks. Note that LCD PANEL don't come in contact with other parts when you install it.
Please tighten up a screw (M2x8) in order of 1→2→3.
Push the LCD/PRISM ASSY to the Lens side when tighten the screws.
Otherwise, Focus might be not suitable.
reference : at tightening torque 0.15~0.3N•m.
7. Replacing the LENS ASSY
(1) Detach the optics unit from bottom case before take the
LENS ASSY off. (See Notice 4)
(2) Remove four screws and four nuts, and take the LENS
ASSY off.
ED-X20EF (M1-20ED)
CAUTION
CAUTION
47
2
3
M2 x 8 (3pieces)
1
3
M2 x 8 (4 pieces)
LENS ASSY
1
2
LCD/PRISM
Assy
BOSS
(2 Parts)
M2 Low
NUT
M2 Low NUT