Hitachi ED-X20EF Service Manual page 45

When assembling
a. Tighten 7 screws on the bottom and 3 screws on the rear after attaching the upper case with the lamp door
separated.
In order not to make a gap between the upper and the bottom cases, tighten these screws while pressing
down the upper case in the direction of the arrow. Be careful not to bend the outside casing. (Torque:0.39-
0.59N•m)
b. Attach the Lamp door.
3. Replacing the power units.
You have to remove the
dettach the power unit.
Remove the 4 screws to take off the power units.
NOTE : Detaching power unit(circuit)
PCB holder
Push
UP
Push
UP keep
ED-X20EF (M1-20ED)
Optics unit, Lamp duct and
1 2
Stick two pieces of the power unit cushion
to power unit when replacing it.
Lamp door
Tighten this screw using a manual screwdriver.
Lamp house in order of
3
33
45
CAUTION
, and
1 2 3
before