Hitachi ED-X20EF Service Manual page 49

10. Replacing the lamp unit
When replacing the lamp unit, never detach the three springs.
Otherwise, it will be impossible to reuse the lamp unit.
Note:
When detaching the lamp unit, detach the connector side first.
Next, lift and detach the lamp unit inclining the lamp unit.
(The connector side is up, and the lens side is down)
This is easy way to detach the lamp unit.
control button
ED-X20EF (M1-20ED)
CAUTION
Lamp unit
connector
Lens
49
Lens fixation springs (3 pieces)