NEC NP-UM330W Installation And Adjustment Manual page 13

6. Make the initial setting of the arm unit's vertical
position.
Upon shipment from the factory, the arm unit is set to the uppermost position.
(1) Loosen the arm unit's fixing screw (A), then holding the arm unit's base, lower the arm unit to
the lowermost position.
(2) Temporarily fasten the fixing screw (A).
This completes the initial setting of the arm unit's vertical position.
WARNING
- Do not remove the safety lock screws other than for assembly. Doing so could cause
the slide arm to come off and fall, resulting in injury.
- When lowering the arm for adjustment, be sure to hold it at its base. If held at any
other position while performing the adjustment, the arm could be damaged or fall, re-
sulting in injury.
Arm unit
ENG-12
(1) (2) Fixing screw (A)