Panasonic PT-DX820 Operating Instructions Manual page 167

Note
f To predict when to replace the lamp, check the lamp runtime displayed on [LAMP1] and [LAMP2] in [STATUS] (x page 122).
f 4 000 hours is a rough estimate for replacement, and not a guaranteed time.
How to replace the lamp unit
Attention
f When the projector is mounted on the ceiling, do not conduct work while your face is near the lamp unit.
f Make sure to attach the lamp unit and the lamp unit cover securely.
f If you are having difficulty attaching the lamp unit, remove it first and then push it in again slowly. Pushing it in quickly or forcibly may break
the connector.
Lamp unit cover
Lamp unit cover fixing screw
Fig. 1
1) Set the <MAIN POWER> switch to <OFF> and disconnect the power plug from the power outlet.
f Wait at least one hour and check if the lamp unit has cooled down.
2) Remove the lamp unit cover. (Fig. 1)
f Use a Phillips screwdriver to turn the lamp unit cover fixing screw (x1) counterclockwise until it turns freely,
and open the lamp unit cover slowly in the direction of the arrow.
f Opening the lamp unit cover quickly may damage the cover.
f If you loosen the lamp unit cover fixing screw with the projector installed upward in the vertical direction, the
lamp unit cover may open on its weight and may be dropped off.
3) Remove the lamp unit. (Fig. 2)
f Use a Phillips screwdriver to turn the lamp unit fixing screws (x3) counterclockwise until they turn freely, and
then remove the lamp unit.
f Hold the handles of the lamp unit and remove it straight.
4) Push in the new lamp unit while paying attention to the insertion position.
f If you are having difficulty attaching the lamp unit, remove it first and then push it in again slowly. Pushing it
in quickly or forcibly may break the connector.
5) Use a Phillips screwdriver to firmly tighten the lamp unit fixing screws (x3 each).
f Make sure to attach the lamp unit securely.
6) Attach the lamp unit cover.
i) Perform Step 2) in the reverse order to close the lamp unit cover.
f Attach the lamp unit cover so that the connector on the lamp unit cover is inserted to the fan power
connector securely.
ii) Use a Phillips screwdriver to firmly tighten the lamp unit cover fixing screw (x1).
f Make sure to attach the lamp unit cover securely.
Note
f When you replace the lamp unit with new one, the projector resets the runtime of the lamp unit automatically.
Chapter 5 Maintenance — Maintenance/replacement
Lamp unit 2
Lamp unit 2 fixing screws
Handles
Lamp unit 1
Fan power connector
Lamp unit 1 fixing screws
Fig. 2
ENGLISH - 167