Panasonic PT-DZ21K2 Operating Instructions Manual page 184

When to replace the lamp unit
The lamp unit is a consumable component. Since its brightness gradually decreases over time, it is necessary to
replace the lamp unit regularly. The estimated duration before replacement is 3 000 hours, but the lamp may go
off before reaching 3 000 hours, depending on the characteristics of the individual lamp, usage conditions, and the
installation environment. It is recommended that the replacement lamp unit be prepared earlier.
If you continue to use the lamp unit after 3 000 hours has elapsed, the lamp turns off automatically after
approximately 10 minutes, as it may cause malfunction of the projector.
The projector will go into standby mode in approximately 10 minutes after the runtime of all four lamp units
exceeds 3 000 hours.
Over 2 800 hours
Over 3 000 hours
Note
f To predict when to replace the lamp, check the lamp runtime displayed in [LAMP1] to [LAMP4] of [STATUS] (x page 137).
f The runtime of 3 000 hours is a rough estimate and is not guaranteed.
f The estimated duration before replacing the Replacement lamp unit (for portrait mode) is 1 000 hours. The on-screen message for replacing
the lamp appears after 800 hours.
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 Do not remove or loosen the screws other than specified ones when replacing the lamp unit.
f Use the same type of lamp unit for all four lamps.
Note
f When you replace the lamp unit with new one, the projector resets the runtime of the lamp unit automatically.
f You will feel a jam when removing or attaching the lamp case, but that is because of the stopper for drop prevention and not a problem.
184 - ENGLISH
Chapter 5 Maintenance — Maintenance/replacement
On-screen display
REPLACE LAMP
The message is displayed for 30 seconds. Pressing
any button on the control panel or remote control
within 30 seconds will clear the message.
The message remains displayed until you press any
button.
Lamp indicator
The indicator lights in red even during the standby
mode. (Only the corresponding lamp lights on.)