BenQ MP612C User Manual - Page 52

Lamp information Calculation of lamp hour When the projector is in operation, the duration (in hours) of lamp usage is automatically calculated by the built-in timer. The method of calculating the equivalent lamp hour is as follows: Total (equivalent) lamp hour = 1 (hours used in Economic mode) + 4/3 (hours used in normal mode) See "Lamp mode (Normal)" on page 49 for more information on Economic mode. The lamp hour in Economic mode is calculated as 3/4 of that in normal mode. That is, using the projector in Economic mode helps to extend the lamp hour by 1/3. Warning message When the Lamp indicator lights up red or a message appears suggesting it is time to replace the lamp, please install a new lamp or consult your dealer. An old lamp may cause a malfunction in the projector and in some instances the lamp may explode. The Lamp indicator light and Temperature warning light will light up if the lamp becomes too hot. Turn the power off and let the projector cool for 45 minutes. If the Lamp or Temp indicator still lights up after turning the power back on, please contact your dealer. See "Indicators" on page 56 for details. The following Lamp warning displays will remind you to change the lamp. Message Notice Order Replacement Lamp Lamp > 3000 Hours OK Status The lamp has been in operation for 3000 hours. Install a new lamp for optimal performance. If the projector is normally run with "Economic Mode" selected (See "Lamp mode (Normal)" on page 49), you may continue to operate the projector until the 3950 hour lamp warning appears. Notice Replace Lamp Soon Lamp > 3950 Hours The lamp has been in operation for 3950 hours. A new lamp should be fitted to avoid the inconvenience when the projector runs out of lamp time. OK 52 Maintenance