-16-MaintenanceThe LAMP indicator will light yellow when the lamp runtime (Corresponding value) reaches 3,000 hours. This is toindicate that lamp replacement is required. The lamp runtime is calculated by using the below expression.Lamp runtime (Corresponding value) = Tnormal + Teco x 0.75Tnormal : used time in the Normal and Auto modeTeco : used time in the Eco1 and Eco2 modeYou can check the lamp runtime following to the below procedure.1 Press and hold the button on the projector or the POWER ON button on the remote control for more than 20seconds.2 The projector used time and lamp runtime will be displayed on the screen briefly as follows.CounterProjector 500HLampNormal 200HEco 300HCorresponding value 425H lamp runtimeProjector used timeCumulative lampoperating time ineach mode.How to check lamp runtimeWarning message on the non-standard lamp usedIf the non-standard lamp is used, the warning and confirmation messages will appear on the screen every startup.Some of the functions are limited when the non-standard lamp is used in spite of the warning.Since the lamp is not standard, projec-tor failed to read lamp data.Continue to use this lamp?YesNo