Chapter 1 Preparation — Precautions for use22 - ENGLISHf Depending on the operating environment temperature, the luminance of the light source will decrease.The higher the temperature becomes, the more the luminance of the light source decreases.f The luminance of the light source will decrease by duration of usage.The time until when the luminance of the light source decreases by half differs depending on the setting of the[PROJECTOR SETUP] menu → [OPERATION SETTING] → [OPERATING MODE].The estimated time until when the luminance of the light source decreases by half is as follows.(The time is estimated when the [PICTURE] menu → [DYNAMIC CONTRAST] is set to [3].)g When [OPERATING MODE] is set to [NORMAL]: Approximately 20 000 hoursg When [OPERATING MODE] is set to [ECO]: Approximately 24 000 hoursg When [OPERATING MODE] is set to [LONG LIFE1]: Approximately 43 000 hoursg When [OPERATING MODE] is set to [LONG LIFE2]: Approximately 61 000 hoursg When [OPERATING MODE] is set to [LONG LIFE3]: Approximately 87 000 hoursThe luminance can be maintained as much as possible for the same runtime by setting the [PROJECTORSETUP] menu → [OPERATION SETTING] → [CONSTANT MODE] to [AUTO]. These times are rough estimatewhen the projector is used without changing the [OPERATING MODE] and [CONSTANT MODE] settings, andwill vary depending on individual difference and usage condition.If brightness is noticeably reduced and the light source does not turn on, ask your dealer to clean inside theprojector or replace the light source unit.rComputer and external device connectionsWhen connecting a computer or an external device, read this manual carefully regarding the use of power cordsand shielded cables as well.rSlotThis projector is equipped with two SLOT NX-specification slots.There are four SDI input terminals and one DIGITAL LINK input terminal equipped on this projector as thestandard video input terminals. The input for HDMI, DVI-D, and SDI can be added by installing the optionalInterface Board in the slot.“SLOT NX” is a name of the slot unique to Panasonic supporting the signal input for the 4K image.