Dell S500 Projector - Manual (Page 117)

9 Reset the lamp usage time by selecting "Yes" for Lamp Reset in the OSD Power
Settings of the Advanced Setting menu (see Power Settings of the Advanced
Setting menu on page 67). When a new lamp module has been changed, the
projector will automatically detect and reset the lamp hours.
CAUTION: Lamp Disposal (for the US only)
LAMP(S) INSIDE THIS PRODUCT CONTAIN MERCURY AND MUST BE
RECYCLED OR DISPOSED OF ACCORDING TO LOCAL, STATE, OR FEDERAL
LAWS. FOR MORE INFORMATION, GO TO WWW.DELL.COM/HG OR CONTACT
THE ELECTRONIC INDUSTRIES ALLIANCE AT WWW.EIAE.ORG. FOR
LAMP-SPECIFIC DISPOSAL INFORMATION, CHECK
WWW.LAMPRECYCLE.ORG.
Troubleshooting Your Projector 117