Dell 4320 Projector - Manual (Page 107)

Setting menu on page 54). 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 107