Its an ARC lamp so it has no filaments. Check the owners manual it should say what the lights mean. You can't tell by looking at it to see if it is defective either trying it in another projector or replacing it with a known good lamp is the only way to test it. Genuine lamps are expensive and the cheap knockoffs are hit or miss so unless the error indication from the manual says its the lamp its a very expensive proposition to see if a new lamp will work.
"Smart enough to know better, to old to care" ------ Dedicated Bat Cave Home Theater, JVC RS49U/Mitsubishi HC7900DW Projector, 110" 16:9 Jamestown screen with variable power masking for CIW 2.50:1 to 16:9, Marantz 7009 with 7.1.4 Atmos with Ohm mains,3 DIY Subs (2 15" (1 ported, 1 sealed and a 12" 4th order bandpass), 1 DIY butt kicker, Custom Built HTPC, 18TB DroboFS NAS