underside of psc glass is dirty

[windtwo]

Hi, my name is Bob,

Just a quick question, I have a hp psc 2175v printer that works perfectly, but the glass needs to be cleaned on the underside. HP could not help me, I know it has to come out some how, I only found one screw, and it only lets me lift one corner of the glass. If anyone knows how to clean it, it would greatly be appreciated

Thank You
Bob

 

[Auger282]

q-tip or compressed air

a lot of the faceplates snap into place and dont have screws.. I'm not sure about the 2175v though