Spc.420 with service code 270.

[Ltd]

This happen on first print job in the morning. Code called for failure of LDU shutter's sensor.It ran fine all day after Code cleared. I tried to locate Laser unit but could not figure how to get it out to check the shutter. Somebody give me some light.

[teebee1234]

Tech bulletin for that problem, here it is along with the pages from the manual to remove the ldu. You have to remove the Electrical Board Unit first (some of the pics are inverted black>white, happened when I converted).

[Ltd]

Thanks Teebee for the informations.