Removal Of The Ph Unit - Minolta Di 620 Manual

3) Removal of the PH Unit

DANGER
You must conform to these procedures or you are endangering your eyes to exposure by
class IIIb laser radiation.
WARNING
Whenever servicing the PH Unit, make sure that the power cord has been unplugged from
the outlet.
Never attempt to disassemble PWB-J and the PH Unit.
1. Slide out the IR Unit.
2. Unplug one connector from the Polygon Motor Control Board.
3. Unplug three connectors from the PH Board.
4. Remove three screws that secure the PH Unit and remove the PH Unit.
NOTES
1) The PH Unit is not maintainable. It is to be replaced as an assembly. NEVER open the top cover
of the PH Unit to attempt a disassembly.
2) Do not touch the window glass surface on the bottom of the PH Unit. (A dirty window glass results
in white streaks in the image.)
3) When the PH Unit has been reinstalled, perform Zoom (FD) Adjust, Registration (CD, FD), Lead
Edge Erase, Trail Edge Erase.
4) During installation, view the PH Unit from the above, turn it clockwise until it is stopped, then
secure it in position with the screws.
D-32
1155D040AA