Laser Scanning Unit (Lsu) Removal - Lexmark MS312 Service Manual

Laser scanning unit (LSU) removal

Before performing this task, determine first whether your printer supports a galvo or polygon LSU.
•
Check the serial number of the printer. The LSU is galvo if the sixth digit character assigned is in the 0–9
or B–N range (example: 4514 20HH 007CR). It is polygon if the sixth digit character assigned is in the P–
Z range (example: 4514 2ZHH 007CR).
1
Remove the right cover. See
2
Remove the left cover. See
3
Remove the rear door and cover. See
4
Remove the top cover. See
5
Remove the cooling fan. See
6
Disconnect the cable JGLV1 or J6 from the controller board.
7
Before loosening the screws securing the LSU, use a sharp pencil or a small, flat-blade screwdriver to mark
the location of the LSU on the printer frame. This marking helps in positioning the new LSU.
8
Remove the LSU.
"Right cover removal" on page
"Left cover removal" on page
"Rear door and cover removal" on page
"Top cover removal" on page
"Cooling fan removal" on page
Parts removal
278
222.
207.
270.
277.
222.
4514-330