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 “Right cover removal” on page 222.
2 Remove the left cover. See “Left cover removal” on page 207.
3 Remove the rear door and cover. See “Rear door and cover removal” on page 270.
4 Remove the top cover. See “Top cover removal” on page 277.
5 Remove the cooling fan. See “Cooling fan removal” on page 222.
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.
4514-330
Parts removal
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