Canon FAX-L350, Service Manual

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FAX-L350 Chapter 3: Maintenance and Service
Checking the fixing nip width
Improperly set fixing nip may cause a fixing ass’y problem. The fixing ass’y is not designed
to allow adjustment of the nip.
Check the fixing ass’y nip by using the following procedure.
(1) Either take along one or two all-black copies of A4 or letter size made with a copier, or
make one using a copier at the customer site.
(2) Set the black copy in the sheet feeder with the black side facing up.
(3) Change the paper delivery selector to the face-up delivery slot.
(4) Enter the test mode and run [3] PRINT, [6] ENDURANCE .
(5) Turn the power off when the beginning of the paper appears in the face-up delivery slot.
Turn the power off, wait for 10 seconds, and remove the paper from the face-up delivery
slot slowly.
(6) Measure the widths of the areas on the paper where toner luster is visible and check
whether they fall within the range shown in below table.
Figure 3-6 Fixing Nip Width
NOTE
Paper feed direction
Center
b
a - c
a - b
b - c
3.0 to 5.0 mm (0.12" to 0.20")
0.5 mm (0.02") or less
1.0 mm (0.04") or less
1.0 mm (0.04") or less
Dimension