Fusing Pressure Adjustment - Ricoh FT5540 Service Manual

31 August 1989

4.9 Fusing Pressure Adjustment

When:
Target:
Measure:
How:
1. Remove the fusing unit. (Refer to "Fusing Unit Removal.")
2. Remove the fusing unit cover (2 screws).
3. Remove the fusing unit knob [A] (1 screw).
4. Remove the oil pump mechanism [B] with the oil tank [C] (2 screws, 1 connector).
5. Move the pressure springs [D] to the desired position. (See the following table.)
Position
A -- a
A -- b
B -- a
B -- b
Unfused copy with thick paper or paper curl with thin paper occurs.
Well fused copy without curl
Adjust the position of the fusing pressure spring (three settings).
Changes the distance between upper and lower fusing pressure levers.
Nip Width
7.2 mm
6.7 mm
7.7 mm
7.2 mm
Spring Pressure
40 kg (Normal/Factory setting)
33 kg (Thin)
48 kg (Thick)
40 kg (Normal)
5-34