: Feb. 6 2004
1
AR-M550/M620/M700 DETAILS OF EACH SECTION 6 - 112
a-18. Thermostat 1
a-19. Thermostat 2
1) Remove the fusing unit. (See “a. Fusing unit” in this section)
2) Remove the thermostat 1 (A) and the thermostat 2 (B).
a-20. Thermistor 3
1) Remove the fusing unit. (See “a. Fusing unit” in this section)
2) Remove the heating unit.
3) Remove the thermostat 3.
a-22. Cleaning sheet
1) Remove the fusing unit. (See “a. Fusing unit” in this section)
2) Lay the unit on its side to prevent paper dust from dispersing, and
remove the lower cover. (See “a-14. Sub heat roller” in this section)
3) Clean paper dust. (See “a-14. Sub heat roller” in this section)
4) Remove the second heating roller cleaning holding plate.
5) Do not lay the unit with the discharge brush on the lower side.
6) Remove the cleaning sheet.
• If the roller is cooled down, toner may be hardened to prevent
removing.
• Since cleaning is performed by applying a pressure by the
spring, be careful not to deform it.
• If copy dirt is heavy, replace the cleaning sheet with a new one.
[Cleaning]
When there is paper dust or foreign material on the heat sensitive sur-
face of the thermostat, clean and remove dust or foreign material.
NOTE: Be careful not to mistake the install position of the washer.
[Cleaning]
When there is paper dust or foreign material on the heat sensitive sur-
face of the thermostat, clean and remove dust or foreign material.
NOTE: Be careful not to mistake the install position of the washer.
a-21. Discharge brush
NOTE: When there are paper dusts or foreign materials at the port
area (A), clean and remove.
A
B
1
1
1
1
(A)
NOTE: Clean and remove paper dust. (Be careful not to deform the
brush.)
(CAUTION) Note for assembly of the fusing unit
Check that the harnesses on the hinge section (F frame side and R
frame side) which connects the upper and the lower frames are in the
normal state as shown below.
• If the harness on the F side extends out from the frame, repair it cor-
rectly.
• Arrange wiring as shown above so that the harness slack on the rear
side does not extend to the gear side or dose not come too closely to
the gear.
1
Cleaning
1
OK NG
OK NG
F
R
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