Sharp AR-250, Service Manual

Page: 161 / 196

*
When assembling, install so that the bearing notches come to the
outside of the frame both in the front and the rear sides.
(6) Upper heat roller gear
1
5
5
4
3
1
2
2
1
2
3
7
8
No. Name
Work
item
Cycle
Remark
AR-250/280/281/285/
286/287/335/336/337
AR-405/407 AR-501/505/507
1 Upper heat roller Clean 80 K 90 K 125K
Replace 160 K 180 K 250K
2 Lower heat roller Clean 80 K 90 K 125K
Replace 160 K 180 K 250K
3 Upper separation pawl Replace 80 K 90 K 125K
4 Lower separation pawl Replace 80 K 90 K 125K
5 Insulation bush Check 80 K 90 K 125K
6 Thermistor Check 80 K 90 K —
Clean — — 125K
7 Upper heat roller gear Lubricate 80 K 90 K 125K
Replace 160 K 180 K 250K
8 Gears Lubricate 80K 90 K 125K
*
When assembling the upper frame and the lower frame, press the upper frame securely to the lower frame and fix with the screw.
If the frames are fixed loosely, defective fusing and paper wrinkles may occur.
8 – 22 7/13/2000