Ricoh D177 MPC2503 MET-C1

Fusing Shield Check

Procedure 1: Operation check for the lower side of the shield detection feeler

1. Place the fusing unit on a flat place and tilt it towards the drawer connector [A].
2. Move the shield drive gear with your hands to put the upper surface of the feeler [A] in a horizontal position.
3. Keep your fingers off the shield drive gear.
4. Make sure that the shield detection feeler [A] moves down to the lowest point by its own weight.
   • The feeler moves smoothly: OK
   • The feeler does not move / stops during moving / moves but slowly: NG

Procedure 2: Operation check for the upper side of the shield detection feeler

1. Place the fusing unit on a flat place with the drawer connector [A] turned up and the handle [B] touching a flat surface.
2. Move the shield drive gear with your hands to put the upper surface of the feeler [A] in a vertical position.
3. Keep your fingers off of the shield drive gear.
4. Make sure that the shield detection feeler [A] moves up to the highest point by its own weight.
   • The feeler moves smoothly: OK
   • The feeler does not move / stops during moving / moves but slowly: NG

Results

• Both Procedure 1 and 2 are OK: No problem.
• Either Procedure 1 or 2 is NG: The mechanism is blocked.
• The shield detection feeler never moves while moving the shield drive gear by hands or fingers: Locked.

Solution

By tilting the fusing unit, you can check whether the feeler does not move smoothly due to burrs on a part in the unit, and remove the burrs.

1. Tilt the fusing unit [A] approx. 30°.
2. Put the fusing unit back to the horizontal position.
3. Perform the checking procedures (page 660).
   There is no blockage: Resolved
   There is some blockage: Not resolved
4. Tilt the fusing unit [A] approx. 30° in the opposite direction from step 1.
   There is no blockage: Resolved
   There is some blockage: Not resolved