Ricoh FT4430 Service Manual page 209

16 April '88
2. Clean or replace each corona wire. Also clean the corona units and the
cleaning unit.
3. Actuate the front safety switch.
4. Remove the rear cover (2 screws).
5. Plug the switching board into connector CN210 of the main board as
shown.
NOTE: All the switches on the switching board [A] should be off,
Install the drum shoe and adapter on the drum shaft with the lip to the
6
rear.
7 . Route the shoe lead wire out through the development unit opening.
8 . Connect the drum shoe and the digital multimeter leads as shown on the
next page. Positive lead to the red lead clip.
lead clip to the machine ground.
9, Open the Manual Feed table to keep the Start key red even if the machine
is warmed up.
[ A ]
Negative
5-62
lead and the black