Ricoh FT5540 Service Manual page 277

31 August 1989
2. Clean all corona units (including the corona wires).
3. Disconnect the connector [A] on the main motor so that the drum shaft does not rotate
during adjustment.
4. Plug a switching PCB [B] into CN3 of the TC/SC power pack PCB [C]. Confirm that the
DIP switches face the paper feed control PCB.
5. Install the drum shoe and adapter on the drum shaft with the lip to the rear. Route the
shoe lead wire out through the development unit opening.
6. Connect the positive lead of the digital multimeter to the red lead [D]. Connect the nega-
tive lead of the digital multimeter and the black lead [E] to the machine ground.
7. Deactuate the front safety switch.
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