Pre-Cleaning Corona Clrcuit; Pre-Cleaning Corona Circuit - Ricoh FT5540 Service Manual

31 August 1989

8.6 PRE-CLEANING CORONA CIRCUIT

The PCC power pack receives 24 volts (Vp) from the TC/SC power pack. To energize the
PCC power pack, the main board supplies a LOW signal at CN101-A2 to the PCC power pack
through the TC/SC power pack, which in turn applies a LOW signal at CN1-4 to energize the
PCC power pack.
The PCC power pack energizes at the same time that the main motor turns on and
de-energizes 570 milliseconds after the registration sensor turns off.
2-60