Page: 241Service Manual for OF5300/5600Chapter A Board Descriptions1) The TR1 high-voltage is obtained by rectifying the secondary output of Q17 switching circuit by avoltage-doubler rectifier.2) TR1 output circuit has both constant current (hereinafter called CC) and constant voltage (hereinaftercalled CV) modes.3) At first, TR1 output circuit operates in the CC mode. Once the voltage determined by parameters suchas roller and medium is obtained, this circuit changes to operate in the CV mode by the control signal.4) The TR2 output voltage is regulated by keeping the voltage obtained by switching operation of Q15 at aconstant voltage by D66 and D65.Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA BusinessPartner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
