Canon PC980 Service Manual - Page 106
Canon PC980 - PC 980 B/W Laser Manual
UPC - 030275182323
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Page 106 highlights
CHAPTER 4 IMAGE FORMATION SYSTEM Main transformer T101 High-voltage transformer for developing/static eliminator Developing DC bias detection circuit +5V T201 Static eliminator bias generation circuit + Photo sensitive drum Developing cylinder Static eliminator DC bias control signal BIAS_PWM DC bias monitor signal BIAS_S AC bias oscillation signal ACBIAS J103 J203 -3 -6 DV_DC_ON DV_AC_ON -7 Microprocessor (Q900) Composite power supply PCB Serial communication Microprocessor (Q101) -2 AE signal Copy density setting signal Copy density correction signal AE sensor PCB Control panel Density correction switch (SW101) DC controller PCB Figure 4-107 4-12 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)