Canon PC430 Service Manual - Page 18

CHAPTER 1 GENERAL DESCRIPTION IV. OPERATION A. Control Panel 1. PC420/430/FC220 3 654 AE A Error indications : Check jam/Supply paper : Jam and : Check error and : Check error and : Check error C ON OFF 9 darker lighter lighter darker 1 245 6 78 10 Figure 1-401A q Density Control Dial w AE key • Press it to select/deselect AE (automatic exposure) mode. e AE Indicator • 'A' goes ON when AE mode is selected. • 'A' goes OFF when AE mode is deselected. r Jam Indicator • Flashes when paper jams inside the copier. t Copy Count Indicator • Displays the number of copies entered by pressing the Copy Count Set key. • The count decreases for each copy made; the initial number is displayed after the last copy has been made. • ' ' is displayed to indicate pick-up failure or absence of paper; ' ' is displayed in response to an error found by self diagnosis. y Copy Count Set Key • Each press on the key increases the copy count (up to 9). • A press while ' ' is displayed causes ' ' to appear, indicating all sheets on the pick-up tray will be used for continuous copying. u Clear/Stop Key • During continuous copying, the key serves as a Copy Stop key; the operation stops after finishing the ongoing copy. • During standby, the key serves as a Clear key, setting the copy count to ' '. i Copy Start Key o Power Switch !0 Density Correction Switch • Switches copy density among three settings (top for darker, bottom for lighter). • The density is switched by varying the developing bias. 1-6 COPYRIGHT © 1998 CANON INC. CANON PC400/420/430,FC200/220 REV.0 JAN.1998 PRINTED IN JAPAN (IMPRIME AU JAPON)