Canon imagePROGRAF iPF820 iPF820 User Manual - Page 657

Other problems If the Printer Makes a Strange Sound Cause The printer makes a sound during operation. Corrective Action The following sounds do not indicate a problem with the printer. • There is a sound of vacuum from the Platen To prevent paper from rising, paper is held against the Platen by suction from Vacuum holes under it. • There is a sound when a different size of paper is used and when the Carriage goes from side to side This may happen especially when using B0 or 44-inch paper. When paper of a different size is used, a valve is automatically activated to switch the area for paper suction, which may make a sound. This mechanism prevents vacuum from Vacuum holes where there is no paper. In addition, ink is ejected in sync with the movement of the Carriage back and forth to ensure optimal ink ow. At this time, the valve automatically switches the area for paper suction, which may make a sound. • Roll paper makes a uttering sound during printing There may be a uttering sound when large paper is advanced. • You suddenly hear the tone for cleaning operations At regular intervals, for printer maintenance, cleaning operations will begin automatically, even if the printer is in Sleep mode. • You suddenly hear the tone for ink agitation At regular intervals, to ensure optimal printing quality, the ink is agitated automatically, even if the printer is in Sleep mode. Ink agitation takes about a minute and a half. The ink is also agitated automatically under the following conditions. Note that other operations are not possible while Agitating is displayed on the control panel. • After the printer is turned on. (The time for agitation varies depending on how long the printer has been turned off-between about a minute and a half to twenty minutes. During agitation, you can print or do other operations after the printer goes Online.) • After data transmission. (After about a minute and a half, the printer goes Online, and printing operations begin. However, printing may start later after data reception, depending on the size of print data.) • After ink tank replacement. (Ink agitation takes about three and a half minutes. During agitation, you can print or do other operations after the printer goes Online.) In other cases, contact your Canon dealer. Troubleshooting 643