CHAPTER 13 TROUBLESHOOTINGCOPYRIGHT © 2002 CANON INC. 2000 CANON iR1600/iR2000/iR1610/iR2010 SERIES REV.0 MAR. 200213-156b. Control Panel Test for a Non-Fax Model• Display TestA press on the Start key in the OPERATION PANEL test menu selects the display test,in which the notation 'ADJUST LCD CONTRAST' is indicated on the display. Anotherpress on the Start key will cause the display to turn full black and full white and then toshow the outside frame and a checker.• LED Lamp TestWhen the Start key is pressed after the display test, the LED lamp test will be selected.A press on the Start key will turn off all lamps in the control panel.• Control Key TestWhen the Start key is pressed following the LED lamp test, the key test will be se-lected. The operation is normal if the corresponding characters go off when keys arepressed on the display. When a one-touch dial key is pressed, its corresponding characterwill go off on the display.Correspondence Between the Characters and the Keys in the LED Lamp TestCharacter0 ~ 9, #, *BCDEFGIJKLMOperation keyKeypadSort keyReduce keyPage separate keySpecial features keyEnlarge keyFrame erase keyCopy keyFax keySystem keyMonitor keyF1 keyCharacterNOPQRSTUVWXYOperation keyF2 keyF3 keyF4 keyBack keyOK keyReset keyAdditional functions keyInterrupt keyClear keyID keyEnergy save keyCounter key