COPYRIGHT © 2001 CANON INC. 2000 2000 2000 2000 CANON iR105 REV.0 JULY 2001CHAPTER 6 TROUBLESHOOTING6-1384.1.86 The Add Toner message fails to go ONToner1) Is toner present at the rear of the hopper assembly?NO: The toner level inside the hopper is low. Replenish the hopper withtoner.Toner sensor (TS1), DC controller PCB/control panel2) Make the following selections in service mode: COPIER>I/O>DC-CON. At this time, is the state of bit 0 of address P003 ‘0’ (absenceof toner)?YES: Replace the toner sensor (TS1) of the hopper assembly.NO: 1. Replace the DC controller PCB.2. Replace the control panel.4.1.87 The Set Card Reader message fails to go ONCard reader1) Check to see that the card reader has been installed.Enter ‘1’ using the following service mode:COPIER>FUNCTION>INSTALL>CARD. Turn off and then onthe power switch. Does the message go ON?YES: Check the connector of the card reader for a short circuit.Control panel, Main controller PCB2) Try replacing the control panel. Does the message go ON?YES: End.NO: Replace the main controller PCB.4.1.88 The Set Control Card message fails to go OFFCard1) Is a card fitted to the card reader correctly?NO: Fit the card correctly.Main controller PCB, Card reader2) Can copies be made?NO: Replace the main controller PCB.YES: Replace the card reader.