Chapter 1515-37[ Inspected by Canon Inc. ]DescriptionSince the message "Insert the drum cartridge." appeared (for all the 4 colors) although no drum cartridge reached the end of service life, the image formationhigh-voltage PCB was replaced for solution. When the same symptom occurs, perform the following steps in sequence.CauseSince the image formation high-voltage (HV1) PCB was faulty, bias was not applied to the developing cylinder in each drum cartridge, causing the cylindersto fail to attract toner particles. This machine recognized this situation as a fault in each drum cartridge, and displayed the message.Field Remedy1. Pull out the drum cartridges and then re-insert them.2. Re-fit all the connectors of the image formation high-voltage (HV1) PCB.3. Re-fit J112A and J112B connectors of the DC controller PCB.4. Replace the image formation high-voltage (HV1) PCB with a new one.FM2-5548 Bias High Voltage PCB Assembly15.3.3.4.9 Message "The Default Key is corrupted or invalid." appears after replacement of SRAM PCB0018-7647Color iR C3380G / Color iR C2880G / Color iR C3380i / Color iR C3380 / Color iR C2880i / Color iR C2880 / iR C3480 / iR C3480i / iR C3080 / iR C3080i / iRC2550[ Case in the field ]DescriptionSince the message "The Default Key is corrupted or invalid." after replacement of the SRAM PCB, the service mode item "CAKEY" was executed forsolution.Field RemedyIn service mode (Level 2) > COPIER > Function > CLEAR > CAKEY, press [OK], and then turn the main power switch OFF/ON.15.3.3.4.10 Message "Replace toner cartridge. (Yellow)" is displayed: Toner sensor is faulty0019-3703Color iR C3380G / Color iR C2880G / Color iR C3380i / Color iR C3380 / Color iR C2880i / Color iR C2880 / iR C3480 / iR C3480i / iR C3080 / iR C3080i / iRC2550[ Case in the field ]DescriptionSince the message "Replace toner cartridge. (Yellow)" was displayed with plenty of toner left, the toner sensor was replaced with a new one for solution.CauseThe faulty toner sensor falsely detected the amount of toner left.Field Remedy1. Interchange the toner sensor for the color indicated by the displayed message and that for another color to check to see if the message changes.2. If the message changed, replace the trouble toner sensor with a new one.FH7-7422 Toner Sensor15.3.3.5 Other Defect15.3.3.5.1 During test print, machine fails to start/hangs up when progress bar runs up to point og one-tenth: RB-A PCB is faulty0015-9471Color iR C3380G / Color iR C2880G / Color iR C3380i / Color iR C3380 / Color iR C2880i / Color iR C2880 / iR C3480 / iR C3480i / iR C3080i / iR C2550[ Inspected by Canon Inc. ]DescriptionWhen starting this machine by pressing the numeric keys '1' and '7' at the same time during a print test at pre-installation, the machine hung up when theprogress bar ran up to one-tenth the way; however, this symptom was solved by replacing the RB-A2 PCB by a new one.Field Remedy1. Re-fit the RB-A2 PCB.2. If Step 1 does not work on the symptom, wipe the terminal of the RB-A2 PCB with lint-free paper impregnated with alcohol, and then connect the PCBagain.3. If the symptom still occurs, replace the RB-A2 PCB with a new one.Note: When connecting the PCB [3], sandwich it between the mounting plate [1] and the leaf spring [2].
