Canon CLC4000 Error Code 840-0002

[Guest]

I need a help on Canon CLC 4000 Error Code 840-0002 ? Googled throught the internet, but nothing shows, Can somebody tell me what this error code is about?
Prompt response to this matter will be greatly appreciated, Thanks to all good, kind and awesome Copier Technician out there! ^_^....

[zoraldinho]

The external heat roller HP sensor
1 (PS9003) or the external heat
roller HP sensor 2 (PS9004) is
faulty.

The machine detects an unmatch between the readings of the following:
external heat roller HP sensor 1 (PS9003, software control sensor,
outside) and external heat roller HP sensor 2 (PS9004, hardware error
sensor).

[teckat]

check out the drive gears on the oil applying assembly for any broken or missing teeth.
Remove electromagnetic clutch (CL9000) from assembly and clean the attraction plates (replace if problem persists ). Check all shaft bearings, lube and replace if necessary.

External Heat Home Position Sensors, PS9003 & PS9004, can become over heated. Replace the Prefixing Duct Filter (FF6-1117-000) and PS9003 & PS9004 (FH7-7306-000).

Keep all filters in place for optimum air flow but it may be necessary to replace the pre-fixing duct filter sooner depending on the coverage of prints / copies.