Canon IR105+ showing "Finisher can not be used"

[SCREWTAPE]

Screwtape please tell me something.
How is possible finisher dont work and there is not any error code showed on the screen?
Just to learn something more.

Don't know.

Check your voltages to determine which pcb is faulty, as I said it could also be the fuse pcb or both.
Something overloaded and blew out.

To Troubleshoot for the missing 5 volts:

Check for 5 volts at J714 - Pin 7, of the Fuse PCB. If the 5 volts is missing, check J711 - Pin 1, of the Fuse PCB for 5 volts. If 5 volts is present at J711 - Pin 1, replace the Fuse PCB, if missing, replace the Finisher Power Supply.

[jiongpao]

I got that machine too with a morning call "finisher cannot be use" but it run normally until now since 2 months ago. No jam, no error code, nothing happen, finisher working fine till today the message still appear.