C46 appeared on my toshiba e-studio 550 copier

The pressure roller in the fixing unit thermister might flipped check and adjust or replace.
double image is caused by wear and tear of upper roller.\ due to web not turning or running out..you will net to rebuilt your fixing unit. also check that you have the update web bushings so next time it won't lock up and damage your upper roller.

C46 indicates Abnormal pressure roller thermistor during a ready state.

Perform following inspection:

1.. Clear the status counter.
Change the current status counter value (08-400) “3” or “8” to “0”.

If happen again, perform following inspection:

1. Check the pressure roller thermistor.
(1) Check if the connector is not disconnected.
(2) Check if the pressure roller thermistor closely touches the surface of the pressure roller.
(3) Check if the harness of the pressure roller thermistor is not open-circuited.

2. Check the LGC board.
(1) Check if the connector J334 is not disconnected.
(2) Check if the conductor pattern on the LGC board is not short- or open-circuited.
(3) Replace the LGC board.