Toshiba e-STUDIO477S Service Manual page 131

Error code Cause
C921 AC voltage zero-crossing error
F034 Tray4 version error
F072 PU Flash Error
F073 Request to print from
incompatible SPECVERSION
Note! ・Service calls C41E error, C41B error, C41D error, C37C error and C37D
error; These errors can occur when the printer temperature is below 0
Turn on the power again after the printer temperature has increased.
・Service call C9A0 error can release temporary, by restart the MFP with
stapler cover open.
45387101TH Rev.1
Error details Remedial measure
C h e c k t h e A C
voltage.
Change the Low-
voltage board or
PU board.
Change the Tray4
board
Change the PU
board
Chage the PU
board.
.
6. Troubleshooting and repair procedure
6-11 /