Canon C2050 Service Handbook page 278

ERROR CODE
E624
Main cause The editor has an error
Condition of
detection
An error has occurred in the communication with the editor digitizer.
E625
Main cause The editor has an error.
Condition of
detection
An error has occurred in the editor RAM.
E626
Main cause The editor has an error.
Condition of
detection
An error has occurred in the LCD of the editor.
E627
Main cause The editor ha an error.
Condition of
detection
An error has occurred in the ASIC of the editor.
E628
Main cause The editor has an error.
Condition of
detection
An error has occurred in the IPC of the editor.
E629
Main cause The editor has an error.
Condition of
detection
A sequential error has occurred in the editor.
E710
Main cause The DADF/editor IPC communication (initialization) has an error.
Condition of
detection
At power-on, synchronization fails in the IPC communication between the
reader unit and DADF/editor within a specific period of time (3 sec).
E-14