Canon C2050 Service Handbook page 275

E717
Main cause The Copy Data Controller-A1 or the NE Controller is faulty or has an open
circuit. The system controller PCB is faulty.
Condition of
detection
When the copy start signal is generated, the count pulse is not detected by
the Copier Controller-A1 or the NE controller within a specific period of
time.
After connection, the Copy Data Controller-A1 or the NE Controller is dis-
connected.
E800
Main cause The electric system has an error. The DC controller PCB is faulty.
Condition of
detection
0001 The shut-off relay of the main power switch (SW1) is found to
0002 The AC relay (RL1) is found to have an open circuit.
0003 The DC relay (RL2) is found to have an open circuit.
0004 +24 VRET does not change to +24 V even when the front door,
E805
Main cause The fixing fan has an error. The delivery fan has an error. The machine
cooling fan has an error. The power supply cooling fan has an error. The de-
curling fan has an error. The kit drive cooling fan has an error. The transfer
motor cooling fan has an error.
Condition of
detection
0001 The fixing fan (FM1) is found to have locked.
0002 The delivery fan (FM2) is found to have locked.
0003 The machine cooling fan (FM4) is found to have locked.
0004 The power supply cooling fan (FM6) is found to have locked.
0005 The de-curling fan (FM7) is found have locked.
0006 The kit drive cooling fan (FM10) is found to have locked.
0007 The transfer motor cooling fan (F13) is found to have locked.
have an open circuit.
fixing door, and face-down delivery unit are all closed.
ERROR CODE
E-11