Canon LBP351 Series Service Manual page 166

Error Code Title
E740-0004 Network Chip error
detection
E744-0800 Model code mis-
match
E744-0900 Detection of invalid
Bootable
E744-1000 Firmware error
E744-1100 System error
E748-2012 FLASH rewrite er-
ror
E760-0000 Firmware error
E805-0001 Fan 3 failure
E805-0002 Fan 1 failure
E805-0008 Fan 4 failure
E805-0009 Fan 2 failure
E805-0010 Duplex Fan failure Duplex Fan failure
E808-0001 Low-voltage power
supply failure
E840-0000 Fixing disengage-
ment error
※XX-nn-Error:nn: 2-digit alphanumeric
Detection description
Controller Chip access error
Mismatch between the model
information of the Main Con-
troller PCB and the model in-
formation of the host ma-
chine.
Bootable of another model
was detected.
Mismatch of the model for
which the firmware was down-
loaded is detected.
System error
Unable to rewrite the FLASH
ROM
An error in connection occur-
red due to controller software.
Fan 3 failure
Fan 1 failure
Fan 4 failure
Fan 2 failure
Low-voltage power supply
failure was detected.
Fixing pressure release
mechanism error
1. Turn OFF and then ON the power. 2. Replace the Main Controller
PCB.
1. Replace the Main Controller PCB.
1. Turn OFF and then ON the power. 2. Reinstall the firmware. 3.
Replace the Main Controller PCB.
Install the firmware according to the model.
1. Turn OFF and then ON the power. 2. Replace the Main Controller
PCB.
1. Replace the Main Controller PCB.
Due to firmware error, the possibility of solving the error by replacing
the Main Controller PCB is low. Check the downloaded firmware
again.
1. Check the connection of the Fan 3. 2. Replace the Fan 3. 3. Re-
place the DC Controller PCB.
1. Check the connection of the Fan 1. 2. Replace the Fan . 3. Replace
the DC Controller PCB.
1. Check the connection of the Fan 4. 2. Replace the Fan 4. 3. Re-
place the DC Controller PCB.
1. Check the connection of the Fan 2. 2. Replace the Fan 2. 3. Re-
place the DC Controller PCB.
1. Check the connection of the Duplex Fan. 2. Replace the Duplex
Fan. 3. Replace the DC Controller PCB.
1. Check the connection of the Power Supply PCB or the connector.
2. Check the connection of the AC Relay PCB or the connector. 3.
Replace the Power Supply PCB. 4. Replace the AC Relay PCB.
1. Check the drawer connector between the Fixing Assembly and
the Power Supply PCB. 2. Replace the Fixing Assembly. 3. Replace
the Power Supply PCB.
159
8. Error/Jam/Alarm
Remedy