Canon ImageRunner iR8500 Series, Service Manual, Page: 819 / 1122

Chapter 16
16-23
0004 There is a connection error. - Check the connection the cable.
- Replace the cable.
- Check the power source of the MAU.
- Replace the MAU.
- Replace the TokenRing board.
0005 Other Errors
E746 The accessories board is of the wrong type.
0003 At startup, a board for a different model has
been detected.
- Replace the UFR board of the correct type (model).
E748 Mismatch in controller board and SDRAM size
1001 There is a mismatch between the control board
and the SDRAM.
- Check the correct combination between main
controller PCB and SDRAM.
E800 There is an error in the auto power-off circuit.
0000 An open circuit is detected in the auto power-
off circuit for 3 sec or more.
- Turn on the power once again.
- Check if the connector (J505) of theDC controller PCB
is mounted properly.
- Check if the connector (J1719) of the relay PCB is
mounted properly.
- Replace the relay PCB.
- Replace the DC controller PCB.
E804 There is an error in the system fan/the power supply cooling fan (1 and 2).
0000 The lock signal is detected for 5 sec or more
although the power supply cooling fan (1 and
2) is being driven.
- Check if there is no foreign material in the rotation
assembly of the power supply cooling fan (1 and 2) fan.
- Check if the connector (J505) of the DC controller
PCB is mounted properly.
- Replace the power supply cooling fan (1/2).
- Replace the DC controller PCB.
0004 The reading of the ambient temperature of the
main controller is 80 degrees or higher.
- Check if there is no foreign material in the rotation
assembly of the system fan.
- Check if the connector (J1028) of the main controller
PCB is mounted properly.
- Replace the sysytem fan.
- Replace the main controller PCB.
Caution
In the case of a fault in the system fan, the data will be
indicated in the form of an alarm (0008040004;
ALARM-2).
E805 The rotation of the fixing assembly heat discharging fan and separation heat discharging fan is faulty.
0001 The lock signal is detected for 5 sec or more
although the fixing assembly heat discharging
fan is being driven.
- Check if there is no foreign material in the rotation
assembly of the fixing assembly heat discharging fan.
- Check if the connector (J503) of the DC controller
PCB is mounted properly.
- Replace the fixing assembly heat discharging fan.
- Replace the DC controller PCB.
0002 The lock signal is detected for 5 sec or more
although the separation heat discharging fan is
being driven.
- Check if there is no foreign material in the rotation
assembly of the separation heat discharging fan.
- Check if the connector (J1112) of the reader controller
PCB is mounted properly.
- Replace the separation heat discharging fan.
- Replace the reader controller PCB.
E820 The rotation of the drum fan is faulty.
0000 The lock signal is detected for 5 sec or more
although the drum fan is being driven.
- Check if there is no foreign material in the rotation
assembly of the drum fan.
- Check if the connector (J512) of the DC controller
PCB is mounted properly.
- Replace the drum fan.
- Replace the DC controller PCB.
E823 The rotation of the pre-transfer charging assembly fan is faulty.
0000 The lock signal is detected for 5 sec or more
although the pre-transfer charging assembly
fan is being driven.
- Check if there is no foreign material in the rotation
assembly of the pre-transfer charging assembly fan.
- Check if the connector (J504) of the DC controller
PCB is mounted properly.
- Replace the pre-transfer charging assembly fan.
- Replace the DC controller PCB.
E824 The rotation of the primary charging assembly fan is faulty.
0000 The lock signal is detected for 5 sec or more
although the primary charging assembly fan is
being driven.
- Check if there is no foreign material in the rotation
assembly of the primary charging assembly fan.
- Check if the connector (J503) of the DC controller
PCB is mounted properly.
- Replace the primary charging assembly fan.
- Replace the DC controller PCB.
E830 The rotation of the separation fan is faulty.
Code Cause Remedy