E240; E243; E248 - Canon iR5000 Service Manual

CHAPTER 4 TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS
CCD unit, Reader controller PCB
2) Try replacing the CCD unit. Is the problem corrected?
YES: End.
NO:

4.1.22 E240

Wiring
1) Is the wiring from the main controller PCB to the DC controller
PCB normal?
YES: End.
DC controller PCB, Main controller PCB
2) Try replacing the DC controller PCB. Is the problem corrected?
YES: End.
NO:

4.1.23 E243

Wrong operation
1) Turn off and then on the power switch. Is the problem corrected?
YES: Check the operation once again; if normal, end the work.
Control panel CPU PCB, Main controller PCB
YES: End.
NO:

4.1.24 E248

EEPROMs
1) Are the EEPROMs connected securely to the sockets of the reader
controller PCB?
NO:
Data (faulty)
2) Execute the following in service mode:
COPIER>FUNCTION>CLEAR>R-CON. Is the problem cor-
rected?
Thereafter, be sure to enter the service mode data.
YES: Check the operation; if normal, end the work.
EEPROM, Reader controller PCB
3) Try replacing the EEPROM. Is the problem corrected?
Thereafter, be sure to enter the service mode data newly.
YES: End.
NO:
4-28 T
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Check the wring; if normal, replace the reader controller PCB.
Check the wiring; if normal, replace the main controller PCB.
Check the wiring; if normal, replace the main controller PCB.
Connect them securely.
Check the wiring; if normal, replace the reader controller PCB.
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