Canon imageRUNNER ADVANCE 4551i Service Manual page 347

Item No.
General
5
6
7
Others 1
2
Check that the wiring of power cable/ signal cable to each option is properly installed.
Check that the fuse on each PCB does not burn out.
Check that there is no error in customer's usage method.
If moving the machine from the cold place such as storage etc to a warm place abruptly,
dew condensation is generated inside machine and it may cause various troubles.
• E100 occurs due to dew condensation on BD sensor.
• Low image density in the vertical scanning direction due to dew condensation on the
dust-proof glass.
• Low image density due to dew condensation on the reader CCD and copyboard glass.
• Paper feed failure due to dew condensation on the pickup feed guide.
If the symptom d appears, wipe the pickup/ feed unit with dry cloth.Moreover, if storing the
toner container/ developing assembly/ drum unit in the cold place and unpacking them
abruptly in warm place, dew condensation may be generated. To prevent dew condensa-
tion, place them in warm place sufficiently (for 1 to 2 hours) before unpacking.
Detail
334
6. Troubleshooting
Check