Canon PIXMA MP500 Installation Instruction - Page 7

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Also for Canon PIXMA MP500: Specification Sheet (2 pages), Start Here (2 pages), Supplementary Manual (6 pages), Quick Start Manual (39 pages), Quick Start Manual (2 pages)

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Canon PIXMA MP500 Installation Instruction
If one or more of your ink cartridges cannot be recognized, please ensure that the cartridges are correctly placed on
the cartridges.
The most common cause of this issue is the blockage or damage of the LED as per page 8.
Ensure the printer lid is closed when checking cartridge recognition. Ambient light in some situations can affect the
LED sensors. Failure to close the lid while testing can result in cartridge recognition error messages.
To check that the LED's have not been damaged, bring the cartridges to the change position. Once in position
unclick and re-click into position all the cartridges. If the LED light of a cartridge is not functioning (flashing or
constant)it is most likely that the chip is faulty or damaged. In this case the chip may need to be replaced.
In unusual cases this message may appear if the chips have been mixed up and fitted to the incorrect CISS
cartridge.(i.e. Yellow OEM cartridge chip on a Blue CISS cartridge).The solution in this case is to remove all chips
and re-attach to OEM cartridges to identify which chip belongs to each colored cartridge