You must identify which cartridge printed which part of the self-test report, so that if you find defects on the report, you will know which cartridge is the problem.
Note though that different combinations of print cartridges can be installed in your printer, and different cartridge combinations print different patterns. Your self-test report may not look exactly like the picture below, but the right and left cartridges will print in the same areas of the report no matter which cartridges are installed.
note:
If there are no specific color blocks, refer to cyan, magenta, and yellow for mixing.
Figure : Self-test report layout (the patterns in each area may look slightly different on your report)
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Printed by the left cartridge
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Printed by the right cartridge