9 Maintenance
• Installing print cartridges
• Aligning print cartridges
• Automatically cleaning print cartridges
• Manually cleaning print cartridges
• Printing a test page
• View estimated ink levels
• Removing ink from skin and clothing
• Maintaining print cartridges
• Maintaining the printer body
• Printer toolbox
9.1 Installing print cartridges
Print cartridges
Always install the tri-color print cartridge in the
left
print cartridge cradle
compartment.
Install the black print cartridge in the
right
print cartridge cradle compartment.
Selection numbers
Before buying replacement print cartridges, verify the correct selection numbers in
the reference guide that came with the printer.
You can also find the selection number on the print cartridge you are replacing.
1. Selection number label
HP Deskjet 3740 series printer
44
