• Code: 10.00.34
• Display: 10.XX.34 Used supply in use
• Description: The indicated cartridge is used.
  Black print cartridge
• Remedy: NOTE: Removing a cartridge from one product and then installing it in a different product (for testing functionality) will cause this event code.

• Code: 10.00.35
• Display: Incompatible <supply>
• Description: The indicated supply <supply>is not compatible with this product.
  Black print cartridge
• Remedy: Replace the supply with one that is designed for this product.

• Code: 10.00.35
• Display: 10.YY.35 Incompatible <supply>
• Description: The indicated supply is not compatible with this product.
  Black print cartridge
• Remedy: CAUTION: The fuser might be hot. Be careful when removing the fuser. Install a supply that is designed for this product.

• Code: 10.00.40
• Display: 10.XX.40 Genuine HP supplies installed
• Description: More than one genuine HP print cartridge has been installed.
  Black print cartridge
• Remedy: No action necessary.

• Code: 10.00.41
• Display: 10.XX.41 Unsupported supply in use
• Description: The indicated print cartridge is for a different product.
  Black print cartridge
• Remedy: Remove the indicated print cartridge, and then install the correct cartridge for this product.

• Code: 10.00.60
• Display: <Supply> low OR Supplies low
• Description: The product indicates when a supply level, or more than one supply, is low. Actual print cartridge life might vary. You do not need to replace the print cartridge at this time unless print quality is no longer acceptable. When multiple supplies are low, more than one event code is recorded.
  Black print cartridge
• Remedy: If print quality is no longer acceptable, replace the supply. HP recommends that the customer have a replacement supply available to install when print quality is no longer acceptable.

• Code: 10.00.70
• Display: <Supply> very low OR Supplies very low
• Description: The product indicates when a supply level, or more than one supply, is very low. Actual print cartridge life might vary. You do not need to replace the print cartridge at this time unless print quality is no longer acceptable. When multiple supplies are low, more than one event code is recorded.
  Black print cartridge
• Remedy: If print quality is no longer acceptable, replace the supply. HP recommends that the customer have a replacement supply available to install when print quality is no longer acceptable.

• Code: 10.00.70
• Display: 10.XX.70 Printing past very low
• Description: The product indicates when a supply level is very low. The actual remaining print cartridge life might vary. You do not need to replace the print cartridge at this time unless print quality is no longer acceptable.
  Black print cartridge
• Remedy: If print quality is no longer acceptable, replace the indicated print cartridge. See the parts chapter in the service manual for the correct cartridge part number.