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HP Designjet 650C Printers - Pen Start-up Problems

Under some circumstances it is possible for your color cartridges to sputter when first fired. They then recover very quickly.
This problem is associated with environmental factors, such as low humidity (central heating, cold weather etc.).
If you have a printer with Firmware Code Rev. 4.3 (or higher), the problem can be easily resolved.
You can check the Firmware Code Rev. in the menu Utilities/Statistics or in the configuration plot.
  • Switch the printer Off.
  • Press and hold the Access Pens key, while you switch the printer On.
  • Release the key after Initializing is displayed in the control panel.
  • The printer is now in the Heavy Service mode, which will produce the best plots possible in such environmental conditions.
  • To reset the printer to its normal state, switch the printer Off and On again.
  • Only use this printer mode when you are experiencing the problem described above.

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