Most common printers involved:
CLJ CM1015, 1017 – CLJ2600, 2605 – CLJ3000, 3600, 3800, CP3505, CLJ4600, 4650, CLJ4700, CP4005 CLJ5500, 5550 and a number of higher end single pass HP color printers.
Problem:
Either out of the blue or after replacing a laser scanner assembly, DC controller or formatter, having one (or more) colors print out of alignment.
In these printers, the DC controller along with formatter stores the scan parameters for each of the laser scanners. When one is changed, the stored settings are applied to the new component so in some cases may have one or more colors shifted in any X or Y axis compared to the other colors. When this occurs most technicians utilize the “CALABRATE NOW” function from the printer menus which we have had minimal success with.
Either out of the blue or after replacing a laser scanner assembly, DC controller or formatter, having one (or more) colors print out of alignment.
In these printers, the DC controller along with formatter stores the scan parameters for each of the laser scanners. When one is changed, the stored settings are applied to the new component so in some cases may have one or more colors shifted in any X or Y axis compared to the other colors. When this occurs most technicians utilize the “CALABRATE NOW” function from the printer menus which we have had minimal success with.
There is a DC controller calibration reset which is done by:
1. Have printer at ready state
2. Open toner access cover
3. Press and hold engine test button for 5 seconds
4. Close toner access cover
At this point it is suggested to then run the “CALABRATE NOW” function from the printer’s internal menu. In some cases we found you would have to power cycle the printer (off/on) for the reset to work.
If this listed procedure does not correct the CPR problem, perform a COLD RESET and secondly an NVRAM RESET.
