HP 4600 Service Manual - Page 438
To initialize NVRAM, Resetting the calibration values for the DC controller, Hard disk initialization - color laserjet bypassing calibration
UPC - 808736060875
View all HP 4600 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 438 highlights
To initialize NVRAM 1 Turn the printer on and watch the control-panel display. 2 When the display shows the memory count, press and hold until all three lights on the control panel are lit. 3 Press . 4 Press PAUSE/RESUME (HP Color LaserJet 4600 models) or MENU (HP Color LaserJet 4610n and 4650 models). The message SKIP DISK LOAD appears on the control-panel display. 5 Press until NVRAM INIT is highlighted. 6 Press The printer initializes NVRAM and then continues its power-on sequence. Resetting the calibration values for the DC controller Performing an NVRAM initialization clears the calibration values from the formatter, but it does not clear the calibration values from the DC controller. If problems with color-plane registration persist after performing an NVRAM initialization, you should reset the calibration values for the DC controller. To reset the calibration values for the DC controller 1 Open the top cover. 2 Press and hold the engine test switch on the left side of the printer for several seconds. 3 Close the top cover, and observe the control-panel display. If the message Performing Calibration appears, the reset was successful. Hard disk initialization A hard disk initialization will erase and reformat the printer's hard disk. Perform hard disk initialization only if an error code appears on the control panel indicating an EIO disk error. Always try initializing the hard disk before replacing it. To initialize the hard disk 1 Turn the printer on. 2 As the printer performs its power-on sequence, press and hold the PAUSE/RESUME (HP Color LaserJet 4600 models) or MENU (HP Color LaserJet 4610n and 4650 models) button until all three lights on the control panel are lit. 3 Press . The message INITIALIZE DISK appears on the control-panel display. 4 Press The printer initializes the hard disk and continues its power-on sequence. Calibration bypass During certain diagnostic procedures, you need to bypass the automatic calibration that is performed whenever the printer is turned on. 422 Chapter 7 Troubleshooting ENWW