HP LaserJet 4300 Series Spezifikationen PDF herunterladen (Seite 271)

Q2431-90912 Chapter 7 Troubleshooting 251

Printer resets and power-on modes

Cold reset

A cold reset unlocks menus that have been previously locked and sets all control panel menu

items (including EIO settings) back to the factory defaults. However, it does not clear the values

in the service menu (such as the serial number and page counts).

Note Before performing a cold reset, print a menu map and a configuration page (see “Menu map” on

page 240 and “Configuration page” on page 241). Use the information on the configuration page

to reset any customer-set printer configuration values that the cold reset procedure changes.

To perform a cold reset

1. Turn the printer power off.

2. Hold down the S

ELECT ( ) button, and then turn the printer power on. Continue holding

down the S

ELECT ( ) button until all three printer control-panel lights flash once and then

remain on. This might take up to 10 seconds.

3. After the message SELECT LANGUAGE appears on the display, press the U

P ARROW ()

button or the D

OWN ARROW ( ) button until COLD RESET is highlighted.

4. Press the S

ELECT ( ) button. The printer performs a cold reset and then continues its

power-on sequence.

5. Check all I/O settings and reset any customer-set printer configuration values.

NVRAM initialization

CAUTION Initializing the NVRAM resets the serial number, the event log, the page counts, and the EIO card

(Initializing the NVRAM will reset service menu values to factory defaults). Use the service menu

to restore the serial number and page counts. Also reconfigure any computers that print to this

printer so that the computers can recognize the printer. Initialize the NVRAM only when absolutely

necessary. In most situations, use a cold reset rather than a NVRAM initialization to reset printer

settings (this will retain the values in the service menu).

Note Before performing a NVRAM initialization, print a menu map and a configuration page (see “Menu

map” on page 240 and “Configuration page” on page 241). Use the information on the

configuration page to reset any customer-set printer configuration values that the NVRAM

initialization procedure changes. Take special note of the total page count, maintenance count,

and the serial number.

To initialize NVRAM

1. Remove any installed accessories (for example, a stapler/stacker).

2. Turn the printer power off.

3. Hold down the D

OWN ARROW ( ) button, and then turn the printer power on. Continue

holding down the D

OWN ARROW ( ) button until all three printer control panel lights flash

once and then remain on. This might take up to 10 seconds.

4. Press the U

P ARROW ( ) button.

5. Press the P

AUSE/RESUME button. The display should show SKIP DISK LOAD.

6. Press the U

P ARROW ( ) button until NVRAM INIT is highlighted.

7. Press the S

ELECT ( ) button. The printer initializes NVRAM and then continues its

power-on sequence.

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