HP color laserjet 2550 series Manuale Di Servizio

PJL commands are useful when you have performed an NVRAM initialization or replaced
the formatter. After you perform an NVRAM initialization, restore the serial number, page
counts, color page counts, and formatter number.

Use the MS-DOS Editor to create a file (or files) to send directly to the printer to restore
printer data.

To send PJL commands directly to the printer, the printer must be directly connected to the
computer using an IEEE-1284-compliant parallel cable. PJL commands cannot be sent to
the printer by using a USB or a network connection.

Use the following PJL commands to restore the printer information to the new formatter:

ESC%-12345X@PJL SET SERVICEMODE=HPBOISEID

@PJL DEFAULT SERIALNUMBER=XXXXXXXXXXX

@PJL DEFAULT PAGES=XXX

@PJL DEFAULT COLORPAGES=XXX

@PJL SET SERVICEMODE=EXIT

ESC%-12345X

The X's in the serial number, formatter number, pages, and color pages fields are variables
that you must replace with your printer information. The Configuration page contains the
actual information for your printer.

To enter the PJL commands, you must use the MS-DOS Command Prompt and MS-DOS
Editor.

1. Click Start and then click Run.

2. Type 

cmd

 and then click OK.

An MS-DOS command prompt window opens.

3. At the command prompt, type 

cd\

 and then press Enter.

1. Click Start, click Programs, click Accessories, and then click MS-DOS Prompt.

An MS-DOS command prompt window opens.

2. At the command prompt, type 

cd\

, and then press Enter.

1. Click Start, click Programs, and then click MS-DOS Prompt.

An MS-DOS command prompt window opens.

2. At the command prompt, type 

cd\

, and then press Enter.

ENWW

Service mode functions