Printer Testing Howto

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Epson Inkjet

For Stylus C82

You can run a printer check to determine whether a problem comes from the printer itself or some other source. Follow these steps to run the printer check:

1. Make sure both the printer and computer are turned off.

2. Disconnect the interface cable from the printer.

3. Make sure paper is loaded in the printer.

4. Hold down the Paper button, and turn on the printer. Continue holding down the Paper button until the green power light starts to flash, then release it. The printer prints one page showing its ROM version number, the percentage of ink in each cartridge, and a nozzle check pattern.


If the pattern has gaps in its dots, you need to clean the print head.


5. To end the check, turn off the printer after it prints the check page. Then reconnect the interface cable and turn on your printer and computer. If the check page prints, the problem probably lies in your software settings, the interface cable, or your computer. If the check page doesn't print, you should contact EPSON technical support.

HP Deskjet

For Deskjet 810C an 803C Printers

Method 1: Print a sample page

  1. Turn the HP DeskJet 810C and 830C series printer off and remove the cable that connects the printer to the computer.
  2. Turn the printer back on.
  3. Press and hold the Resume (bottom) button for approximately 5 seconds.
  4. The sample page should look like the illustration below (see Figure 1).
  5. NOTE: The printouts for the HP DeskJet 830C series printers will look like the following samples, with the exception that they will reflect the different model, driver, and performance specifications of this printer.

Figure 1: HP DeskJet 810C series printer sample page

           example [[Image:]]

Method 2: Print a self-test page

  1. Turn the printer off and remove the cable that connects the printer to the computer.
  2. Turn the printer back on.
  3. Press and hold the Power (top) button. Press the Resume button 4 times and then release the Power button.
  4. The self-test page will print with a report containing the printer model name and serial number. It will look like the illustration shown below (see Figure 2).

Figure 2: HP DeskJet 810C series printer self-test page

     example 

The self-test produces the following information:

Printer information Purpose Diagonal Self-Test Pattern Verify that all nozzles on the print cartridge are firing. If a gap appears along the diagonal self-test pattern, one or more nozzles are not firing.

Printer Internal Information Identify the printer and firmware for determining possible problems. Printer model name Serial number Software installation date or "born on date"

Firmware revision

Page count



HP Laserjets

HP Laserjet 8000, 8100, and 8150 Series

1. Hold down SELECT and JOB CANCEL while powering on the printer, until all lights are illuminated and the Display is blank. (If the Display Panel reads INTERNAL TEST at this point, the keys were released too soon. Repeat this step until successful.) 2. Press MENU, then SELECT. The message SERVICE MODE is displayed briefly, then the printer automatically begins an INTERNAL TEST. After several seconds, both Control Panel Indicators turn off. (The printer may display WARMING UP if it has not warmed up completely.) After the printer has warmed up and passed the self test, SERVICE MODE is displayed. 3. Press MENU once to display SERVICE MENU. 4. Once it says SERVICE MENU press ITEM to scroll through service mode items. To exit the Service Mode press GO.

HP Laserjet 5si

1 Hold down [Items] and [+] while powering ON the printer, until all lights are illuminated and the Display is blank. (If the Display Panel reads INTERNAL TEST at this point, the keys were released too soon. Repeat this step until successful.) 2 Press [Select]. The message SERVICE MODE is displayed briefly, then the printer automatically begins an INTERNAL TEST. After several seconds, both Control Panel Indicators turn OFF. (The printer may display WARMING UP if it has not warmed up completely.) After the printer has warmed up and passed the self test, SERVICE MODE is displayed. 3. Press [Menus] once to display SERVICE MENU. 4. Once it says SERVICE MENU press ITEM to scroll through service mode items. To exit the Service Mode press [On Line].

HP Laserjet 4V and 4MV

1. Hold down the [On Line], [Form Feed], and [Enter] keys while powering ON the printer, until all lights are illuminated and the Display Window is blank. (If the Display Window reads 05 SELF TEST at this point, the keys were released too soon. Repeat this step until successful.) 2. Press the [Form Feed] key, then the [Enter] key. The message SERVICE MODE is displayed briefly, then the printer automatically begins a 05 SELF TEST. After several seconds, both Control Panel Indicators turn OFF. (The printer may display 02 WARMING UP if it has not warmed up completely.) After the printer has warmed up and passed the self test, SERVICE MODE is displayed. 3. Press [Menus] once to display SERVICE MENU. 4. Once it says SERVICE MENU press ITEM to scroll through service mode items. To exit the Service Mode press the [On Line] key.

HP Laserjet 5000 series

1. Hold down [Select] and [Cancel Job] while turning on the printer. (If the control panel reads INITIALIZING, the keys were released too soon.) 2. Press the right side of the [Menu] key, then press [Select]. The message SERVICE MODE is displayed. 3. Press [Menus] once to display SERVICE MENU. 4. Once it says SERVICE MENU press ITEM to scroll through service mode items. To exit the Service Mode press [Go].

HP Laserjet 4100 series

1 While turning on the printer, hold down SELECT and CANCEL JOB until all of the lights on the control panel are lit. 2 Press the right side of the MENU key, then press SELECT. The message SERVICE MODE temporarily appears and will reappear when the printer completes the initialization process. 3. Press [Menus] once to display SERVICE MENU. 4. Once it says SERVICE MENU press ITEM to scroll through service mode items. 5. To exit the service mode, press GO. Note: If READY appears in the control panel, the keys might have been released too soon, or the wrong keys were pressed.

HP Laserjet 4000 and 4050 series

1 Hold down [Select] and [Cancel Job] while turning on the printer until all of the lights on the Control Panel are lit. (If the Control Panel reads INITIALIZING, the keys were released too soon.) 2 Press the right side of the [Menu] key, then press [Select]. The message SERVICE MODE is displayed. 3. Press [Menus] once to display SERVICE MENU. 4. Once it says SERVICE MENU press ITEM to scroll through service mode items. 5. To exit the Service Mode press [Go].


HP Laserjet 4 and 4 plus series

1. Hold down the [On Line], [Form Feed], and [Enter] keys while powering ON the printer, until the ON LINE and FORM FEED indicators are both illuminated and the Display Window is blank. (If the Display Window reads 05 SELF TEST at this point, the keys were released too soon. Repeat this step until successful.) 2. Press the [Form Feed] key, then the [Enter] key. The message SERVICE MODE is displayed briefly, then the printer automatically begins a 05 SELF TEST. After several seconds, the ON LINE and FORM FEED lights turn OFF. (The printer may display 02 WARMING UP if it has not warmed up completely.) After the printer has warmed up and passed the self test, SERVICE MODE is displayed. 3. Press [Menus] once to display SERVICE MENU. 4. Once it says SERVICE MENU press ITEM to scroll through service mode items. 5. To exit the Service Mode press the [On Line] key.

HP Laserjet 5 series

1. Hold down the Menu+ and Value+ keys while powering on the printer. Hold the keys down until SERVICE MODE is displayed. 2. The interrupted power-on self test is resumed. If the test completes successfully, the message SERVICE MODE is displayed. 3. To exit service mode, press the Go button.

Laserjets 5P, 6P, 2100, 2200 and other printers that do not have a display panel (LEDs only)

These models are designed as low volume personal printers and do not have a maintenance count that needs to be reset or a readily accessible service mode. You can cold reset these printers or completely reinitialize the NVRAM (nonvolatile ram) to factory defaults. Cold resetting will reset most of the system parameters to factory defaults and reinitializing the NVRAM will reset ALL system parameters to the factory defaults. Also, there is a service mode for these printers but it is only accessible through software using PJL service mode commands. Buy the printer's service manual if you want to learn more.

HP Laserjet 5L, 6L, 1100, 1200 do not have a service mode. You can only perform a cold-reset and continuous self-test.