HP DesignJet L28500

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HP DesignJet L28500

Postby Expert » Thu Nov 04, 2021 11:36 am

Service Tests
Entering the Diagnostics Menu
  1. Make sure the printer is switched off with the Power key beside the Front Panel, and not with the power switch at the rear of the printer.
  2. Press and release the Power key to switch on the printer.
  3. Wait for about 10 seconds until the icons on the Front Panel appear, then press and release the Cancel, Home, and Help icons one after another.
    NOTE: Do not press the icons all at the same time: press each one in the order shown above and release each icon before pressing the next one.
  4. The icons on the Front Panel blink four times. Wait until the printer completes the initialization sequence and shows the Diagnostics menu.
  5. In the Diagnostics menu, you can scroll up and down by sliding your finger vertically. Select an option by pressing it. In some cases a quick press may not be recognized by the printer; to select an option, press it deliberately for about one second.
The Diagnostic Tests and Utilities work in a special mode that does not require full initialization of the printer. Therefore, whenever you have finished a test, you must turn off the printer and turn it on again before trying to print or before executing another test. Also turn off the printer if it hangs up during a test.
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Expert
Posts: 25
Joined: Sat Oct 21, 2017 9:35 pm

Re: HP DesignJet L28500

Postby Expert » Thu Nov 04, 2021 11:46 am

Service Tests
Electronics Control
The purpose of this test is to diagnose a failure in the operation of the:
• Components of the Electronics Module.
• Electronics Module to Carriage and ISS Communication.
NOTE: This test does not test the Hard Disk Drive.

Procedure
  1. Go to Diagnostic test > 1. Electrical System > 1.1 Electronics Control, and press OK.
  2. A message will display on the Front Panel asking whether you would like to check the Formatter. Select Yes, and press OK to confirm your selection.
  3. The printer will get the CPU information and display the information on the Front Panel. Press any key to continue the test.
  4. The printer will now get the CPU Fan Speed and display the information on the Front Panel. Press any key to continue the test.
    If the CPU Fan Speed is less than 2500, the Front Panel will display system error code 05.1:10
  5. The printer will now calculate the amount of memory installed and display the information on the Front Panel. Press any key to continue the test.
    A minimum of 256 megabytes of memory must be installed in the printer. If not, the Front Panel will display system error code 05.3:10.
  6. A message will display on the Front Panel asking whether you would like to check the printer Configuration. Select Yes and press OK to confirm your selection.
  7. The Printer will start the CDS and the following information will be displayed on the Front Panel:
    • Starting CDS.
    If there is a failure at this point, the Front Panel will display system error code 79:03
  8. The printer will then check the Serial Number and Part Number and display the information on the Front Panel. Press any key to continue the test.
    If the Serial Number does not have assigned a correct 10 character format or the Part number does not have assigned a correct 6 character format, a fail message will display on the Front Panel. In this case, re-enter the Service Tests submenu and use the diagnostic ‘Error 71:19 Recovery’ to set the correct Serial Number.
  9. A message will display on the Front Panel asking whether you want to check the Engine PCA. Select Yes and press OK. This action could take up to 10 minutes.
  10. The Printer checks the Engine PCA and the following messages will be displayed on the Front Panel:
    • Starting CDS
    • Checking Engine PCA
    • Starting Engine PCA
    • Checking Impact memory
    • Checking Gauntlet memory
    If there is a failure at this point, the Front Panel will display system error code 01.0:10
  11. A message will display on the Front Panel asking whether you would like to check the Power Supply. Select Yes and press OK to confirm your selection.
  12. The Printer will check various electrical subsystem.
  13. A message will display on the Front Panel asking whether you would like to check the PrintMech. Select Yes and press OK to confirm your selection.
  14. The Printer will check various electrical subsystem.
  15. 15. A message will display on the Front Panel stating that the delSol has been detected and asking whether you would like to Continue. Press any key to continue.
  16. A message will display on the Front Panel asking whether you would like to check the Interconnect. Select Yes and press OK to confirm your selection.
  17. The Printer will check the Interconnect PCA and the following messages will be displayed on the Front Panel:
    • Starting CDS
    If there is a failure at this point, the Front Panel will display system error code 79:03.
    • Getting unit config.
    If the current Part Number is not in the correct 6 character format, the Front Panel will display a fail message. In this case, re-enter in to the Service Tests submenu and use the diagnostic “14.2 Error 71:19 Recovery” to set the correct Serial Number.
    • Starting Tests GPIO
    If there is a failure at this point, the Front Panel will display system error code 01.0:10.
    • Checking GPIO channels
    At this stage, the printer reads and checks the default GPIO values in the Interconnect PCA when all the cables are connected and all the sensors give the default value or the current state. The results will be displayed on the Front Panel and you can press any key to scroll through the information.
    If any of the channels cannot be read, the Front Panel will display system error code 01.0:10.
  18. A message will display on the Front Panel asking whether you would like to check the Carriage Communication. Select Yes and press OK to confirm your selection.
  19. If you select Yes, the Front Panel asks whether the carriage supply LED has been switched on.

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