Entering the Service Tests Menu (this is not the Service Utility Menu used for calibrations).

1. Make sure the printer is switched OFF from the power switch on the front of the printer and NOT from the power switch on the back of the printer.

 

2. Hold the COLOR key down and switch the printer ON using the front power switch. Continue to hold down the COLOR key until the message “Initializing” is displayed on the front panel.  Then release the COLOR key.

 

3. Once inside the Service Tests Menu use the Arrow keys to scroll through the “Service Tests” selections.

 

4. Press the Enter key to begin a specific test when the required Service Test is highlighted.

 

NOTE:  If the printer is not used for 3 minutes, the printer hangs and you must repeat the above steps to enter the Service Mode again.

 

In some cases a quick press of a button may not be recognized by the Printer.  When pressing a button, be sure to press it deliberately and firmly.

 

If the printer hangs up during a test, switch the printer OFF and restart from step 1.

 

Electronic Systems Test

  1. In the Service Tests submenu, scroll to “1 Electronic Systems” and press Enter.
  2. The test will start and the following sequence of messages will appear on the front panel:
    EEROM functionality
    ACMEEP DMA functionality
    Fans test
    Main PCA to ISS Communication
    ISS shift register
    DRAM access functionality
    Trailing cable test
    Yuyu R/W
    Carriage ADC
    Pen continuity digital Cyan/Magenta/Yellow/Black
    Pen digital functionality
    Pen analog continuity
    VPP regulation Cyan/Magenta/Yellow/Black
    Line sensor zero test

NOTE:  If  “ELECTRONIC SYSTEMS Tests passed” APPEARS ON THE FRONT PANEL, DO NOT REPLACE THE ELECTRONICS MODULE, MAIN PCA, TRAILING CABLE OR THE CARRIAGE ASSEMBLY.

 

  1. If the test fails:
    Electronics Failure
    If there is a problem with the components within the Electronics module then the front panel will display “Possible failure on 1. Electronics Module”.
    In this case, replace the     Main Logic Board 
     
  2.  Note:  The logic board is a direct replacement for the Designjet 1050C Plus and 1055CM Plus. If the plotter you are repairing is the Designjet 1050C (not Plus) you will also need to replace the memory and the firmware.  
     
  3. If you are repairing a Designjet 1055CM (not Plus) you will have to replace the Hard Disk Drive also.  The firmware is identical for the 1050C Plus and 1055CM Plus

     Note: The aerosol fan is not used in the Designjet 1050C Plus or 1055CM Plus.  Coil the cable out of the way or completely remove the fan.

         WARNING  TAKE CARE WHEN CONNECTING THE TRAILING CABLE TO THE ELECTRONICS MODULE OR CARRIAGE.  INCORRECT INSTALLATION WILL BURN THE FUSE IN THE ELECTRONICS MODULE, CAUSING THE COMPLETE FAILURE AND REPLACEMENT OF THE LOGIC BOARD.  100 OHMS OR HIGHER MUST BE SEEN AT THE TEST POINTS.  CONSULT THE SERVICE MANUAL FOR CORRECT PROCEDURE.

     
  4. DRAM Test Failure
    If there is a problem with the DRAM then the following message will appear on the front panel:
     
    “Possible Failure on     
    1. DRAM DIMMs     
    2. Electronics Module”

    In this case    , try one of the following:
    1. Switch the power OFF from the back of the printer and disconnect the power cord.          Reseat the DRAM DIMMs (memory modules), reconnect the power cord and perform Electronic Systems test again.
    2. If the test fails again, switch the power OFF, disconnect the power cord and replace the DRAM DIMMs), reconnect the power cord and perform Electronic Systems test again.
    3. Replace     the     Main Logic Board
  5. Trailing Cable Failure
    If there is a problem with the Trailing Cable then the following message will appear on the front panel:

    ”Possible Failure on:     
    1. Trailing Cable     
    2. Carriage
    3. Electronics Module”

    In this case, try one of the following:
    1. Make sure that the Trailing Cable is connected correctly.
    2. Power OFF the printer and connect a new Trailing Cable to the Carriage and the Electronics Module (without removing the old Trailing Cable from the Printer).      Perform the test again and if the test FAILS, then DO NOT replace the Trailing Cable.      If the test PASSES, replace the Trailing Cable.
     3. Power OFF the printer and connect a new Carriage to the Trailing Cable (without removing the old Carriage from the Printer).      Perform the test again and if the test FAILS, then DO NOT replace the Carriage.  If the test PASSES, replace the Carriage.
    4. . Power OFF the printer and connect a new Electronics Module to the Trailing Cable (without removing the old Electronics Module from the Printer).      Perform the test again and if the test FAILS, then DO NOT replace the Electronics Module or Main PCA.  If the test PASSES, Replace the Main Logic Board
    Carriage Test Failure
    If there is a problem with the Carriage and any related parts the the following message will appear on the front panel:

    ”Possible Failure on
    1. Printhead CYMK
    2. Trailing Cable
    3. Electronics Module”

    In this case, try one of the following:
    1. Remove the Printheads and clean the Carriage and Printhead flex circuits.      Reinstall the Printheads and try the test again.
    2. If the test fails, replace the printheads.
    3. Make sure that the Trailing Cable is connected correctly to the Carriage and to the Electronics Module.
    4. Power OFF the printer and connect a new Trailing Cable to the Carriage and the Electronics Module (without removing the old Trailing Cable from the Printer).      Perform the test again and if the test FAILS, then DO NOT replace the Trailing Cable.      If the test PASSES, replace the Trailing Cable.
     5. Power OFF the printer and connect a new Carriage to the Trailing Cable (without removing the old Carriage from the Printer).      Perform the test again and if the test FAILS, then DO NOT replace the Carriage.  If the test PASSES, replace the  Carriage.
    6. Power OFF the printer and connect a new Electronics Module to the Trailing Cable (without removing the old Electronics Module from the Printer).      Perform the test again and if the test FAILS, then DO NOT replace the Electronics Module or Main PCA.  If the test PASSES, Replace the Main Logic Board.
  6. EIO Card  (Ethernet connection to printer)
    Perform the EIO Card test as follows:
    1. In the Service Tests submenu, scroll to “2. EIO Card” and press Enter.
    2. If this test passes, do not replace the EIO Card.
    3. If there is a problem with the EIO Card then the test will fail and the following message will appear on the front panel:

    ”Possible failure on
    1. EIO Card
    2. Electronics Module”

    In this case, try the following:
    1. Switch the printer OFF.      Remove the external Hard Disk Drive (if installed) and reinstall the EIO Card making sure it installed correctly by pushing it firmly inwards and checking that the installation screws are tightened.  Repeat the EIO Card test.      If the EIO Card Test fails, then the EIO Card is faulty. Replace the EIO Card.
    2. If the EIO Card test passed after removing the external Hard Disk Drive, then switch the Printer OFF and reinstall the external HDD.      If the EIO Card test fails, replace the external Hard Disk Drive.
    3. If the EIO Card test continues to fail after replacing the EIO card or the external Hard Disk Drive, then replace the     Main Logic Board.

  7. Hard Disk Drive
    The purpose of this test is to verify the operation of the Hard Disk Drive
    Perform the Hard Disk Drive test as follows:
    1. In the Service Tests submenu, scroll to “3. Hard Disk Drive” and press Enter.
    2. If there is a problem with the Hard Disk Drive then the test will fail and the following message will appear on the front panel:

    ”Possible Failure on:
    1. HDD
    2. Electronics Module”

    Note: Check that a Hard Disk Drive is actually installed on your printer before starting to troubleshoot. (Print Configuration page) If a Hard Disk Drive is not installed, the test will always fail.

    3. Switch the printer OFF.      Remove the EIO Card (if installed)  and reinstall the Hard Disk Drive making sure it is installed correctly.  Repeat the Hard Disk Drive test.  If the Hard Disk Drive test fails again then replace the Hard Disk Drive.
    4. If the Hard Disk Drive Test passed after removing the EIO Card, then switch the printer OFF and reinstall the EIO Card and repeat the Hard Disk Drive test again.      If the Hard Disk Drive test fails, then replace the EIO Card.
    5. If the Hard Disk Drive test continues to fail after replacing the EIO Card or the Hard Disk Drive, then replace the     Main Logic Board.

  8. Ink Pressure System
    The purpose of this test is to verify the operation of the Tubes System and the Air Pressure System (APS)
    Perform the Ink Pressure System test as follows:
    1. In the Service Tests submenu, scroll to “4. Ink Pressure System” and press Enter.
    2. If the Tubes System test fails, the front panel will display:

    ”Possible failure on:
    1. Ink Cartridge CMYK
    2. Tubes
    3. Electronics Module”

    In this case, try one of the following:
    1. Replace ALL the ink cartridges
    2. Replace the complete     Tubes System
    3. Replace the     Main Logic Board
    If the APS test fails, the front panel will display:

    ”Possible failure
    1. APS
    2. Electronics Module”

    In this case, try one of the following:
    1. Check all the cables of the APS and make sure they are correctly connected and are not damaged.
    2. Check all the tubes of the APS and make sure they are not pinched or damaged.
    3. Replace all the ink cartridges.
    4. Replace the complete APS    .
    5. Replace the     Main Logic Board
  9. Scan Axis
    The purpose of this test is to verify the operation of the Scan Axis Motor
    You must perform the Scan-Axis test after:
    1. Scan axis Assemblies are disassembled or replaced
    2. Carriage is disassembled or replaced
    3. Electronics Module or Main PCA is replaced
    4. Tubes System is disassembled or replaced

    NOTE:  All the cover sensors are disabled when in the Service Tests Menu.  If the carriage is moving it will not stop if the window is opened.  Exercise due caution in the Service Test Menu mode.

    Perform the Scan Axis test as follows:
    1. In the Service Tests submenu, scroll to “5. Scan Axis” and press Enter.
    2. When the test is finished, a set of 5 numbers will be displayed on the front panel – record these numbers and press Enter.
    3. A second set of numbers will be displayed – record these numbers also.
    4. Check the numbers you recorded with the following table to verify the values are within limits:


 

Scan-Axis Forward

Scan-Axis Backward

 

Normal

Maximum

Normal

Maximum

Avg. PWM

165

185

-165

-185

Max. PWM

220

240

220

240

Stabilize Dist.

1800

2400

1800

2400

Avg. Speed offset

2.4

10

2.4

10

STD Speed offset

4.4

10

4.4

10


If the values obtained in the test are less than the Maximum values in the previous table, then the test has passed.

If the values obtained in the test are greater than the Maximum values in the previous table, the test has failed.  To resolve the problem, try the following:

1. Clean the Slider Rods and Apply Oil along the complete axis of the slider rods.  After applying the Oil, perform the test again.
2. Check that the encoder strip is clean.  If necessary, clean the encoder strip using a damp cloth.
3. Check that the Tubes System is installed correctly.
4. Check that the carriage belt and pulleys are installed correctly.
5. Replace the Scan-Axis Motor

  1. Paper Axis
    The purpose of this test is to verify the operation of the Paper Axis Motor
    Perform the test as follows:


Make sure you perform this test with NO media loaded.

1. In the Service Tests submenu, scroll to “6. Paper Axis” and press Enter.
2. When the test is completed, a set of numbers will be displayed on the front panel.