Lexmark MS415

If the hardware test fails, replace the failing part.

Panel Test

This test verifies the control panel display function.

To run the Panel test:

1. From the Diagnostics menu, navigate to: Hardware Tests > Panel Test
2. Press X to exit the test.

Button Test

This test verifies the control panel button function except for the Sleep button.

To run the test for the 510dn or 610dn:

1. From the Diagnostics menu, navigate to: Hardware Tests > Button Test
2. The panel displays Press and an icon matching one of the control panel buttons. Press the physical button that is represented by the icon, and the printer tests the function of that button. If the test is successful, then the panel displays another icon to test. If a button fails the test, or if a different button is pressed, then the panel displays Test Failed and returns to the main section of the Hardware tests menu. After three seconds of inactivity, the panel automatically returns to the main section of the Hardware tests menu. If all buttons pass the test, then the panel displays PASSED and returns to the main section of the Hardware tests menu.
3. Press X or Back to exit the test.

To run the test for the 610de:

1. From the Diagnostics menu, navigate to: Hardware Tests > Button Test
2. With no buttons pressed, a pattern matching the control panel buttons is displayed. Press each control panel button one at a time, and the panel highlights the represented button in the matching pattern.
3. Release the button, and the highlight disappears. 4 Press X or Back to exit the test.

DRAM Test

This test checks the validity of DRAM, both standard and optional. The test repeatedly writes patterns of data to the DRAM to verify that each bit in the memory can be set and read correctly.

To run the DRAM test:

1. From the Diagnostics menu, navigate to: Hardware Tests > DRAM Test
2. Testing… appears, followed by Resetting the Printer.
3. After the printer resets, the results of the test appear: DRAM Test [x] P:###### F:######.
   • [x]—Represents the size of the installed DRAM.
   • P:######—Represents the number of times the memory test has passed and finished successfully, with the maximum pass count being 999,999.
   • F:#####—Represents the number of times the memory test has failed and finished with errors, with the maximum fail count being 999,999.
4. After the maximum pass count or fail count is reached, or when all the DRAM has been tested, the test stops and the final results appear.

Serial Wrap Test

Use this test to check the operation of the Serial Port Hardware using a wrap plug. Each signal is tested. If the test fails, replace the controller board.

To run the Serial Wrap Test:

1. Disconnect the serial interface cable, and install the wrap plug.
2. From the Diagnostics menu, navigate to HARDWARE TESTS >Serial Wrap Test.
3. Select the appropriate Serial Wrap Test from the list. Values may include Serial Wrap, Serial 1 Wrap, Serial 2 Wrap, or Serial 3 Wrap. Each time the test finishes, the screen updates with the result. P and F represent the same numbers for DRAM. If the test passes, the Pass Count increases by 1. However, if the test fails, one of the following failure messages appears for approximately three seconds, and the Fail Count increases by 1:
4. Press Stop (X) to cancel the test.

USB HS Test Mode

1. From the Diagnostics menu, navigate to: Hardware Tests > USB HS Test Mode
2. Choose the desired port, and then choose the desired test.
3. To exit the test, POR the printer.
4. If the test fails, replace the failing USB cable.