• Configuration information, including printer serial number, controller code level, engine code level, and
cartridge information.
• Default values for the QUALITY MENU settings used to print the pages.
HARDWARE TESTS
Panel Test
This test automatically toggles each pixel of the display or home screen, depending on your printer model,
through every contrast level beginning with the darkest to the brightest. This continues until you press the Stop
button.
Button Test
This test verifies the operation of the buttons on the control panel. When Button Test is selected, a diagram of
the control panel appears on the panel.
If you press a button on the control panel while running the test:
• Models T650, T652, and T654—Then x appears on the corresponding diagram. It only disappears when
the button is released.
• Model T656—Then the corresponding touch screen key is emphasized.
Depending on your printer model, touch Back or press the Back or Stop button to cancel the test.
DRAM Test
This test checks the validity of the standard and optional dynamic random access memory (DRAM). The test
repeatedly writes patterns of data to the DRAM to verify that each bit in the memory can be set and read
correctly.
1 From the Diagnostics menu, navigate to HARDWARE TESTS > DRAM Test.
Note: The printer performs the test and then resets.
2 After the printer resets, the results of the test appear: DRAM Test [x] P:###### F:######.
Where:
• [x] represents the size of the installed DRAM.
• P:###### represents the number of times the memory test passed and finished successfully.
The maximum pass count is 999,999.
• F:##### represents the number of times the memory test failed and finished with errors.
The maximum pass count is 999,999.
Note: After the maximum pass or fail count is reached or when all the DRAM has been tested, the test
stops and the final results appear.
3 To stop the test before completion, turn o the printer.
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