Hardware Tests; Dram Test; Serial Wrap Test - Lexmark 6500E Service Manual

To run the Button Test:
1
From the Diagnostics menu, navigate to HARDWARE TESTS > Button Test.
With no buttons pressed, an image the control panel buttons is displayed. Press each control panel button one at
a time, and the button in the illustration turns blue.
2
Press Stop or touch 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 DRAM
to verify that each bit in memory can be set and read correctly.
To run the DRAM Test:
1
From the Diagnostics menu, navigate to HARDWARE TESTS > DRAM Test.
DRAM Test Testing... appears on the screen, followed by Resetting the Printer.
2
After the printer resets, the results of the test appear: DRAM Test (x)MB 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.
Once the maximum pass count or fail count is reached, or once 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.
Note: This test is listed only if the serial option ISP card is installed.
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:
•
Receive Status Interrupt Error
•
Status Error
• Receive Data Interrupt Error
•
Transmit Data Interrupt Error
•
Transmit Empty Error
• Threshold Error
•
Receive Data Ready Error
•
Break Interrupt Error
Service menus
49
4036