Lexmark X464de Service Manual - Page 128

DRAM Test, Serial 1 Wrap

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7014-xxx DRAM Test The purpose of this test is to check the validity of DRAM memory, both standard and optional. The test 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. Touch to select DRAM Test from the menu. The message DRAM Test Testing... displays. Then the message Resetting Printer appears, and the power indicator light blinks red. 2. Turn the printer off and on. While the DRAM test executes, the power indicator blinks green. The following type of message appears: DRAM Test

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3-22
Service Manual
7014-xxx
DRAM Test
The purpose of this test is to check the validity of DRAM memory, both standard and optional. The test 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.
Touch
to select DRAM Test from the menu.
The message
DRAM Test Testing…
displays. Then the message
Resetting Printer
appears, and
the power indicator light
blinks
red.
2.
Turn the printer off and on. While the DRAM test executes, the power indicator
blinks
green.
The following type of message appears:
•
xxx represents the installed DRAM size.
•
P:
######
represents the number of times the memory test has passed and finished successfully.
Initially 000000 displays with the maximum pass count being 999,999.
•
F:
#####
represents the number of times the memory test has failed and finished with errors. Initially
0000 displays with the maximum fail count being 99,999. Initially only four digits appear, but additional digits
appear as needed.
Each time a test is completed, the number of pass and failures increments. If the test fails, the message
Failure
displays for approximately three seconds, and the failure count increases by one.
The test continues until all standard and optional DRAM is tested. Once the maximum pass count or fail count
is reached, the test is stopped, the power indicator is turned on solid, and the final results display.
To stop the test before completion, turn the MFP off.
Serial 1 Wrap
This test is used to the serial port option card.. It only apears if the card is installed in the PCI slot.
To run the SERIAL 1 WRAP Test:
1.
Touch
to select
Serial 1 Wrap
from HARDWARE TESTS.
The message
Serial 1 Wrap Test Testing…
displays. Then the message
Resetting Printer
appears.
2.
The printer automatically performs a Power On Reset (POR). While the CACHE test executes, the power
indicator
blinks
green.
The following type of message appears:
3.
To stop this test before completion, turn the MFP off.
DRAM Test <###
P:######
F:####