Lexmark T 430, Service Manual

Page: 101 / 249

Diagnostic aids
3-7
4048-1xx
DRAM Test
The purpose of this test is to check the validity of DRAM, both
standard and optional. The test writes patterns of data to SDRAM to
verify that each bit in memory can be set and read correctly.
To run the SDRAM Memory Test:
1. Select DRAM Test from the menu. The power indicator blinks
indicating the test is in progress.
xxx MB represents the amount of installed DRAM memory in
MB.
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 00000 displays with the
maximum fail count being
99,999
.
2. Once the maximum pass count or fail count is reached, the test
stops, the power indicator is turned on solid, and the final
results display. If the test fails, the message
DRAM Error
,
displays for approximately three seconds and the failure count
increases by 1.
Turn the power off if you want to stop the test before it completes.
DRAM Test xxx Mb
P:###### F:#####