3-16 Service Manual
5061
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. Select DRAM Test from HARDWARE TESTS in the Diagnostics mode.
The power indicator blinks indicating the test is in progress and Reseting the Printer and DRAM Test
Testing… appears on the screen. The printer resets, but continues the test.
2. Press Back () or Stop ( ) to exit the test.
P:###### represents the number of times the memory test has passed and finished successfully. Initially
000000 displays with the maximum pass count being 99,999.
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.
Once the maximum pass count or fail count is reached, the test stops, the power indicator turns on solid, and the
final results appear. If the test fails, SDRAM Error appears for approximately three seconds and the failure count
increases by 1.
CACHE Test
The CACHE Test is used to verify the processor CACHE is functioning properly.
1. Select CACHE Test from HARDWARE TESTS in the Diagnostics mode.
The machine initiates a POR of the printer and Resetting the Printer and CACHE Test Testing… appears.
The power indicator light blinks.
Upon completion of the POR the following screen is displayed:
P:###### represents the number of times the CACHE test has passed, finished successfully.
Initially 000000 is displayed. The maximum pass count is 999,999.
F:###### represents the number of times the CACHE test has failed, finished with errors.
Initially 000000 is displayed. The maximum fall count is 999,999.
2. To exit the test, turn the printer off.
DRAM Test 128M
P:###### F:#####
CACHE Test x100
P:###### F:######
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