Epson LT - 286e - Manual (Page 23)

BIOS ROM Test
This test checks the data path of the BIOS ROM.
When the test completes successfully, you see this message:
System ROM module test passed.
Parity Test
This test checks for parity errors in memory.
During the test, DIAG displays these messages:
Testing from absolute memory location
xxxxxxxxh.
Checking for parity error.
When the parity test completes without an error, you see this
message:
Parity test passed OK.
Pattern Test
This test performs a read/write test of memory and identifies any
memory faults.
During the test, you see these messages:
Testing from absolute base xxxxxxxxh
Performing Pattern test in memory.
When the test completes successfully, you see this message:
Pattern test in memory passed OK.
18 System Diagnostics