Epson Progression U12 - Manual (Page 138)

System Diagnostic Tests
The table below lists all the System diagnostic tests you can run
on your system.
System diagnostic tests
Device
System Board
Numeric
Coprocessor
System Memory
Diskette Drive(s)
A or B
Hard Disk
Drive(s) # 1 or #2
Serial Port(s)
COM1 or
COM2
Parallel Port(s)
LPT1 or LPT2
Tests available
Sequential seek check
Random seek check
Write, read check
l
Disk change check
Run all above checks
Seek check
Write. read check
l
Read, verify check
Run all above checks
Checks the system board
components
Tests the operation of any
built-in or optional math
coprocessor
Checks all memory and
displays a memory count
Tests the operation of the
selected diskette drive:
requires a formatted
diskette for some tests
Tests the operation of the
selected hard disk drive
Tests the selected serial
port; requires a loop-back
connector (contact your
dealer)
Tests the selected parallel
port; requires a loop-back
connector (contact your
dealer)
Running System Diagnostics 5-7