Epson Progression U12 - Manual (Page 139)

System diagnostic tests (continued)
Device Tests available Description
Video Adapter Adapter check Tests the operation of the
Attribute check built-in VGA display adapter
Character set check
Graphics mode check
Screen paging check
Sync check
Run all above checks
LPT1 or LPT2
Printer Test(s)
Tests the operation of the
selected dot matrix printer
and prints a test pattern
* The Write, read check destroys data on the disk. Be sure to back up data
on a hard disk or insert a blank, formatted diskette before running this test.
Error Messages
The following table lists all the error messages that may appear
during System diagnostic testing.
System diagnostic error messages
Error code
System board
0101
0102
0103
0104
0105
0105
0106
0107
0108
0108
0108
0109
0110
0111
Message
CPU error
ROM checksum error
Timer counter register error
Timer counter error
Refresh error
DMA controller register error
DMA page register error
Refresh error
Keyboard controller timeout error
Keyboard controller self diagnostic error
Keyboard controller write command error
CMOS checksum error
CMOS shutdown byte error
CPU Instruction error
5-8 Running System Diagnostics