Epson 20 - Page 8

Appendixes
A Troubleshooting
.................................
A-1
Error Messages
A-1 ....................................
The Computer Won’t Start
..........................
A-2
A-2
The Computer Locks Up
...........................
Monitor Problems
................................. A-3
Diskette Problems
.................................
A-4
Hard Disk Problems
...............................
A-5
Software Problems
.................................
A-6
Printer Problems
.................................. A-7
Option Card Problems
.............................
A-7
-
B Power-on Diagnostics
............................ B-1
System Device Check
..............................
B-1
Clock and CMOS RAM Check
.....................
B-2
RAM Check .....................................
B-3
Keyboard Controller and Keyboard Check
............. B-3
Display Card Check
...............................
B-4 -
Optional RAM Check
.............................
B-4
Floppy Disk Drive Seek Check
.......................
B-4
Hard Disk Controller and Hard Disk Check
........... B-5
C
Performing System Diagnostics
................... C-1
Starting System Diagnostics
......................... C-1
Modifying the DEVICE LIST
....................... C-3
Selecting a Test
C-5
....................................
Resuming From an Error
........................
C-6
System Board Check
...............................
C-7
Memory Check
...................................
C-7
Keyboard Check
..................................
C-8
Monochrome Display Adapter and CRT Check
........
C-9
Monochrome Adapter Check
....................
C-10
Attribute Check
...............................
C-10
Character Set Check
...........................
C-11
Video Check
.................................. C-11
Sync Check
.................................
C-11
Run All Above Checks
C-12 .........................
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