The most common error numbers are described both in the Lisa 1 Owner's Guide
(Appendix 3, p. I7 and Appendix 6, p. I25), and in the Lisa 2 Owner's Guide
(Appendix 3, p. G59, and on pp. C49-C58). These error messages usually
simply indicate a general problem.
Other more specific error messages are located in the Workshop manual. There
are three types of error numbers that can be displayed:
1. A single number: xxx
This may be located in the Workshop manual. The number means the
error occured in code located in the Filer. The only exception is if the
number starts with a 6 (e.g., 648), in which case the error is related to
2. Two numbers: xxx/xxx
The first number refers to a location in the lower levels of the operating
system; the second number is the error code. Sometimes these numbers are
reversed, so it's best to look up both in the Workshop manual.
3. Three numbers: xxx/yyy/zzz
xxx: Indicates the system program that died.
yyy: The error number indicating why it died.
zzz: The actual code address where the error occured.
If you get one of these three-number codes and the first one happens
to be a 1033, the second number indicates the problem:
Error Meaning Solution
7 I/O problem reinstall software
10 Parity Error replace memory
21, 22 program error none
26, 27 bad source, bad memory
Here are some other errors that occur during startup. These error numbers in
10700 range are usually accompanied by a crossed out Lisa. Following is a
list of these errors:
10725 Damaged file system or file contents
10726 Profile error, problem with boot tracks
10727 Memory Error
10728 Boot file is missing or damaged
If you encounter one of the above errors:
1. Reinstall the startup software. Refer to p. D50 in the Lisa 1 Owner's
Guide, p. C24 in the Lisa 2 Owner's Guide or p. 160 in the Lisa (7/7)
Office System manual.
2. If step 1 doesn't work, repair the hard disk, then repeat step 1.
3. If step 2 doesn't work, you may have bad Office System diskettes.
Obtain another set, then try steps 1 and 2 again.
4. If steps 1 thru 3 haven't worked, you'll need to reload the software.
First, though, erase the information currently stored on your hard disk.
To save documents store on your hard disk:
1. Connect your Profile, if you're using one, to another Lisa and save any
files if you can. If you're using a Lisa 2/10, start up your system with
another ProFile, then save your documents to it.
2. Then reinstall your software on the hard disk, erasing the present
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