Canon A-200 series Service Manual page 125

Stand-alone diagnostic program
Since this stand-alone program is not controlled by the DOS, you cannot execute it by any of
DOS commands. To start-up the program, first remove the DOS disk (System Disk I) or any other
disk from the drive (if inserted) and then press the RESET button on the front panel of the com ­
puter, or turn the power of the computer off and then turn on again. Next, insert the Diagnostic
disk into the drive A, and the computer will begin to load this program automatically.
Then the following message will appear:
Canon Personal Computer DIAGNOSTIC
(C)
Copyright Canon Inc. 1984, Ver 1.0
Press any key to start
Once this message appears, it is indicated that the whole contents in the disk have been trans­
ferred into the internal RAM. So in order to prevent the disk from accidental destroying, you should
remove it from the drive.
The following is a general flow chart of this program.
Display opening
Message
Store the error
data Into RAM
Display Main
Menu
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