Canon A-200 series Service Manual page 128

Error Message: None. However, if displayed character is different from one you have just keyed
in, press liN" key and then ENTER key. The following message will appear:
Keyboard is not normal
Press any key to exit this check.
Pressing any key allows this test to return to EACH CHECK menu.
To exit this test: Press
''Y''
key and then ENTER key.
• DISK
RIW
CHECK
Description: The computer writes the specified data (06B6) onto all tracks on a disk and then
reads them. The written and read data will be compared. Before executing this program, be
sure to insert one or two disk(s) into the drive(s). Note that this program destroys the contents
of the disk(s). So you should not use the disk(s) which contains important data or programs.
Press [A] key to check drive A
Press
[B]
key to check drive B
Press [ESC] key to exit
will appear. Press appropriate key in response to above prompt.
Error Message:
Disk R/W error !
WXYYZ
Press any key to return
where W is a drive number,X is a head number, YY is a track number and Z is a sector number.
To exit this test: After the prompt below, press any key then ESC key. The test will return to EACH
CHECK Menu.
Drive check OK !
Press any key to return
• CRT
Check
Description: Various patterns of display will be indicated on the display monitor. The computer
asks you identities of information at every screen. This test is divided into some sections accord­
ing to the type of display adapter board. Following illustrations show the information to be dis ­
played. If your A-200 is a monochrome display version, another items than an attribute check
and 80
x
25 character set check will not be performed.
Monochrome Version
125