4.20 RUNNING THE DIAGNOSTIC TESTS
The Oiagn"ostic tests check the following subsystems:
A.
Front Panel assembly
t
B.
CPU
board
C.
CGP
board
o.
Channel board
The
SELECT
switch
and
the
YES
and NO switches are used
to
select a test and answer the prompts displayed
on
the LCD. When a
YES
or
NO
response is required by the diagnostic test, the YES and
NO switch LEOs will blink
on
and off alternately. When a
SELECT
response is required, the
SELECT
switch LED will be blinking
in
some instances, and no LEOs will be blinking
in
other instances.
When
no
LEOs are blinking, only the
SELECT
switch has an effect
when pressed.
Kurzweil 250 Service Manual, Chapter 4
4 -
33
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