CGP STATUS TEST
TEST CGP
DMA? Press YES
During the CGP status test, the test status will be displayed
on the front panel
LCD as follows:
EXAMPLE:
CSW:DOOF
AL1:
E7F1
AL2:0000
In
the preceeding example, the CSW is the channel status word.
The four status digits are
in
hexadecimal. If the test
is
progressing
correctly:
1. The first CSW digit will usually vary from D to
F.
2. The second and third digits will increment
in
pairs from 00
to
FF.
3. The fourth CSW digit should always be
F.
4. AL 1 will count up from 0000 to FFFF and then stop. When
AL 1 reaches FFFF, AL2 will start counting
up
from 0000
to
FFFF and then stop. AL 1 will then begin counting
up
again
from
0000 to FFFF. AL 1 and AL2 will continue counting
up
alternately until
SELECT
is
pressed.
NOTE:
If the following LCD display appears and does not
change, it usually indicates that
no
sample clock is present
at the channel sample DAC:
CSW:
gOOF
AL1: 0010
AL2:
0000
If
this error occurs, check the ribbon cable connections going
from the
CPU board to the channel board. Also run the CPU timer
test.
Press SELECT
to
exit the
CGP
test.
Kurzwell 250 Service Manual, Chapter 4
4-21
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