4.17 - DIAGNOSTIC TEST PROCEDURE, REVISION D
Revision D Diagnostic
EPROMs are for use with Kurzweil 250,
Kurzweil 250X and Kurzweil RMX units with Version 3 or later
software installed. If the instrument
r
you are testing has less than
Version 3 installed, you
should test it with Revision B Diagnostics.
4.18 -
INSTALLING DIAGNOSTIC EPROMS
1.
Turn off system power
2.
Open the slide chassis.
3.
Remove U38 and U54 from the CPU board. Be careful when
removing these
EPROMs as you will be reinstalling them
when the testing is
complete.
4.
Install U38 (Loc. 01) and U54 (Loc. 02) Diagnostic EPROMs
in
the empty sockets
on
the CPU board.
NOTE: When
installing the diagnostic EPROMs, be sure pin 1
is facing the rear
panel.
5.
Turn
on
system power
NOTE:
When the system
is
first turned on, the front panel
LEDs may come on
in
an
unpredictable pattern. They should
all
turn off after about one second.
6.
The red power indicator light'" on the POD should
be
on.
The
front
panel LCD should indicate:
"'If you are testing an RMX the power supply is internal to
the
unit,·
no
power indicator is used.
K250 DIAGNOSTICS (C)
REV.
0
11
JUL
86
The
SELECT
switch LED should be blinking
on
and off.
Kurzweil
250
Service Manual, Chapter 4
4-31
To Next Page
Loading...
