Important Note - Kurzweil K2000 Service Manual

SECTION
4
DIAGSO_4.DOC
12/22/92
4.10 K2000 DIAGNOSTICS VERSION
0.4
(K2000
WITH VERSION
1.0
ENGINE SOFTWARE)
This
document
is
intended only
for qualified Kurzweil service technicians.
It
will explain how to use the K2000's internal diagnostic software, describing
the significance of success or failure of each of the
individual
tests, and
when applicable, the measures required
to correct test failures will be
given.
This document
is for use with K2000 Diagnostic software Version
0.4.
Version
0.4
of the diagnostic software
is included with K2000 Version
1.0 Engine
software. Version 1.2x
of the K2000 Engine software include
Version
1.0 of
the diagnostic software, which differs slightly from
Version
0.4. If the unit
you're working on has Engine software Version 1.2x
,
please refer
to the K2000
Diagnostics document
for
Version
1.0 of the diagnostic software.
4.11
INTRODUCTION
This introduction will explain the general structure of the
diagnostic
software, and the types of tests that can be performed.
4.11.1 Diagnostic Software Structure
When you enter the K2000's diagnostic
mode, you will see
a
menu
of available
tests. At this point you can choose to run the
standard Burn-in
test, or you
can select individual tests to
diagnose specific components.
The Burn-in test
automatically initiates
a
series of tests to check the basic functionality of
the K2000's hardware.
There are three general types of
tests:
memory
RAM, ROM, and I/O
(input/output
)
.
The descriptions of each diagnostic test will identify their
general types
4.12 USING
THE K2000 DIAGNOSTIC SOFTWARE
4.12.1 Entering Diagnostic Mode
IMPORTANT NOTE:
Before you begin the diagnostics, be sure that the owner of
"th®
K2000 has backed up any data stored in RAM, since the diagnostics will
completely clear the unit's
RAM.
Refer
to section
13
of the Musician's Guide
for details on backing up
RAM.
First, remove the battery access panel on the
bottom
of the unit and
disconnect the batteries.
Wait
5
minutes
for the
battery capacitors
to
discharge, then turn the unit over, plug it
in,
and turn
it on. You'll see
a
display presenting three options:
Hard Reset, Cancel,
and Diagnostics.
See
Figure
4.2. Use the Alpha Wheel to select the desired option, highlighting
it in reverse. Then press the ENTER button
to execute your choice.
Selecting DIAGNOSTICS will enter the K2000's diagnostic mode.
Selecting HARD
RESET will reset the K2000
(hard reset) and return
it to Program
mode.
Selecting CANCEL will also execute
a
hard reset and return
to
Program
mode.
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