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Kurzweil K2000 Service Manual page 58

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SECTION 4
DIAGSO_'.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 beqin the diagnostics, be sure that the owner of
the 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 backinq 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.
11

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