To
install
Version
3.2
in
units that currently have Version
3.1, no modifications will be
required to the CPU board. Simply
remove the Version
3.1
EPROMs and install Version
3.2~
To install
Version 3.2
in
units with software levels earlier than Version 3.1,
the
CPU board will require modification as mentioned
in
the
description of Version 3.1. The Version
3.2·
EPROMs should be
installed
in
the following locations:
82102001
82102201
82102401
82090701*
U54,
U53
U52
U51
82102101
82102301
82102501
82090801*
*50kHz Sound Modeling EPROM locations
U38
U37
U36
U35
Version 3.2 is required to install
QLS.QLS
contains a p.c.
board, Macintosh disk and cable. The installation of the
QLS
p.C.
board requires removing the parallel port chip
in
location U108
on
the
CPU
board. The QLS p.c. board
is
plugged into the empty socket at
U108 and supported with mounting hardware. It
is
a fairly simple
installation, however, the pins
on
the solder side of the QLS p.c.
board may break off if bent.
Sound
Block
C may
be
installed
on
a Sound Block A board or
the Enhanced Resident
Sound Block. Note: if the unit currently has a
Sound Block A board with Sound Block B installed it
is
not possible
to
add Sound Block
C.
If Sound Block C
is
being installed
on
a Sound
Block A board be sure that there are sockets for the chips. These
sockets are supplied with the kit if ordered properly. Kurzweil does
not recommend that these chips are soldered into the
Sound Block A
board. Therefore, when ordering a
Sound Block
C,
please specify if it
will be installed
in
a Sound Block A board. If Sound Block C
is
being
installed
in
a Enhanced Resident Sound Block, it is only necessary to
plug the chips
in
the sockets specified.
Note:
QLS may not be installed
in
units that do not have
sampling.
Note: When updating units to Version 3.2 without
sampling. be
sure
to
remove the
o~d
Version 2 or 2.2 EPROMs at locations U35 and
U51.
Kurzwell
250
Service Manual, Chapter 2
2 - 9
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