Yamaha PSR-8000 Installing Options

152
Optional SIMM Installation
ZBefore installing the SIMMs be sure to save any impor-
tant data to disk by using the SAVE TO DISK function
described on page 141. Also remove the backup batteries.
Turn the PSR-8000 power OFF and unplug the power
cord from both the AC wall socket and the instrument’s
rear panel. Turn the instrument upside down and rest it on
a blanket or other soft surface.
1
Installing Options
The SIMMs used must meet the following minimum specifi-
cations, but this does not guarantee that they will work
properly with the PSR-8000. Consult with your nearest
Yamaha representative or an authorized distributor listed at
the end of this manual before purchasing SIMMs for the
PSR-8000.
• 16-bit bus compatibility or compliance with JEDEC standards
(SIMMs which are only compatible with 32-bit buses can not be
used)
• 70 nanoseconds or faster access time (note: 60 nanosecond
SIMMs are “faster” than 70 nanosecond SIMMs).
• No more than 18 memory chips on each SIMM module.
• SIMM modules must be no more than 40 mm in height and the
thickness of the SIMM should not exceed 8mm on either side
when measured from the center of the SIMM. See below.
• SIMMs with parity and EDO DRAM modules can also be used.
• Use only 4, 8, or 16 megabyte memory modules in pairs of the
same type and memory capacity from the same manufacturer:
e.g. 4, 8, or 16 megabytes x 2.
• Install SIMM memory at your own risk. Yamaha will not be held
responsible for any damage or injury resulting from improper
installation.
40mm
8mm
8mm