Yamaha A4000 Owner's Manual page 235

2.
Remove the top cover (page 232).
3.
Insert the SIMM module into the slot on the circuit board.
• First identify the sockets you will install the SIMMs into.
• There are four sockets, divided into two banks. The two sockets for bank 1 are labeled z, and the two
sockets for bank 2 are labeled x. Bank 1 must be filled first, and then if necessary you can proceed to fill
bank 2. (The labels z and x are located at the left side of the slot when viewed from the front panel.)
If you are using different SIMM sizes in the two banks, the larger size must be installed into the
Bank 1 sockets to ensure that the A5000/A4000 handles the memory correctly. For example, if
you are adding one pair of 32MB SIMMs and one pair of 8MB SIMMs, you must install the 32MB
SIMMs into Bank 1. If you already have SIMMs installed in Bank 1 and are now adding a larger
pair, you will need to move the original pair into Bank 2 and insert the new pair into Bank 1.
• When inserting SIMMs, always begin with the free socket furthest from the A5000/A4000 front side. (SIMMs
will not fit into the sockets if you reverse this order.)
• Hold the SIMM with its cutout part facing to the left (as viewed from the front panel), and set it into the
socket at an angle as shown in Figure (1). Then push in direction shown in Figure (2) so that it becomes
upright and the hook snaps into place.
(1)
(2)
Installing Optional Equipment
235
Appendix
A5000/A4000 •