Kurzweil K2000R - Section 2; K2000 R RAM Expansion

SECTION 2
K2RVOLTS.DOC 01/05/93
2.22
K2000R RAM EXPANSION
Sample RAM in the K2000R may be expanded with the installation of SIMMs
(Single In-line Memory Modules) in pairs. SIMMs for the K2000R must be 30
pin, 8 bit, and 120ns or faster, with maximum dimensions not exceeding 3.5"
wide x 1. 75" high x .25" thick. The following memory si zes are supported:
256K x 8
1MB x 8 2MB x 8
4MB x 8 8MB x 8 16MB x 8
2.22.1 Installation of SIMMs
Note: SIMMa are static sensitive devices.
OSE ALL ANTI-STATIC PRECAUTIONS WHEN HANDLING SIMMs!
•
Turn the unit off and remove the AC line cord from the AC power connector.
• Open the unit as described in Section 3 of the Service Manual.
• Locate the SIMM sockets on the Engine board (as per Figure 2.11 below).
There are two banks of SIMM sockets, the two inner sockets are bank A, and
the two outer sockets are bank B. When installing one bank (2 SIMMs),
install the SIMMs in the bank A sockets. When installing two banks (4
SIMMs)
of the different sizes, make sure that the 2 SIMMs in the bank A
sockets are the same size, and the 2 in the bank B sockets are the same
size.
Bank
A
Engine software EPROMs
pin 1
Bank
B
D
D
D
Figure 2.11 - Engine Board Chip Layout
23