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Tandy 1000 RLX (250-1452/53)
Memory
Faxback Doc. # 1323
Refer to Faxback Doc. # 1292 for Main Logic Board Layout.
Memory Expansion Options:
512K ZIP:
√25-1083
is a 512K ZIP Ram kit.
Tandy National Parts.
This product can be obtained from
√
= Discontinued Radio Shack product
┌──────────────────────────────────────────────┐
│
Tandy 1000 RLX (25-1452) - Expand from 512K:
│
├─────────┬────────────────────────────────────┤
│
│
Add to Main Logic Board
│
├─────────┼────────────────────────────────────┤
│
1MB
│
25-1083
│
├─────────┴────────────────────────────────────┤
│
The 1000 RLX/HD came with 1MB of memory and
│
│
cannot be expanded further.
│
└──────────────────────────────────────────────┘
Note: The 1000 RLX/FD (25-1452) System comes with 512 KB of memory. The
RLX/HD (25-1453) comes with 1 MB of memory. The 1000 RLX/FD System lets you
add 512 KB of additional memory. That's 1 MB total memory (640 KB standard
plus 384 KB extended memory.
Before you can add memory to your Tandy 1000 RLX/FD System, you will need
the 512 KB Memory Upgrade kit (25-1083). You can obtain this kit from your
Radio Shack Store. To install the additional chips, be sure to read the
instructions that come with the kit and follow these steps:
CAUTION: Be sure to touch a grounded metal object before handling the memory
chips.
1. Remove one of the memory chips from the special anti-static package.
2. Find the beveled edge on one of the chips.
3. Find the four memory sockets on the system board. These sockets are
labeled U23, U24, U25, and U26. Note the "1" on the end
of each of the system board's memory sockets.
4. Line up the beveled edge of one of the chips with the "1" on the end of
a memory socket.
5. Gently press the memory chip into the socket.
6. Repeat Steps 1-5 to install the remaining three memory chips.
Note: Be careful not to bend the pins of a chip!

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