Compaq Portable 386 Compaq Portable 386 Personal Computer Maintenance and Serv - Page 86
Memory Upgrade Kit
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To replace the memory expansion board, reverse steps 1 through 6. Chapter 8.12 Memory Upgrade Kit Each 1 megabyte memory upgrade kit consists of two 512 Kbyte memory modules, which are surface mounted with four 256K x 4, 80 ns RAM chips and two 256K x 1, 80 ns RAM chips. The memory upgrade kits are used on the system board to expand its base one megabyte of standard RAM to two megabytes. The memory upgrade kits also provide the memory capacity of the 1 to 2 megabyte memory expansion board. To remove a memory module from the system board: 1. Complete the preparation procedure (see Section 8.2). 2. Remove the rear panel (see Section 8.4). 3. Remove the system board cover (see Section 8.6). 4. Locate the memory module that is to be replaced (Figure 8-25).