HP 24SII manual

APPENDIX C

BUFFER EXPANSION/EPROM UPGRADE

C.1 M24SII-M01 BUFFER EXPANSION ZIP MODULE INSTALLATION

Each one megabyte memory expansion upgrade kit provided by BayTech includes two memory expansion chips (DRAM ICs) which come in a zig zag in-line package (ZIP).

You will need the following equipment: 1 x phillips-head screwdriver.

1.IMPORTANT: Remove power from the unit by depressing the power switch on the front of the unit to OFF. Also remove power cord from the AC outlet.

2.Using the phillips-head screwdriver, remove the 4 phillips-head screws holding the top cover of the unit. After screws are removed, lift off cover.

3.With LED side of the unit facing you, look down into the unit and locate the 8 memory expansion module sockets. These zig zag sockets are marked U301, U302,..., to U308 (see Appendix D.4). Note that two or more of these sockets already have memory chips installed.

4.The new memory expansion chips must be installed in the following order: the first megabyte DRAM ICs occupy sockets U301 and U302, the second megabyte DRAM ICs occupy

sockets U303 and U304, the third megabyte DRAM ICs occupy sockets U305 and U306, and the fourth megabyte DRAM ICs ￿￿￿

occupy sockets U307 and U308.WARNING: If you install the DRAM ICs in any order other thandescribed above, the Model 24SII will not recognize the memoryexpansion.