ARa / MP968 Upgrades 

The following information describes how to upgrade the Memory, Hard Drive, and Microprocessor.  Note that some upgrades may be beyond the capabilities of some users to perform on their own.  If you do not feel comfortable to technically capable, do not attempt to do upgrades on your own.  You should consult our service department  or another computer professional for assistance.

Disclaimer: We make our best efforts to make this technical information as accurate as possible, however we cannot guarantee that the information will be 100% accurate in all applications.  We cannot be responsible for any damages resulting from the use of this information.  Although upgrading your computer will not void your warranty any damages caused while attempting an upgrade will not be covered by our warranty. If you have any doubts, please contact our service department or another computer professional

Memory
Type 4MB,8MB,16MB 72pin, 5v, non parity, 60ns, Fast Page Mode SODIMM.  
Layout The system has 8MB on board with two sockets located under the keyboard.  To expand the memory, both of these sockets must be filled with identical memory modules.

Configurations


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Left Socket Right Socket Total
0 0 8
4 4 16
8 8 24
16 16 40
Installation Instructions
  1. Turn the computer off and remove all power sources
  2. Look into the gap between the bottom row of keys and the case of the computer.  You should be able to see the black plastic base of the keyboard.  About 3 keys in from each side you will see a notch in the base of the keyboard.
  3. Insert a flat screwdriver into the notch in the base of the keyboard and move the handle away from the screen.  This action will push the keyboard towards the screen and pop it up
  4. Repeat on the opposite side of the keyboard.
  5. Stand the keyboard upright
  6. You will now be able to see the two memory sockets. See diagrams for memory installation and removal.

 

Hard Drive
Type 2.5" x 17mm (max) EIDE

Note that some newer drive models (mostly Toshiba) require the system to have the later core logic and the latest BIOS.  If you use a drive which is not compatible, you will get a "hard disk 1" failure message during boot.  The requirements for these newer drives are the same as the requirements for year 2000 compliance.  Check the Y2K information page, if your computer is Y2K compatible, it will also be compatible to these newer drives.

Location The hard drive is located on the bottom rear of the computer.
Installaton Instructions

 


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  1. Turn the computer off and remove all power sources.
  2. Turn the computer over.  The hard disk is located in the center on the bottom of the computer.  Just in front of the hard disk is a release latch.  Slide and hold the release latch.  Slide the hard drive towards the front of the computer. Lift the drive out of the computer.
  3. The assembly you remove from the computer, is the hard drive in a mounting kit.  To remove the mounting kit, un-snap the plastic plate, remove the 4 screws from the metal case, separate the metal case halves, remove the hard drive from the metal case, and unplug the connector.
  4. Install the new hard drive in the reverse order.  Note that the metal case has tabs that need to interlock between the two case halves.  You must make sure these go together, do not force the metal case.  If the case is bent it becomes many times more difficult to get the cases to properly mate.

Note: The replacement drive must have the same hole spacing as the original drive.  Most newer drives have relocated the mounting holes closer to the corners of the drive.  You cannot use drives with the newer hole spacing, as the screws match to notches in the computer case and help to retain the drive.

 

Microprocessor
Type Intel Pentium P54C 75~120Mhz is supported by all versions.  Pentium 150 is supported on V7 & V8 mainboard.  Pentium 166 is supported on V8 only. See below for mainboard versions. 

MMX CPUs are NOT supported on any version of the system.

Location The microprocessor is located on the under side rear of the computer, under the door with the fan vents.
Installation Instructions
  1. Turn the computer off and remove all power sources
  2. Remove the hard drive (see above)
  3. Remove the screw on the door with the fan vents and remove the door.
  4. Under the door you will see a heatsink/fan assembly.
  5. The heatsink/fan is attached to the chip with double sided tape.  You need to pry the heat/sink loose.  
  6. You will see the Intel Chip. It is in a white socket. You should see the 2 tabs labeled Lock and open on either side of the chip.  
  7. Insert the tip of a flat screwdriver into the hole on the open side and move the handle of the screwdriver towards the chip.  This will move the socket and chip about 1mm.
  8. Remove the chip from the socket
  9. Set the switches to match your new CPU chip.
  10. Insert the new chip, it should just drop into place.   Note the pins are not symetrical, so the chip will only fit in one direction.
  11. Place a flat screwdriver into the lock side of the socket and move the handle toward the chip.
  12. You must be sure the socket moves all the way so that there is no gap on the open side (see diagram).  This often takes a bit more force than most people think they should apply.  If the socket does not lock all the way either the system will not boot or the socket will loosen causing the system not to boot at a later date.
  13. Re-assemble the computer.

 

Switch Settings

 

 

 

 

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There is a switch block located on the corner of the mainboard, next to the CPU socket.

Note the switch settings and possible CPU's vary by mainboard version. Use the following steps to determine your mainboard version.

  1. Access the area under the keyboard (see memory instructions above).

  2. Look for a group of jumpers between the left memory socket and the LCD.

  3. If these jumpers are NOT present, you have a V1~V5 mainboard.  You should use the settings below.

  4. If these jumpers are present, turn the computer upside down with the ports away from you.  With the CPU door removed, look at the mainboard next to the CPU socket.  Look to the right side closest to you for "V8" printed on the mainboard. You may have to look on an angle, as this will be partially obstructed by the case.

  5. If the "V8" mark is present, your version is V8

  6. If the "V8" mark is absent, your version is V7

V1~V5 

75 90 100 120 133
SW1:1 OFF ON ON ON ON
SW1:2 ON ON OFF ON ON
SW1:3 OFF OFF ON ON ON
SW1:4 OFF OFF ON OFF ON

V7

75 90 100 120 133 150
SW1:1 OFF ON ON ON ON ON
SW1:2 ON ON ON ON ON OFF
SW1:3 OFF OFF OFF ON ON ON
SW1:4 OFF OFF ON OFF ON ON

V8

75 90 100 120 133 150 166
SW1:1 OFF ON ON ON ON ON ON
SW1:2 OFF OFF OFF OFF OFF ON ON
SW1:3 OFF OFF OFF ON ON ON ON
SW1:4 OFF OFF ON OFF ON OFF ON