Voltage Regulator Module Info
VRM INFORMATION FOR PM7400, PM7900 & PM8800
 
INSTALLATION
Step 1: Remove all 4 red jumpers from the voltage regulator module socket (VRM1) which is located beside the CPU socket.

Step 2: Position the VRM so that the side with the components on it is facing away from the CPU

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socket.

Step 3: Pull/Push away the two white clips located on both sides of the VRM socket such that the PCB (printed circuit board) insertion area of the socket is unobstructed.

Step 4: Gently place the VRM into the VRM socket, making sure that all pins are well matched and covered by the module.

Step 5: Press down on the VRM along the edge facing up until you hear or see the two white clips lock into the VRM's side notches.


SETTING THE VOLTAGE
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 VOLTAGE           JP1A             JP1B             JP1C             JP1D
 --------------------------------------------------------------------------------------------------
      3.5V             SHORT           OPEN           OPEN            OPEN
      2.9V              OPEN           SHORT          OPEN            OPEN
      2.8V              OPEN            OPEN          SHORT           OPEN
      2.7V              OPEN            OPEN           OPEN           SHORT
      2.5V              OPEN            OPEN           OPEN            OPEN
==================================================
 

REMOVAL
Simply press down on the two white clips and the VRM will be lifted out of the socket for easy extraction.  Replace the four red jumpers as illustrated below:

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