4. This will expose the main controller board of the printer. The two RAM SIMM slots are to the right of the board. There are three slots in this area of the board, the two slots to the left are the RAM SIMM slots.
At least one of the SIMM slots should have a RAM SIMM
SIMM Slots
5. If replacing existing memory with larger capacity SIMMs, remove the existing SIMM(s) as shown.
Install the new SIMM(s) by positioning the SIMM into the slot at approximately a 45 degree angle with its notched end at the top of the slot. Gently rotate the SIMM to the right until it clicks into place under the metal guide clips.