Apple 12/640PS manual Installing SIMMs, 155

Installing SIMMs

The printer’s circuit board has two SIMM slots, marked BANK C/D (on the left) and BANK A/B (on the right), for installing additional memory. RAM is provided on SIMMs (Single Inline Memory Modules) that you insert into the slots.

Bank C/D

Bank A/B

Depending on the amount of memory you’re installing, you may need to install one or two SIMMs, and perhaps remove a SIMM from a slot in order to insert one that has more memory. For example, when installing 20 MB of RAM, you must remove the 4 MB SIMM from bank A/B and reinstall it in bank C/D.

When removing SIMMs, always begin by removing the SIMM in bank A/B first. Removing a SIMM in the C/D slot first can be difficult because of the proximity of the slots.

When installing SIMMs, always begin by installing the SIMM in bank C/D first. Installing a SIMM in the A/B slot first can make installing a second SIMM in bank C/D difficult because of the proximity of the slots.

Installing Options 155