User Guide

iMac (USB 2.0) Troubleshooting - 25
Error Beep(s) Symptom Charts
Error Beep(s)
Computer beeps at startup.
1. RAM expansion DIMMs for the iMac must be DDR 333 PC2700 compliant SDRAM devices. If the user
installs a DIMM that uses EDO or SGRAM devices, the computer will beep several times when the user
attempts to restart the computer.
2. Refer to “Power-On Self Test” mentioned earlier in this chapter.