Apple imac 17in 1ghz Servicehandbuch

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iMac (17-inch Flat Panel, 1GHz) Troubleshooting -
Error Beep(s) Symptom Charts
Error Beep(s)
Computer beeps at startup.
RAM expansion DIMMs for the iMac must be PC133 compliant and use 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.
Refer to “Power-On Self Test” mentioned earlier in this chapter.