Apple imac 17in 1ghz Servicehandbuch

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iMac (17-inch Flat Panel, 1GHz) Troubleshooting -
 Symptom Charts
Symptom Charts
How to Use the Symptom Charts
The Symptom Charts included in this chapter will help you diagnose specific symptoms related to the 
product. Because cures are listed on the charts in the order of most likely solution, try the cures in the order 
presented. Verify whether or not the product continues to exhibit the symptom. If the symptom persists, try 
the next cure. 
Note:  If you have replaced a module, reinstall the original module before you proceed to the next cure.
Apple Hardware Test
Apple Hardware Test is a diagnostic tool for detecting problems with Apple internal hardware components 
such as logic board, memory, modem, video RAM, and Apple AirPort Card. The test does not check 
externally connected hardware components such as USB or FireWire devices; it also does not check non-
Apple devices such as third-party PCI cards. 
Note:  The most recent Apple Hardware Test software can be downloaded from the CD Images page on 
AppleCare Service Source; go to the Service Source home page and select ‘Disc Images’ from the quick-
click table.
Error Codes
If Apple Hardware Test detects a problem with a computer, it displays an error code, which is defined in the 
product's Error Code List. Consult the list for appropriate repair procedures associated with the code.
All Error Code Lists are included in the Service Diagnostics Matrix, Knowledge Base article 112125. You can 
also access this matrix by clicking the Service Diagnostics rollover link under any of the product areas on the 
Service Source home page.