Apple IMAC Service Source - Page 152
Diagnostic Test Points
UPC - 067540444435
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Diagnostic Test Points The iMac has four test points and one ground pad on the bottom of the logic board. These test points are accessible under the customer access panel via small cutouts in the plastic shielding (see below). These test points provide an easy troubleshooting tool for common problems. To use each test point, put the positive probe of your voltmeter on the test point, and the negative probe on the ground pad. General Information iMac (USB 2.0) Troubleshooting - 7
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iMac (USB 2.0) Troubleshooting -
7
General Information
Diagnostic Test Points
The iMac has four test points and one ground pad on the bottom of the logic board. These test points are
accessible under the customer access panel via small cutouts in the plastic shielding (see below).
These test points provide an easy troubleshooting tool for common problems. To use each test point, put the
positive probe of your voltmeter on the test point, and the negative probe on the ground pad.