Contents v
5.2 Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
5.3 System Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
5.4 Tools Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
5.5 Electrostatic Discharge (ESD) Precautions . . . . . . . . . . . . 5-4
6. Power On and Off. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
6.1 Powering Off the System. . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
6.1.1 When the System Is Working Normally. . . . . . . . . . 6-1
6.1.2 When the System Does Not Respond Normally. . . 6-3
6.2 Powering On the System . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
Part 4 –Subassembly Removal and Replacement
7. Internal Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
7.1 Removing the Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
7.2 Attaching the Wrist Strap . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4
7.3 Replacing the Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5
8. Major Subassemblies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
8.1 Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
8.1.1 Removing the Power Supply. . . . . . . . . . . . . . . . . . . 8-2
8.1.2 Replacing the Power Supply . . . . . . . . . . . . . . . . . . . 8-4
8.2 Speaker/LED Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5
8.2.1 Removing the Speaker/LED Assembly . . . . . . . . . . 8-5
8.2.2 Replacing the Speaker/LED Cable . . . . . . . . . . . . . . 8-7
8.3 Internal Speaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-8
8.3.1 Removing the Internal Speaker. . . . . . . . . . . . . . . . . 8-8
8.3.2 Replacing the Internal Speaker . . . . . . . . . . . . . . . . . 8-11
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