Dell OptiPlex 390 Mini-Tower - Page 36

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8. Pry the power-switch cable free.

9. Slide the power-switch cable out through the front of the computer.

36

Table of Contents

Notes, Cautions, and Warnings2
- Table of Contents3
1 Working on Your Computer7
- Before Working Inside Your Computer7
- Recommended Tools8
- Turning off Your Computer8
- After Working Inside Your Computer9
2 Cover11
- Removing the Cover11
- Installing the Cover11
3 Front Bezel13
- Removing the Front Bezel13
- Installing the Front Bezel14
4 Expansion Card Tab15
- Removing the Expansion Card15
- Installing the Expansion Card17
5 Optical Drive19
- Removing the Optical Drive19
- Installing the Optical Drive20
6 Hard Drive21
- Removing the Hard Drive21
- Installing the Hard Drive22
7 Memory23
- Removing the Memory23
- Installing the Memory24
8 Chassis Intrusion Switch25
- Removing the Chassis Intrusion Switch25
- Installing the Intrusion Switch26
9 Speaker27
- Removing the Speaker27
- Installing the Speaker28
10 Heat Sink and Processor29
- Removing the Heat Sink and Processor29
- Installing the Heat Sink and Processor31
11 Coin-Cell Battery33
- Removing the Coin-Cell Battery33
- Installing the Coin-Cell Battery34
12 Power Switch Cable35
- Removing the Power-Switch Cable35
- Installing the Power-Switch Cable37
13 Front Thermal Sensor39
- Removing the Front Thermal Sensor39
- Installing the Front Thermal Sensor40
14 System Fan41
- Removing the Chassis Fan41
- Installing the Chassis Fan42
15 Input/Output Panel43
- Removing the Input/Output Panel43
- Installing the Input/Output Panel45
16 Power Supply47
- Removing the Power Supply47
- Installing the Power Supply49
17 System Board51
- Removing the System Board51
- Installing the System Board56
18 System Setup57
- Boot Menu57
- Boot Menu Enhancements57
- Timing Key Sequences58
- Beep Codes and Text Error Messages59
- Navigation59
- System Setup Options59
19 Troubleshooting69
- Diagnostic Leds69
- Beep Codes76
- Error Messages79
20 Specifications83
- Specification83
21 Contacting Dell91

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