Dell OptiPlex 990 Mini-Tower Manuals

Dell OptiPlex 990 Mini-Tower Manuals

Manuals and User Guides for Dell OptiPlex 990 Mini-Tower. We have 1 Dell OptiPlex 990 Mini-Tower manual available for free PDF download: Service Manual

Dell OptiPlex 990 Mini-Tower Service Manual

Dell OptiPlex 990 Mini-Tower Service Manual (97 pages)

Brand: Dell | Category: Desktop | Size: 17.75 MB

Table of Contents

Notes, Cautions, and Warnings

2
- Table of Contents
  3
1 Working on Your Computer

7
2 Cover

11
- Removing the Cover
  11
- Installing the Cover
  12
3 Front Bezel

13
- Removing the Front Bezel
  13
- Installing the Front Bezel
  14
4 Expansion Card Tab

15
- Removing the Expansion Card
  15
- Installing the Expansion Card
  17
5 Optical Drive

19
- Removing the Optical Drive
  19
- Installing the Optical Drive
  20
6 Hard Drive

21
- Removing the Hard Drive
  21
- Installing the Hard Drive
  22
7 Memory

23
- Removing the Memory
  23
- Installing the Memory
  24
8 Chassis Intrusion Switch

25
- Removing the Chassis Intrusion Switch
  25
- Installing the Intrusion Switch
  26
9 Speaker

27
- Removing the Speaker
  27
- Installing the Speaker
  28
10 Heat Sink

29
- Removing the Heat Sink and Processor
  29
- Installing the Heat Sink and Processor
  31
11 Coin-Cell Battery

33
- Removing the Coin-Cell Battery
  33
- Installing the Coin-Cell Battery
  34
12 Power-Switch Cable

35
- Removing the Power-Switch Cable
  35
- Installing the Power-Switch Cable
  36
13 Front Thermal Sensor

39
- Removing the Front Thermal Sensor
  39
- Installing the Front Thermal Sensor
  40
14 Chassis Fan

41
- Removing the System Fan
  41
- Installing the System Fan
  42
15 Input/Output Panel

43
- Removing the Input/Output Panel
  43
- Installing the Input/Output Panel
  44
16 Power Supply

47
- Removing the Power Supply
  47
- Installing the Power Supply
  49
17 System Board

51
- Removing the System Board
  51
- Installing the System Board
  52
18 System Setup

53
- Boot Menu
  53
- Boot Menu Enhancements
  53
- Timing Key Sequences
  54
- Beep Codes and Text Error Messages
  55
- Navigation
  55
- System Setup Options
  55
19 Troubleshooting

67
- Diagnostic Leds
  67
- Beep Codes
  74
- Error Messages
  77
  - Attachment Failed to Respond
    78
  - Bad Command or File Name
    78
  - Controller Has Failed
    78
  - Data Error
    78
  - Decreasing Available Memory
    79
  - Diskette Drive 0 Seek Failure
    79
  - Diskette Read Failure
    79
  - Diskette Subsystem Reset Failed
    79
  - Gate A20 Failure
    79
  - General Failure
    79
  - Keyboard Failure
    80
  - Memory Allocation Error
    81
  - Memory Size in Cmos Invalid
    81
  - Memory Tests Terminated by Keystroke
    82
  - No Boot Device Available
    82
  - No Timer Tick Interrupt
    82
  - Not a Boot Diskette
    82
  - Plug and Play Configuration Error
    82
  - Read Fault
    83
  - Requested Sector Not Found
    83
  - Reset Failed
    83
  - Seek Error
    83
  - Shutdown Failure
    83
  - Timer Chip Counter 2 Failed
    84
  - Unexpected Interrupt in Protected Mode
    84
  - Write Fault
    84
  - Write Fault on Selected Drive
    85
20 Specifications

87
- Technical Specifications
  87
21 Contacting Dell

97

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