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Table C-1 Numeric Codes and Text Messages (continued)
Control panel message Description Recommended action
Network Server Mode Active and No
Keyboard Attached
Keyboard failure while Network Server
Mode enabled.
1. Reconnect keyboard with computer
turned off.
2. Check connector for bent or missing
pins.
3. Ensure that none of the keys are
depressed.
4. Replace keyboard.
Parity Check 2 Parity RAM failure. Run Computer Setup and Diagnostic
utilities.
Interpreting POST Diagnostic Front Panel LEDs and
Audible Codes
This section covers the front panel LED codes as well as the audible codes that may occur before or
during POST that do not necessarily have an error code or text message associated with them.
WARNING! When the computer is plugged into an AC power source, voltage is always applied to
the system board. To reduce the risk of personal injury from electrical shock and/or hot surfaces, be
sure to disconnect the power cord from the wall outlet and allow the internal system components to
cool before touching.
NOTE: If you see flashing LEDs on a PS/2 keyboard, look for flashing LEDs on the front panel of
the computer and refer to the following table to determine the front panel LED codes.
Recommended actions in the following table are listed in the order in which they should be
performed.
Not all diagnostic lights and audible codes are available on all models.
Table C-2 Diagnostic Front Panel LEDs and Audible Codes
Activity Beeps Possible Cause Recommended Action
Green Power LED On. None Computer on. None
Green Power LED flashes
every two seconds.
None Computer in Suspend to
RAM mode (some models
only) or normal Suspend
mode.
None required. Press any key or move the
mouse to wake the computer.
152 Appendix C POST Error Messages
- HP Pro 3330/3380 Microtower 1
- HP Pro 3335/3385 Microtower 1
- HP Pro 3340/3348 Microtower 1
- HP Pro 3330 Small Form Factor 1
- About This Book 3
- Table of contents 5
- 1 Product Features 11
- Feature Overview 12
- Microtower Components 13
- Small Form Factor Components 14
- Software 15
- Protecting the Software 16
- Computer Setup—File 19
- Computer Setup—Storage 20
- Computer Setup—Security 22
- Computer Setup—Power 25
- Computer Setup—Advanced 26
- 4 Illustrated parts catalog 28
- Misc Parts 32
- Misc Boards 33
- Computer major components 36
- SATA Hard Drives 43
- SATA Hard Drive Cables 43
- SMART ATA Drives 44
- Hard Drive Capacities 44
- Preparation 45
- Grounding the Work Area 47
- Operating Guidelines 48
- Routine Care 48
- Cleaning the Keyboard 49
- Cleaning the Monitor 49
- Service Considerations 50
- Cables and Connectors 51
- Hard Drives 51
- Lithium Coin Cell Battery 51
- – Microtower (MT) Chassis 52
- Removing Memory Modules 60
- Expansion Cards 63
- Item Description 64
- PCI1 PCI slot 65
- PCI2 PCI slot 65
- Installing Additional Drives 74
- Drives 65 75
- Removing an Optical Drive 77
- Removing a Hard Drive 80
- Drives 71 81
- Drives 73 83
- Power Switch/LED Assembly 89
- System Fan 91
- Fan Sink Assembly 95
- AMD Sempron processor: 97
- System Board 101
- Preparation for Disassembly 104
- Access Panel 105
- Front Bezel 107
- DDR3-SDRAM DIMMs 108
- Populating DIMM Sockets 109
- Removing DIMMs 110
- Expansion Card 113
- Cable Management 117
- Cable Connections 118
- Drive Positions 119
- Removing Drives 120
- Removing the Hard Drive 122
- Drives 113 123
- Drives 115 125
- Power Switch 126
- Front USB Assembly 128
- Description Spare part number 130
- Speaker 666885-001 130
- Fan Assembly 132
- Fan Assembly 123 133
- Fan Sink 134
- Processor 136
- Power Supply 138
- Power Supply 129 139
- A Connector Pin Assignments 144
- Headphone 145
- Line-in Audio 145
- Line-out Audio 145
- 4-Pin Power (for CPU) 145
- DVI Connector 147
- 24-Pin Power 148
- PCI Express 149
- B Power Cord Set Requirements 151
- Country-Specific Requirements 152
- C POST Error Messages 153
- Audible Codes 162
- Safety and Comfort 166
- Helpful Hints 167
- Solving General Problems 169
- Solving General Problems 161 171
- Solving Power Problems 172
- Solving Diskette Problems 173
- Solving Diskette Problems 165 175
- Solving Hard Drive Problems 176
- Solving Display Problems 181
- Solving Display Problems 173 183
- Solving Audio Problems 185
- Solving Printer Problems 187
- Solving Network Problems 191
- Solving Network Problems 183 193
- Solving Memory Problems 195
- Solving Processor Problems 196
- Solving Software Problems 203
- Contacting Customer Support 204
- Resetting the Password Jumper 206
- F Backup and Recovery 208
- Performing a Recovery 210
- Using F11 211
- G Specifications 213
- SFF Specifications 214
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