HP Armada m300 Specifications Page 47
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Troubleshooting
Table 2-19
Solving USB
Problems
Problem Possible Cause Solution
External device connected to a
USB connector does not work.
The operating system limits
external devices connected by
USB to two tiers which can
include no more than two hubs on
the first tier and no more than one
keyboard and one pointing device
on the first or second tier.
Reduce the number of connected
external USB devices to no more than
two hubs on the first tier, and no more
than one keyboard and one pointing
device on the first or second tier.
External device connected to
USB connector does not work
during startup (before Windows
95 loads).
During startup, only two tiers are
supported by the USB port. These
tiers can include no more than
two hubs on the first tier and no
more than one keyboard and one
pointing device on the first or
second tier.
Use the external device only after
Windows 95 or Windows 98 has
loaded.
Reduce the number of connected
external USB devices to no more than
two hubs on the first tier, and no more
than one keyboard and one pointing
device on the first or second tier.
External devices in lower tiers do
not work.
An unpowered hub is connected
to another unpowered hub.
Use only powered hubs.
Make sure that all unpowered hubs
are immediately preceded by powered
hubs in the USB chain.
- Compaq Armada M300 1
- Series of Personal Computers 1
- DOCUMENTATION SURVEY 2
- MAINTENANCE AND SERVICE GUIDE 3
- CONTENTS 4
- SPECIFICATIONS 6
- USING THIS GUIDE 7
- Serial Number 8
- PRODUCT DESCRIPTION 9
- Table 1-1 10
- Table 1-2 11
- Features 12
- Accessing the Web Agent 13
- Asset Management 13
- Intelligent Manageability 13
- Fault Management 14
- Fault Management Alerts 14
- Security Management 14
- Configuration Management 15
- Managing Power 15
- Accessing Power Management 15
- Power Management Levels 15
- Figure 1-2. Top Components 16
- Table 1-3 17
- Top Components 17
- Table 1-4 18
- Left Side Components 18
- Table 1-5 19
- Right Side Components 19
- Table 1-6 20
- Front Components 20
- Table 1-7 21
- Rear Components 21
- Table 1-8 22
- Bottom Components 22
- 1.3 Design Overview 23
- System Board 23
- ROUBLESHOOTING 24
- 2.1 Preliminary Steps 25
- 2.2 Clearing Passwords 26
- 2.4 POST Error Messages 27
- Table 2-2 28
- Fatal Error Messages 28
- 2.5 Compaq Utilities 29
- Diagnostics for Windows 30
- Using Computer Setup 30
- File Menu 31
- Security Menu 31
- Advanced Menu 32
- Factory Default Settings 33
- Before Replacing Parts 35
- Obtaining Update Information 35
- Table 2-8 36
- Solving Audio Problems 36
- Table 2-9 37
- Table 2-9 38
- Table 2-10 39
- Table 2-11 39
- Table 2-12 40
- Solving Hard Drive 40
- Problems 40
- Table 2-13 41
- Solving Infrared 41
- Table 2-15 43
- Table 2-16 44
- Solving PC Card 44
- Table 2-19 47
- Solving USB 47
- ILLUSTRATED PARTS CATALOG 48
- Table 3-1 50
- Table 3-2 51
- Spare Part Number 136254-001 51
- 3.4 Mass Storage Devices 52
- 3.5 Miscellaneous 53
- REMOVAL AND REPLACEMENT 54
- PRELIMINARIES 54
- Cables and Connectors 55
- Workstation Precautions 57
- Table 4-1 59
- Table 4-2 59
- Static-Shielding Materials 59
- PROCEDURES 60
- Expansion Unit 62
- ➊ (Figure 5-4) 63
- 5.6 Battery Packs 65
- Replacing the Battery Pack 66
- 5.7 Hard Drives 67
- Inserting a Hard Drive 68
- 5.8 PC Cards 69
- Removing a PC Card 70
- Inserting a PC Card 71
- 5.9 Modem or Modem/NIC Card 72
- Remove the card 73
- ➊ (Figure 5-13) 74
- 5.11 Keyboard 75
- ➊ (Figure 5-15) 76
- Remove the keyboard 76
- 5.12 Memory Expansion 77
- ➋ snap into 78
- 5.13 Switch Cover 79
- ➊ (Figure 5-19) 80
- 5.14 Display Assembly 81
- 5.15 Top Cover with TouchPad 82
- ➊ from the system 83
- ➋, and swing the front 83
- 5.16 Voltage Converter Board 84
- 5.17 Modem Connector Board 85
- 5.18 PC Card Assembly 87
- 5.19 System Board 88
- ➊ (Figure 5-28) 89
- ➌, around the USB port ➌, and 89
- 6.2 Display 91
- 6.3 Hard Drive 92
- 6.4 Diskette Drive 93
- 6.5 Li-Ion Battery Pack 93
- 6.6 CD-ROM Drive 94
- 6.7 DVD-ROM Drive 95
- 6.8 System Interrupts 96
- 6.9 System DMA 96
- 6.10 System I/O Addresses 97
- 6.11 System Memory Map 98
- Index I-1 99
- I-2 Index 100
- Index I-3 101
- I-4 Index 102
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