Dell Latitude C800 User Manual Page 80
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- Table of contents
- BOOKMARKS
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If a system error message
indicates a port problem or if
equipment connected to a
port seems to perform
incorrectly or not at all, the
source of the problem may
be any of the following:
l A faulty connection
between the I/O port
and the device
l Incorrect settings for
system setup options
l Incorrect settings in
the operating
system's configuration
files
l A faulty cable
between the I/O port
and the device
l A faulty device
l Faulty I/O port logic
on the system board
l Conflicting COM port
settings
l Lack of drivers
1. Exit any open application programs, and then turn off the computer and the serial device.
2. Swap the device's cable with a known working cable.
3. Turn on the computer and the serial device.
Is the problem resolved?
Yes. You probably need a new device cable. Call Dell for technical assistance.
No. Go to step 4.
4. Turn off the computer and the serial device and swap the device with a comparable working device.
For example, if your serial mouse has a problem, swap it with a serial mouse you know is working
properly.
5. Turn on the computer and the serial device.
Is the problem resolved?
Yes. Youprobablyneedanewdevice.CallDellfortechnicalassistance.
No. CallDellfortechnicalassistance.
Checking the Serial or Parallel Port on the Computer:
Fill out the Diagnostics Checklist as you perform the following steps:
1. Check the settings for the Serial Port and Parallel Modeoptionsinthesystem setup program.
Are the communication port options set correctly for the devices connected to the computer?
Yes. Go to step 3.
No. Go to step 2.
2. Change the Serial Port and Parallel Mode options to the appropriate settings, and then reboot the system.
Is the problem resolved?
Yes. The problem is resolved.
No. Go to step 3.
3. Check the contents of your initialization and start-up files. (See "Software Solutions.")
Are the port configuration commands correct?
Yes. Go to step 5.
No. Go to step 4.
4. Change the necessary statements in the start-up files.
If the port problem is confined to a particular application program, see the application program's
documentation for specific port configuration requirements.
Is the problem resolved?
Yes. The problem is resolved.
No. Go to step 5.
5. Insert your ResourceCD into the CD drive, reboot the computer, and run the Serial Ports device group and/or
the Parallel Ports device group in the Dell Diagnostics.
The Serial Ports device group and the Parallel Ports device group check the basic functions of the
system board's I/O port logic. Also, if a parallel printer is attached to the parallel port, the Parallel Ports
device group tests the communication link between the system board's I/O port logic and the printer.
Do the tests complete successfully?
Yes. The problem is with the serial device. Run the basic checks for the serial device. If you have
completed the basic checks and the problem persists, call Dell.
- About the AC Adapter 2
- Connecting the AC Adapter 2
- About the Batteries 2
- Checking the Battery Charge 4
- Battery Warnings 5
- Charging the Battery 5
- Detecting Battery Problems 5
- Battery Disposal 6
- Back View 7
- Left Side View 7
- Right Side View 8
- External Monitor 9
- Parallel Devices 9
- Docking Devices 10
- USB Devices 10
- Serial Devices 10
- AC Adapter 10
- Infrared Sensor 11
- Network 11
- TV and Digital Audio 12
- Audio Devices 13
- IEEE 1394 Devices 13
- Overview 14
- International Dialing Codes 14
- Americas Contact Numbers 15
- Europe Contact Numbers 17
- Advanced Testing 24
- Back to Contents Page 35
- Status Lights 36
- Drive access 37
- Caps Lock 37
- Scroll Lock 37
- Technical Assistance 38
- Help Tools 38
- Problems With Your Order 39
- Product Information 39
- Before You Call 40
- Finding Information 41
- Safety and EMC Symbols 41
- Safety Instructions 41
- EMC Instructions 43
- When Using Your Computer 43
- Ergonomic Computing Habits 44
- Conservation Tips 46
- Power Conservation Modes 46
- Power Options Properties 47
- Power Management Properties 48
- Activating Standby Mode 48
- Activating Hibernate Mode 48
- Activating Suspend Mode 49
- ENERGY STAR®Emblem 49
- FCC Notices (U.S. Only) 50
- IC Notice (Canada Only) 52
- CE Notice (European Union) 52
- Battery Disposal 53
- VCCI Notice (Japan Only) 53
- BSMI Notice (Taiwan Only) 56
- CE Mark Notice 57
- About Passwords 63
- Using a Primary Password 63
- Using a Hard Drive Password 63
- Assigning an Asset Tag 64
- The System Setup Screens 67
- Changing the Boot Sequence 68
- Changing Printer Modes 68
- Changing COM Ports 68
- Enabling the IR Sensor 68
- During POST, the 77
- Processor 82
- PC Cards 82
- Connectors 83
- Display 85
- Keyboard 85
- Battery 85
- AC Adapter 86
- Physical 86
- Environmental (Computer) 87
- Touch Pad 87
- Track Stick 88
- Supported CD/DVD Formats 88
- Fixed Optical Drives 88
- Identifying Your Computer 89
- Packing the Computer 89
- Travel Tips 89
- Traveling by Air 90
- Modular Bay 91
- Floppy Drive 93
- CD, CD-RW, or DVD Drive 93
- Keyboard and Keypad Controls 95
- DellAccessDirect™Key 96
- Speaker Controls 96
- Cursor Controls 97
- Latitude 101
- C800 User's Guide 101
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