Compaq Deskpro AP550 - Audio Hardware Conflicts

4-20
Compaq Professional Workstation AP550 Maintenance and Service Guide
Table 4-11
Network Problems
continued
Problem Cause Solution
Network controller stopped
working without apparent cause.
1. The files containing the
network drivers are
corrupted.
2. The cable is not securely
connected.
3. The network controller is
defective.
1. Reinstall the network
drivers, the Compaq Restore
CD, then run Computer
Setup.
2. Be sure the cable is securely
attached to the network
connector and the other end
of the cable is securely
attached to the correct
device.
3. Replace the network
controller or the system
board.
Audio Hardware Conflicts
Hardware conflicts occur when two or more peripheral devices contend for the same signal lines
or channels. Conflicts between the audio interface and another peripheral device may be due to
the settings of the base I/O addresses, interrupts, or DMA channels. The audio interface
typically has the following settings:
■
Base I/O address 220H
■
OPL III I/O address 388-38Bh
■
Interrupt IRQ 5
■
8-bit DMA Channel 1 and Channel 0 or 3
If you are unsure of the settings of the peripheral boards, you can isolate the source of the
problem by temporarily removing all boards and then reinstalling each board, one at a time,
until the board that is causing the conflict is found.