upgrading and repairing PCs technicians ... - 400 Bad Request

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Chapter 10—Video and Audio
Table 10.29 Diagnosing Sound Card Problems Continued
Symptom Cause Solution
Mono Sound. Mono plug in stereo jack. Use stereo speaker jack.
Incorrectly wired speakers. Check color coding.
Audio card in left-channel Reload drivers and test stereo
mono fail-safe mode
because of driver problem.
sound.
Speakers with
independent volume
controls might be set
differently.
Adjust volume to match on both.
Low volume. Speakers plugged into Use higher powered speaker jack
headphone jack. if separate jacks are provided.
Mixer settings too low. Boost volume in mixer.
Hardware volume
control (thumbwheel)
on sound card turned
too low.
Adjust volume on card.
Speakers not powered Power speakers, add amplifier, or
or require more power. replace speakers.
Scratchy sound. Audio card picking up
interference from other
cards.
Move away from other cards.
ISA sound card might be Normal problem due to high
dropping signals during CPU utilization of ISA card; use
hard disk access. PCI sound card instead.
Interference from monitor Move speakers farther away. Put
causing interference. subwoofers on the floor to maximize
low-frequency transmission
and to keep their big magnets
away from the monitor.
Poor quality FM-synthesis Change to wavetable sound card;
music from sound card. check wavetable settings.
Computer won’t start Card not seated tightly Remove card, reinsert, and
after card installation. in expansion slot. restart PC.
IOS Error displayed Sound card software Check with sound card vendor
during Windows 95 clashes with Windows for an IOS fix program; might be
startup; system locked Input/Output System supplied on install disk; start
up. (IOS). Windows 9x in Safe mode to
locate and install.
Joystick doesn’t work. Duplicate joystick ports
on sound card and
another card causing
I/O port address conflict.
Disable sound card joystick port.
Computer too fast for Buy high-speed joystick port;
inexpensive joystick disable port on sound card;
port. install replacement joystick port
card.
Slow down computer with deturbo
button or BIOS routine.