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50 IBM Desktop System HMM
CD/DVD-ROM drive can
play audio CD but no sound
output.
1. Ensure that the
headphone jack of the
CD/DVD-ROM has an
output, then check if the
audio cable from CD/
DVD-ROM drive to
system board CN20 is
connected properly. See
“System Board Jumpers
and Connectors” on page
109.
2. Turn up the sound
volume.
3. Speaker power/
connection/cable.
4. CD/DVD-ROM drive.
Real-Time Clock
Real-time clock is
inaccurate.
1. Ensure that the
information in the Date
and Time of
Configuration/Setup
Utility is set correctly. See
“Date and Time” on page
21.
2. Load default settings.
3. CMOS battery.
4. System board
Audio
Audio software program
invokes but no sound
comes from speakers.
1. Speaker power/
connection/cable.
Modem
Data/fax modem software
program invokes but cannot
receive/send data/fax
1. See “Factory-Installed
Modem Card” on page
58.
Fax modem software
program invokes but has no
sound output. (Data files are
received normally; voice
from modem cannot be
produced, but system sound
feature works normally.)
1. Ensure that the modem
voice-in cable from
modem adapter card to
system board CN21is
connected properly. See
“System Board Jumpers
and Connectors” on page
109.
2. “Factory-Installed Modem
Card” on page 58.
Error Symptoms Action/FRU