Lenovo Aptiva Hardware Maintenance Manual page 84

Error Symptoms
CD/DVD-ROM drive can
play audio CD but no sound
output.
Real-time clock is
inaccurate.
Audio software program
invokes but no sound
comes from speakers.
Data/fax modem software
program invokes but cannot
receive/send data/fax
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.)
50 IBM Desktop System HMM
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
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
1. Speaker power/
connection/cable.
Modem
1. See "Factory-Installed
Modem Card" on page
58.
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.
Action/FRU