Acer Aspire 7100 System Service Manual page 80

Error Symptoms
CD/DVD-ROM drive cannot load
or eject when the system is
turned on and its eject button is
pressed and held.
CD/DVD-ROM drive does not
read and there are no messages
are displayed.
CD/DVD-ROM drive can play
audio CD but no sound output.
Real-Time Clock
Real-time clock is inaccurate.
Audio
Audio software program invokes
but no sound comes from
speakers.
Modem
Modem ring cannot wake up
system from suspend mode.
Data/fax modem software
program invokes but cannot
receive/send data/fax
74
Action/FRU
Disconnect all cables from CD/DVD-ROM drive
except power cable, then press eject button to try
to unload the disk.
CD/DVD-ROM drive power.
CD/DVD-ROM drive
CD may have dirt or foreign material on it. Check
with a known good disc.
Ensure the CD/DVD-ROM driver is installed
properly.
CD/DVD-ROM drive.
Ensure the headphone jack of the CD/DVD-ROM
has an output.
Turn up the sound volume.
Speaker power/connection/cable.
CD/DVD-ROM drive.
Ensure the information in the Date and Time of
BIOS Setup is set correctly.
RTC battery.
System board
Speaker power/connection/cable.
Ensure the Modem Ring Indicator in BIOS
Setup or Power Management is set to Enabled.
If PCI modem card is used, reinsert the modem
card to PCI slot firmly or replace modem card.
If ISA modem card is used, ensure the modem
ring-in cable from the modem card to system
board is connected properly.
In Win 98, ensure the telephone application is
configured correctly for your modem and set to
receive messages and/or fax.
Ensure the modem card is installed properly.
Troubleshooting