Acer Power Sc, Service Manual

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72 Chapter 4
CD/DVD-ROM drive can play audio CD but
no sound output. 1. Ensure the headphone jack of the CD/DVD-ROM has an output.
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 the information in the
Date and Time
of BIOS Setup is
set correctly.
2. RTC battery.
3. System board
Audio
Audio software program invokes but no sound
comes from speakers. 1. Speaker power/connection/cable.
Modem
Modem ring cannot wake up system from
suspend mode. 1. Ensure the
Modem Ring Indicator
in BIOS Setup or
Power
Management
is set to
Enabled
.
2. If PCI modem card is used, reinsert the modem card to PCI slot
firmly or replace the modem card.
3. If ISA modem card is used, ensure the modem ring-in cable from
the modem card to system board is connected properly.
4. In Win 98, ensure the telephone application is configured
correctly for your modem and set to receive messages and/or
fax.
Data/fax modem software program invokes
but cannot receive/send data/fax 1. Ensure the modem card is installed properly.
Fax/voice 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 the modem voice-in cable from modem adapter card to
system board
Video and Monitor
Video memory test failed.
Video adapter failed.
1. Remove all non-factory-installed cards.
2. Load default settings (if screen is readable).
3. System board
Display problem:
- Incorrect colors
No high intensity
Missing, broken, or incorrect characters
Blank monitor(dark)
Blank monitor(bright)
Distorted image
Unreadable monitor
Other monitor problems 1. Monitor signal connection/cable.
2. Monitor
3. Video adapter card
4. System board
Display changing colors. 1. Monitor signal connection/cable
2. Monitor
3. System board
Display problem not listed above (including
blank or illegible monitor). 1. “Monitor".
2. Load default settings (if screen is readable).
3. System board
Error Symptom Action/FRU