Lexicon MC-4, User Manual

Page: 139 / 164

Troubleshooting & Maintenance
MC-4
6-3
electrical circuit as the MC-4.
The MC-4 is powered on, but there is no video.
1. Examine the video cables – particularly the S-video cables – to
ensure a good connection to the associated component.
2. Check the INPUT SETUP menu VIDEO IN (page 3-11) and
COMPONENT IN (page 3-12) parameters to ensure the
appropriate video connector is assigned to the selected input.
RF interference is present in the audio or video.
1. Make sure the MC-4 is not positioned near unshielded TV or
FM antennas, cable TV decoders and other RF-emitting
devices.
2. Replace unshielded cables with shielded cables wherever
possible.
The MC-4 is exhibiting erratic behavior.
1. Set the rear panel power switch to the | (off) position. Wait 10
seconds. Then set the rear panel power switch to the
c c
(on)
position.
2. Document all user-defined settings on the installation
worksheet that begins on page A-14. Then, follow the
instructions on the next page to restore factory-default
settings.
If all else fails . . .
1. Set the rear panel power switch to the | (off) position. Wait 10
seconds. Then set the rear panel power switch to the
c c
(on)
position.
2. Document all user-defined settings on the installation
worksheet that begins on page A-14. Then follow the
instructions on the next page to restore factory-default
settings.
3. Contact an authorized Lexicon dealer.
4. Contact Lexicon customer service at 781-280-0300 or
www.lexicon.com.
Note:
Visit the knowledge base at www.lexicon.com/kbase
for answers to frequently asked questions and
additional troubleshooting information.
ROUTINE MAINTENANCE
The bulleted items below describe routine maintenance that
should be performed on a periodic basis.
• Clean the MC-4 exterior surface with a soft, lint-free cloth. Do
not use alcohol, benzene, acetone-based cleaners or strong
commercial cleaners. Do not use a cloth made with steel wool
or metal polish. If the MC-4 is exposed to a dusty environment,
a low-pressure blower can be used to remove dust from its
exterior surface.
• Replace the remote control batteries as needed. The remote
control requires two AA batteries. When these batteries are low
on power, the remote control enters a low-voltage condition
that prevents it from operating the MC-4. When this occurs,
follow the instructions on page 1-5 to replace the batteries.
Normal operation will resume when new batteries are installed.