Maintenance; Troubleshooting - JVC CA-DXJ21 Instructions Manual

Maintenance

To get the best performance of the System, keep your discs,
tapes and mechanism clean.
Handling discs
• Remove the disc from its case by holding it at the edge
while pressing the center hole lightly.
• Do not touch the shiny surface of the disc, or bend the disc.
• Put the disc back in its case after use to prevent warping.
• Be careful not to scratch the surface of the disc when
placing it back in its case.
• Avoid exposure to direct sunlight, extreme temperatures,
and moisture.
To clean the disc:
Wipe the disc with a soft cloth in a straight line from center
to edge.
Handling cassette tapes
• If the tape is loose in its cassette, take up the slack by
inserting a pencil in one of the reels and rotate it.
– If the tape is loose, it may get stretched, cut, or caught in
the cassette.
• Be careful not to touch the tape surface.
• Avoid the following places to store the tape—in dusty
places, in direct sunlight or heat, in moist areas, on a TV or
speaker, or near a magnet.
To keep the best recording and playback sound quality:
• Use a cotton swab moistened with alcohol to clean the
heads, capstans and pinch rollers.
• Use a head demagnetizer (available at electronics and
audio shops) to demagnetize the heads (when the System is
turned off).
To protect your recording
Cassettes have two small tabs on the back
to protect from unexpected erasure or re-
recording.
To protect your recording, remove these
tabs.
To re-record on a protected tape, cover
the holes with adhesive tape.
Cleaning the System
• Stains should be wiped off with a soft cloth. If the System
is heavily stained, wipe it with a cloth soaked in water-
diluted neutral detergent and wrung well, then wipe clean
with a dry cloth.
• Since the System may deteriorate in quality, become
damaged or get its paint peeled off, be careful about the
following:
– DO NOT wipe it with a hard cloth.
– DO NOT wipe it forcefully.
– DO NOT wipe it with thinner or benzine.
– DO NOT apply any volatile substance such as
insecticides to it.
– DO NOT allow any rubber or plastic to remain in contact
for a long time.

Troubleshooting

If you are having a problem with your System, check this list
for a possible solution before calling for service.
General:
Adjustments or settings are suddenly canceled before
you finish.
] There is a time limit. Repeat procedure again.
Operations are disabled.
] The built-in microprocessor may malfunction due to
external electrical interference. Unplug the AC power
cord and then plug it back in.
Unable to operate the System from the remote control.
] The path between the remote control and the remote
sensor on the System is blocked.
] The batteries are exhausted.
No sound is heard.
] Speaker connections are incorrect or loose.
] Headphones are connected.
No picture appears on the screen.
] The video cord connections are incorrect or loose.
No picture is displayed on the TV screen, the picture is
blurred, or the picture is divided into two parts.
] The System is connected to a TV which does not support
progressive video input.
] Incorrect color system is selected (see page 6).
The left and right edges of the picture are missing on the
screen.
] Select "4:3 LB /4:3 MULTI LB" for "MONITOR
TYPE" (see page 37).
Radio Operations:
Hard to hear broadcasts because of noise.
] Antennas connections are incorrect or loose.
] The AM loop antenna is too close to the System.
] The FM antenna is not properly extended and positioned.
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