Troubleshooting - Panasonic CQ-R253U Operating Instructions Manual

Troubleshooting

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Cassette Tape
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11 Trouble
Blank tape is inserted in the unit.
No sound.
Insert recorded tape into the unit.
Heads are dirty.
Clean heads. (Ask a service representative for advice.)
Tape sound quality is
poor.
Poor quality tape.
Use better quality tape.
Dolby B NR tape plays with Dolby B NR off.
Set Dolby B NR to ON.
High tones are
improperly emphasized.
Metal type tape plays with normal mode.
Change Normal mode to Metal mode.
Non-Dolby B NR tape plays with Dolby B NR on.
Set Dolby B NR to OFF.
Normal type tape plays with Metal mode.
Reproduction of high
tones is poor. Change Metal mode to Normal mode.
Heads are magnetized.
Demagnetize heads. (Ask a service representative for advice.)
Tape running mechanism is dirty or out of order.
Wow and flutter level is
Clean tape running mechanism, or repair it. (Ask a service
very high.
representative for advice.)
Sound Setting
Trouble
Left and right balance, or front and rear balance is off on one side.
No sound from left,
Adjust balance/fader setting as appropriate.
right, front, or rear
Cables are not correctly connected.
speakers.
Connect the cables correctly.
The right speaker wire is connected to the left speaker and the left speaker
Left and right sounds are
reversed in stereo wire to the right speaker.
Connect the speaker wires to the correct one.
listening.
Remote Control Unit
Trouble
Battery poles (+) (–) are reversed.
Insert the battery correctly.
Wrong battery.
Check the battery.
Buttons are invalid for
operation.
Battery has run down.
Replace the battery.
Remote control is in the wrong direction.
Direct the remote control at sensor (REMOTE) on the panel.
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CQ-R253U
(continued)
Cause/Step
Cause/Step
Cause/Step
Speaker Connections
Caution: Please follow the instructions given below. Failure to do so will cause damage to the unit and speakers.
<Right> • Use ungrounded speaker only.
• The maximum speaker input should be 50 W or more. (If used with the optional
(White)
+ +
power amplifier, the speaker input should be higher than the maximum amplifier
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-
-
(White
output.)
w/black stripe)
• The speaker impedance should be 4 - 8 Ω.
(Gray) • This unit uses the BTCL circuit, so each speaker should be connected separately
+
+
R
- using parallel vinyl insulated cords.
-
(Gray
• The speaker cords and the power amplifier unit should be kept away (about 30 cm
w/black stripe)
apart) from the antenna and antenna extension cord.
<Wrong>
+ +
+
L
L
-
-
-
Chassis
+ +
+
R R
- -
-
Chassis
• Never connect the speaker cord to • Do not use a 3-wire type speaker
the body of the car. system having a common earth
lead.
Fuse
Use fuses of the same specified rating (15 A). Using different substitutes or fuses with higher ratings, or connecting the
unit directly without a fuse, could cause fire or damage to the unit.
If the fuse replacement fails, contact your nearest authorized Panasonic Service Center.
Product Servicing
If the suggestions in the charts do not solve the problem, we recommend that you take it to your nearest authorized
Panasonic Servicenter. The product should be serviced only by a qualified technician.
Maintenance
Your product is designed and manufactured to ensure the minimum of maintenance. Use a soft cloth for routine
exterior cleaning. Never use benzine, thinner, or other solvents.
+ +
+ +
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-
- - -
+
+ +
+
R
-
- - -
• Do not connect more than one
speaker to one set of speaker
leads.
CQ-R253U
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