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References, N cassette deck, Table – Sharp CD-MPX850 User Manual

Page 39: Table body, Table row, Symptom, Possible cause, L cannot record, L is the erase-prevention tab removed, L cannot record tracks with proper sound quality

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03/12/17

CD-MPX850 02-42.fm

39

CD-MPX850

References

Cassette deck

Remote control

Tuner

Condensation

Sudden temperature changes, storage or operation in an extremely
humid environment may cause condensation inside the cabinet (CD
pickup, tape heads, etc.) or on the transmitter on the remote control.
Condensation can cause the unit to malfunction. If this happens,
leave the power on with no disc (or cassette) in the unit until normal
playback is possible (about 1 hour). Wipe off any condensation on
the transmitter with a soft cloth before operating the unit.

Symptom

Possible cause

Cannot record.

Is the erase-prevention tab
removed?

Cannot record tracks with
proper sound quality.

Is it a normal tape? (You cannot
record on a metal or CrO tape.)

Cannot erase completely.

Sound skipping.

Is there any slack?

Is the tape stretched?

Cannot hear treble.

Are the capstans, pinch rollers,
or heads dirty?

Sound fluctuation.

Cannot remove the tape.

If a power failure occurs during
playback, the heads remain
engaged with the tape. Do not
open the compartment with great
force.

Symptom

Possible cause

The remote control does
not operate.

Is the AC power cord of the unit
plugged in?

Is the battery polarity correct?

Are the batteries dead?

Is the distance or angle
incorrect?

Does the remote control sensor
receive strong light?

Symptom

Possible cause

The radio makes unusual
noises continuously.

Is the unit placed near the TV or
computer?

Is the FM antenna or AM loop
antenna placed properly? Move
the antenna away from the AC
power cord if it's located nearby.