Handle your compact discs with care. Always hold them by the edges to avoid leaving fingerprints on the shiny surface.
When you have finished playing a compact disc, always put it back
The outer casing
The compact disc player
The cassette players (heads, rollers and drive capstans)
Always unplug the system from the wall outlet:
Before cleaning it
If you are not going to be using it for a long time
Do not fix paper or adhesive tape to the discs and do not write on the label.
Clean them with a 
Store your compact discs in a clean place, out of direct sunlight, where they will not be exposed to high temperatures.
Check that the tape in the cassette is sufficiently taut.
To prevent erasing a cassette that you wish to keep, remove the safety tab on the upper edge of the cassette. To record a cassette,
Rollers (2)
Drive capstans (3)
When you have finished playing a cassette, always put it back in its case.
Store your cassettes in a clean place, out of direct sunlight, where they will not be exposed to high temperatures.
Avoid using 
If you will not be using the remote control for a long time, remove the batteries to prevent corrosion.
Although your system is very 
If the unit emits an unpleasant odour when in use, unplug it from the main supply and contact the 
The model and serial numbers, normally printed on the rear of the system
Your warranty details
A clear description of the problemMM-J4, MMJ4RH/ELS, MMJ4QH/XFO specifications
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