Kenwood HM-331 Important Items, Maintenance, Reference, Maintenance of the Set, In regard to contact cleaners, Caution on condensation, Memory backup function

Important Items

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HM-331 (En/T)

Maintenance

Cleaning the head section	Cleaning the heads and peripheral components
	For maintaining the best condition of the deck and for longer service life, always
	keep the heads (recording / playback / erase), capstan and pinch roller clean.
Cotton swab	To clean them, perform the following:
	1.Open the cassette holder.
Capstan	2.Using a cotton swab dipped in alcohol, clean the head (recording / playback /
	erase), capstan and pinch roller carefully.
	Demagnetizing the head
	When the recording / playback head is magnetized, the sound quality will
	deteriorate. In such a case, demagnetize the head using a commercially available
Head	demagnetizer (head eraser).
Pinch roller
Tape guides	There are precisely aligned parts around the heads, including the tape guides.
	Note When cleaning, pay special attention so as not to apply shock to them.

Maintenance of the Set

When the front panel, the case, etc. becomes dirty, wipe with a soft, dry cloth. Do not use thinner, alcohol, etc., as these can cause discoloration.

In regard to contact cleaners

Do not use contact cleaners because it could cause a mal- function. Be specially careful not to use contact cleaners containing oil, for they may deform the plastic component.

Reference

Caution on condensation

Condensation (of dew) may occur inside the unit when there is a great difference in temperature between this unit and the outside.

This unit may not function properly if condensation oc- curs. In this case, leave the unit for a few hours with the power left ON, and restart the operation after the condensation has dried up.

Be specially cautious against condensation in a following circumstance:

When this unit is carried from a place to another across a large difference in temperature, when the humidity in the room where this unit is installed increases, etc.

Note related to transportation and movement

Before transporting or moving this unit, carry out the following operations.1Remove the CD from the unit.2Press the 6 key of the CD.3Wait for some time and verify that the displaybecomes as shown in the figure.

PM MHz BEST HITS O.

C D J N O T D I S C •

4Wait a few seconds and turn the unit OFF.

Memory backup function

Stored contents which are	Clock display
cleared immediately when
power plug is unplugged
from power outlet
Stored contents which are	Amplifier section
cleared in at least a day after	"on/standby" status
power plug is unplugged	(ON or STANDBY)
from power outlet	Last input selection
	Volume control value
	Tone control levels
	AUX input level
	Balance setting
	Tuner section
	Receiving band
	Frequency
	Preset stations
	Auto/mono setting
	Program timer setting
	contents
	Cassette deck unit
	Transport direction
	"tape EQ."
	Reverse mode

WARNING NOTICE:

IN MOST CASES IT IS AN INFRINGEMENT OF COPYRIGHT TO MAKE COPIES OF TAPES OR DISCS WITHOUT THE PERMISSION OF THE COPYRIGHT OWNERS. ANYONE WISHING TO COPY COMMERCIALLY AVAILABLE TAPES OR DISC SHOULD CONTACT THE MECHANICAL COPYRIGHT PROTECTION SOCIETY LIMITED OR THE PERFORMING RIGHTS SOCIETY LIMITED.

section Knowledge