Denon DN-A300M operating instructions Troubleshooting, Symptom Cause Measures

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Troubleshooting

Check the following before assuming there is a problem with the set

1.Are all connections proper ?

2.Is the set being operated as described in the operating instructions ?

3.Are the speakers and input components being operated properly ?

If the set does not seem to be operating properly, check the points listed below. If these points do not apply, the set may be damaged. Turn off the power immediately and contact your store of purchase.

Symptom		Cause	Measures	Page
When the power is turned		• The power supply cord’s plug is not	• Make sure the unit is correctly	5
on, the power	indicator	fully plugged in.	plugged in and switched on at the
does not light	and no		mains socket.
sound is produced.
		• The speaker cables are not fully	• Connect securely.	4, 5
		connected.		2, 6
The power indicator		• The device you want to listen to has	• Insure the correct input is selected.
		not been selected.
lights but no sound is		• The volume control is set to	• Set to an appropriate level.	2, 6
produced.		minimum.		5
		• The input cable is not fully connected.	• Connect securely.
		• The speaker selector button is set to	• Ensure the SPEAKER A or B buttons	2, 6
		“OFF”.	are set to “ON” as appropriate.
Sound is only produced		• The speaker cables are not fully	• Connect securely.	4, 5
		connected.
from the left or right				5
		• The input cable is not fully connected.	• Connect securely.
speaker(s).		• The left/right balance is off.	• Adjust to a proper balance using the	2
			balance control knob.
For stereo sound, the		• The connections of the speakers or	• Check the connections to be sure	4, 5
positions of the		input cables are inverted.	that left is connected to left, right to
instruments are inverted			right.
left/right.
		• The player’s ground wire is not	• Connect securely.	3, 5
Humming sound is heard		connected.
		• The cables are not fully connected to	• Connect securely.	3, 5
in the music when		the PHONO terminals.
playing records.
		• Influence from a TV or VCR near the	• Try changing the positions in which	–
		player.	the devices are installed.
Howling is produced		• The player and speakers are too	• Install the player and speakers as far	–
		close together.	from each other as possible.
along with the music if				–
		• The vibrations from the speakers are	• Use cushions, etc., to absorb the
the volume is too high
		being transmitted to the player	speakers’ vibrations.
when playing records.
		through the floor.
		• The microphone is plugged	• Plug securely.	2, 6
Microphone sound is not		incompletely.	• Set to an approptiate level.	2, 6
		• The mic volume control is set to
produced.
		minimum.
			• Set to "ON".	2, 6
		• The MIC MIX button is set to "OFF".
Clipping is produced		• The MIC AGC button is set to "OFF".	• Set to "ON".	2, 6
when using the
microphone.
When playing a record,		• The needle pressure is not proper.	• Adjust to a proper needle pressure.	–
		• There is dirt on the tip of the needle.	• Check the tip of the needle.	–
the sound is distorted.
		• The cartridge is defective.	• Replace the cartridge.	–
				7

Specifications

Power amplifier section

Rated Output Power:	2-channel driving (CD		SP OUT)
	70 W + 70 W	(8 Ω/ohms, 20 Hz ~ 20 kHz, T.H.D. 0.07%)
	110 W + 110 W	(4 Ω/ohms, DIN, 1 kHz, T.H.D. 0.7%)
High frequency distortion:	0.01% (Rated output: –3 dB), 8 Ω/ohms, 1 kHz
Output terminals:	Speaker A or B:	4 ~ 16 Ω/ohms
	A + B:	8 ~ 16 Ω/ohms

Pre amplifier section

Input Sensitivity/Input Impedance:	PHONO (MM):	2.5 mV/32 kΩ/kohms
	CD, TUNER, DVD/AUX,TAPE-1, TAPE-2: 150 mV/33 kΩ/kohms
	MIC :	0.6 mV/4 kΩ/kohms
RIAA Deviation:	PHONO (MM):	20 Hz ~ 20 kHz ±0.5 dB

Overall performance

SN Ratio (A network):	PHONO (MM):	76 dB
	(With input terminals short-circuited, 5 mV input signal)
	CD, TUNER, DVD/AUX,TAPE-1, TAPE-2:
		105 dB (input terminals short-circuited)
	MIC :	60 dB
Tone control :	BASS:	100 Hz ±8 dB
LOUDNESS:	TREBLE:	10 kHz ±8 dB
	100 Hz +6 dB, 10 kHz +4 dB

General

Power outlets:	1 unswitched and 2 switched outlets, total capacity 120W (1A)
Power Supply:	AC 120 V, 60 Hz
Power Consumption:	3.3 A
Dimensions:	483(W) x 140(H) x 372(D) mm (19"x 5-1/2"x14-21/32")
	(including protruding parts)
Net Mass:	10.3 Kg (22 lbs 11.31 oz)
Operational temperature:	5	to 35	(41	to 95	)
Storage temperature:	-20	to 60	(4	to 140	)

Remote control unit (RC-1101)

Remote control type:	Infrared pulse
Power supply:	R03/AAA Type (2 batteries)
External dimensions:	50 (W) x 200 (H) x 27 (D) mm (2" x 7-55/64" x 1")
Mass:	128 g (Approx. 4.5 oz) (including batteries)

* For improvement purposes, specifications and functions are subject to change without advanced notice.

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