Denon AVR-788 Troubleshooting

ENGLISH

Getting

Troubleshooting

Started

If a problem should arise, first check the following:

Connections

1. Are the connections correct?

2. Is the set being operated as described in the owner’s manual?

3. Are the other components operating properly?

If this unit does not operate properly, check the items listed in the table below. Should the problem persist,

Setup

there may be a malfunction.

In this case, disconnect the power immediately and contact your store of purchase.

Playback

GGeneralH

Symptom

Cause

Countermeasure

Page

Power does not

• Connection of the power cord is

• Check the insertion of the power

Remote

turn on, or turns

faulty.

cord plug.

was turned on.

off directly after it

Control

No sound is

• Connection

with

the

input

• Check the connections.

produced from

devices or connection of the

speakers.

speaker cables is faulty.

Multi

• Device you want to play and set

• Select

appropriate

input

input source do not match.

source.

• Master volume is

turned too

• Adjust the master volume to an

Zone

low.

appropriate level.

Information

• Mute mode is set.

• Cancel the mute mode.

• Headphones are connected.

• Disconnect the headphones.

• No

digital

signals

are

being

• Select an input source for which

input.

the digital input setting has been

made.

Troubleshooting

• The

connectors to

which the

• Set the input mode.

digital inputs are assigned and

the settable input modes do not

match.

Display is off.

• The “Dimmer” setting is set to

• Set

something

other

than

“OFF”.

• The PURE DIRECT mode is set.

• Set a surround mode other than

the PURE DIRECT mode.

“DOLBY DIGITAL”

• DVD player’s digital audio output

• Check

the

DVD player’s

audio

–

indicator does not

setting is not proper.

output setting. For details, read

appear on display.

the

DVD

player’s

operating

instructions.

Symptom		Cause		Countermeasure					Page
Power turns off	• Protection	circuit activated due	• Turn off the power, wait for the						10
suddenly and	to rise of internal temperature.		set to fully cool down, then turn
power indicator			the power back on.
flashes red.			• Place the set in a well-ventilated						10
			place.
	• Core wires of two speakers are		• First unplug		the	power cord,			10
	touching each other or a core		then twist the core wires tightly
	wire is sticking out of the terminal		or terminate the speaker cables,
	and touching the set’s rear panel,		then reconnect.
	activating the protection circuit.
	• Speakers	with an impedance	• Use speakers with the specified						10
	other than specified are being		impedance.
	used.
	• Set is damaged.		• Turn off the power and contact a						–
			DENON service center.
GRemote Control UnitH

Symptom		Cause		Countermeasure					Page
Set does not work	• Batteries are worn.		• Replace with new batteries.						3
properly when	• You are operating outside of the		• Operate within			the	specified		3
remote control	specified range.		range.
unit operated.	• Obstacle between main unit and		• Remove the obstacle.						3
	remote control unit.
	• The batteries are not inserted in		• Insert	the	batteries		in	the	3
	the proper direction, as indicated		proper	direction,		following		the
	by the polarity marks in the		polarity marks in the battery
	battery compartment.		compartment.
	• The set’s remote control sensor		• Move the set to a place in which						3
	is exposed to strong light (direct		the remote control sensor will
	sunlight, inverter type fluorescent		not be exposed to strong light.
	bulb light, etc.).
	• The remote ID of the main unit		• Set Remote ID for the main unit						30
	and remote control unit do not		to “1”.
	match.