beautypg.com

Troubleshooting – Denon AVR-788 User Manual

Page 68

background image

Get
ting Star

ted

Connections

Set
up

Pla
ybac

k
Remot

e Contr

ol

Multi-Zone

Inf
or

mation

ENGLISH

If a problem should arise, first check the following:
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,
there may be a malfunction.
In this case, disconnect the power immediately and contact your store of purchase.

Symptom

Cause

Countermeasure

Page

Power does not
turn on, or turns
off directly after it
was turned on.

• Connection of the power cord is

faulty.

• Check the insertion of the power

cord plug.

17

No sound is
produced from
speakers.

• Connection with the input

devices or connection of the
speaker cables is faulty.

• Device you want to play and set

input source do not match.

• Master volume is turned too

low.

• Mute mode is set.
• Headphones are connected.
• No digital signals are being

input.

• The connectors to which the

digital inputs are assigned and
the settable input modes do not
match.

• Check the connections.

• Select an appropriate input

source.

• Adjust the master volume to an

appropriate level.

• Cancel the mute mode.
• Disconnect the headphones.
• Select an input source for which

the digital input setting has been
made.

• Set the input mode.

9

41

41

41
41
33

32

Display is off.

• The “Dimmer” setting is set to

“OFF”.

• The PURE DIRECT mode is set.

• Set to something other than

“OFF”.

• Set a surround mode other than

the PURE DIRECT mode.

30

35

“DOLBY DIGITAL”
indicator does not
appear on display.

• DVD player’s digital audio output

setting is not proper.

• Check the DVD player’s audio

output setting. For details, read
the DVD player’s operating
instructions.

Symptom

Cause

Countermeasure

Page

Power turns off
suddenly and
power indicator
flashes red.

• Protection circuit activated due

to rise of internal temperature.

• Core wires of two speakers are

touching each other or a core
wire is sticking out of the terminal
and touching the set’s rear panel,
activating the protection circuit.

• Speakers with an impedance

other than specified are being
used.

• Set is damaged.

• Turn off the power, wait for the

set to fully cool down, then turn
the power back on.

• Place the set in a well-ventilated

place.

• First unplug the power cord,

then twist the core wires tightly
or terminate the speaker cables,
then reconnect.

• Use speakers with the specified

impedance.

• Turn off the power and contact a

DENON service center.

10

10

10

10

G

GeneralH

Symptom

Cause

Countermeasure

Page

Set does not work
properly when
remote control
unit operated.

• Batteries are worn.
• You are operating outside of the

specified range.

• Obstacle between main unit and

remote control unit.

• The batteries are not inserted in

the proper direction, as indicated
by the polarity marks in the
battery compartment.

• The set’s remote control sensor

is exposed to strong light (direct
sunlight, inverter type fluorescent
bulb light, etc.).

• The remote ID of the main unit

and remote control unit do not
match.

• Replace with new batteries.
• Operate within the specified

range.

• Remove the obstacle.

• Insert the batteries in the

proper direction, following the
polarity marks in the battery
compartment.

• Move the set to a place in which

the remote control sensor will
not be exposed to strong light.

• Set Remote ID for the main unit

to “1”.

3
3

3

3

3

30

G

Remote Control UnitH

Troubleshooting

Tr

oubleshooting

1.AVR788E3_ENG_108.indd 68

2007/10/05 16:22:52