ENGLISH

Protector circuit

This unit is equipped with a high-speed protection circuit. This circuit protects the internal circuitry from damage due to large currents flowing if the speaker jacks are not completely connected or if an output is generated by a short circuit.

In such a case, the protection circuit will operate to cut off the output to the speakers. Should this happen, turn the power off and check the speaker connections. Then turn the power on again. After muting for several seconds, the receiver should be operating normally.

If the protection circuit is activated again even though there are no problems with the wiring or the ventilation around the unit, switch off the power and contact a DENON service center.

Note on speaker impedance

The protector circuit may be activated if the set is played for long periods of time at high volumes when speakers with an impedance lower than the specified impedance (for example speakers with an impedance of lower than 4 /ohms) are connected. If the protector circuit is activated, the speaker output is cut off. Turn off the set’s power, wait for the set to cool down, improve the ventilation around the set, then turn the power back on.

6 PART NAMES AND FUNCTIONS

Front Panel

• For details on the functions of these parts, refer to the pages given in parentheses ( ).

 

!7

 

!6 !5 !4

 

 

!3

 

 

 

 

!2

!1

B PRECISION AUDIO COMPONENT / AM-FM STEREO RECEIVER

DRA-685

 

 

 

 

 

 

 

 

 

 

VOLUME

 

 

 

 

 

 

 

 

 

 

 

 

CD

PHONO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

REMOTE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SENSOR

 

 

 

 

 

 

 

 

 

 

 

 

 

DVD / VDP

TUNER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AUTO

CH

 

 

 

 

 

 

 

 

 

V. AUX

VCR

STANDBY

 

 

 

TONE SP-A

TUNER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TAPE

TUNING

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MONITOR

DOWN

UP

BAND

MODE

MEMORY

SHIFT

1

2

3

4

5

6

7

8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BASS

TREBLE

BALANCE

ON / STANDBY

PHONES

 

SPEAKER

 

 

MULTI SOURCE

 

 

 

 

 

 

 

 

 

 

A

B

 

VIDEO

 

 

TONE

 

 

 

 

 

 

 

 

 

 

SELECT

MODE

SELECT

DEFEAT

 

LOUDNESS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

L

R

q w

e r t y u i o !0

qPower operation switch …………………………………………(17)

wHeadphone jacks (PHONES) ……………………………………(22)

eSPEAKER A/B buttons ……………………………………………(17)

r VIDEO SELECT button …………………………………………(22)

tMULTI SOURCE buttons ……………………………………(19, 20)

yTONE DEFECT button ……………………………………………(18)

uLOUDNESS button ………………………………………………(18)

iBASS adjustment control ………………………………………(18)

o TREBLE adjustment control ……………………………………(18)

!0BALANCE control …………………………………………………(18)

!1VOLUME control …………………………………………………(18)

!2Preset memory selector buttons ………………………………(26)

!3Display

!4Power indicator ……………………………………………………(17)

!5Remote control sensor (REMOTE SENSOR) …………………(12)

!6TUNING buttons ……………………………………………(25, 26)

!7Input source selector buttons …………………………………(18)

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Denon DRA-685 manual Part Names and Functions, Front Panel