6
ENGLISH
NOTE
• Protector circuit
This unit is equipped with a high–speed protection circuit. The purpose of this circuit is to protect the
speakers under circumstances such as when the output of the power amplifier is inadvertently short-
circuited and a large current flows, when the temperature surrounding the unit becomes unusually
high, or when the unit is used at high output over a long period which results in an extreme temperature
rise.
When the protection circuit is activated, the speaker output is cut off and the power supply indicator
LED flashes. Should this occur, please follow these steps: be sure to switch off the power of this unit,
check whether there are any faults with the wiring of the speaker cables or input cables, and wait for
the unit to cool down if it is very hot. Improve the ventilation condition around the unit and switch the
power back on.
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 HITACHI 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
Ω
/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.
Front Panel
1.
Power operation switch
2.
Headphones jack (PHONES)
3.
Front SPEAKER A/B buttons
4.
TUNING UP/DOWN buttons
5.
MEMORY button
6.
MODE button
7.
BAND button
8.
PTY button
9.
RT button
10.
RDS button
11.
DOLBY/DTS SURROUND button
12.
DSP SIMULATION button
13.
MULTI STEREO button
14.
6CH external input button (6 CH EXT. IN)
15.
STEREO button
16.
INPUT MODE selector button
17.
Preset memory selector buttons
18.
Remote control sensor (REMOTE SENSOR)
19.
Power indicator (ON/STANDBY)
20.
Display
21.
Master volume indicator (VOLUME LEVEL)
22.
DOLBY digital input indicator
23.
Digital lock indicator (LOCK)
24.
DTS input indicator
25.
Input source selector buttons
26.
TREBLE adjustment control
27.
BASS adjustment control
28.
MASTER VOLUME control
AV SURROUND RECEIVER
HTA-DD3
REMOTE
SENSOR
DOWN
CH
OFF
ON
A
B
UP
GROUP
CD
DVD
TUNER
VCR
TV/DBS
MD/TAPE MON
PHONO
ON/STANDBY
ON / STANDBY
PHONES
SPEAKER
TUNER
UP
DOWN
MEMORY
MODE
DOLBY/DTS
SURROUND
6CH
EXT.IN
MULTI
STEREO
DSP
SIMULATION
STEREO
BASS
TREBLE
MASTER VOLUME
VOLUME LEVEL
+
-
INPUT MODE
BAND
TUNING
SURROUND MODE
+
-
DIGITAL
DTS
LOCK
OFF
17 18 19
20
21
22
23
24
25 26 27
28
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
DOLBY
D I G I TA L
RDS
PTY
RT
Radio
• PART NAMES AND FUNCTIONS
*1_002-006 HTA-DD3E_EN
7/29/02, 3:40 PM
6
