TECHNICAL SPECIFICATIONS 2
TROUBLESHOOTING GUIDE 3
FRONT PANEL CONTROLS 4
REAR PANEL CONNECTIONS 5
REMOTE CONTROL FUNCTIONS 6
EXPLODED VIEW AND PARTS 7
Released EU2008 harman/kardon, Inc. Rev 0, 10/2008
250 Crossways Park Dr.
Woodbury, New York, 11797
CONTENTS
ELECTRICAL PARTS LIST 8
SEMICONDUCTOR FUNCTION/PINOUTS 15
PCB DRAWINGS 18
BLOCK DIAGRAM 19
WIRING DIAGRAM 20
SCHEMATIC DIAGRAM 21
Page 2
Technical Specifications
harman/kardon
TU 970II/230 Service Manual
Page 2 of 21
FM Section
Frequency Range87.50 MHz to 108.00 MHz (50 kHz steps)
Signal-to-Noise Ratio65 dB (Mono) 60 dB (Stereo)
Presets30
Section
AM
Frequency Rang522 kHz to 1620 kHz (9 kHz steps)
Signal-to-Noise Ratio35 dB
Presets30
DAB Section
RF SectionBand lll, 174 MHz - 240 MHz
Band L, 1452 MHz - 1492 MHz
Input: 50 Ohm, nominal
Max signal: -3 dBm typ
Sensitivity: -96 dBm typ
Adjacent Channel Rejection: 35dB typ
Display2 line by 16 character DOT Matrix
Presets99
Audio OutputStereo, 2.5V P-P
48 kHz sample rate 16 bit sample resolution
Optical S/PDIFIEC60958 Compliant
48 kHz sample rate 24 bit sample resolution
General
Power Requirement230-240 V AC, 50 Hz
Power Consumption12 W
3 W (standby)
Dimension (Max)
Width442 mm
Height63 mm
Depth299 mm
Weight3.4 kg
Depth measurement includes knobs, buttons and terminal connections. Height measurement includes feet and chassis.
All features and specifications are subject to change without notice.
Harman Kardon and Power for the Digital Revolution are registered trademarks of Harman Kardon, Incorporated
Page 3
Troubleshooting Guide
harman/kardon
TU 970II/230 Service Manual
Page 3 of 21
This unit is designed for trouble-free operation. Most problems users encounter are due to operating errors. If you have a problem, first check this list for a
possible solution. If the problem persists, consult your authorized Harman Kardon Service Center.
If the problem is...Make sure that the...
No lights appear when System Power button is pressedUnit is plugged into a live outlet.
No sound is heardTune to an active station.
Sound distorts, particularly in stereo mode.Use a more directional antenna.
Intermittent or continuous buzzing or hissing.Place the unit farther away from these appliances. Install noise filters on the appliances.
Display says 'No stations Available'Check that antenna is connected.
Display has gone blank or says 'service off air'This may occur if a broadcaster changes the label of a service or removes a label whilst you
Make sure the outlet is active.
Check for correct amplifier settings.
Check the connections and wires.
Ensure that DAB coverage exists in your area.
are listening to it. Try to retune to this station, using the Autotune procedure.
Page 4
1
3
4
5
6
7
8
2
@
9A
Front Panel Controls
harman/kardon
TU 970II/230 Service Manual
Page 4 of 21
Power Indicator
1
System Power Control
2
Band selector
3
Function/FM Mode Selector
Power Indicator: This LED will illuminate in
amber when the unit is in the Standby mode to
signal that the unit is ready to be turned on.
When the unit is in operation, the indicator will
turn blue.
1
System Power Control: Press this button
to turn on the TU 970 II; press it again to turn
the unit off (to Standby). Note that the Power
Indicator
next to the switch will turn blue
when the unit is on.
2
Band Selector: Press this button to change
between the DAB, FM and AM frequency bands.
3
Function/FM Mode Selector: In DAB
mode, pressing this button will activate station
order, preset tune, Dynamic Rate Control or
manual tune features. In FM mode, press this
button to select the stereo or mono mode for
FM tuning. In the stereo mode, the word
STEREO
Display
will be shown in the Information
6
, and stereo reception will be
provided when stations are transmitting stereo
signals. In the mono mode, the left and right
signals from stereo broadcasts will be mixed
together and reproduced through all channels.
Select
MONO
for better reception of weak
signals.
4
Info/RDS Button
5
Auto Tune Button
6
Information Display
7
Dimmer
4
Info/RDS Button: In DAB mode, pressing
this button will change the content of the lower
display line of the Information Display as shown
on page 9, as well as signal error rate and soft-
ware version. In RDS mode, it will change
between the different RDS options.
5
Auto Tune Button: In DAB mode, press this
button to automatically scan all available
stations.
6
Information Display: This dual line display
delivers messages and status indications to help
you operate the tuner.
7
Dimmer: Press this button to dim the front
panel display.The first press of the button will
dim the displays to one-half normal brightness;
the next press will turn back to normal brightness.The display will return to normal brightness
the next time the unit is turned on.
8
Memory Button: Press this button to open
the memory position that stores a preset
location in the tuner. 99 DAB presets can be
stored, as well as 30 FM and 30 AM presets.
(See page 9 for more information on tuner
presets.)
8
Memory
9
Control Ring
A
Select
B
Remote Control Sensor
9
Control Ring: Turn counterclockwise to
tune lower frequency stations and clockwise to
tune higher frequency stations.When a station
with a strong signal is tuned, the Information
Display
6
will read
TUNED
. Turn again to
tune to the next frequency increment in ManualTune Mode, or automatically to the next
station with a signal strong enough for
acceptable reception in Auto Tune Mode.
The ring also controls the parameters in the
different menus.
A Select: In FM or AM mode, press this
button to select Auto Tune, Manual Tune or
Preset Tune. In DAB mode, press this button to
select the displayed station.
B
Remote Sensor Window:The sensor
behind this window receives infrared signals
from the remote control. Aim the remote at this
area and do not block or cover it unless an
external remote sensor is installed.
Page 5
Rear Panel Connections
7
6
3
5
4
2
1
0
harman/kardon
TU 970II/230 Service Manual
Page 5 of 21
Optical and Coaxial Digital Outputs
FM Antenna
AM Antenna
Analog Audio Outputs
DAB Antenna
Optical and Coaxial Digital Outputs:
Connect one of these jacks to the optical or
coaxial digital input of your pre amplifier or
integrated amplifier, if available.
Note that these digital outputs only contain the
digital signal from the DAB stations. For FM/AM
reception, you will have to connect the analog
outputs at all times.
FM Antenna: Connect an indoor or exter-
nal FM antenna to this terminal.
AM Antenna: Connect the AM loop
antenna supplied with the receiver to these
terminals. If an external AM antenna is used,
make connections to the AM and GND
terminals in accordance with the instructions
supplied with the antenna.
AC Power Cord
Remote Control Output
Remote Control Input
Analog Audio Outputs: Connect these
jacks to the tuner input of your pre amplifier or
integrated amplifier for analog audio playback.
Be certain to observe proper channel
connections using the color-coded cables and
connectors so that red connects right channels
and white connects left channels.
NOTE: Before making any audio connections,
unplug all components of your audio system
from their AC power outlets. To reduce the
possibility of hum or noise in your system, place
all audio interconnection cables away from both
AC power cords and speaker wires.
DAB Antenna: Connect a DAB antenna to
this terminal.
AC Power Cord: Connect this plug to an
AC outlet. If the outlet is controlled by a switch,
make certain that it is in the ON position.
Remote Control Output: Connect this
jack to the infrared (IR) input jack of another
compatible Harman Kardon remote controlled
product to have the built-in Remote Sensor on
the tuner provide IR signals to other compatible
products.
Remote Control Input: Connect the
output of a remote infrared sensor, or the
remote control output of another compatible
Harman Kardon product, to this jack. This will
enable the remote control to operate even when
the front panel Remote Sensor on the tuner is
blocked. This jack may also be used with
compatible IR remote control-based automation
systems.
Page 6
Remote Control Functions
harman/kardon
TU 970II/230 Service Manual
Page 6 of 21
0
1
2
3
4
5
8
0
Standby/Power On
1
Numeric Keys
2
Clear Button
3
Info/RDS Button
4
Auto Tuning Button
5
Scroll Button
6
Function/FM Mode Selector
7
Band Selector
8
Select Button
9
Memory Button
A
Standby/Power Off
A
9
6
7
0
Standby/Power On: Press this button to
turn on the TU 970 II. Note that the Power
Indicator
when the unit is on.
1
ten-button numeric keypad to enter tuner preset
positions or to tune stations directly.
2
presets from your station list.
3
change the content of the lower display line of
the Information Display as well as signal error
rate and software version. (See page 9 for more
info).
4
this button to automatically scan all available
stations.
5
frequency stations and
frequency stations.When a station with a strong
signal is tuned, the Information Display
will read
the next frequency increment in Manual Tune
Mode, or keep pressed for automatic search for
the next station with a signal strong enough for
acceptable reception in Auto Tune Mode.These
buttons also control the parameters in the
different menus, like the Control Ring
the front panel.
6
mode, pressing this button will activate station
order, preset tune, Dynamic Rate Control or
manual tune features. In FM mode, press this
button to select the stereo or mono mode for FM
tuning. In the stereo mode, the word
will be shown in the Information Display6,
and stereo reception will be provided when
stations are transmitting stereo signals. In the
mono mode, the left and right signals from stereo
broadcasts will be mixed together and
reproduced through all channels. Select
for better reception of weak signals.
7
between the DAB, FM and AM frequency bands.
8
button to select Auto Tune, Manual Tune or Preset
Tune.
9
the memory position that stores a preset location
in the tuner. 99 DAB presets can be stored, as
well as 30 FM and 30 AM presets. (See page 9
for more information on tuner presets.)
9N.C-Non connection
10SINOIUART Data input port
11SOTOOUART Data output port
12VDD1IPower supply port(+5V)
13VSS1IGND
14XTOUTO
15XINI
16TESTIBack-up Input
17,18N.C-Non connection
19RESETIReset input port("L")
20N.C-Non connection
21DAB_DINIDAB Data input port
22DAB_DOUTODAB Data output port
23DAB_CLKODAB Clock control port("L")
24FM/AM_MUTEOFM/AM MUTE control port("L")
25PLL_DATAOPLL Data output port
26PLL_CEOPLL Enable control port
27PLL_CLKOPLL Clock control port
28STEREOITuner module stereo control port
29TUNEDITuner module tuned control port
30PLL_DINIPLL Data input port
31RDS_CLKORDS Clock control port
32RDS_DATAIRDS Data input port
33BACK_UPIBACK-UP mode control port("L")
34REMOTE_INIRemote unit data input port
35~38N.C-Non connection
39,40GNDIGND
41SCROLL_UPIScroll up control port
42SCROLL_DNIScroll down control port
43VREFIA/D converter reference voltage
44AVSSI
45GNDI
46KEY3I
47KEY2I
48KEY1IKEY 1 control port
49~51N.C-Non connection
52VSS2IGND
53VDD2IPower supply port(+5V)
54SYSTEM_MUTEOSystem MUTE control port("L")
55STAND_BYOStandby on control port("L")
56FM/AM_ONOFM/AM on control port("L")
57N.C-Non connection
58POWER_ONOUnit turn on control port("L")
59~64N.C-Non connection
65~68OPTIONIGND or OPEN
69~70N.C-Non connection
71OPTIONIGND or OPEN
72~74N.C-Non connection
75OPTIONIGND or OPEN
76~77N.C-Non connection
78RS_PORegister selection port
79WRITEOWrite enable port
80READORead enable port