Harman Kardon TU 970II/230 Service Manual
harman/kardon
TU 970II/230 Service Manual
Page 1 of 21
harman/kardon Service Manual
TU 970II/230
FM/AM/DAB Tuner
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
Technical Specifications
harman/kardon
TU 970II/230 Service Manual
Page 2 of 21
FM Section
Frequency Range 87.50 MHz to 108.00 MHz (50 kHz steps)
Signal-to-Noise Ratio 65 dB (Mono) 60 dB (Stereo)
Presets 30
Section
AM
Frequency Rang 522 kHz to 1620 kHz (9 kHz steps)
Signal-to-Noise Ratio 35 dB
Presets 30
DAB Section
RF Section Band 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
Display 2 line by 16 character DOT Matrix
Presets 99
Audio Output Stereo, 2.5V P-P
48 kHz sample rate 16 bit sample resolution
Optical S/PDIF IEC60958 Compliant
48 kHz sample rate 24 bit sample resolution
General
Power Requirement 230-240 V AC, 50 Hz
Power Consumption 12 W
3 W (standby)
Dimension (Max)
Width 442 mm
Height 63 mm
Depth 299 mm
Weight 3.4 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
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 pressed Unit is plugged into a live outlet.
No sound is heard Tune 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.
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 Manual
Tune 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.
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.
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.)
A
turn the unit off (to Standby).
next to the switch will turn blue
Numeric Keys: These buttons serve as a
Clear Button: Press this button to clear
Info/RDS Button: Pressing this button will
Auto Tune Button: In DAB mode, press
Scroll Buttons: Press L to tune lower
K to tune higher
6
TUNED
. Press again briefly to tune to
9
on
Function/FM Mode Selector: In DAB
STEREO
MONO
Band Selector: Press this button to change
Select: In FM or AM mode, press this
Memory Button: Press this button to open
Standby/Power Off: Press this button to
EXPLODED VIEW (TU 970II)
harman/kardon
TU 970II/230 Service Manual
Page 7 of 21
S2
35
34
33
S5
S6
32
X5
S7
X4
S4
X5
23
25
24
26
S2
X3
S6
12
16
S1
X4
21
S1
X6
X4
20
S3
X4
27
28
17
S1
X5
4
13
22
S1
X2
5
14
19
18
9
6
7
10
8
3
11
S8
S2
X4
2
1
15
CTS3+8JFC
X2
S8
S7
S6
S5
S4
S3
S2
S1
NO.
CHD1A023
CTB3+8JFC
CTB3+6JFZ
CTB3+10GFZ
CTW3+8J
CTB3+6J
CTB3+10G
PARTS NO.
29
30
31
X4
S3
X4
SCREW
SCREW, TRANS
SCREW
SCREW
SCREW
SCREW
SCREW
SCREW
DESCRIPTION
Q'TY
1
132
4
4
1
1
1
1
1
2
1
3
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
35
X4
Q'TY
CJA2B043ZA
KHR1A028
34
CKF1A275Z
33
31
KHG1A050
30
CKL1A186H43
29
CUA1A240
28
27
CNVMB114MA18L
26
COP11666B
25
24
CMH1A226
23
CKC1B151S46
22
CMD1A501
21
20
HFL16T202DA1E
19
18
17
16
KBT1A920MBC22
15 KNOB, SELECT
KBT1A919MBC22
14
13 KBT1A918MBC22
CGL1A227
12
11
CGW1A374RDH43
10
CMZ1A095
9
CMZ1A093 FILTER, FIP 1
8
KGR1A328MBC22
4
7
KGR1A327MBC22
4
6
KGR1A326MBC22
9
5
1
KGB1A111X
5
4
KGR1A325MBC22
3
CGU1A324Z
8
2
CGL1A229
6
1
KGX1A344MBC22
17
NO.
PARTS NO.
POWER CORD
BUSHING, AC CORD 1
PANEL, REAR 1
PCB(TRANS)
CUSHION, FOOT
FOOT
CHASSIS, BOTTOM
PCB(JACK)
TUNER MODULE
PCB(MAIN)
DAB MODULEHNVFS2020VENICE
SUPPORT, PCB
CABINET, TOP
BRACKET, FIP
PCB(MICOM)
FIP MODULE
PCB(ROTARY)
PCB(FRONT)
PCB(FRONT)
PCB(LED)
KNOB, MEMORY
KNOB, POWER
INDICATOR, POWER
PANEL, FRONT
SHEET, ROTARY
ORNAMENT, BAR(D)
ORNAMENT, BAR(C)
ORNAMENT, BAR(B)
BADGE
ORNAMENT, BAR(A)
WINDOW, FIP
INDICATOR, ROTARY
CAP, ROTARY
DESCRIPTION
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