Harman Kardon TU 970II Service Manual ▷ View online
harman/kardon
Service Manual
TU 970II/230
FM/AM/DAB Tuner
CONTENTS
TECHNICAL SPECIFICATIONS
2
TROUBLESHOOTING GUIDE
3
FRONT
PANEL
CONTROLS
4
REAR PANEL CONNECTIONS
5
REMOTE CONTROL FUNCTIONS
6
EXPLODED VIEW AND PARTS
7
ELECTRICAL PARTS LIST
8
SEMICONDUCTOR FUNCTION/PINOUTS 15
PCB
PCB
DRAWINGS
18
BLOCK
DIAGRAM
19
WIRING DIAGRAM
20
SCHEMATIC DIAGRAM
21
Released
EU2008
harman/kardon,
Inc.
Rev
0,
10/2008
250 Crossways Park Dr.
Woodbury,
New
York,
11797
harman/kardon
TU 970II/230 Service Manual
Page 1 of 21
Technical Specifications
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
AM
Section
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
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
48 kHz sample rate 16 bit sample resolution
Optical S/PDIF
IEC60958 Compliant
48 kHz sample rate 24 bit sample resolution
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
ENGLISH
29168_TU970II_ENG 03/07/06 11:03 Side 13
harman/kardon
TU 970II/230 Service Manual
Page 2 of 21
12 TROUBLESHOOTING GUIDE
Troubleshooting Guide
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.
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.
Make sure the outlet is active.
Make sure the outlet is active.
No sound is heard
Tune to an active station.
Check for correct amplifier settings.
Check the connections and wires.
Check for correct amplifier settings.
Check the connections and wires.
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.
Ensure that DAB coverage exists in your area.
Ensure that DAB coverage exists in your area.
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
are listening to it. Try to retune to this station, using the Autotune procedure.
are listening to it. Try to retune to this station, using the Autotune procedure.
29168_TU970II_ENG 03/07/06 11:03 Side 12
harman/kardon
TU 970II/230 Service Manual
Page 3 of 21
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.
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
to turn on the
TU 970 II
; press it again to turn
the unit off (to Standby). Note that the Power
Indicator
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.
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.
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
FM tuning. In the stereo mode, the word
STEREO
will be shown in the Information
Display
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
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:
In DAB mode, pressing
this button will change the content of the lower
display line of the Information Display
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
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.
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 bright-
ness. The display will return to normal brightness
the next time the unit is turned on.
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 bright-
ness. 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.
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.)
(See page 9 for more information on tuner
presets.)
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
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.
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.
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.
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.
1
3
4
5
6
7
8
2
@
9
A
4 FRONT PANEL CONTROLS
Front Panel Controls
1
2
3
4
5
6
7
8
9
A
B
Power Indicator
System Power Control
Band selector
Function/FM Mode Selector
System Power Control
Band selector
Function/FM Mode Selector
Info/RDS Button
Auto Tune Button
Information Display
Dimmer
Auto Tune Button
Information Display
Dimmer
Memory
Control Ring
Select
Remote Control Sensor
Control Ring
Select
Remote Control Sensor
29168_TU970II_ENG 03/07/06 11:03 Side 4
harman/kardon
TU 970II/230 Service Manual
Page 4 of 21
