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SERVICE MANUAL
T-H300DAB
DAB/AM/FM Stereo Tuner
For U.K.
CONTENTS
1 SPECIFICATIONS 2
2 EXPLODED VIEWS AND PARTS LIST 3
3 PC BOARDS AND PARTS LIST 5
4 INCLUDED ACCESSORIES 7
NOTES
PC boards shown are viewed from parts side.
The parts with no reference number or no parts number in the
exploded views are not supplied.
As regards the resistors and capacitors, refer to the circuit diagrams
contained in this manual.
£ Parts marked with this sign are safety critical components. They
must be replaced with identical components - refer to the appropriate
parts list and ensure exact replacement.
Effective : January, 2004 S-0111A
1 SPECIFICATIONS
FM Tuner About DAB
Tuning range ..........................87.50 108.00 MHz (50 kHz steps) With this unit you can receive and listen to Digital Audio
Signal-to-Noise ratio ................................................65 dB (Mono) Broadcast (DAB) programmes. DAB uses digital, not analogue
60 dB (Stereo) signals, resulting in near CD-quality audio with virtually
interference-free reception. Along with superior quality audio,
AM Tuner DAB can also deliver additional audio channels and text. In the
Tuning range ..................................522 1620 kHz (9 kHz steps) future, computer data and images are also possible.
Signal-to-Noise ratio ............................................................35 dB
Digital radio is broadcast as groups of data called ensembles or
DAB Tuner multiplexes. Each multiplex can contain a number of stations
Tunig range ......................................Band 3, 174 MHz 240 MHz (services) and each station contains a primary service and can
Input ..................................................................50 ohms, nominal contain secondary services as illustrated in the following diagram.
Max signal .................................................................. 3 dBm typ
Sensitivity .................................................................. 96 dBm typ DAB SIGNAL
Adjacent Channel Rejection ............................................35 dB typ
Digital output ............................................24 bit/48 kHz resolution
Audio output ........................................................Stereo, 2.5 Vp-p BBC
National MULTIPLEX
General DAB 1
Power requirements ..............................................230 V AC, 50Hz
Power consumption ....................................9 W (STANDBY: 3 W) BBC Radio 4 PRIMARY
Dimensions (W x H x D) ..................................215 x 85 x 270 mm 1 3+ SERVICES
2
Weight ..................................................................................2.4 kg
Operating temperature ................................................0 °C 50 °C
Parliament SECONDARY
1 2 3 4+ SERVICES
Accessories ..................................................AM loop antenna x 1
FM antenna x 1
DAB antenna x 1
Each multiplex is transmitted in a set frequency range and
RCA pin cable x 1
received by this unit for decoding. You can receive multiplexes
Remote control unit x 1
broadcast in the 174240 MHz frequency band and store the
Batteries (AAA, R03, UM-4) x 2
services in each multiplex for you to access. The number of
multiplexes you receive depend on your location. Channels used
in the UK are in the range 10A to 12D.
· Design and specifications are subject to change without notice.
Multiplexes and stations have labels (names) that are used to
identify them. Instead of needing to know the particular frequency
of your favourite broadcast, you can simply select the station
name. Secondary services and additional data such as text or
multiplex info are also available.
2
2 EXPLODED VIEWS AND PARTS LIST
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u
j
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0 g
f
q t
w
d
t
a
8
6
7
9
4 e
5 s r
1
2
3
3
EXPLODED VIEW LIST
£
£
£
4
3 PC BOARDS AND PARTS LIST
5
TEAC DAB PCB ASSY (GATHER) TEAC DAB PCB ASSY (GATHER)
£
£
£
£
£
£
£
£ £
£
£
£
£
£
£
£
£
£
£
£
6
4 INCLUDED ACCESSORIES
INCLUDED ACCESSORIES
7
BLOCK DIAGRAM T-H300DAB
1 2 3 4 5 6 7 8
A
B
C
D
E
T-H300DAB
DAB/AM/FM Stereo Tuner
1 st Issue; September 2003
WIRING DIAGRAM T-H300DAB
1 2 3 4 5 6 7 8
A
B
C
D
E
T-H300DAB
DAB/AM/FM Stereo Tuner
1 st Issue; September 2003
SCHEMATIC DIAGRAM T-H300DAB
1 2 3 4 5 6 7 8
A
B
C
D
NOTES:
£Parts marked with this sign are safety critical components. They must always be replaced with identical
components-refer to the appropriate parts list and ensure exact replacement.
INSTRUCTIONS FOR SERVICE PERSONNEL
BEFORE RETURNING APPLIANCE TO THE CUSTOMER, MAKE LEAKAGE-
CURRENT OR RESISTANCE MEASUREMENTS TO DETERMINE THAT EXPOSED
PARTS ARE ACCEPTABLY INSULATED FROM THE SUPPLY CIRCUIT.
E
T-H300DAB
DAB/AM/FM Stereo Tuner
1 st Issue; September 2003