TROUBLESHOOTINGS
GB-27GB-26 Digital Terrestrial Receiver
GB
Power supply
Type : SMPS
Input voltage :
AC 100-240V~, 50/60Hz
Fuse rating : 250V T1.6AH
Demodulator
DEMODULATION : OFDM DEMODULATION (DVB-T)
MODE : 2K/8K
CODE RATE : Viterbi Convolutional
Code Rate - 1/2,2/3,3/4,5/6,7/8
Tuner
Freq. Range : 50~860 MHz
Input signal level : -20 ~ -78 dBm
Channel selection : PLL frequency synthesizer
Input impedance : 75 Ωunbalanced
Connector type : Din type female(RF in/RF out)
Video decoder
System decoding : MPEG 2 ISO/IEC 13818
(Transport Stream)
Profile and level : MPEG 2 MP@ML (4:2:2)
Data rate : 1~ 15 Mb/s
Video formats : 4:3 (normal) & 16:9 (widescreen)
Picture resolution : 720(H) x 576(V) x 50 fields/sec
Audio Decoder
System decoding : MPEG 1 ISO/IEC 11172~3 layer I & II
Audio mode : single channel, dual channel, stereo,
joint stereo
Sampling frequency : 32, 44.1, 48, 96 KHz
NNoottee :The specification of the STB may be changed without notice in advance.
Problem Possible cause Solution of the problem
No display LED on Power cord Power cord plug in correctly
the front panel; not plugged in correctly
No power supply
No pictures on the screen Receiver in Standby mode; Set receiver to “On”;
Scart not connected tightly Check connection and correct;
to video output of television;
incorrect channel or video Check channel and video output and
output selected on television correct (TV instruction manual)
No sound Audio cord connected Check connection and correct;
incorrectly;
Loudness level = 0; Increase loudness on television set;
Muting active Press the MUTE key
Remote Control does not Incorrect operation; Point remote control
operate directly towards the Receiver.
Batteries dead or inserted Replace batteries or insert correctly
incorrectly
Poor picture quality Signal strength too low Check the signal strength in
the “Installation” menu, correct
alignment of your antenna
On-Screen Error Message Antenna cable not connected Check connection and correct;
“Searching for signal” or not tight;
incorrect position of the Check position and correct,
antenna; Check the signal strength in
the “Installation” menu
On-Screen Error Message Receiver not yet set Scanning of in “Installation” menu
“Channel data does not
exist.”
The device, packaging material (e.g. Styrofoam) and the batteries must never be
disposed of with household refuse. Please obtain appropriate information about the
regulations in your community, and dispose of all refuse in accordance with regulations
at the separate locations provided.
In some region, the digital terrestrial signal may be weak.
So you’d better use the antenna in which the booster was built, for watching the
weak signal channels.
You can download and upgrade the system software of the receiver through
a specific channel through a specific channel designated by the broadcaster.
The Distributor will provide you with more information about that.
DISPOSALTECHNICAL SPECIFICATIONS
MF68-00345A(REV1.2)_GB 4/18/05 1:27 PM Page 26