Technology of Q 2500 colour TV set

Technology of Q 2500 colour TV set- Copy function for re-recording betweendifferent inputs and outputs (also instandby mode), and during TV programmes.- Internal clock synchronized with Teletext.- EPG function (electronic programmeguide).- Recording timer for video recorder andSAT standby function.- Operation of Loewe video recorders via themenu.- Switch-off automation and timer.- In 81 cm sets a rotary panel is used in orderto compensate for the earth’s magneticfield. This prevents distortion of the pictureno matter where the set is placed.- Personal Control System (PCS): operationtailored to individual customer requirements.The most frequently used functionsmay be assigned to four buttons of the remotecontrol. Additionally, the operatingmanual may be viewed on the screen – OnScreen Display (OSD). This includes helpinstructions on functions currently used, informationon the remote control functionsand an index, which enables immediateimplementation of functions. It is also possibleto set limitations to the scope of operationaccording to customer requirements.The user may, for example, be preventedfrom making changes to particularsettings.- A Dolby Digital Module can be installed inmodel versions H and M.- The EAROM and the DVB software maybe directly written to via an external V 24service interface using a PC and serviceadapter.The following features are completely new:- Depending on version, either two or threeAV sockets.- Depending on version, a Teletext memorywith 3000 pages (with active EPG function2000 pages).- An own radio menu, accessible over the“speaker symbol“ on the remote control.- Improved Digital Movie Mode (DMM). Featurefilms are recognized safely. Therefore,accidental switching to camera mode isprevented. Switching effects do not occuranymore.The following circuit descriptions have beensubdivided according to the individual modules.Deviation from this scheme occurs occasionallyin order to emphasize relations betweencircuits more effectively. All componentpositions in the circuit diagrams are identifiedby four figures. For the signal board the fullyequipped version H is explained. For versionsM and B only the differences are noted.The upgrade kits are explained in a separatecircuit description.- Automatic Gain Control (AGC) for all videosignals shown in the main picture.- The RGB signals are no longer convertedto analogue Y/C signals but are directlydigitised instead.- An Audio-In socket to which, for example,an external digital radio receiver may beconnected.- Some models, e.g. Aconda, may be upgradedDocument Q 2500 6 © Loewe ProCollege