1983 Philips 26CS3890/05R Teletext & Printer
Television With Printer
This TV is a fairly rare beast these days, released in 1983, only released in 26″ format badged as Philips (26CS3890/05R) or PYE (3908). The sported a K35 chassis with teletext, printer and infrared remote control.
The dot-matrix printer produces a black & white copy of the information presented on screen at the press of a button. Microprocessor controlled tuning system, direct channel selection, 50-pre-selections, built in stereo decoder, Teletext decoder, Teletext page number memory for regular used pages and ‘Beambooster’ feature tor increased picture definition.
Other Features:-
- Direct connection to Hi-Fi amplifier or headphones for variable level audio output
- Euroconnector (SCART) for improved picture and sound from VCR and Video Disc
- Print control via TV or remote
- easy replacement of paper roll
- 5watt (RMS) sound output
How the printer works
The Teletext printer is connected and integrated into the television receiver for printing a hard copy of the picture, that is, the combination of numbers, letters or other symbols, which are displayed on the screen of the television receiver. It should be appreciated, however, that a printer cannot operate at the speed at which the luminance signal is supplied to the television receiver. Since the picture displayed on the screen of the television receiver is a still picture, that is, it remains on the screen long enough for the viewer to read the information, the luminance signal is sampled with a suitable sampling frequency to enable the printer to follow the luminance signal as the corresponding numbers, letters or other symbols are being displayed on the screen of the television receiver to print the sampled output thereby produce the desired hard copy.
The teletext acquisition and decoding is frequently provided as a separate custom designed group of integrated circuit which communicates with the microcontroller. Inputs to the microcontroller are frequently from a remote control device via an infra-red communications link. Thus, typically, the user will use the remote control unit to select the particular programme source which he or she desires to watch. This may be for example a number of broadcast television channels or a choice of channels provided by a cable television network, a satellite receiver or from an external source such as a video cassette recorder or a video disc player. The remote control unit is also used to select a particular teletext page for display and in some instances may be used for additional functions which are specific to a particular television set, which may be the printing of a teletext page.
K35 Chassis
The chassis used is the PHILIPS with a mains isolation transformer, as it is supplied with SCART and DIN video/audio connection sockets. The chassis is very complicated with an additional audio board together with all the remote control and teletext facilities, which dramatically increases the component count. This model was only available in 26-inch screen size and sports a PHILIPS 30AX Crt. The 30AX system, which Philips introduced in 1979, was an important landmark in the development of colour picture systems, the colour tube of the PHILIPS 30AX system displays a noticeably sharper picture over the entire screen surface. This will be particularly noticeable when data transmissions such as Viewdata and Teletext are displayed. This has been achieved by a reduction in the size of the beam spot by about 30%
Does it Work?
The short answer is yes! The set appears to have had very little usage, the cabinet condition is immaculate. The chassis is equally clean, and the CRT appears to also be low usage. The remote was missing, but I did have one in stock that will work it, subsequently I have since acquired and much better condition one (last photo) Once checks were made this was confirmed by the resultant picture.
