Service Manuals, User Guides, Schematic Diagrams or docs for : SELECO TV f19_chassis

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F 19 SERVICE MANUAL
     THIS DOCUMENT IS A PROPERTY
    OF INDUSTRIE FORMENTI ITALIA
    NO AUTHORIZED MODIFICATIONS
            ARE PERMITTED.


                                   CREATED BY E.G.
There are two different types of F19 chassis that are equipped with two
different microcontroller.
These microcontroller are known as ETT having a code SAA5297A and
PAINTER with a code number SAA5553.
From the point of view of the application on the F19 chassis the two type of
microcontroller are substantially having the same performances, the same pin-
out , the same firmware but they are not interchangeable as the power supply
are different.
In case of SAA5297A the power supply is 5 V for the SAA5553 is 3.3 V.




Even if the two devices are non interchangeable the two chassis
can be interchanged as the in/out interface are exactly the same.

As the specifications of the two devices are the same and the first version of
the chassis was equipped with the SAA5297A , in this document             the
characteristics of it are very much detailed meanwhile there is a very short
description (as an addendum at the end) for the SAA5553.
                       F19 CHASSIS DESCRIPTION
Summary

      The F19 is a chassis suitable to drive CRT having both 4 by 3 and 16 to 9 aspect
ratio and dimension from 25" up to 34".
      As we can see from the block diagram the chassis is equipped with the most recent
Integrated Circuit like the one chip TV processor TDA884x that does include all the low
level signal processing including Video, Audio,       synchronisation process, and chroma
decoder . (see more detail at the "TDA884x FAMILY SPECIFICATION" paragraph), and
the Sound Processor TDA9875A that perform all sound function including digital decoding
of NICAM signals. (see more detail at the " TDA9870A & tda9875A MAIN
CHARACTERISTICS" paragraph).
      The above mentioned devices are driven by an Integrated Circuit that does include
the microcontroller function with 64 K ROM and the TELETEXT acquisition and 8 pages
RAM. (SAA5297A)
      In the F19 chassis there are, besides the stereo one, two possible module that are
performing "FEATURES" like          PIP (picture in picture) and / or CTI (colour transients
improvement) and 4 by 3 to 16 by 9 signal processing. One further module is dedicated to
the so called "Zero Power Stand By"
      A 26 Key Remote Control is performing the full control for the end- used but can
also be used in " SERVICE MODE" to control and adjust, without open the back cover of
the TV set all the necessary functions.
      With the 5 "LOCAL KEY BOARD" button all the end user function can also be
performed
      When the TV set is equipped with a PLL tuner the microcontroller recognise it and
the tuning method became a frequency synthesis system if not it work as a voltage tuning
system (provided all necessary components are mounted)
      The TV make use of a multilevel MENU (activated both by the Remote Control and
Local Keyboard) using five selectable languages ( Italian, German, English, France, end
Spanish) with which it is possible to control sequentially all video and sound value, to
adjust several parameter like picture format, sound response, sleep timer etc., and to set
others important parameter like standard, select country for automatic tuning and sort etc.
      Here below a list of the characteristics of the TV se


E.G.Data creazione 31/10/99 15.38              1/7                                 f19intro
          TV SET CHARACTERISTICS (MONO & STEREO )
PICTURE TUBE SIZE :

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