Service Manuals, User Guides, Schematic Diagrams or docs for : NOKIA TV tx_tz

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tx_tz


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TX          4:3, 100Hz                                                                                                                        TZ made in Turku 2000...
TZ         16:9, 100Hz                                                                                                                        TX made in Turku 2001...
                                                                         Multi Concept 2 chassies
Dated        Chassis                                  Colours                                                           Possible cause of the fault

                                                                                       *

                                                      Picture

                                                                                       *

                                                      Sound

                                                                                       *

                                                    No picture

31.05.01     TZ          Totally dead, no voltages, no light in Leds..                 * Check +5V Stby voltage, if voltage is not ok, disconnect connector XA5 and measure again.
                                                                                       If voltage is now too high, even over 20V, check / change zener DZfc1 and opto ICfc3.
                                                                                       Check also capacitors Cfc3 and Cfc4 (voltage endurance is 10V), if voltage has been too high.
                                                                                       In this case probably also AV-module has been damaged due to too high Stby voltage.
                                                                                       Note! Do not try new AV-module before you have checked +5V Stby voltage, otherwise new
                                                                                       AV-module may get damaged also.

                                                       Other

07.05.01     TZ          Tuning voltage of PiP Tuner varies a little bit               * Check capacitor Cq4 on +30V tuning voltage, it maybe 10uF 16V. Change it to 10uF 63V.
19.11.01     TZ, TX      Switches off at times by itself, e.g. when changing channel   * Make EHTPROT adjustment (code 22) in Service mode




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