Common malfunction of the camera Panasonic AG-DP800
Luggage pretty reliable, at approximately 70% sluchaevotkazov associated with the following defects:1. Image from the camera nalozhenynaklonnye band
(Only on the image skamernoy head, with the inclusion of non-ferrous
polosdefekt not observed). Initially, as pravilodefekt manifested only
during neskolkihdesyatkov seconds after the camera, the camera
priprogreve bands become wider, bent me, then the band disappeared. With
vremenemdefekt appears during all boleedlitelnogo time and may become
The reason is the failure of one capacitor izelektroliticheskih
C8, C9, C5, C6, C2, C3,
C7, C20, C4, C17, C1, C95
signal processor RGB, removed skamernoy head. This fee is set
nadplatami channel recorder and audio / kontrolleromi connected with
them soldered to the motherboard razemami.Dlya access to the board to
loosen the 5vintov securing the frame with the cards, discard the frame
napetlyah. Capacitors are located on the board in dvaryada in the order
in which they are listed here, all - 33mkF 6B. "Minus"
vyvodykondensatorov connected to GND. Dlyakondensatorov of this type is
very characteristic etaneispravnost: while the condenser is cold, there
is great resistance between terminal iobkladkoy, by heating the
condenser it nachinaetrabotat normal. To check which izkondensatorov out
of order, it is possible to vremyaproyavleniya defect or control
urovenpulsatsy on the "plus" vyvodeostsillografom or connect
parallelnoispravny capacitor, in the latter case nadouchest that is the
refusal of two kondensatorovodnovremenno. On faulty
kondensatorenablyudayutsya ripple amplitude value of 50-200mV with a
period of about 7 ms. At nekotorykondensatorah have ripple with
chastotoykadrov that is not a sign ihneispravnosti.2. The image has a bright vyrazhennyyzeleny shade.
Particularly noticeable in temnyhstsenah.
reason is the refusal электролитическогоконденсатора C40 - 33mkF 6B on
the board protsessorasignalov RGB, filmed with a camera head (see
above). At the same time be adversely affected nizkihchastot / DC
tsvetoraznostnyhsignalov. In case of suspicion, to verify objectively
without disassembling the camera to see if this defect in your camera,
3. Black and white output kameryMONITOR OUT.
- Insert the camera's color bars.
- Connect the oscilloscope to any composite output camera.
- On the black strip should not be a drain color subcarrier (see section A in Figure 1).
The reason is the bad paykaodnogo of the conclusions of the crystal
oscillator X2 - VSX027017.734 MHz on that - the same processor board
signals RGB, filmed with a camera head (see punkt1).4. Bad binding to the black level.
so that the image is darker, chemdolzhno be. The reason is
otkazelektroliticheskogo неполярногоконденсатораконденса C87 - 1mkF
again on plateprotsessora signals RGB, removed from kamernoygolovki (see
punkt1). This capacitor works vsheme bindings black level and through
negoprohodit luminance signal. About prisutstviineispravnosti easiest
way to judge poostsilogramme line, for which:
[ندعوك للتسجيل في المنتدى أو التعريف بنفسك لمعاينة هذه الصورة]
- Insert the camera's color bars.
- Connect the oscilloscope to any camera output (composite or luminance only).
level should correspond to the level backporch clock. In other words, a
and b waveforms should be on the same horizontal line as shown in
Figure 1. (Image A site for this case has nothing to do, it refers to
the defect described in paragraph 2)