Philips PM 5509 Bedienungsanleitung Seite 20

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Procedure:
1. Depress button "checkerboard" and set switch SOUND to position ON.
2. Connect socket RF, via a coaxial cable (without matching transformer) and an isolating capacitor, to the
input of the first [F-stage of the receiver.
If necessary, temporarily unsolder the IF connection of this stage with the channel selector.
3. Tune the PM 5509 to the IF of the receiver, ensuring that the receiver is not overloaded (use control
RF AMPL. of the PM 5509).
. If the receiver does operate properly yet, the defect will be located in the channel selector.
We would like to emphasise that this IF signal of the PM 5509 should not be employed for any purpose
other' than described above.
2.3.1. Pattern survey
A. PATTERN 1 (Fig. 8)
"checkerboard"; consisting of 6x8 squares.
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Check for correct horizontal and vertical synchronisation.
Check for correct position of the picture (deflection yoke)
Check for correct horizontal and vertical amplitude of the deflection (picture height and - width).
Check for correct horizontal and vertical linearity of the deflection.
Check for correct horizontal and vertical centring of the picture.
Check the bandwidth. The vertical black/white transitions should be sharp and not "double"
(rise time and ringing resp.).
Check the step-function response. The vertical transitions should not show any overshoot.
Check for mains-hum interference in the synchronisation of the picture.
Check the sensitivity of the receiver by means of control RF AMPL.
Check the suppression of the sound intercarrier.
No "sound" should appear in the picture when switch SOUND is set to position ON.
Check for correct focusing of the picture.
Check the proper functioning of the sound section of the receiver, e.g. by operating switch SOUND.
B. PATTERN 2 (Fig. 9)
"circle''
1
Check for correct overall picture linearity.
"Circle and crosshatch"'
1.@ Check for correct overall geometry.
By depressing both buttons, circle and crosshatch, it is easier to check the geometry of the picture
(see Fig. 10).
C. PATTERN 3
"Crosshatch"
1.0 Check and if necessary re-adjust the horizontal- and vertical dynamic convergence and corner
convergence. This should be done according to the instructions of the manifacturer of the receiver.
Fig. 12 shows incorrect horizontal dynamic convergence. Fig. 13 shows a picture detail in case of
incorrect dynamic convergence.