Component input and audio circuit alignment
( For authorized personnel only
This section contains a step by step alignment procedure for the Component Input module as
mounted inside the monitor.
It is advisable to perform this procedure in the same order as proposed to get optimum results.
Only the alignment of the video Output Section is necessary in case of a board installation or
replacement.
Test equipment required
White field generator (switchable 10%, 100%).
PAL S-VHS colour bar test signal.
NTSC S-VHS colour bar test signal.
Audio sinewave generator (1 kHz, 1.5 Vpp).
8 ohms (4W) load (resistor or loudspeaker).
Oscilloscope.
Colour Analyzer.
For complete check also an Y/R-Y/B-Y test signal.
ADJUSTMENT PROCEDURE
1
Output Section
To be carried out when the module is installed or replaced !
Connect a 10% White Field video test signal looped-through to the three inputs CHANNEL A, CHAN-
NEL a and CHANNEL C and terminate on the last one (75 ohms switch upwards).
With the monitor switched on, program the OPT input for RGB(S) format. Refer to the Com-
mand Keys section of this manual.
Set the synchronization mode correctly (INT/EXT) by means of the
SYNC
key.
Set the monitor to calibrated position by pressing
CAL .
Install a colour analyser, probe attached to the screen.
Adjust to have 0.7 nit for each colour by means of :
P12 for red,
P13 for green,
P14 for blue.
Apply (or switch over to) a 100% White Field video test signal.
Adjust for 120 nit for each colour by means of :
P10 for red,
P11 for green,
P9 for blue.
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