Sharp 4M-IOM Service Manual page 9

ADJUSTMENT PROCEDURES
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Adjusting Conditions
l PAL CHROMA (1 H DELAY) ADJUSTMENT : VR803, L807
and (45) of IC801) with a resistor, one for each, in
between.
. SECAM ADJUSTMENT : BELL FILTER T801
(Continued)
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difference between the green and magenta
levels.
shown at bottom.
Waveform before adjustment
Waveform after adjustment
I. Adjust T801 so that the R and B levels be the
same.
ADJUSTMENT PROCEDURES
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Adjusting Conditions
. SECAM KILLER ADJUSTMENT : L811
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jack.
I. Connect the oscilloscope to TP801 and TP803.
VIDEO OUTPUT ADJUSTMENT : VR802
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(Connect TP805 to GND)
. SUB BRIGHTNESS ADJUSTMENT : VR813
(Connect TP805 to GND)
(Continued )
Adjusting Procedures
maximum.
I. Adjust LB12 (B-Y) and L813 (R-Y) so that the DC
level of R-Y and B-Y signals be -40 mV.
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