S Board Adjustments - Sony Trinitron PVM-5041Q Operating Instructions Manual

PVM-6041QM
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5-3. S BOARD ADJSUTMENTS
-S
BOARD (COMPONENT SIDE)-
r,
T1101
LJ
IC1101
l1103
II
LJ
®®
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SECAM(T1101,L1102,L1103)
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1.
Receive SECAM color-bar.
2. Bell Filter Adjustment (Tl 101)
(]) Connect an oscilloscope to ICt 101 pin-®.
@
RV1101
@
RV1102
CN1101
(2) Adjust Tl I 01 (Bell Filter) so that the chroma waveform becomes
smooth. (Uneven level should be minimum.)
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3. Color Balance Adjustment (Ll 102,Ll 103)
(1) Connect an oscilloscope
to
pin-® (R-Y) of CNl 101 connector.
(2) Adjust LI 102 (R-Y) so that the non-colored ponion level becomes
flat.
R~
(3) Connect an oscilloscope to pin-@ (8- Y) of CNI 101 connector.
(4) Adjust LI 103 (B-Y) so that the non-colored portion level becomes
flat.
(5) When adjusting the color level of the unit to MAX or MIN using
the chroma adjusting knob, check that the white balance of the
colorlesssectiondoesnotchange.
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DEMODl:ILA.TIONLEVELAOJUSTMENT(RV1101,RV1102)
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1. Receive SECAM color-bar.
2. Connect an osci!l~scope to IC124 pin-@ (8-0UT),
3. Adjust S board RVI 101 (SEC-COL) so that waveform peaks
should have the same level (most flat).
(8-0UT)
less than 20mV
p-p
JD
[n]
u
(Adjust so thatthe first and the 4th
peaks should have the same level.)
4. Connect an oscilloscope to JC\24 pin-@ (R-OUT).
5. Adjust S board RVl 102 (SEC-COL (R-Y)) so that the level
difference should be minimum.
(R-OUT)
A
less than 60mV
{Adjust for B"'D. [less than 20mV] Also level difference
between Band C should be less than 60mV.)
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