JVC TK-C675BE, Service Manual

Page: 22 / 66

Item Mode Adjustment procedure
Measuring
instrument &
Input signals
No.
Measuring point ( )
Adjustment parts ( )
Adjustment level ( )
1) Attach the infinity adjustment lens with gray
scale chart to the lens.
2) Set lens iris so that the white level of the gray
scale chart at VIDEO output is 0.714Vp-p[100
IRE] (U Ver.) or 0.7Vp-p (E Ver.).
3) Adjust the two data alternately so that the
dot of the VIDEO output appears in the center
of the vectorscope.
4) Attach the filter (80C) to the lens.
5) Set lens iris so that the white level of the gray
scale chart at VIDEO output is 0.714Vp-p[100
IRE] (U Ver.) or 0.7Vp-p (E Ver.).
6) Adjust the two data alternately so that the
dot of the VIDEO output appears in the center
of the vectorscope.
7) Attach the filters (80C + 80C) to the lens.
8) Set lens iris so that the white level of the gray
scale chart at VIDEO output is 0.714Vp-p[100
IRE] (U Ver.) or 0.7Vp-p (E Ver.).
9) Adjust the two data alternately so that the
dot of the VIDEO output appears in the center
of the vectorscope.
20 Manual
WHT. BAL
adjustment • Gray scale chart
(just scan)
• Oscilloscope
(H-rate)
• Vectorscope
• Filter(80C)
• Filter(80C+80C)
W.BAL is set
automatically
to
“MANUAL”. VIDEO output
LENS IRIS
<U Ver.>
0.714Vp-p[100 IRE]
<E Ver.>
0.7Vp-p
VIDEO output
DAh (MWB R gain)
DBh (MWB B gain)
VIDEO output
LENS IRIS
<U Ver.>
0.714Vp-p[100 IRE]
<E Ver.>
0.7Vp-p
VIDEO output
DCh (C8 MWB R gain)
DDh (C8 MWB B gain)
VIDEO output
LENS IRIS
<U Ver.>
0.714Vp-p[100 IRE]
<E Ver.>
0.7Vp-p
VIDEO output
DEh(C16 MWB R gain)
DFh(C16 MWB B gain)
2-13
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