JVC TK-C553E, Service Manual

Page: 12 / 58

2-5
Item Mode Adjustment steps
Measuring
instrument &
Input signals
No.
Measuring point (
*
)
Adjustment points (
-
)
Adjustment level (
+
)
(1) Move the ADJUST Menu cursor to “R GAIN”
or “B GAIN”.
(2) Press the “LEFT” or “RIGHT” button to ad-
just the R GAIN or B GAIN so that the carrier
leak is reduced to the minimum.
If a vector scope is used to perform this step,
raise the vector scope gain and adjust it to
bring the noise to the center.
6 White
Balance
Adjustment Oscilloscope
(H-rate 10 : 1) or
W, F, M grayscale
chart (Just Scan)
(1) Move the ADJUST Menu cursor to “BURST”.
(2) Press the “LEFT” or “RIGHT” button to ad-
just it to the specified value.
5 BURST
Adjustment Oscilloscope
(H-rate 10 : 1)
*
VIDEO OUT
75
Ω
resistor
terminated
-
LEFT or RIGHT button
+
286 mVp-p (40 IRE)
<U model>
+
300 mVp-p
<E model>
ADJUST
mode
BURST
ADJUST
mode
R GAIN
B GAIN
*
VIDEO OUT
75
Ω
resistor
terminated
-
LEFT or RIGHT button
+
Minimum carrier leak
< U model > < E model >
+
Noise in the center