JVC TM-H150CG/E - Page 30

1-30 (No.YA068)
BRIGHT Signal
generator
[SIGNAL BLOCK]
S01 : BRIGHT
• Under the condition that LOW LIGHT adjustment has
been correctly finished.
(1) Input the gray scale signal.
(2) Select the SIGNAL BLOCK with [CHROMA /
PHASE] button (< SIG >) from < BLOCK SELECT >
screen.
(3) Select < S01 >(BRIGHT).
(4) Adjust the < S01 > to where the 0% black part
component faintly brightens.
(5) Check the BRIGHT adjustment by alternately turning
the screen display in WHITE BALANCE BLOCK <
CUTOFF > mode.
(6) Check the LOW LIGHT adjustment has been
finished correctly before performing HIGH LIGHT
adjustment.
CONTRAST Signal
generator
Oscilloscope
TP-47G
TP-E
[CRT SOCKET
PWB]
[SIGNAL BLOCK]
S02 : CONTRAST
(1) Input the full color bar signal (75% white)
(2) Connect the oscilloscope to TP-47G and TP-E.
(3) Select the SIGNAL BLOCK with [CHROMA /
PHASE] button (< SIG >) from < BLOCK SELECT >
screen.
(4) Select the < S02 >(CONTRAST).
(5) Adjust the < S02 > to become the voltage different
between 75% white and 0% black to 34V±2V as
shown in figure.
Item
Measuring
instrument
Test points Adjustment part Description
75%
WHITE
W Y Cy G
Mg R B BL
V
75-BL=34V 2V
_J
'
±
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