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LC-R60HDU
(4) Turn on the projector power and make sure that the image on the computer screen shows up on the projector
screen. There is no problem if the image is not clear.
(5) Select RESET in the picture status.
(6) Put out the 100% signal, observe the waveform at TP1448 for green (TP1449 for blue, TP1450 for red), and
adjust the level to 0.7 Vp-p using Adjust (A).
(7) Put out the 0% signal, observe the waveform at TP1808 for green (TP1809 for blue, TP1807 for red), and
make sure the level to 10 Vp-p. If out of spec, select VIDEO2 on the process adjust menu. Select G-BIAS (R-
BIAS, B-BIAS) and try to adjust the level to 10 Vp-p.
2. Adjusting the counter voltage
(1) On the adjustment program, set the signal output to 70-80%. (intermediate tone)
(2) Select GAMMA on the process adjust menu.
(3) Select G3 (Red linear γ).
(4) Select VIDEO2 on the process adjust menu.
(5) Select CB-R (Red counter voltage adjustment).
(6) Turn up and down the value until the horizontal 1/60-second-cycle scroll minimizes its darkness and brightness.
(See the figure below.)
(7) Select GAMMA on the process adjust menu.
(8) Select G2 (Green linear γ).
(9) Select VIDEO2 on the process adjust menu.
(10) Select CB-G (Green counter voltage adjustment).
(11) Like in Step (6), minimize the darkness and brightness
of the scroll.
(12) Select GAMMA on the process adjust menu.
(13) Select G1 (Blue linear γ).
(14) Select VIDEO2 on the process adjust menu.
(15) Select CB-B (Blue counter voltage adjustment).
(16) Like in Step (6), minimize the darkness and brightness
of the scroll.
Click on the bar to change the value one by one.
TP1807
Voltage waveform
TP1808
TP1809
White-to-white voltage
Drag the pointer to adjust the level.
Video signal (Ex. Staircase waveform)
26
Black-to-black voltage:
10 Vp-p
Horizontal scroll
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