White Balance Alignment; Focus Adjustment - Hitachi CM715ET Service Manual

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E-2. Light output adjust
Select Timing 1, preset BRI. And CONT. to max. position.
Adjust G2 to get G2 = 550V ± 10V
Adjust VR803 to get light output = 0.6FL ~ 0.5FL
Select Timing 2, adjust VR405 to get pattern over scan. (H SIZE 100%)
F. White Balance Adjustment (9300°as major temperature) Low light
adjust
9300°
x = 0.283 ± 10
y = 0.297 ± 10
Y = 0.6 ~ 0.8FL
1. Select Timing 6, adjust BRI. And CONT. to max. disconnect R. G. B. signals, adjust R/B BAIS to 100 scale (OSD
then slowly adjust G BAIS to 100 scale adjust VR803 to get light output = 0.6 ~ 0.8FL for 9300, repeat above
steps for 6500 and 5000 R/B GAIN setting to get raster color temperature within specified, finally, adjust BRI to
get raster = 0.06FL.
2. High light adjust
9300°
x = 0.283 ± 10
y = 0.297 ± 10
-0
Y =
FL
+5
Select Timing 4, measure 2" square, set CONT. to Max, position and SUB-CONT to 127, R/B GAIN to 200, G
GAIN to 200, adjust SUB-CONT to get light output = 50
5000 R/B GAIN setting to get color temperature within specified.
3. Select Timing 3 with full white pattern adjust OSD-ABL (SUB BRIGHTNESS) to get full white light output = 30
±
1 FL.
G. Focus Adjustment
G-1. Adjust brightness, have the brightness of raster be 0.06FL and contraset be 35FL in timming 6.
G-2. Adjust the G4a and G4b of theFBT, have focus be in the best condition on the 1/4 diagonal of
screen in timing 5.
6500°
x = 0.313 ± 10
y = 0.329 ± 10
Y = 0.6 ~ 0.8FL
6500°
x = 0.313 ± 10
y = 0.329 ± 10
-0
Y =
FL
+5
9
5000°
x = 0.324 ± 10
y = 0.342 ± 10
Y = 0.6 ~ 0.8FL
5000°
x = 0.324 ± 10
y = 0.342 ± 10
-0
Y =
FL
+5
-0
FL for 9300, repeat above steps for 6500 and
+5

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