4 Alignment and Adjustments
TT17J*
4-7
4-3-2 (d) WHITE BALANCE ADJUSTMENT VERIFICATION
CONDITIONS
Scanning frequency:
68 kHz/85 Hz
Display image:
Back raster pattern
Full White Pattern
X-Y Coordinates:
x = 0.283 ± 0.02,
y = 0.298 ± 0.02
ABL Luminance
Refer to 4-3-2(c)
Brightness:
Maximum
Contrast:
5 ft-L, 24 ft-L
1. Check whether the color coordinates of the
back raster satisfy the above spec.
If they do not, return to 4-3-2 (a) and readjust
all settings.
2. Display a full white pattern.
3. Select “Geometry” in softjig menu.
4. Select “@7: 5-ft “ in right menu.
5. Check whether the white coordinates of the
video meet the above coordinates spec.
6. Select “@8: 24-ft “ in right menu.
7. Check whether the white coordinates of the
video satisfies the above spec.
If they do not, return to 4-3-2 (a) and readjust
all settings.
Select “Color” and click “@2: CHANNEL 2”
for color ajdustment for 6500K
Repeat the sequence of 9300K adjustment.
The luminance values the same as 9300K, but
the color coordinated of back raster and white
box are : x = 0.313
±
0.03 y = 0.329
±
0.03
Select “Color” and click “@3: CHANNEL 3”
for color ajdustment for Video Mode.
The color coordinated of back raster and white
box are : x=270
±
0.03 y = 270
±
0.03
1
Adjust the luminance is 0.5~0.7 ft-L cut-off.
2
Adjust the luminance is 43ft-L at white Box
pattern.
3
ABL control to adjust 31ft-L at Full white
pattern.
4-3-3 Luminance Uniformity Check
Luminance is considered uniform only if the ratio
of lowest to highest brightness areas on the screen
is not less than 7.5:10.
CONDITIONS
Scanning frequency:
68 kHz/85 Hz
(1024 x 768)
Display image:
White flat field
Brightness:
Cut off point at 24 ft-L
Contrast:
Maximum
PROCEDURE
Measure luminance at nine points on the display
screen (see figure below).
4-3-4 Focus Adjustment
CONDITIONS
Scanning frequency:
68 kHz/85 Hz
(1024 x 768)
Display image:
“H” character pattern
Brightness:
Cut off point
Contrast:
Maximum
PROCEDURE
1. Adjust the Focus VR on the FBT to display the
sharpest image possible.
2. Use Locktite to seal the Focus VR in position.
Figure 4-10. Luminance Uniformity Check Locations
Summary of Contents for TT17J Series
Page 7: ...2 Product Specifications 2 4 TT17J Memo ...
Page 36: ...TT17J 6 1 6 Exploded View and Parts List ...
Page 37: ...Memo 6 Exploded View Parts List 6 2 TT17J ...
Page 38: ...TT17J 6 3 6 Exploded View and Parts List 6 1 Front Cover CRT Ass y ...
Page 39: ...6 Exploded View Parts List 6 4 TT17J 6 2 Chassis Stand Ass y ...
Page 40: ...6 Exploded View Parts List TT17J 6 5 6 3 Rear Cover Ass y ...
Page 41: ...Memo 6 Exploded View Parts List 6 6 TT17J ...
Page 59: ...Memo 8 Block Diagrams 8 2 TT17J ...
Page 61: ...Memo 9 Wiring Diagrams 9 2 TT17J ...
Page 64: ...10 Schematic Diagrams TT17J 10 3 17 19 16 20 15 20 22 24 10 2 Video Part Schematic Diagram ...
Page 66: ...10 Schematic Diagrams TT17J 10 5 10 3 Decoder Part Schematic Diagram ...
Page 67: ...10 Schematic Diagrams 10 6 TT17J 10 4 Jack Part Schematic Diagram ...
Page 68: ...10 Schematic Diagrams TT17J 10 7 10 5 Led Part Schematic Diagram ...
