Chapter 2. Electrical Adjustment Electrical Adjustment - Sharp XR-32S-L Service Manual

CHAPTER 2.
XR32SL
ELECTRICAL ADJUSTMENT
[1] ELECTRICAL ADJUSTMENT
No. Adjusting point
1 Initialization of EEPROM
2 Model setting
3 CW index adjustment
4 R/G/B contrast adjustment
(manual or automatic adjust-
ment)
5 RGB white balance adjustment
6 sRGB white balance adjust-
ment
Adjusting conditions
1. Turn on the power (lamp lit) and carry out
aging operation for 15 minutes.
1. Select items as follows.
Group: CONFIRM
Adjustment item: MODEL
1. Signal input: Input the 256-STEP color bar.
XGA model: XGA 60Hz
SVGA model: SVGA 60Hz
2. Select items as follows.
Group: ADJUST
CW/AutoKS
Adjustment item: CW-INDEX
1. Select items as follows.
Group: ADJUST
AD/DLP
Adjustment item: R-CONT
G-CONT
B-CONT
(Process gamma interlocking)
2. Input the white signal of the amplitude level
at 96% (0.67Vpp) to the Computer terminal.
XGA model: XGA 60Hz
SVGA model: SVGA 60Hz
1. Input the 50% gray pattern signal to the
Computer terminal.
XGA model: XGA 60Hz
SVGA model: SVGA 60Hz
2. Select items as follows.
Group: ADJUST
AD/DLP
Adjustment item: R-GAIN
G-GAIN
B-GAIN
1. Input the 50% gray pattern signal to the
Computer terminal.
XGA model: XGA 60Hz
SVGA model: SVGA 60Hz
2. Select items as follows.
Group: CONFIRM/DLP
Adjustment item: S-G-OS
S-B-OS
2 – 1
XR-32S-L/XR-32X-L/PG-F212X-L
Service Manual
Adjusting procedure
1. Configure settings as shown below.
Press "S2551" to enter the process mode and
execute "SS2" of the SS menu.
1. XGA-PG/XG series
MODEL1 ... PG-F212X-L
2. XGA-XR series
MODEL0 ... XR-32X-L (Initial value)
3. SVGA-XR series
MODEL0 ... XR-32S-L
1. Input the signal to the COMPUTER terminal.
2. Select the adjustment item and carry out adjustment
so that there is no disharmony or noise in the R, G, B
and W lamp patterns.
W
R
G
B
* Also check that the intensity of the colors
including magenta appearing especially in
certain W gradation is minimized.
1. Observe the chromaticity value of the white window
pattern at 96% through CA100.
2. In the screen of bit error, increase the R/G/B-Contrast
value, and carry out adjustment so that the bit error is
caused in each of black to bright red, green and blue,
and the x value of R and the y value of G/B vary by
more than 100/1000.
3. If manually and visually adjust the screen of bit error,
carry out adjustment so that bright bit error of each
color appears in more than half of the screen.
1. Carry out adjustment as follows by increasing the
adjustment value of the second item (and onwards) in
R/G/B-GAIN from initial value 100 with the chromaticity
value at CL200.
(XR-32S-L, XR-32X-L)
x value: 300±5
y value: 318±5
(PG-F212X-L)
x value: 300±5
y value: 323±5
1. With the chromaticity value at CL200, adjust "S-G-OS"
and "S-B-OS" so that the x value is 313±5 and the y
value is 329±5, respectively.