XG-PH70X (serv.man3). Electrical Adjustment - Sharp Projector Service Manual (repair manual). Page 2

XG-PH70X/XG-PH70X-N

3 – 2

for reference / setting

6

Adjustment of 
component Cr/
Cb offset (1)

1. Feed the color difference signal
    (480i) to INPUT1
   : Y 0% brightness, Cb and Cr 0%
    white patterns.
2. Select the following group and
    subject.
    Group   : COMPO
    Subject : COMPO-AUTO

1. After signal input, select COMPO-AUTO for automatic adjustment.

7

Adjustment of 
component 
brightness

1. Feed the color difference signal
    (480i) to INPUT1
   : Y 0% brightness, Cb and Cr 0%
    white patterns.
2. Select the following group and
    subject.
    Group   : COMPO
    Subject : G-BRIGHT

1. Make adjustment so that some bits should be missing in the picture.
* refer to the following photo image

8

Adjustment of 
component Cr/
Cb offset (2)

1. Feed the color difference signal
    (480i) to INPUT1
   : Y 0% brightness, Cb and Cr 0%
    white patterns.
2. Select the following group and
    subject.
    Group   : COMPO
    Subject : CR-OFFSET

1. Reduce the CR-OFFSET value by 2 points.

9

Adjustment of 
RGB white bal-
ance

1. Feed the 50% gray pattern signal
    (XGA, 60 Hz) to INPUT1.
2. Select the following group and
    subject.
    Group     : DLP
    Subjects : R1-GAIN (Red)
                     B1-GAIN (Blue)

1. Adjust R1-GAIN and B1-GAIN so that x-value should be 290 

±3 and y-

    value 310 

± 3.

10

Adjustment of 
sRGB white bal-
ance

1. Feed the 50% gray pattern signal
    (XGA, 60 Hz) to INPUT1
2. Select the following group and
    subject.
    Group     : DLP
    Subjects : S-G1-GAIN (Green)
                     S-B1-GAIN (Blue)

1. Adjust S-G1-GAIN and S-B1-GAIN so that x-value should be 313 

±5 and y-

    value 329 

± 5.

11

adjustment of 
video white bal-
ance

1. Feed the 50% gray pattern signal
    (NTSC, burst signal) to INPUT4.
2. Select the following group and
    subject.
    Group     : DLPV
    Subjects : V-R1-GAIN (Red)
                     V-B1-GAIN (Blue)

1. Adjust V-R1-GAIN and V-B1-GAIN so that x-value should be 290 

± 3 and y- 

    value should be 310 

± 3.

12

Adjustment of 
DTV white bal-
ance

1. Feed the 50% gray pattern signal
    (480i, color difference signal) to
    INPUT1.
2. Select the following group and
    subject.
    Group     : DLPV
    Subjects : C-R1-GAIN (Red)
                     C-B1-GAIN (Blue)

1. Adjust C-R1-GAIN and C-B1-GAIN so that x-value should be 290 

± 3 and y-

    value should be 310 

± 3.

13

Factory settings 

1. Select the following group and
    subject.
    Group   : SSS
    Subject : S4 (North America)
                   S3 (Europe/Asia/Australia)
                   S5 (Japan)

1. Make the following settings.
    PH70XU : S4 (to north America)
    PH70X   : S5 (to Japan)
    Other     : S3 (to Europe/Asia/Australia)

S3

English

0IRE

S4

English

7.5IRE

S5

Japanese

0IRE