XG-P25XE (serv.man11). Electrical adjustment - Sharp Projector Service Manual (repair manual). Page 2

1. Feed the XGA mode 75-Hz

black signal.

2. Make the following choice:

Group : OUTPUT 3
Subject : SH-PHASE
(Have the standard level at
8.)
Fix the GCK-PHASE set-
tings all to 8.

»

Using the control switches or the remote controller
buttons, make sure that the “OUTPUT 3” charac-
ters are not blurry and there is no ghost image. If
such blur or ghost occurs, finely adjust the setting
in the range of 7~9.

1. Feed the black-and-red

(25%) stripe signal (XGA).

2. Make the following choice:

Group : OUTPUT 3
Subject : RC (R)

: BC (B)
: GC (G)

»

Using the control switches or the remote controller
buttons, adjust the data in order to minimize the
flicker.

»

Make the same adjustment for BC (B) and GC (G).

»

See if the image is equally adjusted at the center
and both sides of the screen. If not, readjust the
setting to have the image equal at right and left.

1. Feed the INFO COM. gray

scale and color bar pattern.

2. Make the following choice:

Group : OUTPUT 1
Subject : G1-BLK

»

Make sure that scale (white side) to No.251 and
scale (black side) to No.8 can be seen.

»

If white scale can't be seen properly, readjust with
G1-BLK.

1. Connect the oscilloscope to

TP1102 for red.

2. Make the following choice:

Group : OUTPUT 2
Subject : PSIG-H

: PSIG-L

»

Adjust the PSIG waveform to the one shown below.

»

For the green and blue colors, make sure their wave-
forms are similar to that of the red color.

2.5V DC

5.0V DC

GND

PSIG

(Adjust with PSIG-L.)

(Adjust with PSIG-H.)  

4

8

12

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