DOWNLOAD Sharp XG-P10XE (serv.man2) Service Manual ↓ Size: 909.4 KB | Pages: 46 in PDF or view online for FREE

1. Turn on the power (make

sure the lamp lights up) and
warm up the unit for 15 min-
utes.

»

Make the following settings:
Press S2601 to call up the process mode and
execute S2 and S4 in the SSS menu. Now the
system, with the PC board not included, is initial-
ized. Do not execute S1 because otherwise the
PC board will be initialized.
To adjust the PC board, follow the instruction in
"Adjusting the PC Interface". (See page 32)

1. Make the following choice.

Group : A/D

2. Feed the 100% red-only sig-

nal. Make the following
choice.
Group : A/D
Subject : R-D

»

Using the control switches or the remote controller
buttons, adjust the data so that the signal be-
comes bit-less (noise).

1. Feed the 100% blue-only

signal. Make the following
choice.
Group : A/D
Subject : B-D

»

Using the control switches or the remote controller
buttons, adjust the data so that the signal be-
comes bit-less (noise).

1. Feed the 100% green-only

signal. Make the following
choice.
Group : A/D
Subject : G-D

»

Using the control switches or the remote controller
buttons, adjust the data so that the signal be-
comes bit-less (noise).

1. Turn on the power.

2. Connect the digital voltme-

ter to TP7201.

»

Adjust VR704 so that the voltmeter should read
3.300 V ±100 mV.

1. Turn on the power.

2. Connect the digital voltme-

ter to TP7202.

»

Adjust R705 so that the voltmeter should read
2.600 V ±50 mV.

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 RCK-, GCK- and
BCK-PHASE settings 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.

»

 Choose the subject R1-GAIN and adjust the sig-
nal amplitude to 3.25 ±0.03 Vp-p using the control
switches or the remote controller buttons.

»

Next, choose the subject R1-BLK and adjust the
white peak level to 2.25Vp-p ±0.02V.

1. Make the following choice:

Group : OUTPUT 1
Subject : R1-BLK

R1-GAIN

For green, choose the sub-

    jects G1-BLK and G1-

GAIN.
For blue, choose the sub-
jects B1-BLK and B1-GAIN.

2. Connect the oscilloscope to

TP1101  for red.

    TP1201  for green
    TP1301  for blue

3.25Vp-p

2.25Vp-p

1. Feed the 50% R, G, B pat-

tern signal.

2. Select the following subject.

Group : OUTPUT2
Subject : R-OFFSET

Select the subjects G-OFF-
SET and B-OFFSET for the
green and blue colours, re-
spectively.

»

Using the control switches or the remoto controller
buttons, adjust the every 6 dots vertical lienes are
same brightness.

1. Connect the oscilloscope to

TP1102 for red.

    TP1202 for green
    TP1302 for blue.

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 colours, make sure their wave-
forms are similar to that of the red colour.

2.5V DC

5.0V DC

GND

PSIG

(Adjust with PSIG-L.)

(Adjust with PSIG-H.)  

»

Make the same adjustments for green and blue.

1. Feed the black-and-red

(25%) stripe signal (XGA).

2. Make the following choice:

Group : OUTPUT 3
Subject : RC (R)

»

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 32-step gray scale

signal (XGA 60Hz).
Group : OUTPUT 1
Subject : R1-BLK (R)

R1-GAIN(R)
B1-BLK (B)
B1-GAIN(B)

»

Adjust the R1-BLK and B1-BLK data for the black
balance on the gray scale. Then adjust the R1-
GAIN and B1-GAIN data for the center-to-white
balance on the gray scale.
(Adjust to the best point.)

1. Feed the INFO COM. gray

scale and colour 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. Feed the NTSC mono-

scope pattern signal.

2. Group : VIDEO 2

Subject : N358-DLY     (0)

N443-DLY     (0)
PAL-DLY       (3)
SECAM-DLY (0)

Make sure the settings are

    as above.

3. Group : VIDEO 1

Subject : NTSC-H

»

Using the control switches or the remote controller
buttons, adjust the data to have the same
overscan.

4

8

12

249 251

1. Feed the split colour bar

signal.
Group : VIDEO 1
Subject : PICTURE

2. Connect the oscilloscope

between pin (1) of P801
and GND.

»

Using the control switches or the remote controller
buttons, adjust the black-to-white (100%) level
difference to 1.2 ±0.03 Vp-p.

100% White

1.2Vp-p

1. Feed the split colour bar

signal.
Group : VIDEO 2
Subject : VBOS(R)

VROS(G)
VROS(B)

2. Press the control switch or

mute button of R/C.
(GAMMA compensation is
set up for the process.).

»

Using the control switches or the remote controller
buttons, adjust the black portion of the signal
becomes bit-less.

1. Feed the split colour bar

signal.
Group : VIDEO 1
Subject : TINT

2. Connect the oscilloscope to

pin (4) of P801.

»

Using the control switches or the remote controller
buttons, adjust the data to have the -(B-Y) wave-
form downhill straight.

1. Feed the split colour bar

signal.
Group : VIDEO 1
Subject : AGC

2. Press the control switch or

the remote control’s mute
button (to set the gamma
correction to the process
setting).

»

Using the control switches or the remote controller
buttons, adjust the 100% portion of white signal
becomes bit-less .

1. Feed the baseband (split

colour bar) signal.
Group : VIDEO 1
Subject : BRIGHT

2. Press the control switch or

the remote control’s mute
button (to set the gamma
correction to the process
setting).

»

Using the control switches or the remote controller
buttons, adjust the setting until the black signal
becomes bit-less.

100% White Red

1. Feed the split colour bar

signal.
Group : VIDEO 1
Subject : N-COLOR

2. Connect the oscilloscope to

pin (1) of P801.

»

Using the control switches or the remote controller
buttons, adjust the difference between the 100%
white portion and the red portion to 0.10 ±0.02 Vp-p.

   (same as 100% white)