Electrical Adjustment - Sharp XG-P25X Service Anleitung

XG-P25X
Hook up a signal generator, or a DOSV or Mac personal computer to the projector in order to feed the
signals specified in the Adjusting conditions.
No. Adjusting point
1 EEPROM
initialization
2 R drive
3 B drive
4 G drive
5 RGB 1 system
black level
signal amplitude
(odd-numbered)

ELECTRICAL ADJUSTMENT

Adjusting conditions
1. Turn on the power (make
sure the lamp lights up) and
warm up the unit for 15 min-
utes.
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
1. Feed the 100% blue-only
signal. Make the following
choice.
Group : A/D
Subject : B-D
1. Feed the 100% green-only
signal. Make the following
choice.
Group : A/D
Subject : G-D
1. Make the following choice:
Group : OUTPUT 1
Subject : G1-BLK
G1-GAIN
For green, choose the sub-
jects R1-BLK and R1-
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
Adjusting procedure
» 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 I/F unit not included, is
initialized. Do not execute S1 because otherwise
the PC board will be initialized.
To adjust the PC I/F unit, follow the instruction in
"Adjusting the PC Interface". (See page 34)
» Using the control switches or the remote controller
buttons, adjust the data so that the signal be-
comes bit-less (noise).
» Using the control switches or the remote controller
buttons, adjust the data so that the signal be-
comes bit-less (noise).
» Using the control switches or the remote controller
buttons, adjust the data so that the signal be-
comes bit-less (noise).
» Choose the subject G1-GAIN and adjust the sig-
nal amplitude to 3.8 ±0.05 Vp-p using the control
switches or the remote controller buttons.
» Next, choose the subject G-BLK and adjust the
white peak level to 2.1Vp-p ±0.1V.
2.1Vp-p
» Make the same adjustments for green and blue.
28
3.8Vp-p