Read Sharp XG-C40XE (serv.man4) Service Manual online
25
XG-C40XU/XE
3.3Vp-p
(Adjust to 2.6V
DC for red and
blue.)
DC for red and
blue.)
(Adjust to 3.3Vp-p
for green and blue.)
for green and blue.)
2.6V
ELECTRICAL ADJUSTMENT
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.
signals specified in the Adjusting conditions.
No.
Adjusting point
Adjusting conditions
Adjusting procedure
1
EEPROM
initialization
initialization
1. Turn on the power (make
sure the lamp lights up) and
warm up the unit for 15 min-
utes.
warm up the unit for 15 min-
utes.
»
Make the following settings:
Press SW5101 to call up the process mode and
execute S2 in the SSS menu. Now the system,
with the PC board not included, is initialized. Do
not execute S1 because otherwise the PC board
will be initialized.
To adjust the PC board, follow the instruction in
"Adjusting the PC board". (See page 31)
Press SW5101 to call up the process mode and
execute S2 in the SSS menu. Now the system,
with the PC board not included, is initialized. Do
not execute S1 because otherwise the PC board
will be initialized.
To adjust the PC board, follow the instruction in
"Adjusting the PC board". (See page 31)
2
3.3V power
supply
adjustment
supply
adjustment
1. Turn on the power.
2. Connect the digital voltme-
2. Connect the digital voltme-
ter to TP1446.
»
Adjust R1649 so that the voltmeter should read
3.43
3.43
±
0.03 Vp-p.
3
2.5V power
supply
adjustment
supply
adjustment
1. Turn on the power.
2. Connect the digital voltme-
2. Connect the digital voltme-
ter to TP1447.
»
Adjust R1652 so that the voltmeter should read
2.60
2.60
±
0.05 Vp-p.
4
R drive
»
Using the control switches or the remote controller
buttons, adjust the data so that the signal be-
comes bit-less (noise).
buttons, adjust the data so that the signal be-
comes bit-less (noise).
1. Feed the 100% red-only sig-
nal. Make the following
choice.
Group : A/D
Subject : R-D
choice.
Group : A/D
Subject : R-D
5
B drive
1. Feed the 100% blue-only
signal. Make the following
choice.
Group : A/D
Subject : B-D
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).
buttons, adjust the data so that the signal be-
comes bit-less (noise).
6
G drive
1. Feed the 100% green-only
signal. Make the following
choice.
Group : A/D
Subject : G-D
choice.
Group : A/D
Subject : G-D
»
Using the control switches or the remote controller
buttons, adjust the data so that the signal becomes
bit-less (noise).
buttons, adjust the data so that the signal becomes
bit-less (noise).
7
RGB 1 system
black level
signal amplitude
(odd-numbered)
black level
signal amplitude
(odd-numbered)
1. Make the following choice:
Group : OUTPUT 1
Subject : G1-BLK
Subject : G1-BLK
G1-GAIN
For red, choose the sub-
jects R1-BLK and R1-GAIN.
For blue, choose the sub-
jects B1-BLK and B1-GAIN.
jects B1-BLK and B1-GAIN.
2. Connect the oscilloscope to
TP1101 for red.
TP1201 for green
TP1301 for blue
TP1301 for blue
»
Choose the subject G1-GAIN and adjust the sig-
nal amplitude to 3.3
nal amplitude to 3.3
±
0.1 Vp-p using the control
switches or the remote controller buttons.
»
Next,choose the subject G1-BLK and adjust the
white to white level to 2.6
white to white level to 2.6
±
0.1V DC.
»
Adjust the signal's amplitude and white to white
level to 3.3
level to 3.3
±
0.1Vp-p and 2.6
±
0.1V DC, respec-
tively, for red and blue.
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