Read Sharp XG-NV5XE (serv.man42) Service Manual online
22
XG-NV5XE
XG-NV5XM
XG-NV5XM
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 S5001 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 28)
Press S5001 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 28)
4
R drive
1. Make the following choice.
Group : A/D
Subject : GAIN
Make sure the GAIN value
is 163.
Subject : GAIN
Make sure the GAIN value
is 163.
2. Feed the 100% red-only sig-
nal. Make the following
choice.
Group : A/D
Subject : R-D
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).
buttons, adjust the data so that the signal be-
comes bit-less (noise).
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 be-
comes bit-less (noise).
buttons, adjust the data so that the signal be-
comes bit-less (noise).
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
3.325 V ±100 mV.
3.325 V ±100 mV.
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
2.625 V ±50 mV.
2.625 V ±50 mV.
23
XG-NV5XE
XG-NV5XM
XG-NV5XM
No.
Adjusting point
Adjusting conditions
Adjusting procedure
7
RGB 1 system
black level
signal amplitude
(odd-numbered)
black level
signal amplitude
(odd-numbered)
»
Choose the subject R1-GAIN and adjust the sig-
nal amplitude to 3.6 ±0.1 Vp-p using the control
switches or the remote controller buttons.
nal amplitude to 3.6 ±0.1 Vp-p using the control
switches or the remote controller buttons.
»
Next,choose the subject R-BLK and adjust the black
peak level to 3.2 ±0.1V DC.
peak level to 3.2 ±0.1V DC.
1. Make the following choice:
Group : OUTPUT 1
Subject : R1-BLK
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.
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
TP1301 for blue
8
P SIGNAL
1. Connect the oscilloscope to
TP1102 for red.
TP1202 for green
TP1302 for blue.
TP1302 for blue.
2. Make the following choice:
Group : OUTPUT 2
Subject : PSIG-H
Subject : PSIG-H
PSIG-L
»
Adjust the PSIG waveform to the one shown below.
»
For the green and blue colours, make sure
theirwaveforms are similar to that of the red colour.
theirwaveforms are similar to that of the red colour.
9
Sample-and-
hold pulse
phase
RCK-PHASE
GCK-PHASE
BCK-PHASE
hold pulse
phase
RCK-PHASE
GCK-PHASE
BCK-PHASE
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.
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.
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.
»
Adjust the signal's amplitude and maximum black
level to 3.3 ± 0.1Vp-p and 3.4 ± 0.1V DC, respec-
tively, for green and blue.
level to 3.3 ± 0.1Vp-p and 3.4 ± 0.1V DC, respec-
tively, for green and blue.
3.6Vp-p
3.2V DC
(Adjust to 3.4V DC for green and blue.)
(Adjust to 3.4V DC for green and blue.)
(Adjust to 3.3Vp-p
for green and blue.)
for green and blue.)
2.3V DC
5.9V DC
GND
7.8V DC
PSIG
(Adjust with PSIG-L.)
(Adjust with PSIG-H.)
24
XG-NV5XE
XG-NV5XM
XG-NV5XM
No.
Adjusting point
Adjusting conditions
Adjusting procedure
10
RGB counter-
voltage
adjustment
voltage
adjustment
1. Feed the black-and-red
(25%) stripe signal (XGA).
2. Make the following choice:
Group : OUTPUT 3
Subject : RC (R)
Subject : RC (R)
»
Using the control switches or the remote controller
buttons, adjust the data in order to minimize the
flicker.
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.
and both sides of the screen. If not, readjust the
setting to have the image equal at right and left.
12
RGB white
balance
balance
1. Feed the 32-step gray scale
signal (XGA).
Group : OUTPUT 1
Subject : R1-BLK (R)
Group : OUTPUT 1
Subject : R1-BLK (R)
B1-BLK (B)
»
Choose the subjects R1-BLK and B1-BLK and
adjust the black balance of the gradation.
adjust the black balance of the gradation.
11
RGB gradation
regeneration
adjustment
regeneration
adjustment
1. F e e d t h e g r e e n - o n l y
SMPTE pattern signal.
Group : OUTPUT 1
Subject : G1-BLK
Group : OUTPUT 1
Subject : G1-BLK
»
Adjust the G-GAIN data until the gradation of the
portion
portion
1
(95% and 100% white) shown below
can be slightly recognized. Make sure also that
the gradation of the portion
the gradation of the portion
2
(0% and 5% black)
is visible.
14
Video picture
adjustment
adjustment
1. Feed the split colour bar
signal.
Group : VIDEO 1
Subject : PICTURE
Group : VIDEO 1
Subject : PICTURE
2. Connect the oscilloscope
between pin (2) of P801
and GND.
and GND.
»
Using the control switches or the remote controller
buttons, adjust the black-to-white (100%) level
difference to 2.2 ±0.02 Vp-p.
buttons, adjust the black-to-white (100%) level
difference to 2.2 ±0.02 Vp-p.
13
Horizontal
center
center
1. Feed the NTSC mono-
scope pattern signal.
2. Group : VIDEO 2
Subject : N358-DLY (4)
N443-DLY (0)
PAL-DLY (0)
SECAM-DLY (0)
PAL-DLY (0)
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.
buttons, adjust the data to have the same
overscan.
2.2Vp-p
1
2
25
XG-NV5XE
XG-NV5XM
XG-NV5XM
No.
Adjusting point
Adjusting conditions
Adjusting procedure
15
Video AGC
1. Feed the split colour bar
signal.
Group : VIDEO 1
Subject : AGC
Group : VIDEO 1
Subject : AGC
2. Connect the oscilloscope
between pin (2) of P801
and GND.
and GND.
»
Using the control switches or the remote controller
buttons, adjust the black-to-white (100%) level
difference to 1.65 ±0.02 Vp-p.
buttons, adjust the black-to-white (100%) level
difference to 1.65 ±0.02 Vp-p.
16
Video
brightness
adjustment
brightness
adjustment
1. Feed the baseband (split
colour bar) signal. (The ON-
AIR signal is not accepted
because of its too much
noise.)
Group : VIDEO 1
Subject : BRIGHT
AIR signal is not accepted
because of its too much
noise.)
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).
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 and set to -2 point of value.
buttons, adjust the setting until the black signal
becomes bit-less and set to -2 point of value.
18
NTSC colour
saturation level
saturation level
1. Feed the split colour bar
signal.
Group : VIDEO 1
Subject : N-COLOR
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 0.15 ±0.02 Vp-p.
buttons, adjust the difference between the 100%
white portion and the red portion to 0.15 ±0.02 Vp-p.
(same as 100% white)
17
Tint
1. Feed the split colour bar
signal.
Group : VIDEO 1
Subject : TINT
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.
buttons, adjust the data to have the -(B-Y) wave-
form downhill straight.
1.65Vp-p
100% White Red