DOWNLOAD Sharp XG-NV7XE (serv.man3) Service Manual ↓ Size: 1.04 MB | Pages: 43 in PDF or view online for FREE

Model
XG-NV7XE (serv.man3)
Pages
43
Size
1.04 MB
Type
PDF
Document
Service Manual
Brand
Device
Projector / Service Instructions, Troubleshooting Intro to DMD
File
xg-nv7xe-sm3.pdf
Date

Sharp XG-NV7XE (serv.man3) Service Manual ▷ View online

25
XG-NV7XE
XG-NV7XM
No.
Adjusting point
Adjusting conditions
Adjusting procedure
15
PAL color
saturation level
1. Feed the PAL color bar sig-
nal.
Group : VIDEO 1
Subject : P-COLOR
2. Connect the oscilloscope to
TP804.
»
Using the control switches or the remote controller
buttons, adjust the difference between the 100%
white portion and the red portion to 0.28 ±0.02 Vp-p.
16
SECAM color
saturation level
1. Feed the SECAM color bar
signal.
Group : VIDEO 1
Subject : S-COLOR
2. Connect the oscilloscope to
TP804.
»
Using the control switches or the remote controller
buttons, adjust the data to have a level difference
of 0.28 ±0.02 Vp-p between the 100% white
portion and the red portion.
17
Video white
balance
1. Feed the NTSC mono-
scope pattern signal
Group : VIDEO 2
Subject : R OFF-SET
B OFF-SET
»
Using the control switches or the remote controller
buttons, adjust so that the entire screen looks
evenly colorless.
100% White Red
100% White Red
18
DVD Contrast
1. Feed the color bar signal of
the 480I component signal to
the D-SUB input terminal.
2. Select the following subject.
Group : DVD
Subject : CONTRAST
3. Connect the oscilloscope to
TP805.
»
Using the control switch or the button on the
remote controller, adjust the amplitude between
the black and 100% white to 2.1 ±0.02 Vp-p.
100% White
2.1
±
0.02Vp-p
19
DVD Tint
1. Feed the color bar signal of
the 480I component signal
to the D-SUB input termi-
nals. Feed the sync signal
only for the Y signal.
2. Select the following subject.
Group : DVD
Subject : TINT
3. Connect the oscilloscope to
TP807.
»
Using the control switch or the button on the
remote controller, adjust the B-Y waveform to form
a straight slope.
26
XG-NV7XE
XG-NV7XM
No.
Adjusting point
Adjusting conditions
Adjusting procedure
21
Color system
performance
check
1. Receive the color bar sig-
nal.
»
In the process mode and select L1. Check the color
and tint.
23
Audio system
performance
check
»
In the process mode nad select L3. Check the bass,
treble and balance.
22
Video system
performance
check
1. Receive the monoscope
pattern signal.
»
In the process mode and select L2. Check the pic-
ture, brightness and sharpness.
20
DVD Color
1. Feed the color bar signal of
the 480I component signal to
the D-SUB input terminal.
2. Select the following subject.
 Group : DVD
Subject : COLOR
3. Connect the oscilloscope to
TP804.
»
Adjust the level difference between the 100% white
and red portions to 0.1 ±0.02 Vp-p.
100% White Red
24
RGB1
performance
check
1. Receive the RGB1 signal.
»
In the process mode and select L4. Check the pic-
ture, brightness, red, blue, clock, phase, horizontal
position, and vertical position.
26
Off-timer
performance
check
»
In the process mode and select OFF. Make sure that
the off-timer starts with “5” (minutes), counts down
each minute in 1 second, and turns off the set at “0”.
25
RGB2
panel link video
check
1. Make the following settings:
RGB2 mode and XGA spe-
cific for panel link. Enter the
32-step gradation pattern.
»
Make sure that the gradation pattern is not corrupted
and that the black portion is not too sinking.
27
XG-NV7XE
XG-NV7XM
No.
Adjusting point
Adjusting conditions
Adjusting procedure
S4
“Factory setting 4”
Remote controller
setting
Process
adjustment
»
Make the following settings.
32
Factory settings
30
IrDA
performance
check
»
Make sure the IrDA signal can be received.
31
Keystone
correction
performance
check
»
Make sure the keystone correction functions well.
27
Thermistor
performance
check
1. Heat the thermistor using a
dryer.
»
Make sure the “TEMP” is displayed.
28
Automatic
synchronization
RGB1
(ANALOG)
1. Receive the PHASE check
pattern signal.
»
Call the VGA/S-VGA/XGA/SXGA/UXGA mode and
make sure that the clock, phase, horizontal and
vertical positions can be automatically adjusted.
1. Receive the PHASE check
pattern signal.
29
Auto sync RGB
2 (panel link)
»
In the VGA/S-VGA/XGA/SXGA modes, make sure
that the H-POS and V-POS can be automatically
adjusted.
28
XG-NV7XE
XG-NV7XM
ADJUSTING THE PC INTERFACE (CPCi-0036CE03/04. PC I/F Unit)
1. Initializing the EEPROM
1) Press the S5001 switch to call the process mode.
2) Pick up the item S1 on the SSS menu. (The S1 is used to initialize the PC interface alone. Do not select the
item S2 because otherwise the other data than the PC interface will be initialized.)
2.  Adjusting the levels
1
Oscilloscope setting
Set the range to DC 1 V/div. and 5 µ s/div.
2
Input signal
Feed the XGA 1024x768, 60Hz gradation waveform signal and the DTV (720P for example) signal.
3
Level adjustment and checking
1) Press the S5001 switch to call the process mode.
2) Adjust R750 so that the voltage at test point TL119 be 2.6 ±0.05V.
3) Set the BRIGHT data on the A/D menu to 125.
4) Adjust the R-BRIGHT data on the A/D menu so that the voltage at TP3 be 1.7V.
5) Adjust the G-BRIGHT data on the A/D menu so that the voltage at TP2 be 1.7V.
6) Adjust the B-BRIGHT data on the A/D menu so that the voltage at TP1 be 1.7V.
7) Make sure that the GAIN data on the A/D menu is 155.
8) Connect the synchroscope to TP3. Adjust the R-D data on the A/D menu so that the signal’s white peak be
3.6V. (Be also sure that the white and black portions of the gradation are not corrupted.)
9) Connect the synchroscope to TP1. Adjust the B-D data on the A/D menu so that the signal’s white peak be
3.6V. (Be also sure that the white and black portions of the gradation are not corrupted.)
10) Connect the synchroscope to TP2. Adjust the G-D data on the A/D menu so that the signal’s white peak
be 3.6V. (Be also sure that the white and black portions of the gradation are not corrupted.)
11) Feed the DTV signal instead. Enter only the Y component, not the Pb and Pr components.
12) Adjust the R-BRIGHT data on the DTV menu so that the voltage at TP3 be 2.65V.
13) Adjust the B-BRIGHT data on the DTV menu so that the voltage at TP1 be 2.65V.
14) Press the S5001 switch to exit the process mode.
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