Read Sharp XG-NV4SE (serv.man4) Service Manual online
28
XG-NV4SE/SM
XG-NV40SA
XG-NV40SA
No.
Adjusting point
Adjusting conditions
Adjusting procedure
23
RGB
performance
check
performance
check
1. Receive the RGB signal.
»
In the process mode and select L4. Check the pic-
ture, brightness, red, blue, clock, phase, horizontal
position, and vertical position.
ture, brightness, red, blue, clock, phase, horizontal
position, and vertical position.
24
Off-timer
performance
check
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”.
the off-timer starts with “5” (minutes), counts down
each minute in 1 second, and turns off the set at “0”.
25
Thermistor
performance
check
performance
check
1. Heat the thermistor using a
dryer.
»
Make sure the “TEMP” is displayed.
S4
“Factory setting 4”
Remote controller
setting
setting
Process
adjustment
adjustment
»
Make the following settings.
26
Factory settings
27
Automatic
synchronization
synchronization
1. Receive the PHASE check
pattern signal.
»
Call the VGA/S-VGA/XGA mode and make sure
that the clock, phase, horizontal and vertical posi-
tions can be automatically adjusted.
that the clock, phase, horizontal and vertical posi-
tions can be automatically adjusted.
ADJUSTING THE PC BOARD (CPCi-0029CE01/02. PC I/F Unit)
1. Initializing the EEPROM
1)
Press the S5001 key to call the process mode.
2)
2. Adjusting the level settings
2-1. Oscilloscope range setting
Set the range to DC 1V/div. and 5µs/div.
2-2. Input signal
Feed the SVGA 800x600 60Hz gradation waveform signal.
2-3. Adjusting and checking the level settings
1)
Press the S5001 key to call the process mode.
2)
Adjust the SH-PHASE setting on the "OUTPUT 3" menu until the "OUTPUT 3" characters are not blurry any
longer.
longer.
3)
Connect a oscilloscope to TP2. Adjust the BRIGHT setting of "OUTPUT 2" to have the black level of the signal
at 1.7V.
at 1.7V.
4)
Adjust the ROS setting on the A/D menu until the voltage at the positive pole of C64 or pin (2) of IC11 becomes
1.7V.
1.7V.
5)
Adjust the GOS setting on the A/D menu until the voltage at the positive pole of C57 or pin (2) of IC10 becomes
1.7V.
1.7V.
6)
Adjust the BOS setting on the A/D menu until the voltage at the positive pole of C50 or pin (2) of IC9 becomes
1.7V.
1.7V.
7)
Make sure the GAIN setting on the A/D menu is 163.
8)
Connect the oscilloscope to TP1. Adjust the R-D setting on the A/D menu until the white top level of the signal
becomes 3.6V. (Make sure that both the black and white graduations are visible clearly.)
becomes 3.6V. (Make sure that both the black and white graduations are visible clearly.)
9)
Connect the oscilloscope to TP3. Adjust the B-D setting on the A/D menu until the white top level of the signal
becomes 3.6V. (Make sure that both the black and white graduations are visible clearly.)
becomes 3.6V. (Make sure that both the black and white graduations are visible clearly.)
10) Connect the oscilloscope to TP2. Adjust the G-D setting on the A/D menu until the white top level of the signal
becomes 3.6V. (Make sure that both the black and white graduations are visible clearly.)
11) Increase the brightness level of OUTPUT 2 by 10 points.
12) Press the S5001 key to exit from the process mode.
12) Press the S5001 key to exit from the process mode.
