Sharp VN-EZ1U Service Manual page 9

How to enter into the test mode (initial screen of TEST MODE)
1)
2)
3)
4)
Pressing the V key and MENU key, turn on the POWER switch.
When BUSY is displayed on the screen, release the V key and MENU key, and
the initial screen of the test mode will be displayed. (Refer to the center of the
following figure.)
Shift to each mode with the operation button of the main unit.
After setting is completed, press the MENU key, and it will return to the initial
screen of the test mode. Then turn off the power.
Color bar pattern
Screen of EEPROM SET
/
W/Y/Cy/GIMglRIBluelBlack
t
n
0
a
0
'I>
..:'.
v
POWER-
+ m
Initial screen of TEST MODE Initial screen of EEPROM INI
Version display +
Screen of WB ADJ
5-2-l. Method of displaying the test pattern
To inspect and adjust the liquid crystal the color bar and monochrome pattern can be displayed.
mMethod of displaying the color bar (75% modulated)
1) The initial screen of the test mode is displayed.
2) Press the A key to display the color bar.
3) Press the MENU key, and it will return to the initial screen of the test mode. Then turn off the power.
mMethod of displaying various patterns
1) The initial screen of the test mode is displayed.
2) Press the 4 key to display EEPROM SET screen.
3) Press the 4 key to display Address
1
FE of EEPROM.
4) Press the A key to set 00 as the data of Address 1 FE.
5) Press the A or V key to vary the data, and the patterns in the following table will be displayed.
Address (h) Data (h)
01
02
White signal 40%
Display pattern
I
1
White s&al 100%
I
03
1
Black signal
I
IFE
1
04
1 Color bar signal
I
05 Red signal:The signal level is the same as that of the color bar.
J
I
06
1
Green signaLThe signal level is the same as that of the color bar.
I
i 07
I
Blue signal:The signal level is the same as that of the color bar.
I
6) Set FF as the data of Address IFE of EEPROM.
7) Press the MENU key, and it will return to the initial screen of the test mode. Then turn off the power.
5-2