Adjustment - Sony SDM-S204 Service Manual

1. Procedures of how to go to service mode.
1) Enter the service mode of this unit by turning on the
power while pressing and holding the " " key and
" " simultaneously.
2) Press "MENU" key----MAINTAIN.
3) Press "OK" key to enter the service menu.
4) Select the desired function.
5) Press the "MENU" key to exit OSD.
6) Turn off the power and then turn on it again. The
monitor then enters the normal mode.
To enter the service again, repeat the procedure
described above.
Note
W/B readjustment is required after the panel, board
and microcomputer are replaced. However, be sure to
perform aging for more than 30 minutes for RGB reset
before W/B adjustment.
2. Setup
1) Prepare timing and pattern data for a signal
generator according to the Sony timing specifications.
2) Connect a monitor video cable to the signal generator.
3) Put Color Analyzer(ex. CA-110) 50cm away from the
monitor, specify it vertically in the center of the
display, and adjust the focus to the optimum level
using an eyepiece.
4) Put the monitor and Color Analyzer(ex. CA-110) in a
light-shielded room.
5) Set up [SERVICE MODE] of the monitor.
3. Operation
Data is manually set to improve the productivity. The
brightness, contrast, and backlight are set to 50, 70
and 100 respectively. After that, the default data of the
color temperature to be adjusted is set.

ADJUSTMENT

4. Warm up time
Warm up for 30 minutes before performing any
adjustment.
5. Adjustment for White Balance
a. Display SMPTE at SXGA/60Hz(Input level 0.73V /INPUT1).
b. Set up [SERVICE MODE].
c. Click "CLEAR EEPROM" and AC Power off.
d. Set up [SERVICE MODE] of the monitor again.
e. Click "WHITE BALANCE" and then select "AUTO".
f. Prepare timing and full black pattern.
g. Click "OFFSET CALIBRATION".
h. After offset calibration is completed prepare full
white pattern.
i. Click " GAIN CALIBRATION".
6. 9300K color adjustment
a. Select "9300K" in "COLOR TEMP" and enter.
b. Use a 100 IRE ALL white video field in the
primary mode.(INPUT level 0.7V)
c. Adjust the color temperature.
( X: 0.283 Y: 0.298 )
d. Press "MENU" key to exit adjust mode.
7. 6500K color adjustment
a. Select "6500K" in "COLOR TEMP" and enter.
b. Repeat the adjustment procedure as steps b to d at
9300K. ( X: 0.313 Y: 0.329 )
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