SONY SDM-S71R HOW TO ENTER SERVICE MODE - SONY SDM-S71R - TFT LCD COLOR COMPUTER DISPLAY

HOW TO ENTER SERVICE MODE - SONY SDM-S71R - TFT LCD COLOR COMPUTER DISPLAY

Service Mode _ White Balance Adjustment _ SDM-S71R - TFT LCD COLOUR COMPUTER DISPLAY _ US _ Canadian & AEP Models

 

SERVICE MODE

* On the stand-by mode, press “Power “ key while pressing “DN “ key. The monitor goes into service mode.
* Press “MENU” key.
* Once press key and select the mark “S” on the second page.
* Press “OK” key to go to “MAINTAIN” (service menu).
* Select one of features.
* Press “MENU” key to exit service mode.
* Turn power off then on again, the monitor goes to normal mode.  If you would like to set the monitor to service mode again, repeat the above procedure.

Note: If the TFT panel or A board is replaced, be sure to perform the W/B adjustment again.  Before the W/B adjustment, the no signal aging is needed for 30 minutes or more.

All Mode Recall: On the stand-by mode, press Power key while pressing “OK” key. Clears user’s memory, resets BACK-LIGHT,CONTRAST, BRIGHTNESS, PHASE, PITCH, CENTER, COLOR, USER ADJUSTMENT COLOR GAMMA, MENU POSITION, POWERSAVE, LANGUAGE, MENU LOCK to default values. Also clears Aging

Mode. After executing this command, be sure to put AC power cord out and in to set the default values. (Refreshing is required.)
Aging mode: On the stand-by mode, press “Power “ key while pressing “ UP “key. The monitor goes into the no signal aging mode.  To release the aging mode setting, turn off the aging bit in service mode or execute All Mode Recall.
Clear ETI: On the stand-by mode, press “ Power “ key while pressing “ Brightness control “ key. The monitor information data during EDID is copied to the microcomputer and clears ETI to zero.

WHITE BALANCE ADJUSTMENT

Equipments required
Signal generator: VG819 or equivalent (Be sure to confirm the output level of the analog RGB out 75 ohm terminated.) Color analyzer: MINOLTA CS1000 or equivalent.

> Confirm the centre of screen by feeding the cross pattern, and set the color analyzer at the 50cm distance from the centre of the screen.  Set the monitor to Aging mode for 30 minutes or more.

Setting
> On the service mode, set Bright=50, Contrast=70 and Backlight=100.
> Be sure to set the menu display position off from the measuring point.
> Feed the attached specification timing signal to the monitor.

> Feed the attached calibration timing all white signal. At this time, check each R, G and B signal output is 0.73Vp-p (75ohm terminated).
> Select and execute “WHITE BALANCE” command in service menu.
> Switch the signal to the 35IRE all gray, select “COLORTEMP 9300K”. (The signal output level should be 0.245V at 75ohm terminated.)

> Put the SUB CONTRAST R/G/B data in “WHITE BALANCE” calibration down 25 degrees evenly.
> Adjust the R, G and B data of SUB CONTRAST to the specified value below. (Be sure to adjust by reducing each data.)

9300K x=0.283 ±0.003 y=0.298±0.003

Continuously feeding the 35IRE all gray signal, select “COLORTEMP 6500K”.
> Put the SUB CONTRAST R/G/B data in “WHITE BALANCE” calibration down 25 degrees evenly.
> Adjust the R, G and B data of SUB CONTRAST to the specified value below. (Be sure to adjust by reducing each data.)

6500K x=0.313 ±0.003 y=0.329±0.003

Turn power off to release the service mode.