Friday, May 06, 2016

Sony VPL-VW50 – How to access Service mode – White balance adjustment – Power supply circuit diagram – Projector repair and Service


Sony VPL-VW50

Service Mode Setting
1. Set the “Screen” of "Preferences” to “On” in the MENU.
2. MENU is erased.
3. Press the keys in the following order:
“ENTER” > “ENTER” > “LEFT”  > “ENTER”
4. The message “Do you wish to enter into the SERVICE MODE? Yes No” will be displayed.
5. Select “Yes”.
Note
When leaving the FACTORY MODE,
“Do you wish to return to the USER MODE? Yes No” will be displayed. Select “Yes”.
Note that when the items (W/B, Device Adjust) that can be adjusted in the Factory mode are adjusted and stored in memory, they are saved in NVM and the factory
default data will be lost. Be sure to perform "Save to memory" after entering and exiting the Gamma adjustment mode. If the values are changed in the Gamma adjustment mode and the original values cannot be restored, turn off the power to the unit and turn it on again. The UF data does not change even if the mode for Advanced Iris in Cinema Black Pro in Picture Adjust is changed without performing "Save to memory". When "Save to memory" is performed at that time, the UF data of each Iris mode will be overwritten and lost.
White Balance Adjustment on Servicing
Component
Preparation
Set Picture Mode to “Standard” and make the following
settings.
Contrast: 80
Bright: 50
Color: 50
Hue: 50
Sharpness: 50
NR: OFF
Black Level Adjust: OFF
Gamma Correction: OFF
Advanced Iris: OFF
Set each GAIN and each BIAS for RGB to 128.
Bring the ZOOM position of the lens to the center.
Adjustment High
Set Color Temp to “High”.
Input 1080/60i 20 IRE flat field (RGB 3 color) into the component terminal and adjust R for white balance and BIAS for G until the chromaticity (x20, y20) is at the standard value.
(x20, y20) = (0.284 ±0.002, 0.298 ±0.002)
Input 1080/60i 80 IRE flat field (RGB 3 color) into the component terminal and adjust B for white balance and GAIN for G until the chromaticity (x80, y80) is at the standard value.
(x80, y80) = (0.284 ±0.002, 0.298 ±0.002)
Continue adjusting 80 IRE and 20 IRE until they reach standard values.
If the BIAS value for B falls below 90, redo the adjustments using G and B. Save the adjusted values.
Middle
Set Color Temp to “Middle”.
Input 1080/60i 20 IRE flat field (RGB 3 color) into the component terminal and adjust R for white balance and BIAS for G until the chromaticity (x20, y20) is at the standard value.
(x20, y20) = (0.294 ±0.002, 0.310 ±0.002)
Input 1080/60i 80 IRE flat field (RGB 3 color) into the component terminal and adjust B for white balance and GAIN for G until the chromaticity (x80, y80) is at the standard value.
(x80, y80) = (0.294 ±0.002, 0.310 ±0.002) Continue adjusting 80 IRE and 20 IRE until they reach standard values.
If the BIAS value for B falls below 90, redo the adjustments using G and B.
Save the adjusted values
Low
Set Color Temp to “Low”.
Input 1080/60i 20 IRE flat field (RGB 3 color) into the component terminal and adjust B for white balance and BIAS for G until the chromaticity (x20, y20) is at the standard value.
(x20, y20) = (0.313 ±0.002, 0.329 ±0.002)
Input 1080/60i 80 IRE flat field (RGB 3 color) into the component terminal and adjust B for white balance and GAIN for G until the chromaticity (x80, y80) is at the standard value.
(x80, y80) = (0.313 ±0.002, 0.329 ±0.002)
Continue adjusting 80 IRE and 20 IRE until they reach standard values.
If the BIAS value for B falls below 90, redo the adjustments using G and R. Save the adjusted values.
CUSTOM
Set Gain and Bias for CUSTOM 1 to 3 to the following values.
CUSTOM 1: Copy the Gain and Bias values for HIGH and make the Gain values for R/G/B ±20.
CUSTOM 2: Copy the Gain and Bias values for MIDDLE and make the Gain values for R/G/B ±0.
CUSTOM 3: Copy the Gain and Bias values for LOW and make the Gain values for R/G/B ±0.
Save the set values
Switch the Advanced Iris between “AUTO1” and “MANUAL”, and adjust each setting.
However, for the “AUTO” adjustment, if the Bias value for B falls below 82, redo the adjustment using G and R. There are 3 types of adjustment data for color temperature and 3 types for Advanced Iris, for a total of 9 types.
Computer
Set Input-A to “Computer”.
Input WXGA 80 IRE flat field (RGB 3 color) into Input-A. Copy the adjustment value from “Component” to each GAIN and each BIAS for RGB.
Save the set values.