Wednesday, June 01, 2016

Sony VPL-CX70 - VPL-CX75 – How to enter to service mode – How to adjust VCOM and White balance – Automatic focus adjustments – Projector repair and service

How to Enter the Factory Mode

1. Confirm that the MENU can be displayed.
2. Close the MENU.
3. Press the keys in the following order : [ENTER] >  [ENTER] > [LEFT ARROW] > [ENTER].
The message [Do you want to enter the Factory Mode?
Yes : UP No : DOWN] appears.
Select [Yes :UP ].
[Supplementary information: How to Exit the Factory Mode]
Perform the step 3 KEY operation.
The message [Do you want to return to the User Mode?
Yes : UP No : DOWN] appears.
Select [Yes : UP ]
V COM Adjustment
1. Connect the VG to the INPUT-A connector. Connect the FLAT FIELD 100 IRE signal to the input connector. Leave this unit with POWER ON for 10 minutes or longer for aging.
2. Enter the Factory Mode. Enter the Device Adjust MENU, and then enter the Panel Drive Adjustment MENU.
3. Connect the XGA, R-single color, 30 IRE, single-line ON/OFF signal to the input connector.
4. Enter the P. DRV Adjustment MENU, and then enter the VCOM R Adjustment screen.
5. Adjust the VCOM R value for minimum flicker.
6. Change the input signal to the XGA, G-single color, 30 IRE, single-line ON/OFF signal, and connect it to the input connector.
7. Enter the P. DRV Adjustment MENU, and then enter the VCOM G Adjustment screen.
8. Adjust the VCOM G value for minimum flicker.
9. Change the input signal to the XGA, B-single color, 50 IRE, single-line ON/OFF signal, and connect it to the input connector.
10. Enter the P. DRV Adjustment MENU, and then enter the VCOM B Adjustment screen.
11. Adjust the VCOM B value for minimum flicker.
12. Store the adjustment value in the memory.
13. Turn over the “Image flip” up side down and repeat the steps from 2 through 12.
White Balance Adjustment
Preparation before adjustment
1. Input the 100 IRE XGA flat field signal to the INPUTA connector and allow the warm-up of 10 minutes aging at a minimum.
2. Enter the Service Mode.
HIGH Mode of INPUT-A
Input the XGA 10 STEP signal to the INPUT-A connector, and see the chromaticity of each tone.
If the chromaticity of each mode deviates, perform the following adjustment.
Before adjusting each mode, confirm that CONTRAST is 80, BRIGHT is 50, GAIN of R.G.B is 152, and BIAS is 127.
Select Computer for the Input-A signal type.
1. Input the 100 IRE XGA flat field signal to the INPUTA connector.
2. Measure the chromaticity (x, y). Set CONTRAST and BRIGHT to MAX only during this measurement. After the adjustment is completed, set CONTRAST to 80, and BRIGHT to 50.
3. Input the 80 IRE XGA flat field signal to the INPUTA connector.
4. Adjust the chromaticity (x, y) to the one set in step 2 by GAIN R and GAIN B of the HIGH mode of W/B.
5. Input the 30 IRE XGA flat field signal to the INPUTA connector.
6. Adjust the chromaticity (x, y) to the one set in step 2 by GAIN R and GAIN B of the HIGH mode of W/B.
7. Repeat steps 3 to 6 above until the chromaticity (x ±0.002, y ±0.003) with reference to the chromaticity that is measured at step 2 is obtained.
8. Press the MEMORY key and save the adjustment value.
LOW Mode of INPUT-A
1. The target chromaticity of the adjustment is (0.327, 0.362).
2. Input the 80 IRE XGA flat field signal to the INPUTA connector.
3. Adjust the GAIN R and GAIN B in the LOW mode of W/B until the chromaticity (x, y) that is measured at step 1 is obtained.
4. Input the 30 IRE XGA flat field signal to the INPUTA connector.
5. Adjust the GAIN R and GAIN B in the LOW mode of W/B until the chromaticity (x, y) that is measured at step 1 is obtained.
6. Repeat steps 2 to 5 above until the chromaticity (x ±0.002, y ±0.003) with reference to the chromaticity that is measured at step 1 is obtained.
7. Press the MEMORY key and save the adjustment value.
HIGH Mode of VIDEO
Set Component for the input A signal type.
1. The target chromaticity of the adjustment is (0.293, 0.295).
2. Input the 80 IRE Component flat field signal to the INPUT-A connector.
3. Adjust the GAIN R and GAIN B in the LOW mode of W/B until the chromaticity (x, y) that is measured at step 1 is obtained.
4. Input the 30 IRE Component flat field signal to the INPUT-A connector.
5. Adjust the GAIN R and GAIN B in the HIGH mode of W/B until the chromaticity (x, y) that is measured at step 1 is obtained.
6. Repeat steps 2 to 5 above until the chromaticity (x ±0.002, y ±0.003) with reference to the chromaticity that is measured at step 1 is obtained.
7. Press the MEMORY key and save the adjustment value.
LOW Mode of VIDEO
1. The target chromaticity of the adjustment is (0.300, 0.310).
2. Input the 80 IRE Component flat field signal to the INPUT-A connector.
3. Adjust the GAIN R and GAIN B in the LOW mode of W/B until the chromaticity (x, y) that is measured at step 1 is obtained.
4. Input the 30 IRE Component flat field signal to the INPUT-A connector.
5. Adjust the GAIN R and GAIN B in the HIGH mode of W/B until the chromaticity (x, y) that is measured at step 1 is obtained.
6. Repeat steps 2 to 5 above until the chromaticity (x ±0.002, y ±0.003) with reference to the chromaticity that is measured at step 1 is obtained.
7. Press the MEMORY key and save the adjustment value.
Automatic Focus (AF) Adjustment
Turn on the cooling fan and the lamp.
Set Tilt to 0, Side shot 0, and Keystone correction MANUAL.
1) Wide end adjustment
Set the zoom position to the wide end, and then set the screen size to 60”. (Bring the unit to the front projection.)
1. On “MENU”, select “INSTALL SETTING”, and set “Test Pattern” to “ON”.
2. Adjust the focus to the optimum position while observing the test pattern at the center of the projected image. (If “Test Pattern” is set to “ON” in step 1, a cross-shaped test pattern appears when the Focus key is pressed.)
3. Press the AF adjustment switch (1) in the following figure and hold it for about two seconds. (When the holding action is recognized, the focus starts functioning automatically.)
Note:
While holding down the key, ensure that no object that may interrupt the projected image exists in front of the AF module (2) , or between the VPL-CX75 and the screen.
2) Tele end adjustment
After completing the above adjustment, set the zoom position to the tele end at the same position.
Then, repeat the adjustment steps 1 through 3 described above.
3) Check
At both the wide end and the tele end, blur the focus by using the Focus key. Then activate AF, and check that the focus is correctly adjusted.