Friday, May 27, 2016

Sony LCD DATA PROJECTOR - Sony - VPL-CS10 - VPL-CX10 – How to enter to factory mode – How to adjust the VCOM – White balance adjustment – Projector repair and service

Electrical Adjustments

Equipment Required
Oscilloscope :Tektronix 2465 or equivalent (bandwidth: 350 MHz or more)
NTSC, PAL, SECAM component signal generator :Tektronix TG2000 + AVG1 (optional module) + AWVG1 (optional module) or equivalent
VG (Programmable video signal generator): VG814 or equivalent
Digital voltmeter :Advantest TR6845 or equivalent
Luminance meter
Note : Perform the following adjustments at least 5 minutes after turning on the power.
Factory Mode Setting(Service mode)
1. Make sure that the STATUS in the menu is ON.
2. Exit the menu.
3. Press the keys in the following ORDER: “ENTER” > “ENTER” > “LEFT” > “ENTER”
4. The message “Do you wish to enter into the FACTORY MODE?” will be displayed.
5. Select YES.
V-COM Adjustment
1. Input the green-only 1H inverted signal to INPUT-A.
2. Set the CONTRAST to 50 and BRIGHT to 50.
3. Set the screen to G VCOM adjustment of “Device Adjust.”
Adjust the G VCOM so that the flicker on the screen is the minimum.
4. Input the red-only and blue-only 1H inverted signal respectively and adjust R VCOM and B VCOM respectively so that the flicker becomes minimum.
5. Store the adjustment value in the memory.
6. Select the projection of vertically reversed from the front [CEIL. FRT] using the menu screen.
7. Enter the G VCOM adjustment screen of the [Device Adjust]. Adjust VPL-CS10 for the minimum flicker point. Adjust VPL-CX10 for the same value as step 3.
8. Connect the 1H-inverted single color signal of red then blue to the input connector. Adjust VPL-CS10 for the minimum flicker point and adjust VPL-CX10 for the same value as step 4 using the R VCOM and B VCOM respectively.
9. Store the adjustment value in the memory.
White Balance Adjustment on Servicing
Signal Level Adjustment
1. Warm up the unit at least 10 minutes.
2. Connect the 2-step signal that consists of 95 IRE and 100 IRE amplitude, to the INPUT-A connector.
3. Set the unit in G-only mode.
4. Enter the P.DRV on the MENU screen by the DEV. ADJ.
5. Discriminate the 95 IRE and 100 IRE by the V-AMP/ CONT controls of the P.DRV.
6. Set the unit in R-only mode.
7. Discriminate the 95 IRE and 100 IRE by the V-AMP/ SUB CONT R controls of the P.DRV.
8. Set the unit in B-only mode.
9. Discriminate the 95 IRE and 100 IRE by the V-AMP/ SUB CONT B controls of the P.DRV.
White Balance Adjustment
HIGH Mode of INPUT-A
Input the 10 STEP signal to INPUT-A, and observe the chromaticity of each luminance.
When varying the chromaticity of each luminance, perform the following adjustments.
1. Input the 100 IRE FLAT FIELD signal to INPUT-A.
2. Measure the chromaticity (x, y).
3. Input the 50 IRE FLAT FIELD signal to INPUT-A.
4. Adjust the chromaticity (x, y) to the values measured in step 2 by the V-AMP/SUB CONT R and B of the P. DRV.
LOW Mode of INPUT-A
1. Input the 50 IRE FLAT FIELD signal to INPUT-A.
2. Select BIAS 123 using the LOW mode of W/B.
3. Adjust GAIN G so that chromacity becomes 0.322 ± 0.003.
LOW Mode of VIDEO
1. Input the 50 IRE 15k COMPONENT FLAT FIELD signal to INPUT-A.
2. Select BIAS 123 using the LOW mode of W/B.
3. Adjust GAIN G so that chromacity becomes 0.322 ± 0.003.
After Replacing the Prism Block
1. Perform V-COM Adjustment.”
2. Perform. White Balance Adjustment on Servicing.”
When Replacing the BA Board
When the data before replacement can be read properly
1. Make a not of the data before replacement. After replacement, write the data into the new board with service mode.
2. If the white balance is extremely deteriorated, perform the white balance adjustment .
When the data before replacement cannot be read
1. Perform V-COM Adjustment.”
2. Perform White Balance Adjustment on Servicing.”
When Replacing the C Board
1. Perform V-COM Adjustment.”
2. Perform White Balance Adjustment on Servicing.”
When Replacing the Other Board
There are no need to perform the adjustment.