White Balance Adjustment; Input A Color Temperature: High; Input A Color Temperature: Middle - Sony VPL-FH30 Service Manual

2-5. White Balance Adjustment

Preparation before adjustment
1. Input the XGA 60 Hz 100% fl at fi eld signal to the INPUT A connector and allow the warm-up of 10
minutes aging at a minimum.
2. Enter the Service Mode. (Refer to Section 2-3-2.)
3. Enter the menu: Function → Lamp Mode and set it to Standard.
4. Input the 10step computer signal to the INPUT A, then perform the visual check the chromaticity of
each step.
5. When the chromaticity varies widely, perform the adjustment below.
n Perform the white balance adjustment in sequence.

2-5-1. INPUT A Color Temperature: High

1. Enter the service mode. (Refer to Section 2-3-2.)
2. Select the menus: Device → W/B → High.
3. Input the 80% fl at fi eld computer signal to the INPUT A.
4. Adjust the GAIN R, GAIN B, and GAIN G until the target chromaticity.
Target chromaticity (x, y): 0.284, 0.298
5. Change the input signal to the 30% fl at fi eld computer signal.
6. Adjust the BIAS R, BIAS B, and BIAS G until the target chromaticity.
Target chromaticity (x, y): 0.284, 0.298
7. Repeat steps 3 to 6 until the chromaticity (x ?0.002, y ?0.002) with reference to the target chromaticity (x, y).
8. Select the menus: Device → Save To Memory, then select [Yes] and press [ENTER].

2-5-2. INPUT A Color Temperature: Middle

1. Select the menus in service mode: Device → W/B → Middle.
2. Input the 80% fl at fi eld computer signal to the INPUT A.
3. Adjust the GAIN R, GAIN B, and GAIN G until the target chromaticity.
Target chromaticity (x, y): 0.292, 0.310
4. Change the input signal to the 30% fl at fi eld computer signal.
5. Adjust the BIAS R, BIAS B, and BIAS G until the target chromaticity.
Target chromaticity (x, y): 0.292, 0.310
6. Repeat steps 2 to 5 until the chromaticity (x ?0.002, y ?0.002) with reference to the target chromaticity (x, y).
7. Select the menus: Device → Save To Memory, then select [Yes] and press [ENTER].
2-4 (E)
VPL-FH30