Sanyo PLC-XU45 service manual Optical Adjustments, Contrast adjustment, B-CONTRAST Adjustment

■Optical Adjustments

Before taking optical adjustments below, remove the Cabinet Top and Main Board following to the “Mechanical Disassemblies”

Adjustments require a 2.0mm hex wrench and a slot screwdriver. When you adjust Condenser lens, Condenser lens-out or Relay lens adjustment, you need to disconnect some connectors and FPC cables of LCD panels on the main board.

Note: Do not disconnect connectors K8N, K8P, K8H, K8R and K8S on the main board, because the projector can not turn on due to operate the power failure protection.

Contrast adjustment

[Before Adjustment]

- Input a 100% of black raster signal.

[R/G/B-CONTRAST ADJUSTMENT]

1 Loosen a screw A (Fig.1-1/1-2) on the polarized glass mounting base which you intend to adjust.

2 Turn the polarized glass mounting base as shown in Fig.1-1to obtain the darkest brightness on the screen.

3 Tighten the screw A to fix the polarized glass mounting base.

Repeat steps 1 to 3 for remaining polarized glasses.

A

Slot B

Polarized glass mounting base

Fig.1-1

Main Board	R-Polarized Glass
	Mounting Base

A

A

B-Polarized Glass

Mounting Base

A G-Polarized Glass

Mounting Base

Fig.1-2

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