DOWNLOAD Sharp XV-Z2000E Service Manual ↓ Size: 764.96 KB | Pages: 42 in PDF or view online for FREE

25

26

Lamp

Light source. DC-driven high-pressure mercury vapour lamp.

Colour wheel

Used to let the source light through the colour filter and to separate it into
R, G and B colours.

Rod

Used to make for uniform light beams.

Illumination lenses

Used to collect the light from the rod lens into the DMD chip.

Reflection mirror

Used to reflect the light from the relay lenses against the DMD chip.

Field lens

Focuses light from the reflection mirror on DMD and then the light from
DMD to the projection lens.

DMD chip

Turns the internal micromirror ON/OFF at the rate of colour component
of each dot of the input source to reflect light.

Projection lens

Enlarges light from DMD and projects it on a screen.

27

No.

Adjustment Items

Adjustment Conditions

Adjustment Procedures

1

Initialisation of EEPROM

1. Turn on the power (the lamp lights
up) and warm up the system for 15
minutes.

1. Make the following settings.
Press S2002 to call the process mode and
execute "SS2" on SS menu.

2

Adjustment of CW index

1. Signal input: 64-step colour bar
2. Select the following group and
subject.
Group: DLP
Subject: Select Index Delay

1. Adjust the lamp patterns of RGB so that
smooth patterns appear without colour blend
and noise.

3

RGB tone reproduction

1. Feed the SMPTE pattern signal.

1. Confirm that 100% and 95% white
gradation and 0% and 5% black gradation
are discernible.

4

Adjustment of video
brightness/contrast

1. Select the following group and
subject.
Group: VIDEO
Subject: Contrast / Bright

1. Check the fixed value.
Contrast : 4
Bright : 40

5

Adjustment of video tint

1. Feed the split colour bar signal.
2. Select the following group and
subject.
Group: VIDEO
Subject: N-TINT / P-TINT / S-TINT

1. Check the fixed value.
N-Tint : 0
P-Tint : 2
S-Tint : 2

6

Adjustment of video colour
saturation

1. Select the following group and
subject.
Group : VIDEO
Subject : N-Color / P-Color / S-Color

1. Check the fixed value.
N-Color : 8
P-Color : 8
S-Color : 8

7

R Bright / R Contrast
adjustment

1. Send white/black window pattern
signals with 91% (0.64 Vpp)/0% of
amplitude level of XGA 60Hz to input 

1. Check the fixed value.
R-Bright: 63
2. Observe the chroma of 91% white window

28

1.
2. Select the following group and
subjects.
Group : AD
Subject : R-Bright
(Process GAMMA interlock)

pattern with CA100.
3. Increase the R-Contrast value on the
screen with bit dropouts. Adjust the value to
+5 when bright red bit dropouts occur on the
black and the x value exceeds 5/1000.