DOWNLOAD Sharp XR-20S Service Manual ↓ Size: 1.16 MB | Pages: 42 in PDF or view online for FREE

Model
XR-20S
Pages
42
Size
1.16 MB
Type
PDF
Document
Handy Guide
Brand
Device
Projector / Version 1.1
File
xr-20s.pdf
Date

Sharp XR-20S Handy Guide ▷ View online

Product Dimensions
Version 1.1
Issue 04/2006
25
SHARP ELECTRONICS (UK) LTD
PROJECTOR TECHNICAL SUPPORT
TECHNICAL SERVICES GROUP
Dimensions 
Product Dimensions
Version 1.1
Issue 04/2006
26
SHARP ELECTRONICS (UK) LTD
PROJECTOR TECHNICAL SUPPORT
TECHNICAL SERVICES GROUP
Dimensions
Optical Layout
Version 1.1
Issue 04/2006
27
SHARP ELECTRONICS (UK) LTD
PROJECTOR TECHNICAL SUPPORT
TECHNICAL SERVICES GROUP
THE OPTICAL UNIT OUTLINE
Item
Function
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.
Electrical Adjustments
Version 1.1
Issue 04/2006
28
SHARP ELECTRONICS (UK) LTD
PROJECTOR TECHNICAL SUPPORT
TECHNICAL SERVICES GROUP
ELECTRICAL ADJUSTMENT
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 S2551 to call the process mode and
execute "SS2" on SS menu.
2
Adjustment of CW index
1. Signal input: Send 256 STEP color
bar.
XGA series (XGA60HZ),
SVGA series (SVGA60HZ)
2. Select the following group and
subject.
Group: ADJUST
CW/Auto KS
Subject: CW-INDEX.
1. Feed the signal to input 1.
2. Select the adjustment item and adjust the
lamp gradation patterns of RGBW so that
smooth patterns without noise appear.
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 : 3
P-Tint : 3
S-Tint : 3
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 : 7
P-Color : 7
S-Color : 7
7
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.
2. Select the following group and 
1. Check the fixed value.
R-Bright: 63
2. Observe the chroma of 91% white window
pattern with CA100.
3. Increase the R-Contrast value on the 
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