Zenith Z44SZ80 Series Service Manual page 11

DMD Manual
NG
Lens Adjustment(X & Y)
Manual
NG
DMD Adjustment(X & Y & Tilt)
DMD Manual
NG
<Fig. 4> Automatic Adjustment Sequence
(3) After adjusting the illuminator, adjust the focus by using
the focus adjustment screw on the projection lens. After
adjusting, fasten the screw tighty and secure with sealer.
<Fig. 5> HD3/HD4 Optical Engine Projection Lens
[ Note: The focus check point is not the screen center but the
upper/lower portion of the screen.
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ADJUSTMENT INSTRUCTIONS
Start
DMD/Lens Chucking
Screw Fwd/Bwd
Check Focus
DMD Adjustment(Tilt)
Check DMD
Check Lens
Tighten Lens Screw .
Check Lens
Restart
Lens Chuck Open
Check DMD
Tighten DMD Screw.
Restart
Check DMD
DMD Chuck Back
End
Inject the resilock
Ancor Screw
[ Pattern for focus adjustment
<Fig. 6> Focus Pattern(Cross Hatch)
(1) Enter the Cross Hatch using (CH + (
(Pattern Sequence: Cross Hatch --> Red --> Black -->
White --> Gray --> Blue --> White Balance)
(2) Focus adjustment Knob is variable and adjust the Focus.
(3) Adjust/check the Focus as follows.
1) Focus: Center Best
2) Flare: 1.5pixel below(Engine)
(4) After adjusting, tighten the adjustment Knob.
5. Caution for DMD
(Digital Micro-mirror Device)
5-1. Caution for DMD ESD
(1) Use a grounding strap to prevent ESD (Electrostatic
Dischage) damage when handing the DMD.
(2) Connect the grounding strap to a ground point on the
workbench.
(3) Keep the DMD in an ESD Safe container when not being
used or in transit.
(4) Wearing gloves will help prevent ESD damage and help
preserve the physical condition of the DMD.
(5) All work should be performed in a static free environment.
(6) Use caution and remove any dust particles on the DMD
front glass or back pins/pads.
5-2. Caution for DMD Cleaning
(1) Use caution to prevent scratches to the DMD glass.
(2) When DMD glass stains with dust, polish the front and
back DMD glass with soft cloth. Then, rotate the DMD 180
degrees and polish again.
(3) Do not use pressure when cleaning the DMD. The static
electricity and pollution can damage the DMD.
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