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Sharp XV Z90U, Sharp DT 200 DLP theatre projector circuit diagram, how to enter the service mode, exploded view

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 This SHARP projector uses a DMD chip. This very sophisticated chip contains 480,000 pixels. As with any high technology electronic equipment such as large screen TVs, video systems and video cameras, there are certain acceptable tolerances that the equipment must conform to.  This unit has some inactive pixels within acceptable tolerances which may result in inactive dots on the picture screen. This will not affect the picture quality or the life expectancy of the unit.

RESETTING THE TOTAL LAMP TIMER

You need to reset the lamp timer every time you replace the lamp and confirm it is reset on the “Lamp Timer” menu.

How to reset the total lamp timer.

• The warning lights on the projector indicate problems inside the projector.

• There are two types of warning lights: a TEMPERATURE WARNING indicator that warns you when the projector is too hot, and a LAMP REPLACEMENT indicator that warns you when to change the lamp.

• If a problem occurs, either the TEMPERATURE WARNING indicator or the LAMP REPLACEMENT indicator will illuminate in red. After turning off the power, follow the procedures given below.

• If the TEMPERATURE WARNING indicator lights up, follow the above possible solutions and then wait until the projector has cooled down completely before turning the power back on. (At least 5 minutes.)

• If the power is turned off and then turned on again, for example during a brief rest, the may be triggered, preventing the power from going on. Should this occur, unplug the power cord from the wall outlet and plug it back in again.

Entering the adjustment process mode

There are following two methods.

Press the SW2002 on the MAIN PWB.

Press the following keys in this order.

ADJ UP > ADJ UP > ADJ DOWN > ADJ DOWN> ADJ RIGHT > ADJ LEFT > ENTER.


Adjustment mode process menu

Main unit schematic








Formatter schematic







Power unit schematic

Cabinet and mechanical part exploded view

Product type Theatre Projector

Model XV-Z90U/DT-200

Video system PAL/PAL 60/PAL-M/PAL-N/SECAM/NTSC 3.58/NTSC 4.43/DTV 480i/480P/720P/1080i

Display method DLP chip, RGB optical shutter method

DLP panel Panel size: 0.55” (140mm)

Display method: Single Panel Digital Micro mirror Device (DMD™) by Texas Instruments

Drive method: Digital Light Processing (DLP)

No. of dots: 480,000 dots (800 [H] x 600 [V])

Lens 1–1.2 x zoom lens, F1.75–2.04, f=28–33.5 mm (XV-Z90U) F2–2.4, f=16.9–20.2 mm (DT-200)

Projection lamp 150 W SHP lamp

Horizontal resolution 520 TV lines (NTSC 3.58 input)

RGB input signal 15-PIN MINI D-SUB CONNECTOR (INPUT 2):

RGB separate/composite sync/sync on green type analogue input: 0–0.7 Vp-p, positive,75 Ω terminated

HORIZONTAL SYNC. SIGNAL: TTL level (positive/negative) or composite sync (Apple only)

VERTICAL SYNC. SIGNAL: Same as above

Pixel clock 12–110 MHz

Vertical frequency 43–75 Hz

Horizontal frequency 15–70 kHz

Computer control signal 9-pin D-sub connector (RS-232C Port)

Rated voltage AC 100–240 V

Input current 3.6 A

Rated frequency 50/60 Hz

Power consumption 200 W



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