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3

There are special components used in this equipment which are important for safety. These parts are marked by 7 in the schematic 

diagram, circuit board diagrams, exploded views and replacement parts list. It is essential that these critical parts should be replaced 

with manufacturer’s specified parts to prevent shock, fire, or other hazards. Do not modify the original design without permission of 

manufacturer.

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. 

These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a

commercial environment.

This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the

instruction manual, may cause harmful interference to radio communications.

Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to

correct the interference at his own expense.

Any unauthorized changes or modifications to this equipment will void the user’s authority to operate this device.

 

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Before using the projector, remove the dust sponge from the mounting portion of the projection lens and store it 

for the future use. When transporting the projector, remove the projection lens before attaching the dust sponge. 

Otherwise dust will accumulate inside and may cause malfunctions.

 

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Transport the projector with 2 or more people. Failure to do so may drop the projector, which may result in 

damage or deformation of the projector, or injury.

 

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When transporting the projector, hold it securely by its bottom and avoid excessive vibration and impacts. They 

may damage the internal components and result in malfunctions.

 

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Do not transport the projector with the adjustable feet extended. Doing so may damage the adjustable feet.

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The projector is designed for indoor use only.

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f

Places where vibration and impacts occur such as in a car or vehicle: Doing so may cause damage to internal 

components or malfunction.

 

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Location close to sea or where corrosive gas may occur: The projector may fall due to corrosion. Also, failure to 

do so may shorten the life of the components and result in malfunctions.

 

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cases due to the heated air from the air exhaust port or the hot or cooled air. Make sure that the exhaust 

from the projector or other equipment, or the air from the air conditioner does not blow toward the front of the 

projector.

 

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the light source, or result in deformation of the projector due to heat, which may cause malfunctions.
Follow the operating environment temperature of the projector.

 

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Near high-voltage power lines or near motors: Doing so may interfere with the operation of the projector.

 

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Places where there is high-power laser equipment: Directing a laser beam onto the projection lens surface 

causes damage to the DLP chips.

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The optional Ceiling Mount Bracket is required.
Model No.: ET-PKD520H (for High Ceilings), ET-PKD520S (for Low Ceilings), ET-PKD520B (Projector Mount 

Bracket)

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Image and sound may be disrupted if cable transmission characteristics cannot be obtained due to inadequate 

installation.

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Using the projector in a location that the altitude is too high or the ambient temperature is too high may reduce the 

life of the components or result in malfunctions.
The upper limit of the operating environment temperature differs depending on the altitude or the [OPERATING 

MODE] setting in the [PROJECTOR SETUP] menu → [OPERATION SETTING]   

 

Altitude of 0 m (0') or higher 

to lower than 1 400 m 

(4 593')

0 °C (32 °F) to 45 °C (113 °F)

0 °C (32 °F) to 40 °C (104 °F)

Altitude of 1 400 m (4 593') 

or higher to lower than 

2 700 m (8 858')

0 °C (32 °F) to 40 °C (104 °F)

Altitude of 2 700 m (8 858') 

or higher to lower than 

4 200 m (13 780')

The projector cannot be used.

When the Smoke Cut Filter is used, the operating environment temperature should be between 0 °C (32 °F) and 

35 °C (95 °F) regardless of the [OPERATING MODE] setting. It cannot be used at an altitude of 1 400 m (4 593') 

or higher above sea level.

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360°

360°

360°

360° vertically

360° horizontally

360° tilted

(combination of vertical and horizontal)

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purposes may damage the projector.

 

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The adjustable feet can be removed if not needed in the installation. However, do not use the screw holes 

holes of the adjustable feet. Failure to do so may cause damage to the projector.

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If there is any facility or equipment which outputs strong radio waves near the installation location, install the 

, wrap the LAN cable connected to the 

<DIGITAL LINK/LAN> terminal using a piece of metal foil or a metal pipe which is grounded at both ends.

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The high clarity projection lens is thermally affected by the light from the light source, making the focus unstable in 

the period just after switching on the power. It is recommended that images be projected continuously for at least 

30 minutes before the focus is adjusted.

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1. Safety Precautions
2. Specifications

1. The name of each part
2. Menu Navigation
3. Service Mode
4. Notes on service
5. Troubleshooting

1. Parts Locations
2. Disassembly Instructions

1. Adjustment item and a procedure
2. Software Update Procedure

1. Block Diagram
2.   Interconnection Block Diagram
3. Schematic Diagram
4. Circuit Boards Diagram

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  - For continued safety, no modification of any circuit must be attempted.

  - Unplug the power cord from the power outlet before disassembling this projector.

  - Use correctly the supplied power cord and must ground it.

  - It is advisable to use an isolation transformer in the AC power line before the service.

  -  Be careful not to touch the rotation part (cooling fan, etc.) of this projector when you service with the upper case removed 

and the power supply turned ON.

  -  Observe the original lead dress during the service. If a short circuit is found, replace all the parts overheated or damaged 

by the short circuit.

  -  After the service, all the protective devices such as insulation barriers, insulation papers, shields, and isolation R-C combi-

nations must be properly installed.

  - After the service, check the leakage current to prevent the customer from getting an electric shock.

  1. Prepare the measuring circuit as shown in Fig.1.

    Be sure to use a voltmeter having the performance described in Table 1.

  2. Assemble the circuit as shown in Fig. 2. Plug the power cord in a power outlet.

  3. Connect M1 to T1 according to Fig. 2 and measure the voltage.

  4. Change the connection of M1 from T1 to T2 and measure the voltage again.

  5.  The voltmeter must read 0.375 V or lower in both of steps 3 and 4. This means that the current must be 0.75mA or  less.

  6.  If the reading is out of the above standard, the projector must be repaired and rechecked before returning to the customer 

because of a possibility of an electric shock.

 

 

 

  

  

M1

M2

Rs

Cs

Rb

10KΩ ±0.1%

0.022µF

±1.0%

Vb

(V) V

Rs: 1500 Ω±0.1%

Cs: 0.22 µF±1.0%

Rb: 500 Ω±0.1%

to T1

or T2

in FIg.2

Weighted leakage current=Vb / 500 (A)

Fig. 1

Isolation transformer

T1

T2

connection

to power outlet

M1

M2

Fig.2

Projector

Measuring

Circuit (Fig.1)

Performance

Voltmeter

(rms reading)

Accurancy: 

≤ 2%

Input resistance: 

≥ 1 MΩ

Input capacitance:  ≤ 200 pF

Frequency range:  15 Hz to 1 MHz

Table. 2