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Since the lamp reaches a very high temperature during units operation replacement of the
lamp should be done at least one hour after the power has been turned off. (To allow the
lamp to cool off.)
Installing the new lamp, make sure not to touch the lamp (bulb) replace the lamp by holding
its reflector 2.
[Use original replacement only.]

DANGER! –– 

Never turn the power on without the lamp to avoid electric-shock or damage

of the devices since the stabiliser generates high voltages at its start.

Since small amounts of UV-Radiation are emitted from an opening between the duct cover
and the lamp housing, it is recommended to place the LENS CAP on the opening during
servicing to avoid eye and skin exposure.

1 Employing lead-free solder 
"Input, Output, R/C Receiver, Key and Fan PWB" of this model employs lead-free solder. The
LF symbol indicates lead-free solder, and is attached on the PWBs and service manuals. The
alphabetical character following LF shows the type of lead-free solder.

Example: 

 Indicates lead-free solder of tin, silver and copper.

2 Using lead-free wire solder
When fixing the PWB soldered with the lead-free solder, apply lead-free wire solder.
Repairing with conventional lead wire solder may cause damage or accident due to cracks.
As the melting point of lead-free solder (Sn-Ag-Cu) is higher than the lead wire solder by
40°C, we recommend you to use a dedicated soldering bit, if you are not familiar with how to
obtain lead-free wire solder or soldening bit, contact our service station or service ranch in
your area.

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3 Soldering
As the melting point of lead-free solder (Sn-Ag-Cu) is about 220°C which is higher than the
conventional lead solder by 40°C, and as it has poor solder wettabillty, you may be apt to
keep the soldering bit in contact with the PWB for extended period of time. However, Since
the land may be peeled off or the maximum heat-resistance temperature of parts may be
exceeded, remove the bit from the PWB as soon as you confirm the steady soldering
condition.
Lead-free solder contains more tin, and the end of the soldering bit may be easily corroded.
Make sure to turn on and off the power of the bit as required.
If a different type of solder stays on the tip of the soldering bit, it is alloyed with lead-free
solder. Clean the bit after every use of it.
When the tip of the soldering bit is blackened during use, file it with steel wool or fine
sandpaper.
Be careful when replacing parts with polarity indication on the PWB silk.

ZHNDAi123250E

φ0.3mm 250g(1roll)

ZHNDAi126500E

φ0.6mm 500g(1roll)

ZHNDAi12801KE

φ1.0mm 1kg(1roll)

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Pixel Failures
Test Conditions

Room light:

10-Lux max.

Input signal:

Bright spot – black pattern
Black spot – white pattern or R, G, B

Settings:

Factory defaults

Lens:

40 inches (102cm) in maximum zoom-in.

Focus:

Best position

Monitoring distance:

3.0m

This specification is in accordance with the product specification.

Allowable quantity of defective pixels on screen:

1. Bright Spot

Pixel Type

Red

Green

Blue

Brightness Rate

More than 15%

More than 15%

More than 15%

Quantity of pixels

5

5

5

2. Black Spot

Pixel Type

Red

Green

Blue

Zone A

1

1

2

Zone B

5

5

5

Allowable quantity of dust on screen

Red

Green

Blue

Dust Dot

6

4

8

For details on “Zone A” and “Zone B”, please contact the approved service contractor or e-
mail 

projectorsupport@sharp-uk.co.uk

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