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3.1.2 Screen Size and Installation Distance 

The distance between the main unit and the screen is proportional to the image size. The closer the main unit is to the screen, the smaller the 

image size will be; vice versa. The following is a brief description of the relationship between screen size and installation distance, with the desktop 
front projection as an example. Please refer to the following data to determine the approximate installation distance. 

 

 
 
 
 
 
 

 

 

 
 
 
 
 
 
 

 

 

Screen size and installation distance(For Reference only)          Unit: mm   

Screen 

Size 

Width of 

Display Area 

Height of 

Display Area 

Projection 

distance

 

Height from main unit 

to screen

 

80'' 

1771 

996 

47 

199 

90'' 

1992 

1121 

93 

230 

100'' 

2214 

1245 

140 

261 

 

Prompt Information 

 

” in Fig. 14 is the distance 

between the back end of the 
main unit and the screen 

 

"

" in Fig. 14 is the height of the top of 

the main unit relative to the bottom of the 
screen 

 

It is suggested that the viewing 
distance should be more than 
1.5 times of the diagonal length 
of the screen. Long-term close 
watching of the screen may 
affect vision 

 

The above data are for users' reference 
only. Please be noted that there may be 
deviations in actual use 

Fig. 14 Installation distance

 

Summary of Contents for A5U

Page 1: ...East Road High tech Zone Mianyang Sichuan China Changhong Laser Display laser changhong com Changhong Official Website www changhong com Laser Theater F o r H o m e I n s t a l l a t i o n Please read carefully before using J U N 0 0 1 8 2 6 1 3 V 1 0 ...

Page 2: ...Information Please note that product accessories may be increased or decreased due to product upgrades the appearance of remote control shall be subject to the real object Due to differences in product application in each country region the product accessories may vary in some countries regions Main unit 1 Product user manual 1 Remote 1 Speaker 1 pair with cable HDMI cable 1 Power cord 1 Lifting s...

Page 3: ...ble Picture 100 Built in speakers 5W 1 Method of Remote Bluetooth Implementation standard Q20541230 8 154 2019 Power AC 100 240V 2 8A 50 60Hz Body size approx Φ480 171 5 mm Net weight of main unit 9 3 kg Temperature 0 35 Run Relative humidity 20 80 Temperature 20 50 Port VGA 1 VGA AUDIO IN 1 COAX 1 AUDIO OUT 1 EXT SPEAKER R L USB 2 SERVICE 1 HDMI 2 LAN 1 Environment Storage Relative humidity 20 80...

Page 4: ...wer button and indicator Infrared protective sensor Receiving hole for far field voice Light emitting hole Kickstand for height adjusting Kickstand for height adjusting Ventilation mesh Side port Kickstand for height adjusting Power input Anti theft lock hole Rear port Fig 1 Front Fig 2 Top Fig 3 Right Fig 4 Rear ...

Page 5: ...tion with USB devices such as flash disk mobile hard disk drive etc USB 2 0 For connection with USB devices such as flash disk mobile hard disk drive etc HDMI2 2 0 For connection with external devices ARC with HDMI ports HDMI1 2 0 For connection with external devices with HDMI ports LAN For wired network connections SERVICE For factory commissioning tooling only do not insert any signal wires As t...

Page 6: ...ght When the media plays without menu the function defined by the system is executed Return key Return to the previous menu Volume key Volume up Reserved key Function not defined Volume Volume down Program key Open the selection menu of program OK key Enter the page of selection Menu key Short press this key to open the setting menu in program and local media under any scene long press this key to...

Page 7: ...nit press the Menu key and Volume key at the same time and hold for more than three seconds c Remote control indicator will flash quickly and the remote control will enter the matching mode d When the remote control indicator lights up for long and the screen will display as Fig 7 loosen the keys and wait for connection e The indicator of remoter control will go out and the tip of Match succeed is...

Page 8: ...ection desktop back projection lifting front projection and lifting back projection 3 1 1 Installation Method The display mode front desktop rear lifting front lifting and rear desktop needs to be changed and set from the OSD menu due to different applications Fig 10 Desktop Front Projection Fig 11 Desktop Rear Projection Fig 12 Lifting Front Fig 13 Lifting Rear ...

Page 9: ...stance For Reference only Unit mm Screen Size Width of Display Area Height of Display Area Projection distance Height from main unit to screen 80 1771 996 47 199 90 1992 1121 93 230 100 2214 1245 140 261 Prompt Information in Fig 14 is the distance between the back end of the main unit and the screen in Fig 14 is the height of the top of the main unit relative to the bottom of the screen It is sug...

Page 10: ...rrow press the OK key time after time to adjust the image definition into the optimum d In case the definition still cannot reach the ideal status it is required to repeat the step b and c 3 2 2 Focus Adjustment a Call up the electric focusing screen through the user menu long press the Menu key of the remote control select Display Setting select the Electric Focusing b Use Up arrow and Down arrow...

Page 11: ...n the Settings and All Settings menus d After completing the required operations press the return key to return to the previous menu interface step by step or press the Menu key to exit the menu directly 4 Operating Instructions 4 1 Basic Settings Menu 4 2 System Home Page Prompt Information Some options in the user s operation interface are not selectable displayed or hidden automatically in diff...

Page 12: ...open or disassemble the machine which may cause damage due to exposure to laser radiation Do not use some optical instruments such as magnifying glass and microscope for experiments to observe the laser output otherwise eye injury may be caused Wear professional laser protection glasses when there is a need to have direct contact with bright light Appropriate instructions for assembly operation an...

Page 13: ...ight beam for a long time Do not place the machine directly in areas with poor ventilation such as carpets cushions bookshelves or closets To facilitate ventilation please ensure that the distance between the ventilation opening of the machine and the wall is greater than 30cm Do not place flammable spray or other flammable substances beside this machine If there is a gas leak please do not touch ...

Page 14: ...mental protection service life of the product is 10 years under normal working and using conditions and the product can be used safely within the environmental protection service life In order to protect the environment used batteries and products can be recycled by regular dealers or manufacturers Please do not discard them at will ...

Page 15: ... invoice unless the product can be proved that it is within the validity period e Altering the warranty card without authorization f The product model or number of the warranty card does not conform to the actual goods In case of any changes in the list above the newly formulated relevant regulations of the company or the relevant laws and regulations updated by the country region shall prevail Pl...

Page 16: ...earance of the machine and the electrical performance are in good condition after installation normal abnormal User Satisfaction Survey Satisfied Not Satisfied User signature Authorized Dealer Information User name Tel Address Machine model Shopping mall Invoicing date Invoice No Body barcode Service Status Screen Installation and Commissioning Mount Installation and Commissioning Separate Onsite ...

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