BenQ ST750K Service Manual

ST750K/ST860K LCD Monitor User Manual

Disclaimer

BenQ Corporation makes no representations or warranties, either expressed or implied, with respect to the contents of this document. BenQ Corporation reserves the right to revise this publication and to make changes from time to time in the contents thereof without obligation to notify any person of such revision or changes.

Copyright 2018 BenQ Corporation. All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system or translated into any language or computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise, without the prior written permission of BenQ Corporation.

Table of Contents 3

Table of Contents

Safety warnings and precautions ...................................... 5

Important safety instructions............................................ 6

Notes on the LCD panel of this display..................................... 6

Safety notice for remote control................................................. 7

Battery safety notice....................................................................... 7

BenQ ecoFACTS.............................................................................. 8

Package contents ................................................................. 9

Setting up the display........................................................ 10

Mounting the display.................................................................... 10

Installing the display on a wall.................................................... 10

Parts of the display and their functions ........................ 12

Rear panel....................................................................................... 12

Input/output terminals................................................................. 14

Input/output terminals................................................................. 15

Remote control............................................................................. 17

Using the remote control........................................................... 19

Connection ......................................................................... 21

Connecting audio/video signals ................................................. 21

Connecting power........................................................................ 22

Basic operations................................................................. 24

Turning the display on or off ..................................................... 24

Switching input signals ................................................................. 26

Adjusting audio volume level ..................................................... 26

Setting up Internet connection.................................................. 26

Updating software ........................................................................ 27

The OSD (On-Screen Display) menu ........................... 28

OSD menu overview ................................................................... 28

Table of Contents4

Operations in the OSD menu.................................................... 29

Picture menu................................................................................ 30

Sound menu................................................................................. 32

Setting menu................................................................................ 34

Multimedia operation ....................................................... 36

Multimedia buttons on the remote control ........................... 36

Viewing files.................................................................................... 37

Working with Android OS.............................................. 47

About All Apps.............................................................................. 48

Browser ........................................................................................ 49

Settings......................................................................................... 50

X-Sign ............................................................................................ 51

BenQ Suggest ........................................................................... 52

ES File Explorer ....................................................................... 53

Multimedia................................................................................... 54

WPS Office.................................................................................. 55

Product information.......................................................... 57

Specifications.................................................................................. 57

Dimensions..................................................................................... 59

Supported input signal resolution ............................................. 61

Troubleshooting................................................................. 62

2/27/18

Safety warnings and precautions 5

Safety warnings and precautions

THIS EQUIPMENT MUST BE GROUNDED

To ensure safe operation, the three-pin plug must be inserted only into a standard three-pin power outlet which is effectively grounded through normal

The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.

The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance.

• The mains plug of the power supply cord shall remain readily operable. The AC receptacle (mains socket outlet) shall be installed near the equipment and shall be easily accessible. To completely disconnect this equipment from the AC mains, disconnect the power cord plug from the AC receptacle.

• Do not place this display on an uneven, sloping or unstable surface (such as a trolley) where it may fall and cause damage to itself or others.

• Do not place this display near water, like a spa or pool, or in a position which will allow the splashing or spraying of water onto the display, like in front of an open window where rain water may enter.

• Do not install this display in a confined space without proper ventilation and air circulation, such as in a closed cabinet. Allow proper space around the display for dissipating heat inside. Do not block any openings and vents on the display. Overheating may result in hazards and electric shock.

• Installation of this display should only be performed by a qualified technician. Failure to install this display properly may cause injuries and damages to the personnels and the display itself. Check the installation regularly and maintain the display periodically to ensure the best working condition.

• Use only the accessories approved or recommended by the manufacturer to mount this display. Using wrong or unsuitable accessories may cause the display to fall and result in serious personal injuries. Make sure that the surface and fixing points are strong enough to sustain the weight of the display.

• To reduce the risk of electric shock, do not remove covers. No user serviceable parts inside. Refer servicing to qualified service personnel.

• To prevent personal injuries, mounting the display or installing desktop stands is required before use.

household wiring. Extension cords used with the equipment must have three cores and be correctly wired to provide connection to the ground. Wrongly wired extension cords are a major cause of fatalities.

The fact that the equipment operates satisfactorily does not imply that the power outlet is grounded or that the installation is completely safe. For your safety, if you are in any doubt about the effective grounding of the power outlet, please consult a qualified electrician.

Important safety instructions6

Important safety instructions

1. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4. Follow all instructions.

5. Do not use this apparatus near water.

6. Clean only with dry cloth.

7. Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.

8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.

9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding-type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.

10. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.

11. Only use attachments/accessories specified by the manufacturer.

12. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.

13. Unplug this apparatus during lightning storms or when unused for long periods of time.

14. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.

Notes on the LCD panel of this display

• The Liquid Crystal Display (LCD) panel of this display has a very thin protective layer of

glass which is liable to marking or scratching, and cracking if struck or pressured. The liquid crystal substrate is also liable to damage under excessive force or extreme temperatures. Please handle with care.

• The response time and brightness of the LCD panel may vary with the ambient

temperature.

• Avoid placing the display in direct sun or where direct sun or spot lighting will shine

onto the LCD panel, as the heat may damage the panel and the external casing of the display, and the bright light will make viewing the display more difficult than necessary.

• The LCD panel consists of individual pixels to display images and is manufactured

according to the design specifications. While 99.9% of these pixels work normally,

0.01% of the pixels may remain constantly lit (in red, blue or green) or unlit. This is a technical limitation of the LCD technology and is not a defect.

Important safety instructions 7

• LCD screens, like plasma (PDP) and conventional CRT (Cathode Ray Tube) screens, are also susceptible to 'screen burn-in' or 'image retention' which can be found on the screen as visible fixed lines and shades. To avoid such damage to the screen, avoid displaying still images (like On-Screen Display menus, TV station logos, fixed/inactive text or icons) for more than 30 minutes. Change the aspect ratio from time to time. Fill the entire screen with the image and eliminate the black bars whenever possible. Avoid displaying images in 4:3 aspect ratio over a long period of time, otherwise there may be visible burn marks on the screen as two vertical lines. Note: Under certain circumstances, condensation may occur on the inner side of the cover glass, it's a natural phenomenon and will not affect the operation of the display. This condensation will usually disappear after around 2 hours of normal operation.

• ST series does not offer image retention function, for more information, please refer to installation guide.

• ST750K does not support landscape use; landscape use may cause display damage. BenQ warranty will not cover faulty usage.

• For ST series, when the power goes out unexpectedly, please make sure the time zone is correctly synced via the Internet, otherwise manual adjustment is needed.

Safety notice for remote control

• Do not put the remote control in the direct heat, humidity, and avoid fire.

• Do not drop the remote control.

• Do not expose the remote control to water or moisture. Failure to do so could result in malfunction.

• Confirm there is no object between the remote control and the remote sensor of the product.

• When the remote control will not be used for an extended period, remove the batteries.

Battery safety notice

The use of the wrong type of batteries may cause chemical leaks or explosion. Please note the following:

• Always ensure that the batteries are inserted with the positive and negative terminals in the correct direction as shown in the battery compartment.

• Different types of batteries have different characteristics. Do not mix different types.

• Do not mix old and new batteries. Mixing old and new batteries will shorten battery life or cause chemical leaks from the old batteries.

• When batteries fail to function, replace them immediately.

• Chemicals which leak from batteries may cause skin irritation. If any chemical matter seeps out of the batteries, wipe it up immediately using a dry cloth, and replace the batteries as soon as possible.

• Due to varying storage conditions, the battery life for the batteries included with your product may be shortened. Replace them within 3 months or as soon as you can after initial use.

• There may be local restrictions on the disposal or recycling of batteries. Consult your local regulations or waste disposal provider.

Important safety instructions8

BenQ ecoFACTS

BenQ has been dedicated to the design and development of greener product as part of its aspiration to realize the ideal of the “Bringing Enjoyment 'N Quality to Life” corporate vision with the ultimate goal to achieve a low-carbon society. Besides meeting international regulatory requirement and standards pertaining to environmental management, BenQ has spared no efforts in pushing our initiatives further to incorporate life cycle design in the aspects of material selection, manufacturing, packaging, transportation, using and disposal of the products. BenQ ecoFACTS label lists key eco-friendly design highlights of each product, hoping to ensure that consumers make informed green choices at purchase. Check out BenQ's CSR Website at

http://csr.BenQ.com/ for more details on BenQ's environmental commitments and

achievements.

CLASS II equipment

~ AC voltage

Package contents 9

Package contents

Open the sales package and check the contents. If any item is missing or damaged, please contact your dealer immediately.

LCD display

Power cord (by

region)

AAA battery x 2 Remote control

HDMI cable x 1 Quick start guide

• The type of power cord supplied may differ from that illustrated depending on your region of purchase.

• Before discarding the package, check that you haven't left any accessories inside the box.

• Dispose of packaging materials wisely. You can recycle the cardboard carton. Consider storing the package (if possible) for future transport of the display.

• Do not leave plastic bags within reach of young children or babies.

Setting up the display10

600.0

628.1

540.8

200.0140.5

WALL MOUNT SCREW:4-M8*10L

ST750K

ST860K

Thickness the wall mounting bracket

L2 mm (L3”)

LCD display

L1 mm

Setting up the display

Mounting the display

You can install the display on a vertical surface with a suitable wall mounting bracket or on a horizontal surface with the optional desktop stands. Please pay attention to the following notes during installation:

• This display should be installed by at least two adult persons. Attempting to install this display by only one person may result in danger and injuries.

• Refer the installation to qualified technicians. Improper installation may cause the display to fall or malfunction.

Installing the display on a wall

VESA Standard: ST750K: 600 x 200 mm (4 holes), 4 - M8 x 10L ST860K: 600 x 400 mm (4 holes), 4 - M8 x 25L

1. Place a clean, dry and lint-free cloth on a flat, horizontal and object-free surface.

Make sure that the size of the cloth is larger than the display.

2. Gently lay the display on the cloth with the LCD screen facing down.

3. Remove the desktop stands from the display if installed.

4. Identify the wall mounting screw holes on the back of the display as shown in the

illustration.

667

600

667

352.5

400

OFF/ON LAN

AV-IN

AUDIO-RAUDIO-LVIDEO AUDIO-OUT

HDMI3

HDMI2ARC

HDMI1

357.5

USB4

USB3USB3.0

4-M8*25L

USB2 USB1Coaxial-OUT

AC-IN

5. Install the wall mounting bracket on the display and attach the display to the wall according to the mounting bracket’s instructions. The length of the screw should exceed the thickness of the wall mounting bracket, please refer to below chart for each model. Make sure that all screws are tightened and secured properly. (Recommended torque: 16 (+2/-2) kgf/cm). The mounting means should be strong enough to bear the weight of the display.

Setting up the display 11

10mm (0.39")

Model L2 mm L3” Screw Length

ST750K 10 0.4” L1+10 mm ST860K 25 0.98” L1+ 25 mm

• To maintain proper ventilation, keep at least 10 mm of clear space from the back cover of the display to the wall.

• Please consult a professional technician for wall mount installations. The manufacturer accepts no liability for installations not performed by a professional technician.

Parts of the display and their functions12

ST750K

Parts of the display and their functions

Rear panel

No. Name Description

///

Scroll through settings and options in the OSD menu up, down, right, and left.

Turn the display on or off.

Open or close the OSD menu.

USB4

USB3USB3.0

USB2 USB1 Coaxial-OUT

AC-IN

HDMI3

HDMI2ARC

HDMI1

AUDIO-RAUDIO-LVIDEO AUDIO-OUT

AV-IN

OFF/ON LAN

INPUT

ST860K

12345

Parts of the display and their functions 13

No. Name Description

INPUT

/

/

• Select/confirm options in On-Screen Display (OSD) menu.

• Select input sources. Scroll through settings and options in the OSD menu up and

down.

• Scroll through settings and options in the OSD menu.

• Hot keys for audio volume adjustment.

MENU Open or close the OSD menu.

Turn the display on or off.

Parts of the display and their functions14

ST750K

USB4

USB3USB3.0

USB2 USB1 Coaxial-OUT

AC-IN

HDMI3

HDMI2ARC

HDMI1

AUDIO-RAUDIO-LVIDEO AUDIO-OUT

AV-IN

OFF/ON LAN

ST860K

12345

Input/output terminals

No. Name Description

USB-4 Access multimedia files on USB drives directly.

Access multimedia files on USB drives directly.

USB-3(3.0)

USB-2 Access multimedia files on USB drives directly.

• The users cannot use the USB port to update the software.

• The USB ports only support FAT / FAT32 format.

USB-1 Access multimedia files on USB drives directly.

COAXIAL OUT

Output digital audio signals via a coaxial cable to an external device.

Input/output terminals

WFEJP

BWJO

AUDIO-L AUDIO-R

HDMI-2_(ARC)_

AUDIO-OUT

ST750K

WFEJP

BWJO

AUDIO-L AUDIO-R

HDMI-2_(ARC)_

AUDIO-OUT

USB4

USB3USB3.0

USB2 USB1 Coaxial-OUT

AC-IN

HDMI3

HDMI2ARC

HDMI1

AUDIO-RAUDIO-LVIDEO AUDIO-OUT

AV-IN

OFF/ON LAN

ST860K

Parts of the display and their functions 15

Parts of the display and their functions16

12345

No. Name Description

LAN (10/100) Mbps

Connect to a network using the Ethernet cable.

AV-IN Composite video and audio input.

HDMI-3 Receive 4K2K 60Hz supported signals from an external device.

Receive 4K2K 60Hz supported signals from an external device.

HDMI-2_(ARC)_

ARC (Audio Return Channel) allows you to transfer audio from the display back down the HDMI cable to a soundbar or a home theater receiver. You can listen to your display's audio through other audio systems instead of the display's speakers.

HDMI-1 Receive 4K2K 60Hz supported signals from an external device.

AUDIO-OUT Output audio signals to an external device.

Parts of the display and their functions 17

5 6

12345

678

Remote control

POWER

Turn the display on or off.

INPUT

Select the input source.

CH RETURN

TV Channel return Note: It is only working on some specific regions.

INFO

Show the information of the current input source.

FAV

Favorite TV program Note: It is only working on some specific regions.

Meeting mode

Change the display image to the different mode under non-Android system Mode: Full, 4:3, Film, Subtitle, PC mode.

MULTI-MEDIA buttons

The buttons are used to operate the media functions under Multi-Media APP.

Numeric buttons (0-9)

Press to enter numbers.

SCREEN SHOT

Capture the printed screen and save to the USB drive.

CHLIST ( )

Delete a character / view program list. Note: It is only working on some specific regions.

MUTE

Turn on/off the sound.

VOL- / VOL+

Turn up/down the volume.

CH+ / CH-

Change program channels.

Parts of the display and their functions18

5 6

1415161718

192021

WPS

Open the WPS office app in Android

M-Player

Open the Media Player app in Android.

X-Sign

Open the X-Sign app in Android.

Setting

Open the setting function in Android.

BLANK

Blank and mute the screen (the screen will turn black) when the OSD menu is off. Press again to resume.

Activate the OSD menu.

FREEZE

Freeze the screen.

Confirm the selected options or save changes.

CURSOR KEYS (///)

Scroll through settings and options in the OSD menu.

BACK ( )

Press this key to return to previous page.

HOME ( )

Show the main screen of Android system.

Using the remote control











Installing remote control batteries

1. Open the remote control battery compartment cover.

2. Insert the supplied batteries ensuring that the positive and negative marked battery terminals match the (+) and (-) marks in the battery compartment.

The supplied batteries are provided for your convenience so that you can operate the display straight away. You should replace them as soon as possible.

3. Refit the battery compartment cover.

Parts of the display and their functions 19

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