BenQ Interactive Flat Panel T420 Tl550 T650 User Manual

							Parts of the display and their functions 11
Input/output terminals
T420TL550
T650
No.NameDescription
AUDIO IN 
(AUDIO1)Receives audio signals from an external device (such as a 
computer).
AUDIO OUT (R/L)Outputs audio signals from an audio or HDMI input source to an 
external device.
SPEAKERS (R/L)  Outputs audio signals from an audio or HDMI input source to 
external speakers.
AUDIO IN
(AUDIO2/AUDIO3)Receives audio signals from an external device (such as a VCR or 
DV D pl aye r).
VIDEO IN (HDMI)Receives HDMI signals from an external device (such as a Blu-ray 
disc player).
15671112141516
138
234910
T420
TL550 / T650
5671112141516
138
2349101
1
2
3
4
5 
						

							Parts of the display and their functions 12
VIDEO IN (DVI-D)Receives DVI signals from an external device (such as a 
computer).
VGA INReceives analog RGB signals from an external device (such as a 
computer).
VGA OUTOutputs analog RGB signals from the VGA IN input to another 
display.
RS232C IN/OUTFor external control and multi-display operation.
• RS232C IN: receives control signals from a computer or 
another display.
• RS232C OUT: outputs control signals from the RS232C IN 
input to another display.
VIDEO IN 
(COMPONENT)Receives component video (YPbPr) signals from an external 
device (such as a DVD player, HDTV device or Laser disc player).
VIDEO IN (S-
VIDEO)Receives S-Video signals from an external device (such as a VCR 
or DVD player).
VIDEO INReceives composite video signals from an external device (such as 
a VCR or DVD player).
VIDEO OUTOutputs composite video signals from the VIDEO IN input to 
another display.
AC SWITCH ON/
OFFTurns on or off the main power.
AC INConnects to a power outlet via the supplied power cord.
AC OUTRelays the AC power from the AC IN jack to another display.6
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							Parts of the display and their functions 13
Remote control
 MUTE
Turns on or off the mute function.
 Numeric buttons
These buttons are not used and do not 
work.
 INPUT
Selects an input source.
 
Scrolls through settings and options in the 
OSD menu.
  / VOL-
• Scrolls through settings and options in 
the OSD menu.
• Turns down the volume.
 INFO
Shows the current input source and resolution.
 VGA
Selects the VGA input source.
 DVI
Selects the DVI input source.
 Power
Turns on the display or puts it in standby mode. 
 EXIT
Returns to a previous menu or closes the OSD 
menu.
 ENTER
Confirms your selection or save changes.
  / VOL+
• Scrolls through settings and options in the OSD 
menu.
• Turns up the volume.
 
Scrolls through settings and options in the OSD 
menu.
 MENU
Opens or closes the OSD menu.
 AV
Selects the AV input source.
 HDMI
Selects the HDMI input source.
 YPbPr
Selects the YPbPr input source.
YPbPr
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							Parts of the display and their functions 14
Using the remote control
Installing remote control batteries
Remote control usage tips
• Point and aim the top front of the remote control directly at the display’s remote 
control sensor window when you press the buttons.
• Do not let the remote control become wet or place it in humid environments (like 
bathrooms).
• If the display’s remote control sensor window is exposed to direct sunlight or strong 
light, the remote control may not operate properly. In this situation, change the light 
source, readjust the angle of the display or operate the remote control from a location 
closer to display’s remote control sensor window.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.
YPbPr
Max. 10 m
(32.8 feet) T420 TL550 / T650 
						

							Setting up the display 15
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
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.
400 mm
(15.75)
200 mm
(7.87)
(For T420)*Screw type: M6
200 mm
(7.87)
400 mm
(15.75)
200 mm
(7.87)(For TL550)*Screw type: M8
(For T650)
400 mm
(15.75)
400 mm
(15.75)*Screw type: M8 
						

							Setting up the display 16
Installing the optional desktop stands 
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 by at least 10 mm. Make 
sure that all screws are 
tightened and secured properly. 
(Recommended torque: 470 - 
635N•cm). The mounting means 
should be strong enough to bear 
the weight of the display.
• 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.
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.
Thickness of the 
wall mounting 
bracket
10 mm
(0.39) LCD display
10mm
(0.39) 
						

							Setting up the display 17
3. Place the desktop stands on the 
display as illustrated.
4. Use the screws and a suitable 
screwdriver to secure the stands on 
the display.(T650)
(T420 / 
TL550)
(T420 / 
TL550)(T650) 
						

							Setting up the display 18
Connecting audio/video signals
Pay attention to the following notes when you connect cables:
• Please turn off all devices.
• Familiarize yourself with the audio/video ports on the display and the devices you want 
to use. Be aware that incorrect connections may adversely affect picture quality.
• Do not remove cables from the ports by pulling the cable itself. Always grasp and pull 
the connectors at the end of the cable. 
• Ensure that all cables are fully inserted and firmly seated.
Connecting the VGA input1. Connect the VGA IN jack on the display to the VGA output jack on a computer using 
a D-Sub (15-pin) cable.
2. Connect the computer’s audio output jack to the 
AUDIO IN (AUDIO1) jack on the 
display using a suitable audio cable.
3. If a second display is used, connect the 
VGA OUT jack on the first display to the 
VGA IN jack on the second display using a D-Sub (15-pin) cable. This relays the VGA 
input signal from the first display to the second one. 
						

							Setting up the display 19
4. To view images from this input, press the VGA button on the remote control.
The audio cable is not supplied and should be purchased separately.
First display Second display
D-Sub (15-pin) cable
D-Sub (15-pin) cable Audio cable
Computer TL550 / 
T650
T420 
						

							Setting up the display 20
Connecting the digital input
1. Connect the VIDEO IN (DVI-D) jack on the display to the DVI-D output jack on a 
computer using a DVI-D cable. If the computer has an HDMI output jack, connect 
the computer’s HDMI output jack to the VIDEO IN (HDMI) input jack on the display 
using an HDMI cable or a DVI-D to HDMI conversion cable. 
2. Connect the computer’s audio output jack to the AUDIO IN (AUDIO1) jack on the 
display using a suitable audio cable.
3. To view video image from this input, press the DVI or HDMI button on the remote 
control.
The cables are not supplied and should be purchased separately.
Audio cable
ComputerDV I- D cab le DV I- D to 
HDMI 
conversion 
cableHDMI 
cable TL550 / T650
T420