Lenovo THinkVision T75 Installation guide

LFD Conference Machine Series FAQ
Product type
Commercial conference machine
Equipment model
iLFD
Version information
V2.0
Issue date
2022-7-15
Organization
Examine

CONTENTS
1． How can I confirm the iFLD’s serial number and model?----------------------------1
2． How do l setup my iFLD? -----------------------------------------------------------------1
3． How do I setup the Network on my iFLD? ---------------------------------------------2
4． How do I setup the Low Blu-Ray on my iFLD? ---------------------------------------2
5． How do l check my iFLD software version? -------------------------------------------3
6． Where do l find the iFLD's Storage Space?---------------------------------------------3
7． Where do l find the iFLD's factory Default and reset? --------------------------------3
8． Where do l find the iFLD's External Signal Source options ?------------------------4
9． How do l Lock Screen? --------------------------------------------------------------------4
10． White screen, white screen, flashing screen-------------------------------------------5
11． Automatic on / off when not in operation----------------------------------------------5
12． The large screen has no power, and the indicator light does not light up after
power on -------------------------------------------------------------------------------------------6
13． Black screen and dark display backlight-----------------------------------------------6
14． Screen flash --------------------------------------------------------------------------------7
15． Large screen garbage display------------------------------------------------------------7
16． Screen ghosting----------------------------------------------------------------------------7
17． Display double split screen --------------------------------------------------------------8
18． Screen display line and vertical strip ---------------------------------------------------8
19． Screen edge dark area---------------------------------------------------------------------8
20． No touch ------------------------------------------------------------------------------------8
21． Touch failure in large screen area -------------------------------------------------------8
22． Touch skip point ---------------------------------------------------------------------------9
23． Inaccuracy of touch -----------------------------------------------------------------------9
24． No sound from Android horn ------------------------------------------------------------9
25． Abnormal sound of horn --------------------------------------------------------------- 10
26． The remote control cannot be used --------------------------------------------------- 10

27． Front USB not working ---------------------------------------------------------------- 10
28． The front power on key has no function --------------------------------------------- 11
29． Large screen boot without image ----------------------------------------------------- 11
30． When writing, there are shaking (jumping) pen and broken pen (some can write)
----------------------------------------------------------------------------------------------------- 12
31． A lock appears on the screen ---------------------------------------------------------- 13
32． The wireless projector cannot cast the screen --------------------------------------- 14
33． Network connection failed ------------------------------------------------------------- 15
34． No local sound can be heard in the video conference------------------------------ 16
35． The screen projector has no sound on the screen (computer)--------------------- 17
36． Android and apple mobile phone projection ---------------------------------------- 18
37． Caton occurs when using app under Android --------------------------------------- 18
38． The screen projector is disconnected from time to time --------------------------- 18
39． There are lines on the large screen when it is not powered on, but there are no
lines when it is powered on-------------------------------------------------------------------- 19
40． Startup error: com mstar. IWB. Service stopped running ------------------------- 19
41． No touch in Android -------------------------------------------------------------------- 20
42． The Android camera is not recognized and cannot be connected ---------------- 20

1
Abnormal
phenomenon
Cause analysis
Terms of settlement
1．How can I
confirm the iFLD’s
serial number and
model?
1.1. On the back and side of the
iFLD, you can find the Side sticker
and Nameplate sticker.
1.2. Click the "Setting" icon in the"
More "interface to enter the setting
interface, the About Device
submenu is displayed. You can find
the iFLD's Serial Number and the
model.
If you want to contact Service
Center, please also provide the info
of the nameplate photos and so on.
2．How do l setup
my iFLD?
Click the "Setting" icon in the"
More "interface to enter the setting
interface, including common
functions, network Settings, time
and language, advanced Settings,
about devices and other
information.

2
Abnormal
phenomenon
Cause analysis
Terms of settlement
3．How do I setup
the Network on my
iFLD?
The Network sub-menu is
displayed, allowing you to set the
wireless network, wired network,
hotspot
information, and Bluetooth
functions.
● Wireless network: View the
MAC address of the device and
enable or disable Wi-Fi.
● On wired networks: View the
MAC address, IP address, gateway,
subnet mask, and DNS
information.
It can automatically obtain
LAN IP or LAN IP as required.
● Hotspot: You can set items
related to portable Wi-Fi hotspots.
● Bluetooth: Can be connected to
enable bluetooth function.
4．How do I setup
the Low Blue Lignt
on my iFLD?
Enter the low Blue light mode:
Click the "Settings" button in the
sidebar and select "Advanced
Settings" to enter the page. Then
select the "Low Blue Light Mode"
button and click to enter the low
blue light mode.
The product's "Low Blue light

3
Abnormal
phenomenon
Cause analysis
Terms of settlement
mode" is certified by TUV
RHINeland for low blue light. The
incidence of blue light problems
affecting eye health has increased
in recent years. Low blue light
technology can reduce blue light
levels. It is recommended to use
low blue light mode to protect your
eyes.
5．How do l check
my iFLD software
version?
Click the "Setting" icon in the"
More "interface to enter the setting
interface, the About Device
submenu is displayed. You can
select system Upgrade, Android
Version.
6．Where do l find
the iFLD's Storage
Space?
Click the "Setting" icon in the"
More "interface to enter the setting
interface, the About Device
submenu is displayed. You can find
Storage Space.
7．Where do l find
the iFLD's factory
Default and reset?
Click the "Setting" icon in the"
More "interface to enter the setting
interface, the About Device
submenu is displayed. You can
select factory Default.

4
Abnormal
phenomenon
Cause analysis
Terms of settlement
8．Where do l find
the iFLD's External
Signal Source
options ?
Click the signal source icon
"External Signal Source" in the
floating bar of the home page, and
the system pops up the external
signal port tool window (display
Built-in COMPUTER 、 Front
HDMI 、 front Type-C 、
Type-C 、HDMI 1 、HDMI 2 、
HDMI 3 、 DP 、VGA、AV ).
Click the "External Signal Source"
icon again to close the port
window.
Wired signal sources include Front
HDMI 、 front Type-C 、
Type-C 、 HDMI 1 、HDMI 2 、
HDMI 3 、 DP 、VGA 、AV.
Click the icon of signal source port,
and the intelligent large screen will
display the signal source screen in
full screen
9．How do l Lock
Screen?
In startup state, tap the "lock
screen" button of the remote
control to enter the lock screen
state, and the lock screen icon
appears on the interface, locking
the screen touch function.
You can exit the screen-locked

5
Abnormal
phenomenon
Cause analysis
Terms of settlement
state in the following ways:
● Press the "lock screen" button of
the remote control;
● Short press the front power
button;
● Tap the screen 3 times in quick
succession with your finger to
restore touch control.
10．White screen,
white screen,
flashing screen
1. IWB mainboard signal output
fault
1. Re -upgrade the software
2. The abnormal power supply of
220V mains power supply or
unstable voltage causes the power
board and LCD to burn out
2. Replace the new machine
11．Automatic on /
off when not in
1. Whether the timing switch is set
1. Turn off the automatic switch
function

6
Abnormal
phenomenon
Cause analysis
Terms of settlement
operation
2. Check whether the intelligent
large screen is in sleep state after
not operating for a long time
2. Set the smart screen never to
sleep
3. Check whether the input power
supply is stable
3. Plug in and out the input power
supply again
4. Re -upgrade the software
5. Replace the new machine
12．The large
screen has no
power, and the
indicator light does
not light up after
power on
1. Whether the power supply is
powered
1. Plug the power cord again, turn
on the AC, and then power on
2. Whether the power cord is firm
and whether the AC is turned on
2. Replace the new machine
13．Black screen
and dark display
backlight
1. Screen backlight line short
circuit
1. Replace the new machine
2. The power board is broken

7
Abnormal
phenomenon
Cause analysis
Terms of settlement
3. IWB board is broken
4. The internal connecting wire of
the front switch falls off or has
poor contact (caused by turbulence
during logistics transportation)
5. The connecting line of logic
board falls off or has poor contact
14．Screen flash
1. IWB mainboard program error
1. Re -upgrade the software
2. V-byone screen line is defective
2. Replace the new machine
15．Large screen
garbage display
1. Incorrect screen parameters
1. Re -upgrade the software
2. IWB mainboard card is defective
2. Replace the new machine
16．Screen
ghosting
1. Incorrect screen parameters
1. Re -upgrade the software