Acer Nitro VG270 User manual

LIFECYCLE
EXTENSION GUIDE
ACER_LCD_VG270

Safety Notice
Any person attempting to service this chassis must familiarize with the chassis and be aware
of the necessary safety precautions to be used when serving electronic equipment containing
high voltage
Contents
Table of Contents
Important Safety Notice .................................................................................3
1. Exploded Diagram ......................................................................................4
2. Wiring connectivity diagram ....................................................................7
3. Mechanical Instruction ..............................................................................8
4. Assembly and Disassembly SOP ............................................................9
5. FW Upgrade SOP..........................................................................................15
6. Troubleshooting ......................................................................................18
7. FRU List ....................................................................................................21

3
Important Safety Notice
Product Announcement:
This product is certificated to meet RoHS Directive and Lead-Free produced definition. Using approved
critical components only is recommended when the situation to replace defective parts. Vender
assumes no liability express or implied, arising out of any unauthorized modification of design or
replacing non-RoHS parts. Service providers assume all liability.
Qualified Repairability:
Proper service and repair is important to the safe, reliable operation of all series products. The
service providers recommended by vender should being aware of notices listed in this service
manual in order to minimize the risk of personal injury when perform service procedures. Furthermore,
the possible existed improper repairing method may damage equipment or products. It is
recommended that service engineers should have repairing knowledge, experience, as well as
appropriate product training per new model before performing the service procedures.
NOTICE:
! To avoid electrical shocks, the products should be connect to an authorized power cord, and turn
off the master power switch each time before removing the AC power cord.
! To prevent the product away from water or explosed in extremely high humility environment.
! To ensure the continued reliability of this product, use only original manufacturer’s specified parts.
! To ensure following safety repairing behavior, put the replaced part on the components side of
PWBA, not solder side.
! To ensure using a proper screwdriver, follow the torque and force listed in assembly and
disassembly procedures to screw and unscrew screws.
! Using Lead-Free solder to well mounted the parts.
! The fusion point of Lead-Free solder requested in the degree of 220°C.

QG271
QG271 3
5.1 5.7

QG271 89

QG271 90

7
2. Wiring connectivity diagram
Power supply wire for screen Connct the main board and
screen FFC wire Connect the horn wire
FFC wire light bar power supply wire Connect the key board wire

3. Mechanical Instruction
Tools Required
List the type and size of the tools that would typically can be used to disassemble the product to a point
where components and materials requiring selective treatment can be removed.
Tool Description:
- working table
- Screw-driver
- Knife
- glove
- cleaning cloth
- ESD protection
8

4. Assembly and Disassembly SOP
4.1 Disassembly Procedures
Preparation before disassemble
1.Clean the room for disassemble
2.Identify the area for monitor
3.Check the position that the monitors be placed and the quantity of the monitor ;prepare the area for material flow;
according to the actual condition plan the disassemble layout
4.Prepare the implement, equipment, materials as bellow:
1) working table
2) Screw-driver
3) knife
4) glove
5) cleaning cloth
6) ESD protection
Prepare the worktable and remove the screws of the backcover
Disassemble the backcover and disassemble the key connector.
S2
S1
9

PICTURE 1 PICTURE 2 PICTURE 3
USB SIDE
Board
USB
Board
S3 Disassemble thetapesand speakers screws
S4
S5
Disassemblethekey IRLenscomponents
Disassembletheconnecttedlines.
10

PICTURE 1 PICTURE 2
NOTE:
Circuit boards >10 cm²has been highlighted with the yellow rectangle as above image shows.
Please detach the Circuit boards and follow local regulations for disposal.
BD
I/F BD
P/BD
Remove themainboard
S6
Remove the main board components
You will see the module
S8
S7
11

4.2 Assembly Procedures
Preparation before assemble:
1.Clean the room for work
2.Identify the area for material
3.Prepare the implement, equipment, materials as bellow：
1) working table
2) Screw-driver
3) Knife
4) glove
5) cleaning cloth
6) ESD protection
S1
,
-
Insert connect lines,put themoduleon the worktable.Install the main board to the bracket
.
Take the Panel on the sponge cushion.
USB BD
I/F BD
P/BD
S2
PICTURE 1
PICTURE 2
12

S3
Insert connect lines and check
S4
Install speakers screws and paste the black tapes
S5
Process and install key IRand lenscomponents.
LED
PICTURE 1
PICTURE 2
PICTURE 3
13

14
S6
Place the rear housing on the module without fastening
S7
IInsert the key IRand speakerslines. Install the rear housing to the module and fix it with the
lock screw
S8
Check the appearence

1. Unzip the RTDCustomerTool_V3.9Beta4.rar
2. Run the RTDTool.exe
Follow the prompt steps to install the TRDTool
FW Upgrade SOP
HDMI line
HDMI端口
HDMI端口
Step up3
Step up1
Step up5
Step up6
Step up4
Step up2
3. FW Upgrade Process
15

Note that the monitor needs to be powered on before upgrading;；
Setp up1: Choose Access method as RealtekUSB
Step up2: Confirm that the USB upgrade board is connected to OK；
Setp up3: Double-click to select the ISP column；
Step up4: Check the first line 0 and place the box；
Step up5: Click to select and import the bin file path of the
software to be upgraded;
Setp up6: Click to start;
Start the upgrade process
Upgrade OK prompt
16

1. Enter factory mode
We have 2 different way can enter to Factory mode, shown as below:
The first way: after the burning software is completed, it defaults to the power on
state and will automatically enter the factory mode, At the same time, it also enters
the aging mode. At this time, if there is no signal input, it starts to age and the soft
shutdown exits.
The second way: when the display is powered on and off, press the menu key all the
time and power up at the same time
Until the display is normal, enter factory mode and aging mode at the same time,
At this time, if there is no signal input, aging will start, and soft shutdown will exit
aging and exit factory mode.
3.Check FW Version and precautions through Factory Menu
2. Exit factory menu mode press the key left and right keys to
select "exit", and then press the key to exit；
Key function description: key is confirm key, key
selection or adjustment,Key has no function, key is power key
(long press for 3S to shut down, power on and press once.
Another point to note: power off in factory mode does not exit from
for 3S before you exit factory mode. You need to press the long key
from factory mode.
17

5. Troubleshooting
5.1 No Display or display is unstable on analog or digital port:
No picture or picture unstable on analog port and digital port
Power off Yes Turn on power
No
Does cable plugs in No Plug the cable then turn on power
Connector? again.
Yes
Does power stable? No Check Power Board DC-DC circuit and regulator
Yes
Is Power LED light Green or Amber? No Check Key BD and Key BD cable
Yes
Is Power LED status normal? No Replace IF BD
Yes
Does crystal work correctly? No Check crystal CKT or replace it ( Y1 )
Yes
Is Interface BD normal? No Replace interface BD
Yes
Is LVDS cable connect OK? No Plug LVDS cable again or replace it
Yes
Replace Panel
18

5.2 Button function
OSD is not working
Yes
Is control BD connecting? No Plug control BD then retry
Yes
Is button key normally? Yes Replace control BD then retry
No
Replace Control BD
Is OSD working??
No
Check Interface BD
5.3 OSD function
OSD doesn’t work
Is control BD working? No Replace control BD
Check interface BD
19

Blue light is on
Power on
Replace the key board
Blue light is flashi
n
g
With source input
Power on
Power on
With source input
YES
YES
YES
NO
NO
NO
NO
YES
Blue light do not wor
k
YES
NO
Normal
Normal
YES
NO
5.4 L E D l i g h t
On: Blue light is always on
No Sigal: Blue light is flashing
Standby: Blue light do not work
20
Replace the key board