acer XB253Q Smart Monitor User Manual

: June 4, 2024
: Acer

Table of Contents

Important Safety Notice
Exploded Diagram
- Product Exploded Diagram
Wiring connectivity diagram
Mechanical Instruction
Disassembly and Assembly SOP
- Disassembly Procedures
- Assembly Procedures
Troubleshooting
FRU List
Documents / Resources
- Read User Manual Online (PDF format)
- Download This Manual (PDF format)

acer XB253Q Smart Monitor

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

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.

Exploded Diagram

Product Exploded Diagram

Item	ODM DESCRIPTION
1	ASSY FT
2	LIGHT BAR
3	BKT TRIM
4	MID-FRAME
5	PANEL
6	PCB SPS BD
7	PCB IF BD
8	USB BD
9	ASSY SHD
10	ASSY RC
11	ASSY CLMN
12	ASSY BASE
13	SCRW
14	CTRL BD
15	SCRW

Wiring connectivity diagram

There are two types of wiring diagrams for model XB253Q. The wiring connectivity position will be different according to the ACTUAL PCBA connector position. Please base on different SKU refer to below diagram.

NOTE: INF BD= Interface Board, PWR BD=Power Board, CTRL BD= Control Board

SKU with USB.
SKU without USB.

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: Philips-head screwdriver, Hex-head screwdriver
– Knife
– glove
– cleaning cloth
– ESD protection

Disassembly and Assembly SOP

XB253Q

Disassembly Procedures

Preparation before disassemble

Clean the room for disassemble
Identify the area for monitor
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
Prepare the implement, equipment, materials as bellow:

working table
Screw-driver: Philips-head screwdriver, Hex-head screwdriver
knife
glove
cleaning cloth
ESD protection

After unplugging the power cord, the power board still have power energe. Please pay attention when disassembling/assembling.

S1
Disassemble the RC, stand and base

| Before Disassembling & Assembling, monitor need to be put on the sponge and the Insulation glove must be wore during the process.
Disassemble base and stand from the RC(Rear Case) as picture 1.
Unlock RC center screw as picture 1.
Disassemble RC from monitor and extract the FFC CTRL from the IF BD as picture 2

S2
Disassemble CTRL BD

| Tear off the adhesive tape of the FFC CTRL from the RC as picture 1.
Disassemble the CTRL BD from the RC as picture 2.
Disassemble the FFC CTRL from the CTRL BD.
PICTURE 1 P

S3
Disassemble SPK and Lamp wire

| Tear off 2 tapes of the SPK wire, extract the SPK wire from the IF BD and disassemble the SPK from the MF as picture 1.
Tear off the black tape of the lamp wire, tear off black mylar on SHD and extract the lamp wire from the P/BD as picture 2.
Extract the LED wire from the IF BD and tear off the wire from the SHD as picture 3.

S4
Disassemble USB BD

| Unlock USB screw.
Extract the USB-FFC from the USB BD and side USB BD.
Disassemble the Sponge.

S5
Disassemble ASSY Trim and Light Bar

| Unlock 2 TRIM screws and disassemble the ASSY TRIM from the MF as picture 1.
Disassemble the LED BD from the Trim and extract the LED wire from the LED BD as picture 2.
Tear off the adhesive tape as picture 3.
Unlock 10 trim screws as the picture 2
Disassemble the SHD ,the light bar and the LED BD as the picture 3

S6
Disassemble SHD and MF

| Extract 1 FFC wires from the panel as picture 1.
Unlock 9 screws from the MF and disassemble the MF from the Pane as picture 2.
Extract the lamp wire from the panel as picture 2.

S7
Disassemble I/F BD and P/BD

| Tear off Mylar from the SHD.
Unlock 7 PCBA screws from the PCBA BD and 1 DP screw as picture 1
Disassemble the USB BD from the SHD and extract the USB BD wire from USB BD as the picture 2.
Disassemble the I/F BD from the SHD and extract the P/BD wire and FFC LVDSfrom I/F
BD as the picture 3
Disassemble the P/BD from the SHD.

NOTE : Circuit boards >10 cm² has been highlighted with the yellow rectangle as above image shows. Please detach the Circuit boards and follow local regulations for disposal.

Assembly Procedures

Preparation before assemble:

Clean the room for work
Identify the area for material
Prepare the implement, equipment, materials as bellow：

working table
Screw-driver: Philips-head screwdriver, Hex-head screwdriver
Knife
Glove
Cleaning cloth
ESD protection

After unplugging the power cord, the power board still have power energe. Please pay attention when disassembling/assembling.

S1
Assemble I/F BD and P/BD from SHD.

| Before Disassembling & Assembling, monitor need to be put on the sponge and the Insulation glove must be wore during the process.
Put the SHD on the worktable. Locate the P/BD into the SHD.
Insert FFC LVDS, P/BD wire and USB wire to the I/F BD.
Locate the I/F BD into the SHD as picture 2.
Insert USB wire to USB-BD and locate the USB-BD into the SHD; then lock 7 screws as picture 3
Lock 1 screw and assemble the Mylar on the SHD as the picture 4.

S2
Assemble Panel to MF

| Take the Panel and insert lamp wire to panel marked as picture 1.
Assemble the MF to the panel and lock 9 screws to the MF as picture 2.
Stick 1 piece of adhesive tape on the little connector of lamp wire as picture 3.

S3
Assemble ASSY TRIM and Light bar

| Insert the LED wire into the LED BD and assemble the LED BD into the TRIM as picture 1.
Assemble the ASSY TRIM on the MF.
Lock 2 screws to the ASSY TRIM as the picture 2.
Assemble the Light Bar and LED BD into the ASSY TRIM as the picture 3.
Assemble the SHD .Lock 10 light bar screws as the picture 4.
Stick a piece of adhesive tape cover the SHD as the picture 5.

S4
Assemble SHD

| Insert the LVDS into the Panel, locate the SHD on the Panel and insert the big connector of the lamp wire to P/BD as picture 1.
Paste 1 mylar on SHD as picture 2.
Tear off the 4 gums on the LED wire, arrange the LED wire and insert the LED wire into the I/F BD as picture 3.

S5
Assemble USB BD and SPK

| Assemble the Sponge on the Panel as the picture 1.
Insert USB-FFC into side USB BD. Assemble the side USB BD on the MF and lock 1 USB screws; then insert the wire of SPK into the I/F BD as the picture 1.
Insert the SPK wire to the I/F BD as the picture 2.
Arrange the wire of the SPK (Attention: Keep the speaker wire straight, and the middle of the speaker wire is not allowed to be placed on the step of the MF.)
Tear 2 tapes to fasten the SPK wire as the picture.

S6
Assemble CTRL BD

| Assemble the FFC CTRL to the CTRL BD and assemble the CTRL BD to the RC as picture 1.
Stick a piece of adhesive tape to fasten the FFC CTRL on the RC as picture 2.

S7
Assemble the RC, stand and base

| Insert the FFC CTRL to the IF BD and assemble the RC to the MF as picture 1.
Lock 1 screw to the RC, and lock 4 screws to assemble the Stand and Base to Monitor as picture 2.

NOTE: Circuit boards >10 cm² has been highlighted with the yellow rectangle as above image shows. Please detach the Circuit boards and follow local regulations for disposal.

Troubleshooting

TROUBLESHOOTING

Before sending your LCD monitor for servicing, please check the trouble- shooting list below to see if you can self-diagnose the problem.

(VGA Mode)

Problems	Current Status	Remedy
No Picture	LED ON

Using OSD, adjust brightness and contrast to maximum or reset to their default settings.

LED OFF|

Check the power switch.
Check if AC power cord is properly connected to the monitor.

LED displays amber color|

Check if video signal cable is properly connected at the back of monitor.
Check if the power of computer system is ON.

Abnormal Picture| Unstable Picture|

Check if the specification of graphics adapter and monitor is in compliance which may be causing the input signal frequency mismatch.

Display is missing, center shift, or too small or too large in display size|

Using OSD, adjust RESOLUTION, CLOCK, CLOCK-PHASE, H-POSITION and V-POSITION with non-standard signals.
Using OSD, in case of missing full-screen image, please select other resolution or other vertical refresh timing.
Using OSD, in case of missing full-screen image, please select other resolution or other vertical refresh timing.
Wait for a few seconds after adjusting the size of the image before changing or disconnecting the signal cable or powering OFF the monitor.

Abnormal Sound (Only Audio-Input model) (Optional)| No sound, or sound level is too low|

Check the audio cable with the host PC is connected.
Check if the volume setup of the host PC is in minimum position and try to raise the volume level.

(HDMI/DP Mode)

Problems	Current Status	Remedy
No Picture

LED ON

|

Using OSD, adjust brightness and contrast to maximum or reset to their default settings.

LED OFF

|

Check the power switch.
Check if AC power cord is properly connected to the monitor.

LED displays amber color|

Check if video signal cable is properly connected at the back of monitor.
Check if the power of computer system is ON.

Abnormal Sound (Only Audio-Input model) (Optional)| No sound, or sound level is too low|

Check the audio cable with the host PC is connected.
Check if the volume setup of the host PC is in minimum position and try to raise the volume level.

FRU List

This chapter gives you the FRU (Field Replaceable Unit) listing in global configurations of ACER XB253Q. Refer to this chapter whenever ordering for parts to repair or for RMA(Return Merchandise Authorization).

Please note that WHEN ORDERING FRU PARTS, you should c heck the most up-to- date information available on your regional web or channel. For whatever reasons a part number change is made, it will not be noted on the printed Service Guide. For AUTHORIZED

SERVICE PROVIDERS, your office may have a DIFFERENT part number code from those given in the FRU list of this printed Service Guide. You MUST use the local FRU list provided by your regional office to order FRU parts for repair and service of customer machines NOTE: T o scrap or to return the defective parts, you should follow the local government ordinance or regulations on how to dispose it properly, or follow the rules set by your regional office on how to return it.