Acer KA270H Bedienungsanleitung

Acer Monitor KA270H

LIFECYCLE EXTENSION

GUIDE

Contents

Table of Contents

Important Safety Notice.................................................................................3

1. Exploded Diagram......................................................................................4

2. Wiring connectivity diagram ....................................................................5

3. Mechanical Instruction..............................................................................6

4. Disassembly and Assembly SOP ............................................................7

5. Troubleshooting.......................................................................................12

6. FRU List .....................................................................................................14

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

ACER KA270H

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.

ACER KA270H

1. Exploded Diagram

1.1 Product Exploded Diagram

INDEX

DESCRIPTION

MID-FRAME

PCBA CTRL BD

LCDM 27W AUO M270HVN02.3Q0 Z

PCBA SPS BD

PCBA IF BD

FFC LVDS 30P P1 B276HL

ASSY SHD AH1 1A1D1H+SPK V276HL

#SPK*2 2.5W 4OHM 320/320MM

ASSY RC 1A1D1H+SPK DB22A V276H

ASSY CLMN KA270H

ASSY BASE KA270H

ASSY TRIM K272HL

ACER KA270H

2. Wiring connectivity diagram

There are four types of wiring diagrams for model KA270H. 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

1. SKU with USB

2. SKU without USB

ACER KA270H

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

ACER KA270H

4. Disassembly and Assembly SOP

KA270H

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: Philips-head screwdriver, Hex-head screwdriver

3) knife

4) glove

5) cleaning cloth

6) ESD protection

After unplugging the power cord, the power board still have power energe. Please pay attention

when disassembling/assembling Power BD.

Disassemble the

RC(Rear Case), 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 Stand and Base from the RC(Rear Case). Unlock RC screws.

Disassemble RC from monitor.

Disassemble SHD and

Unlock 9 MF screws and 2 trim screws as picture 1.

Unlock the Hexagonal screws as picture 2.

PICTURE 1 PICTURE 2

ACER KA270H

Disassemble the lamp wire

Tear down AL-Tape off SHD(Shielding) as picture 1.

Tear off the tape on the lamp wire and etract the lamp wire form the P/BD(Power Board)

as picture 2.

PICTURE 1 PICTURE 2

Disassemble LVDS cable

and CTRL BD

Tear off the tape, pull out the FFC as picture 1.

Pull the CTRL BD-FFC out of the PCBA and the CTRL BD, tear off the tape and

disassemble the CTRL BD-FFC

PICTURE 1 PICTURE 2

Disassemble the Bezel from

panel.

Tear off the tapes, take out the Panel and the CTRL BD of the Bezel

Disassemble I/F BD and

P/BD from SHD.

Disassembled the Mylar and unlock all screws.

Disassemble the I/F BD from the SHD and extract the P/BD wire.

Extract the FFC LVDS from the I/F BD.

Disassemble the P/BD from the SHD.

PICTURE 1 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.

I/F BD

P/BD

ACER KA270H

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

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

disassembling/assembling Power BD.

Assemble I/F BD and P/BD

Before Disassembling & Assembling, monitor need to be put on the sponge

and the Insulation glove must be wore during the process.

Insert the FFC to the I/F.

Insert the P/BD-Wire to the I/F BD and the P/BD.

Place the I/F BD and the Power BD to main SHD.

stick one tape on the SHD remarked with red circle and lock all screws as the picture.

Put Mylar on the Power BD.

Assemble MF and Panel

Take the Panel and insert lamp wire to panel

Assemble the MF to the panel ,and lock 9 screws to the MF as the picture.

PICTURE 1

I/F BD

P/BD

ACER KA270H

Assemble SHD

Lock the Hexagonal screws as picture 1.

Use jig to put the SHD in correct position on Panel. Take off the jig and stick two AL

tapes as picture 2.

PICTURE 1 PICTURE 2

Note: please refer to Appendix for the jig and select “None” for page scaling item.

Assemble LVDS cable

Insert the LVDS cable to the Panel and stick one tape on LVDS cable.

Assemble the lamp wire

Insert the lamp wire to the P/BD .

Stick 2 tape to fasten the lamp wire and one AL-Tape on SHD as the picture.

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