Acer SA220Q Lifecycle Extension Guide

Important Safety Notice

Product Announcement: This product is certified to meet RoHS Directive and Lead-Free production definition. Using approved critical components only is recommended when replacing defective parts. Acer 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 are important to the safe, reliable operation of all series products. Service providers recommended by Acer should be aware of notices listed in this service manual to minimize the risk of personal injury during service procedures. Improper repairing methods may damage equipment or products. Service engineers should have repairing knowledge, experience, and appropriate product training before performing service procedures.

NOTICE:

• To avoid electrical shocks, connect products to an authorized power cord and turn off the master power switch each time before removing the AC power cord.
• Prevent the product from water or exposure to extremely high humidity environments.
• To ensure continued reliability, use only original manufacturer's specified parts.
• To ensure following safety repairing behavior, place the replaced part on the components side of PWBA, not the solder side.
• To screw and unscrew screws, use a proper screwdriver and follow the torque and force listed in assembly and disassembly procedures.
• Use Lead-Free solder to mount parts.
• The fusion point of Lead-Free solder is requested at 220°C.

1. Exploded Diagram

The exploded diagram shows the components of the Acer SA220Q monitor. A table lists the part number, description, quantity, material, and color finish for each component.

This drawing is the property of RAKEN Technology Ltd. Unauthorized reproduction in whole or in part is prohibited by law.

2. Wiring Connectivity diagram

The diagram illustrates the wiring connections within the monitor, showing connections such as B/L to M/B, Key board to M/B, LVDS to M/B, and SPK to M/B.

3. Mechanical Instruction

Tools Required

The following tools are typically used to disassemble the product to a point where components and materials requiring selective treatment can be removed:

• working table
• Screw-driver
• Knife
• glove
• cleaning cloth
• ESD protection

4. Assembly and Disassembly Procedures

Disassembly Procedure

1. Pull the base & stand assembly out.
2. Unscrew two screws at the I/O area.
3. Disassemble the rear cover by a thin plastic tool from a slot at the bottom of the rear cover.
4. Pull up the rear cover and pull out all connectors.
5. Disassemble the deco cover.
6. Unscrew PCBA's screws and disassemble frame L&R.
7. Remove all cables from LCM.
8. Remove FFC from the display board.
9. Unscrew hex nuts and six screws and remove the main board PCBA from the main shielding.
10. Unscrew the screw and separate the base & neck assembly.
11. Remove six silicon rubbers.
12. Unscrew six screws and separate the base assembly.
13. Unscrew two screws and remove the bracket.
14. Unscrew two screws and separate the hinge assembly.

Assembly Procedure

1. Assemble 8 FFC to the key board.
2. Assemble the key board to the rear cover.
3. Assemble the deco cover to the LCM.
4. Assemble frame L&R and lock screws to fix.
5. Assemble the main board into shielding and insert the 30pin FFC to MB, then place the main board on LCM.
6. Insert the 30 pin LVDS FFC to LCM, then use yellow tape to tape FFC.
7. Lock screws to fix MB.
8. Insert 10pin FFC to LCM and LCM and insert 30pin FC to panel, then use yellow tape to fix FFC.
9. Use Al tape to tape the shielding and LCM.
10. Insert 8pin FFC to MB and assemble the rear cover with LCM.
11. Lock rear cover screws (in red circle).

5. Troubleshooting

5.1 Test flow for abnormal machine:

A flowchart guides the user through troubleshooting steps for an abnormal machine. It covers checks for DC adaptor connection, power indicator LED, ACER logo display, LED backlight, and the 30-pin FFC cable. If the screen shows white blank, it suggests checking the 30-pin FFC cable connection. If the display is normal, the process ends. Otherwise, it refers to specific debug sections.

5.2 LED backlight debug flow:

This flowchart addresses LED backlight issues. It includes checks for video pattern, 10-pin FFC connection, BFB1pin voltage, BR9.1 and BR7.1 status, and PWM signal on BR3. It also checks BUI status and backlight operation, guiding the user to identify defective components like BU1, BU2, or BR?. It also suggests reconnecting the 10-pin FFC or checking the DC adaptor.

5.3 Power debug flow:

This flowchart outlines power-related troubleshooting. It involves checking specific pin voltages for components U1, U2, U3, and BU2. If the voltage is not as expected, it indicates a defect in the respective component.

6. FRU (Field Replaceable Unit) List

The FRU list provides details of replaceable units for the Acer SA220Q monitor. It includes photos, SPL Category, Acer PN, Raken PN, and ODM Description for each part.