DORO LEVA E21 (02) PDF Document

Self-service repair is not recommended unless you have the necessary technical knowledge and experience to safely handle electronic components. Attempting repairs without proper expertise can result in damage to the device, personal injury, or voiding of any applicable warranty.

By choosing to proceed with a self-repair, you acknowledge and accept all risks and responsibilities associated with the process.

Opening or repairing a device could cause electric shock, device damage, fire, personal injury risks, and other hazards.

• Make sure that the work surface is clean and free of debris to prevent contamination of internal components.

• Wear an ESD wrist strap to prevent electrostatic discharge damage to sensitive electronic components.

• Always perform repairs in a clean, dry space with good ventilation and no combustible materials.

• Make sure no cables or components are damaged during removal. Damaged cables and components must be replaced.

• Ensure that there are no additional screws or small parts left in the device after assembly.

• Always ensure that screws are securely fastened.

• Disconnect the device from all power sources before any disassembly.

Batteries should be handled with care, and could be dangerous if not in normal condition.

• Discharge the battery before you attempt repair.

• Never bend, dent, puncture, or use tools to pry the battery.

• To prevent damage, store replaced batteries in the replacement packaging directly after being replaced.

• If the battery shows signs of swelling or damage, or if the device feels hot or emits a strong odour, don’t attempt disassembly.

• If a battery starts to vent, cover it in sand or use gloves and pliers to dispose the battery in a fire safe container as soon as possible.

• Be careful with the following unacceptable battery conditions: pouch damage, line protrusion, scratch, contamination mark, dot protrusion, dent, bubbling, imprinted line, swelling or electrolyte leakage.

• Do not shortcut the battery terminals or damage the battery, as it could result in fire or overheating.

• Do not throw the old battery in regular trash. Dispose of the battery according to local regulations.

• Wear protective gloves and safety glasses when you handle broken glass parts.

• Apply protective film when you remove damaged glass parts.

• Place the damaged glass part in the spare part packaging directly after replacement to prevent injury.

Separating the top and bottom halves is difficult, do not do it unless necessary. This task is not required for most repairs, even if pictures display the cabinets as separated. Separation is only needed to replace:

• The Hinge φ5.8

• The Clamshell assembly

• The Main FPC

• The C-cover

Tools

Materials

Main PCB

A. FPC Link connector

B. Audio Jack 3.5 mm

C. USB-C connector

D. Battery connector

E. SOS FPC connector

F. Speaker Pad

Sub PCB

A. Camera connector

B. LCD connector

C. FPC Link connector

D. Battery connector

E. Motor pad

Before performing any repair, the device must be turned off to prevent damage to internal components and to ensure safety during disassembly.

Turn on the phone

1. Press and hold the end call button until the display lights up.

Turn off the phone

1. Press and hold the end call button.

2. Press OK to turn off the phone.

This procedure explains how to replace the Battery LEVA DBAE-1150A.

Prerequisites: Disassemble the Battery cover.

Safety and precautions:

• Do not puncture or bend the Battery LEVA DBAE-1150A.

• Do not throw the old battery in regular trash. Recycle it according to local regulations for electronic waste and batteries.

Step-by-step instructions

Remove the Battery LEVA DBAE-1150A

1. Insert your finger into the notch below the Battery LEVA DBAE-1150A.

2. Push the Battery LEVA DBAE-1150A outward, then lift it out.

Note: You can now access the SIM card slot. To remove the SIM card, slide it sideways out of the slot. To install a new SIM card, slide it into the empty slot.

Install a new battery

1. Align the Battery LEVA DBAE-1150A with its compartment, with the contacts facing inward.

2. Slide the Battery LEVA DBAE-1150A into place.

Reassembly reference: Assemble the Battery cover.

Replace the Main LCD 2.8 if it is cracked, unresponsive, or has display issues such as dead pixels or backlight failure.

Prerequisites:

• Disassemble the Battery cover.

• Disassemble the Battery LEVA DBAE-1150A.

• Disassemble the top half of the device.

Tools and equipment: Tweezers, Plectrum.

Safety and precautions:

• Avoid touching the display surface to prevent smudges or damage.

Step-by-step instructions

Remove the Main LCD 2.8

1. Open the ZIF connector that holds the LCD flex cable in place. Use Tweezers.

2. Disconnect the flex cable and feed it through the opening to the other side.

3. Separate the Main LCD 2.8 from the SUB PCB using a Plectrum.

Install the new Main LCD 2.8

1. Place the Main LCD 2.8 on the SUB PCB. Make sure to align the screen with the locator lines.

2. Feed the flex cable through the opening to the other side of the SUB PCB and connect it to the ZIF connector. Align the white line on the cable with the edge of the connector to ensure correct insertion depth. Use Tweezers.

3. Close the ZIF-connector.

Reassembly reference:

• Assemble the top half of the device.

• Assemble the Battery LEVA DBAE-1150A.

• Assemble the Battery cover.

Removing the Battery cover is typically the first step in disassembling the phone. It allows access to the Battery LEVA DBAE-1150A, SIM card, and internal screws.

Tools: Plectrum

Safety and precautions:

• Do not insert the tool too deep to avoid scratching internal components.

• Avoid forcing the cover to prevent breaking plastic clips.

Pre-removal checklist:

• Turn off the phone.

• Disconnect from charger or any peripherals.

Step-by-step instructions:

1. Turn the phone so that the back side faces up.

2. Locate the notch on the left side of the phone.

3. Insert a Plectrum into the notch and gently slide it along the edges to lift the Battery cover.

After-removal checks: Check that no clips are broken.

Troubleshooting tips: If the Battery cover is hard to remove, make sure you are using the notch on the left side of the phone. Slide the Plectrum gently along the edge.

Removing the Battery LEVA DBAE-1150A is necessary to safely continue with internal repairs. It disconnects the power source and prevents short circuits or electrical damage.

Safety and precautions:

• Do not puncture or bend the Battery LEVA DBAE-1150A.

• Avoid contact with the battery terminals.

Pre-removal checklist:

• Turn off the phone.

• Disassemble the Battery cover.

Step-by-step instructions:

1. Insert your finger into the notch below the Battery LEVA DBAE-1150A.

2. Push the Battery LEVA DBAE-1150A outward, then lift it out.

Note: You can now access the SIM card, if one is installed. To remove the SIM card, slide it sideways into the battery compartment.

After-removal checks:

• Make sure the battery compartment is clean and undamaged.

• Check the Battery LEVA DBAE-1150A for any signs of swelling or damage.

Removing the Lower housing assembly is required to access and replace internal components.

Tools: Plectrum, Screwdriver

Safety and precautions:

• Do not use metal tools to pry open the housing, as they may damage the casing or internal components.

• Avoid applying excessive force that could crack the plastic.

Pre-removal checklist:

• Turn off the phone.

• Disassemble the Battery cover.

• Disassemble the Battery LEVA DBAE-1150A.

Step-by-step instructions:

1. Remove the seven (7) Screw T1.4*3.5.

2. Insert the Plectrum at the bottom of the device and gently pry open the Lower housing assembly. Start at the bottom, continue along the sides, and work your way around.

3. Remove the Lower housing assembly.

After-removal checks: Inspect the Lower housing assembly for cracks or damage.

Troubleshooting tips: If the screws are hard to remove, use the correct screwdriver size and apply downward pressure while turning.

Removing the PCBA assembly HW3011 is necessary to access internal components for repair or replacement.

Tools: Tweezers

Safety and precautions: Avoid touching components directly.

Pre-removal checklist:

• Disassemble the Battery cover.

• Disassemble the Battery LEVA DBAE-1150A.

• Disassemble the Lower housing assembly.

Step-by-step instructions:

1. Disconnect the FPC_LINK_SF28A_GF28A1_6L_HOLE_V01A using Tweezers.

2. Grip the edge of the PCBA assembly HW3011 and lift it gently.

This section is for technicians and repair professionals only. You can retrieve diagnostic information by running a failure analysis on the device.

To run the failure analysis tool:

1. Press *#15963# .

2. Select Item test to test a specific function or component, then follow the on-screen instructions.

Press Return to exit the tool.