DL400 Pro LCD Tester Instruction Manual

1. Introduction

The DL400 Pro is a smart screen tester designed for comprehensive testing and repair of LCD displays and touch functionality across a wide range of mobile devices. It features a large 2.8-inch folding touch screen, automatic cable identification, and support for True Tone recovery. This manual provides detailed instructions for setting up, operating, and maintaining your DL400 Pro device.

2. Safety Information

• Always handle the device and test cables with care to prevent damage.
• Ensure the device is powered off before connecting or disconnecting any test cables.
• Avoid exposing the device to extreme temperatures, moisture, or direct sunlight.
• Do not attempt to disassemble or modify the device, as this will void the warranty and may cause damage.
• Keep the device away from children.

3. Package Contents

The DL400 Pro LCD Tester package typically includes:

• DL400 Pro Host Unit
• Test Cables (specific to selected kit, e.g., iPhone Cable, SX Cable, HW Cable, EDP board)
• USB Cable (Type-C)
• User Manual (this document)

4. Product Overview

The DL400 Pro is a versatile tool for mobile phone screen testing and repair. Key features include:

• Wide Compatibility: Supports iPhone, iWatch, iPad, Huawei, Oppo, Vivo, Xiaomi, and Samsung devices.
• 2.8-inch Folding Touch Screen: Provides a clear and interactive interface for testing.
• Automatic Cable Identification: No manual switching required between different test systems.
• Comprehensive Testing: Tests display, touch, and current consumption.
• True Tone Recovery: Supports True Tone recovery for various iPhone models (EEPRO method for X-11, Driver IC method for 12-13 series).
• Extended Battery Repair Flex: Can be used to modify battery data (capacity, cycle count).

Supported Models:

The DL400 Pro supports a wide range of models. Below are examples for iPhone and Samsung:

iPhone Series (31 PCS)

Samsung Series (48 PCS for 68 models)

5. Specifications

6. Setup

6.1 Powering On/Off

• To Power On: Long press the 'ON/OFF' key on the right side of the device.
• To Power Off: Long press the 'ON/OFF' key.

6.2 Language Selection

From the main interface, tap 'Language' to switch between English and Chinese.

6.3 Test Mode Selection

Tap 'Test Mode' to choose from three available modes:

• Touch + Display: Tests both touch and display functions.
• Only Touch: Focuses solely on touch screen responsiveness.
• FOG Mode: (Functionality not detailed, likely for specific display types or advanced testing).

6.4 Connecting Test Cables

Carefully connect the appropriate test cable for the device you intend to test to the designated port on the DL400 Pro. The device will automatically identify the cable.

7. Operating Instructions

7.1 Basic Screen Testing

• Activating the Test Screen: Single-tap the small screen on the DL400 Pro to light up the connected test screen.
• Adjusting Brightness: Slide your finger up or down on the left side of the DL400 Pro's small screen to adjust the brightness of the test screen.
• Changing Test Pages: Slide your finger up or down on the right side of the DL400 Pro's small screen to cycle through different test patterns (e.g., solid colors, grid patterns).
• Touch Test: In the touch test interface, draw lines on the connected test screen. The lines will simultaneously appear on the DL400 Pro's small screen. Tap 'Clear' on the small screen to erase the drawn lines.
• Turning Off Test Screen: Double-tap the small screen on the DL400 Pro to turn off the connected test screen.

7.2 True Tone Recovery

Slide left from the main interface to access the True Tone recovery page. Here you can perform True Tone recovery functions. The method used depends on the iPhone model (EEPRO for X-11, Driver IC for 12-13 series).

7.3 System Settings

Slide left from the True Tone recovery page to enter the system settings interface. Here you can:

• Enable/disable 'Auto Next Page' for automatic cycling through test screens.
• Modify test screen content.
• Access user guides and device information ('About Testbox').

7.4 Extended Battery Repair Flex Cables

The DL400 Pro supports extended battery repair flex cables to modify battery data such as capacity and cycle count. This functionality allows for greater flexibility and improved performance. Detailed instructions for using these flex cables are typically provided in a separate video or advanced guide.

8. Maintenance

• Keep the device clean by wiping it with a soft, dry cloth.
• Avoid using harsh chemicals or abrasive materials for cleaning.
• Store the device in a cool, dry place when not in use.
• Regularly check test cables for any signs of wear or damage and replace them if necessary.
• Ensure the charging port is free from dust and debris.

9. Troubleshooting

• Device not powering on: Ensure the battery is charged. Connect the device to a power source using the provided USB-C cable.
• Test screen not lighting up: Check if the test cable is securely connected. Ensure the DL400 Pro is powered on and the test screen is activated by a single tap.
• Touch function not responding: Verify the test mode is set to 'Touch + Display' or 'Only Touch'. Check for any physical damage to the test screen or cable.
• Incorrect readings or erratic behavior: Ensure the device's software is up to date. Refer to the system settings for software version information.

10. User Tips

• For iPhone 14 Pro Max and iPhone 15 series, ensure you have the correct and updated flex cables for full compatibility.
• Regularly check for software updates to ensure optimal performance and compatibility with the latest device models.
• When performing True Tone recovery, double-check the method required for the specific iPhone model to avoid issues.

11. Warranty and Support

For warranty information and technical support, please refer to the manufacturer's official website or contact your retailer. Keep your purchase receipt as proof of purchase.