Lanrui M191 motherboard diagnostic clip
Lanrui M191 motherboard diagnostic clip
Lanrui M191 Motherboard Diagnostic Clip
Lanrui M191 is a universal service clip designed for powering up phones, tablets, and motherboards. It facilitates powering the device and helps quickly diagnose faults during service repairs.
The clip allows you to more conveniently check your phone's current without having to disassemble the motherboard. According to the manufacturer, it supports iPhones, Android devices, tablets, and iPads, including models that do not require encrypted battery communication.
The device has two operating modes: detection mode with indicator light and power-on/power-off mode. The indicator light can help detect unstable power supply current to the motherboard or restarts.
Lanrui M191 motherboard diagnostic clip
Lanrui M191 Universal Switch The Clip is a universal motherboard diagnostic clip designed for powering up phones, tablets, and motherboards. It facilitates powering the device and aids in diagnosing faults during service repairs.
Lanrui M191 – a universal clip for powering up phones, tablets, and motherboards.
The Lanrui M191 clip simplifies the device power-up process during diagnostics. Instead of performing time-consuming service procedures, you can quickly apply power to your phone, tablet, or motherboard and check the device's response.
This product is designed to power mobile phones, tablets, and motherboards and to aid in diagnosing faults. It is suitable for various repair scenarios and for inspecting used devices.
Key product features
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Lanrui M191 Universal Clip
Makes it easier to start devices during service diagnostics. The manufacturer describes it as a universal clip for phones, tablets, and motherboards.
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Easier testing of phone current
Allows you to more conveniently check your device's current without having to disassemble the motherboard.
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Non-encrypted communication series
According to the manufacturer's description, the device supports Android phones from the series that do not require encrypted battery communication.
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iPhone Model Support
This product supports use with the entire iPhone series.
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For Dual Battery Models and iPads
The clip supports booting various dual battery models without encrypted communication and use with iPads.

For Android phones – allows you to test the motherboard without the battery connected.
Product Applications
The Lanrui M191 is used to boot mobile phones, tablets, and motherboards. The clip helps supply power to the device and supports fault diagnosis during repairs.
The tool can be used in various service situations, including diagnosing motherboards, inspecting devices with damaged screens, and inspecting used equipment.

Supports various dual-battery models without encrypted communication and iPads.
Switching between two modes
The Lanrui M191 has two operating modes. The switch allows you to select detection mode or power on/off mode only.
| Mode 1: | When the switch is turned on, detection mode is activated. When the circuit starts operating, a small current of approximately 0.01A flows. If current is flowing, the indicator light illuminates, which helps in diagnosing the fault. |
| Mode 2: | When detection mode is disabled, only the power on/off function is available. The indicator light does not illuminate when current is flowing, and no microcurrent is present. This mode can be used to check if the motherboard is leaking power. |

Two operating modes: detection mode and power on/off mode.
Indicator Information
A flashing indicator light indicates unstable power supply to the motherboard or a restart. This feature can help diagnose motherboard faults in the event of a damaged screen.
This solution is suitable for various repair scenarios, as well as for inspecting and checking used devices.
Product Specifications
| Model: | Lanrui M191 |
| Product Name: | Universal Motherboards Battery Switch Clip |
| Application: | Starting phones, tablets, and motherboards and helping with diagnosis Faults |
| Operating Modes: | Detection Mode / Power On/Off Mode |
| Current in Detection Mode: | Approximately 0.01 A |
| Compatibility: | iPhone / Android / Tablet / iPad |
Package Contents
- 1× Switch Clip Lanrui M191
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