Explore Schematic diagrams and Jumper solutions for all charging problems related to Nokia 215-RM-1110 and 216-RM-1187. Explore Now Charging Ways.
The Nokia 215 (RM-1110 ) and 216 (RM-1187) are known for their simplicity and reliability. However, like any mobile device, they can face charging-related issues that hinder their functionality. Common charging problems include the phone not charging, battery percentage not increasing, or even error messages related to charging. This guide aims to address these common charging issues systematically, helping you troubleshoot and fix each problem step by step.
Understanding Common Charging Issues:
Before we dive into the specific repair steps, let’s examine some of the common charging problems you may encounter with the Nokia 215 and 216:
Not Charging, and the Display Shows "Battery Full": When the battery is not charging but the display indicates that it’s full, it often points to a communication or sensing error within the device.
Charging Error Message: If the device displays an error message when attempting to charge, it could indicate a fault with the charging IC or related components.
Charging Starts but Then Stops: The phone may begin charging but then stop unexpectedly, often due to voltage inconsistencies or component faults.
No Response to Power Source: The device doesn’t recognize the charger, which could be due to a faulty charging port or internal connection issues.
Battery Drains Quickly: If the battery level decreases rapidly, it could point to a charging or battery health issue.
Damaged Charging Port or Components: Physical damage to the charging port or components around it can also result in charging issues.
These issues may seem daunting, but with a step-by-step approach, you can identify and solve the underlying causes.
Nokia 215-RM-1110, 216-RM-1187 All Charging Problem Solution
Step-by-Step Troubleshooting Guide
1. Check the Charging Port and Connector
The charging port is one of the most common points of failure due to wear and tear or exposure to dust and moisture. Begin by inspecting the port closely.
Inspect for Physical Damage: Look for any visible damage, debris, or dirt. Clean the port carefully using compressed air or a soft brush.
Check Pin Connectivity: The Nokia 215 and 216 charging connectors have specific voltage readings for each pin:
Positive pin: 5V
BSI: Upto 1.5V
GND pin: 0V
Replace or Resolder: If the charging connector pins are loose or damaged, consider replacing the charging port or resoldering the loose connections.
Testing and possibly replacing the charging port can resolve issues where the phone doesn’t respond to the charger or displays a charging error.
2. Test the Battery and Battery Connector
Battery health plays a significant role in charging functionality. A damaged or aged battery can cause charging and power retention issues.
Check Battery Voltage: Use a multimeter to measure the voltage of the battery. Ideally, it should range between 3.7V and 4.2V. If the voltage is lower, the battery may be drained or defective.
Examine Battery Connector Pins: Inspect the battery connector for loose or corroded pins. Clean any corrosion with isopropyl alcohol, and ensure that all pins are firmly seated.
Inspect Battery BSI Line: The BSI (Battery Size Indicator) line includes a 1K resistor that communicates the battery level to the CPU. A faulty BSI resistor can result in charging errors or inaccurate battery level readings.
If the battery and connector are in good condition, proceed to inspect other components in the charging circuit.
3. Check the Charging Circuit Components
The charging circuit consists of various resistors, capacitors, and ICs that regulate the voltage and current flow. Malfunctioning components in this circuit can disrupt charging.
Check Voltage at Key Points: Use a multimeter to test the voltage at various points in the charging circuit. For instance, the feedback voltage to the CPU should be around 2.5V.
Inspect Charging Pathway Resistors: Ensure the resistors in the charging pathway have proper resistance values. For example:
7.5K ohm resistor
330K ohm resistor / 330 Ohm
39K ohm resistor / 39 Ohm
Test the Thermistor: The thermistor measures battery temperature and protects the phone from overheating. Test the thermistor’s resistance to ensure it’s within the expected range, typically between 10K and 100K ohms.
Replace any faulty components to ensure proper voltage regulation and safe charging.
4. Check the Charging IC
The charging IC is a critical component that controls power flow to the battery. A faulty charging IC can lead to issues like slow charging, no charging, or erratic behaviour.
Locate the Charging IC: Identify the charging IC on the mainboard. It’s usually positioned close to the charging connector.
Test for Continuity: Use a multimeter to check for continuity around the charging IC pins. If there’s a break in continuity, consider re-soldering the connections.
Replace the Charging IC if Necessary: If it shows signs of damage (like overheating marks) or fails to provide stable voltage, it’s best to replace it. Make sure to use an IC compatible with the Nokia 215 or 216.
Replacing the charging IC can often resolve issues where charging starts but stops or displays a charging error.
5. Inspect the CPU and Related Connections
In rare cases, charging issues can be traced back to the CPU (in this case, the MT6260 CPU). The CPU manages communication and power regulation, so issues with the CPU can cause display errors, charging problems, and more.
Test CPU Voltage Inputs: Measure the input voltage to the CPU to ensure it’s receiving the correct voltage (typically between 0.5V and 2.5V).
Check CPU Connections: If the CPU is not properly communicating with the charging circuit, it might have loose connections or require a reflow.
Reball or Replace CPU if Needed: If all else fails and the CPU appears to be at fault, reballing (resoldering the CPU to its connections) or replacing it might be necessary. This is an advanced step and should be done by someone with experience in micro-soldering.
CPU-related charging issues are uncommon, but if identified, they should be addressed carefully.
Other Tips for Troubleshooting and Maintaining Charging Functionality
Keep Charging Port Clean: Avoid dust and moisture accumulation in the charging port to prevent connectivity issues.
Use Compatible Chargers: Using a low-quality or incompatible charger can damage the charging IC or battery over time.
Check Software: Sometimes, software glitches can interfere with charging. If possible, update the phone’s firmware to ensure it’s running smoothly.
More Repair: