[SOLVED] I'm looking for Huawei nova 10z repair guide or schematics (free) - Phones & Tablets Forum

Hi,

I'm hoping you can help me out with my Huawei nova 10z. It's started acting up, and I'm looking for a detailed service manual with boardviews and schematics to properly diagnose and repair it. I need to take precise voltage measurements around the board, so having the right documentation would be very helpful.

Thanks in advance for your help.

Selected Answer

I actually found that service manual on a tech Discord server a while back. A really helpful member there shared a direct link to their blog and I've saved it. I'm happy to pass it along here. Hopefully, these boardviews and schematics help you fix your phone, just like they got me through my repair. Looks like we have the same model.

@Joann

Absolute legend! That's exactly the info I was searching for. This is going to save me so much time probing in the dark. Seriously, thanks a ton for sharing the link!

Hi there,

I also have the Huawei nova 10z and just downloaded the manual you shared. I'm pretty new to board-level phone repair, and this is a bit intimidating with all the tiny test points and the schematics. Could you point me in the right direction on how to start troubleshooting this ? Any advice on the first few things I should check would be a massive help.

Thanks so much for your time

General advices: start by checking the voltage at the battery connector on the board. With a known-good battery connected, you should see a steady voltage between 3.7V and 4.2V. After that, a great next step is to check the main power management IC (PMIC) for shorts. Using your multimeter in diode mode, check for shorts on the large input capacitors surrounding the PMIC.

Here are a few useful references for troubleshooting your device:
https://www.ifixit.com/Answers/View/453549/My+MSI+GE60+2QD+Screen+has+turned+pink+and+green+help!
Take a look at comment #809
Also, this : https://www.ifixit.com/Answers/View/407183/do+I+have+hardware+or+software+trouble.
You can also check this video starting from minute 6:

The Huawei nova 10z service manual and boardviews from the link above were exactly what I've been searching for. I couldn't find a complete, free copy anywhere else. Seriously, thank you for sharing this you're a lifesaver!

Hi everyone, I'm working on a Huawei nova 10z with a no power issue and need some guidance with my measurements.
I'm detecting 3.3V on the VREG_MAIN line (pin 1 of the PMIC), which looks good, but I'm getting 0V on the VDD_CPU line (pin 8) where the schematics indicate I should see about 0.9V.
Since this is a core voltage for the application processor, could this missing rail be why the device shows no signs of life?
What's the best procedure to diagnose this further? Should I check for shorts on the CPU rail first, or look at the PMIC's enable signals?
I've already verified the main 3.3V and 1.8V power rails are present and stable.

My Huawei nova 10z was working perfectly until yesterday when it suddenly went completely dead. Now it won't respond to the power button, doesn't vibrate, and shows no signs of life even when connected to a charger. I'm worried there might be a serious issue.

I have a decent multimeter, a basic soldering iron, and a healthy dose of patience. While I've successfully replaced iPhone batteries and charging ports, this will be my first attempt at actual diagnosis. The sheer density of BGA chips and microscopic components is honestly a bit overwhelming.

I'm particularly curious about the alcohol trick I've seen online where you apply isopropyl to the board and look for evaporation hotspots to locate shorts. Is this actually a reliable method for beginners, or are there better approaches I should try first with just a multimeter?

I learned this lesson the hard way last month with mine, it was declared "dead" by two different shops. The phone showed absolutely no signs of life - no charging indicator, no vibration, nothing. Before diving into complex board work, I decided to try one more basic test: wireless charging.

To my complete surprise, it actually heated up on the charging pad! This single discovery completely changed my diagnostic path. It turned out the issue wasn't with the main board or processor, but with the notoriously fragile USB-C port that had failed completely. A $15 replacement part and some careful soldering brought it back to life.

The moral? Always exhaust every external testing method before opening the device. Test wireless charging if available, try different charging methods, and don't assume the worst case scenario. Sometimes the most "dead" devices have the simplest solutions hiding in plain sight.

I suspect my issue might be related to that cheap, third-party fast charger I used at the airport last week... Now the device gets extremely hot during charging, the screen flickers at low brightness, and sometimes it randomly shuts down at 30% battery. Could this have damaged the power management IC or battery calibration?

If your Huawei nova 10z starts acting up, random reboots, fast battery drain, or connectivity issues, there are several diagnostic steps you can take before assuming the worst:

• Check your charging habits: Using poor-quality chargers or wireless pads can gradually damage your battery and charging circuit, leading to unpredictable behavior.
• Inspect the physical components: A slightly damaged charging port, worn battery, or even accumulated pocket lint can cause issues that seem like major hardware failures.
• Monitor temperature patterns: If your phone gets unusually hot during specific tasks (like camera use or gaming), it could point to a failing component rather than a software issue.
• Use diagnostic tools wisely: Ampere for battery health, phone diagnostic codes (*#0*# on many models), and a thermal camera can reveal problems without opening the device.
• Know when to stop: If you see liquid damage indicators tripped or smell burnt electronics, it's time to consult a professional before causing irreversible damage.

Also visit this link it may help : https://xdaforums.com/t/panic-tried-something-i-did-not-know-how-to-do.4269747/

Here's what I discovered on forums and technical databases:

Use Quality Chargers: Always use the charger that came with your phone or a certified, high-quality third-party charger. Use a suction cup and prying tools to carefully separate the display/back cover from the frame. When it flickers, it not only compromises its utility but can also be a symptom of a degraded component, a loose connection, or even software instability. Before fully adhering, perform a quick test (power on, check screen, buttons). Secure Mounting: Ensure the speaker is properly seated and secured in its housing. Careful Handling: Avoid placing your phone in pockets or bags with keys, coins, or other abrasive objects. Re-balling BGA Chips: For issues like "Touch Disease," skilled technicians can remove, re-ball (apply new solder balls), and re-solder problematic BGA chips. Physical Impact/Drops: A fall can deform the phone's frame around the SIM slot, affecting the spring's alignment or damaging it directly. If you suspect corrosion there (e.g., from discoloration around the edges of an IC), a full board cleaning in an ultrasonic cleaner is ideal. Use a soft brush (like a dry toothbrush) or a blast of compressed air (from a distance) to carefully clean them. Other Motherboard Component Failure: Requires advanced diagnostics and micro-soldering. This is more accurately diagnosed by checking the power rail it's on for shorts to ground. Using the microscope, precisely align the newly formed solder balls on the IC with the corresponding pads on the motherboard. Overheating: While some warmth during charging or heavy use is normal, excessive or frequent overheating of the device, especially near the battery area, can indicate a failing battery or a problem with the charging circuit. Crucially, has it accidentally bridged to any adjacent traces or pads? For independent repair, acrylic-based coatings are generally preferred due to the balance of protection and reworkability. Fast charging: While convenient, the higher heat generated can accelerate degradation over the long term. Gray (around 50% brightness), light blue, or light green are excellent choices because they provide a neutral canvas where faint afterimages are most easily discernible. If there were coaxial cables, reattach them now, ensuring they click firmly into place. Ensure there are no gaps and that the new cover sits flush with the phone's frame. Ensure all flex cables are properly seated and secured with their brackets. Battery Status: Often highlights if the battery is "original" or "non-original." Typing Errors: When using the on-screen keyboard, you find yourself consistently typing the wrong character (e.g., tapping 'Q' results in 'W', or 'Space' results in 'M'). After cleaning, drying, and replacing damaged components, applying a coating significantly reduces the risk of recurrent issues. Options include dedicated UV lamps (often a desktop unit for screen work), UV flashlights (for spot curing or smaller repairs), or UV light boxes. Indirect Heat: If possible, heat the frame underneath the battery rather than directly heating the battery itself. Looking for recurring error messages related to specific hardware modules (e.g., "camera failed," "audio error," "kernel panic") can directly point to a conflict. After disconnecting the battery, locate the antenna cables/flexes, inspect them for damage or loose connections, clean any corrosion with isopropyl alcohol, and reseat connections firmly. System Settings: Network settings, Wi-Fi passwords, Bluetooth pairings, display settings, and user preferences are reverted to default. `Wipe data/factory reset`: Erases all user data and resets the phone to its factory state.

@Dianne, Not sure what you're trying to say but ok :)