[SOLVED] I'm looking for Acer Iconia Tab P11 repair guide or schematics (free) - Phones & Tablets Forum

Hi,

I'm hoping you can help me out with my Acer Iconia Tab P11. 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.

@Felicia

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 Acer Iconia Tab P11 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/820970/My+phone+is+not+connect+to+the+pc+with+wire
Take a look at comment #1229
Also, this : https://xdaforums.com/t/usb-problems-newbie-pls-help-me-out-progress-please-take-a-look.321039/.
You can also check this video starting from minute 5:

The Acer Iconia Tab P11 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 Acer Iconia Tab P11 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 Acer Iconia Tab P11 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 Acer Iconia Tab P11 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://www.ifixit.com/Guide/Heyday+Suitcase+Turntable+Platter+Replacement/155324

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

Lifting Pads: Prying or using excessive force while the solder is not fully molten can lift the ground pads the shield is soldered to, severely damaging the board. Disconnect Connectors: Carefully use a plastic spudger to pry up any ZIF or snap connectors that attach the power button flex cable to the motherboard or other daughterboards. Factory Reset: As a last resort on the software front, back up your data and perform a factory reset. Re-evaluate Custom ROMs: If a custom ROM is causing issues, try a different, more stable version, or revert to stock firmware. Cash Flow Optimization: Reduces capital tied up in slow-moving or excess inventory, freeing funds for other business needs. Look for discolored areas, which might indicate overheating or liquid damage. Solder Wire: Very thin, high-quality leaded (for easier work) or lead-free solder. Smartphone displays need a flexible, strong bond that can withstand minor impacts and thermal expansion/contraction. Clean Pads: Use solder wick and a soldering iron (or low-temperature hot air with leaded solder if converting) to carefully clean all residual solder from the motherboard pads. The necessary tools for a front housing replacement include a heat gun or iOpener to loosen adhesive, various prying tools (plastic spudgers, metal pry tools), a set of precision screwdrivers (Phillips, Pentalobe, Tri-wing, etc., depending on the phone model), a suction cup for screen removal, fine-tip tweezers, and new adhesive strips for reassembling the screen and battery. These include the kernel (the core of the OS), system libraries, framework files, bootloader components, and various configuration files. If the signal issue disappears, the interference is environmental in your original location. Micro-soldering (Advanced): If the faulty component is a tiny IC, capacitor, or resistor on the logic board (e.g., PMIC, charging IC, a shorted capacitor), it requires specialized micro-soldering tools and expertise. Reinstall external screws: Fasten the pentalobe or Phillips screws near the charging port. Work slowly and carefully, constantly monitoring for any signs of resistance or changes in the battery's shape. Do Not Disturb/Silent Mode: Ensure your phone isn't in a mode that intentionally disables vibrations (e.g., Silent Mode with "Vibrate on Silent" turned off, or Do Not Disturb settings that override vibration preferences). Flex Cable Damage: Many Wi-Fi antennas are connected via small, fragile flex cables. If you plan to keep the phone, install a high-quality, reputable replacement battery. Use cloud services, connect to a computer, or use an external drive for a thorough backup. High heat can melt or permanently damage this adhesive, leading to bubbles, dead spots, or complete delamination, making the screen unusable. Packaging: Regular plastic bags, bubble wrap, and foam are often static-generating. Attempting this repair will void your phone's warranty and carries the risk of damaging other components. Backup Data: Always back up your important data regularly, especially before attempting any major software changes. Antenna continuity is a fundamental aspect of smartphone functionality, directly impacting its ability to connect to cellular networks, Wi-Fi, Bluetooth, and GPS. Remove Loudspeaker Module: Once all screws and flex cables are disconnected, carefully lift out the entire loudspeaker module. Always proceed with caution, especially around the battery, to ensure a safe and successful repair.### 8. Speakers, Vibrator Motor, Antenna Modules: Install them and secure with screws or adhesive. Test the Dongle: Plug the suspected dongle into another compatible smartphone or device (e.g., a laptop with a USB-C port). Place the positive probe on the positive terminal of the battery connector on the motherboard and the negative probe on a known ground point (e.g., a screw hole or metal shield). In Safe Mode, only essential system apps are loaded, disabling all third-party applications.

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