Sources and use
Use the linked official instructions for your exact model and installed software. Our checklists organize observable symptoms and service preparation; they do not certify a repair.
Copy is original and AI-assisted. Manufacturer documents support the steps and model limits. The 20 device diagrams are original schematics, with no copied manual images or pages. Dates below identify when a source was checked.
iFixit is an independent comparison resource. Its CC BY-NC-SA 3.0 content license includes a noncommercial restriction. We do not reproduce its guide text or photos.
- iPhone 13 technical specifications
External Buttons and Connectors; Power and Battery · Checked 2026-10-13
Lightning, physical controls and wireless charging applicability
Reference only. Bounded original paraphrase and original schematics; no copied support images or pages. - Identify your iPhone model
Find the model name / iPhone 13 · Checked 2026-10-04
Model confirmation
Reference only. Original paraphrase; no copied images or manual pages. - If your iPhone will not charge
If your device will not charge, steps 1–8 · Checked 2026-10-13
External power checks and two 30-minute charging intervals
Reference only. Bounded original paraphrase and original schematics; no copied support images or pages. - Liquid detection on iPhone
If your iPhone or accessory is wet; If your iPhone and accessory are not wet · Checked 2026-10-13
Drying intervals and accessory-specific persistent alerts
Reference only. Bounded original paraphrase and original schematics; no copied support images or pages. - Screen not working on iPhone
If your screen is too sensitive or responds intermittently · Checked 2026-10-13
Dry screen, restart and accessory/cover comparisons
Reference only. Bounded original paraphrase and original schematics; no copied support images or pages. - No sound or distorted iPhone speaker
Troubleshoot your speaker, steps 1–7 · Checked 2026-10-13
Silent switch, Focus, speaker openings, ringtone and call comparisons
Reference only. Bounded original paraphrase and original schematics; no copied support images or pages. - Prepare iPhone for a service appointment
Get ready; Bring in; Get back from service · Checked 2026-10-13
Backup, OS-specific service readiness, credential privacy and returned-device data
Reference only. Bounded original paraphrase and original schematics; no copied support images or pages. - Back up iPhone
Back up using iCloud; Manage iCloud storage; Back up using your Mac · Checked 2026-10-13
Backup completion, coverage and local encryption
Reference only. Bounded original paraphrase and original schematics; no copied support images or pages. - iPhone temperature management
Device gets too warm; Charging On Hold; Temperature warning · Checked 2026-10-13
Cooling and temperature-related charging/display restrictions
Reference only. Bounded original paraphrase and original schematics; no copied support images or pages. - Pixel 7 safety and regulatory guide
Safety warnings; Repair and service; Charging · Checked 2026-10-13
Model-specific damaged-device and charging safety
Reference only. Bounded original paraphrase and original schematics; no copied support images or pages. - Pixel will not charge or turn on
Charger/cable/outlet; Charge for 10 minutes; Troubleshoot screen · Checked 2026-10-13
Power-path comparison, low-charge wait and 35-second screen check
Reference only. Bounded original paraphrase and original schematics; no copied support images or pages. - Fix Pixel battery drain
Battery diagnostics; Battery usage; Updates; Still have issues · Checked 2026-10-13
App-use review, optimization and post-update context
Reference only. Bounded original paraphrase and original schematics; no copied support images or pages. - Fix Pixel Camera app
General troubleshooting steps 1–3; Selfie camera; Shutter delay · Checked 2026-10-13
Cache-only cleanup, camera comparisons and lighting
Reference only. Bounded original paraphrase and original schematics; no copied support images or pages. - Fix Pixel Bluetooth problems
Bluetooth basics; Cannot hear music; Cannot make or get calls · Checked 2026-10-13
Connected versus saved, media and phone audio profiles
Reference only. Bounded original paraphrase and original schematics; no copied support images or pages. - Use Pixel Repair Mode
Learn how it works; Access; Exit · Checked 2026-10-13
Android 14 December 2023+, 2 GB, backups, possible reset and credential privacy
Reference only. Bounded original paraphrase and original schematics; no copied support images or pages. - MacBook Air (M1, 2020) technical specifications
Charging and Expansion / Display Support · Checked 2026-10-13
Two USB-C Thunderbolt/USB4 ports and one native external display up to 6K at 60 Hz
Reference only. Original paraphrase and observation worksheets; no copied images or manual pages. - Identify MacBook Air model
Find model / MacBook Air M1 2020 · Checked 2026-10-04
Model and chip confirmation
Reference only. Original paraphrase; no copied images or manual pages. - Use Apple Diagnostics to test your Mac
Prepare / Apple silicon / Run Apple Diagnostics / Results · Checked 2026-10-13
M1 Options then Command-D; Tahoe 26+ selected tests versus earlier automatic testing; preserve reference code
Reference only. Original paraphrase and observation worksheets; no copied images or manual pages. - If your Mac battery will not charge
Check the software / Check the hardware · Checked 2026-10-13
Compatible charging equipment, recognition/load comparison and Apple silicon restart
Reference only. Original paraphrase and observation worksheets; no copied images or manual pages. - Start up your Mac in safe mode
Apple silicon / Verify safe mode · Checked 2026-10-13
M1 power, startup volume, Shift + Continue in Safe Mode and Boot Mode verification
Reference only. Original paraphrase and observation worksheets; no copied images or manual pages. - Mac cannot connect to the internet over Wi-Fi
Connection / Date and time / Diagnostics / Different network · Checked 2026-10-13
Association versus internet, permitted network comparison and Wireless Diagnostics
Reference only. Original paraphrase and observation worksheets; no copied images or manual pages. - External display dark or low resolution
Connections / Support limits / Detection / Accessory permission · Checked 2026-10-13
Direct video path, Detect Displays and detection versus image
Reference only. Original paraphrase and observation worksheets; no copied images or manual pages. - USB Devices Disabled on Mac
Troubleshooting list · Checked 2026-10-13
Other port, direct accessory and documented self-powered hub supply
Reference only. Original paraphrase and observation worksheets; no copied images or manual pages. - Mac does not respond to key presses
Built-in keyboard / Other keys · Checked 2026-10-13
Low battery, Slow Keys, Mouse Keys and input layout
Reference only. Original paraphrase and observation worksheets; no copied images or manual pages. - No sound from Mac speakers
Opening / Built-in speakers / External outputs · Checked 2026-10-13
App volume, local source and selected built-in output
Reference only. Original paraphrase and observation worksheets; no copied images or manual pages. - How to back up your Mac
Time Machine / iCloud / Other backup methods · Checked 2026-10-13
Backup methods and data recovery purpose; original sample/coverage worksheet
Reference only. Original paraphrase and observation worksheets; no copied images or manual pages. - Mac starts up to a blank screen
Turn off and on / Recovery / Service · Checked 2026-10-13
Up-to-10-second power action and service routing; this worksheet excludes disk/firmware operations
Reference only. Original paraphrase and observation worksheets; no copied images or manual pages. - ThinkPad T14 Gen 2 user guide
Printed pp. 1–5, 9–14, 16–19, 23–25, 27–33, 62, 65–67 · Checked 2026-10-13
Existing local official PDF/text reviewed for Intel layout, optional hardware, controls, Vantage, power and support
Reference only. Original paraphrase and observation worksheets; no copied images or manual pages. - Back up your BitLocker recovery key
Recovery key purpose / Backup methods · Checked 2026-10-13
Owner/IT recovery availability before hardware service; no key input
Reference only. Original paraphrase and observation worksheets; no copied images or manual pages. - Recovery options in Windows
Before recovery: back up data · Checked 2026-10-13
Backup before data-affecting work; original non-destructive sample check
Reference only. Original paraphrase and observation worksheets; no copied images or manual pages. - Important safety information for iPhone
Handling; Repairing; Battery; Charging · Checked 2026-10-13
Stop use for suspected damage and use trained battery service
Reference only. Bounded original paraphrase and original schematics; no copied support images or pages. - How to wirelessly charge your iPhone
Charge wirelessly; Learn more · Checked 2026-10-13
Qi setup, centering, cases, metal and USB precedence
Reference only. Bounded original paraphrase and original schematics; no copied support images or pages. - If your iPhone will not turn on or the screen is black
Force your iPhone with Face ID to restart · Checked 2026-10-13
iPhone 13 button sequence and black-screen charge intervals
Reference only. Bounded original paraphrase and original schematics; no copied support images or pages. - Restart your iPhone
iPhone X, 11, 12, 13 or later · Checked 2026-10-13
Normal shutdown and restart when touch works
Reference only. Bounded original paraphrase and original schematics; no copied support images or pages. - If you cannot connect to Wi-Fi on iPhone
Check Wi-Fi settings; Verify router; Get more help · Checked 2026-10-13
Association versus internet and device/network comparisons
Reference only. Bounded original paraphrase and original schematics; no copied support images or pages. - If the microphones on your iPhone are not working
Phone calls; Speakerphone; Specific app · Checked 2026-10-13
Voice Memos, two camera recordings and microphone permissions
Reference only. Bounded original paraphrase and original schematics; no copied support images or pages. - If the camera or flash on your iPhone is not working
Remove case/accessory/film; More steps; Get service · Checked 2026-10-13
Front/rear camera and flashlight comparisons
Reference only. Bounded original paraphrase and original schematics; no copied support images or pages. - Pixel phone hardware diagram
Pixel 7 · Checked 2026-10-13
External power/volume controls and USB-C port
Reference only. Bounded original paraphrase and original schematics; no copied support images or pages. - Charge your Pixel phone
Wireless charging on Pixel 9a and earlier; Charging tips · Checked 2026-10-13
Pixel 7 Qi 1.x or compatible Pixel Stand and unobstructed charging
Reference only. Bounded original paraphrase and original schematics; no copied support images or pages. - Turn your Pixel phone on and off
Pixel 6 and later; Restart · Checked 2026-10-13
Power plus Volume up for Pixel 7 normal power menu
Reference only. Bounded original paraphrase and original schematics; no copied support images or pages. - Find problem apps with safe mode
Restart in safe mode; Check problem; Exit · Checked 2026-10-13
Pixel 6-and-later entry, automatic Airplane mode and normal restart
Reference only. Bounded original paraphrase and original schematics; no copied support images or pages. - Fix Pixel Wi-Fi connection problems
Check settings; Identify connection issue; Problem apps · Checked 2026-10-13
Phone versus network/internet comparison; excludes Pixel 11-only diagnostics
Reference only. Bounded original paraphrase and original schematics; no copied support images or pages. - Fix touch and response issues on Pixel
Check screen; Pixel 8a and earlier · Checked 2026-10-13
Screen protector mode and app-specific touch comparison; excludes Pixel 9 diagnostics
Reference only. Bounded original paraphrase and original schematics; no copied support images or pages. - Back up or restore data on Pixel
Automatically back up; Backup details; Last backup date · Checked 2026-10-13
Device backup versus separately synced photos/video/contacts
Reference only. Bounded original paraphrase and original schematics; no copied support images or pages. - Help keep Pixel from getting too warm
Temperature; How phone protects itself; Too hot · Checked 2026-10-13
Cool-down response and recurring shutdown escalation
Reference only. Bounded original paraphrase and original schematics; no copied support images or pages. - Important safety information for your Mac
Handling / Built-in battery / Charging · Checked 2026-10-13
General damaged-equipment and moisture safety only; M1-specific connections are sourced from mac-spec
Reference only. Original paraphrase and observation worksheets; no copied images or manual pages. - Mac sleeps or wakes unexpectedly
Check sleep settings / Network access / Sharing / Activity / Something else is waking your Mac · Checked 2026-10-13
Sleep/wake settings, background activity and peripheral comparison
Reference only. Original paraphrase and observation worksheets; no copied images or manual pages. - Get your Mac ready for service
Make a backup / Arrange service / Check settings · Checked 2026-10-13
Data may be erased or storage replaced; actual-OS service requirements; original post-service acceptance worksheet
Reference only. Original paraphrase and observation worksheets; no copied images or manual pages. - Windows camera, microphone and privacy
Windows 11 / Windows 10 → control camera and microphone access · Checked 2026-10-13
OS-specific permission paths, desktop-app controls and privacy limitations
Reference only. Original paraphrase and observation worksheets; no copied images or manual pages. - Shut down, sleep or hibernate your PC
Windows 11 / Windows 10 → Sleep · Checked 2026-10-13
Sleep command, configured lid/power behavior and manufacturer-dependent resume
Reference only. Original paraphrase and observation worksheets; no copied images or manual pages. - Set up and test microphones in Windows
Select Input / Test an installed microphone · Checked 2026-10-13
Selected input and local Windows test; use installed-version controls
Reference only. Original paraphrase and observation worksheets; no copied images or manual pages.