Teaching Nano Blackboard

Lcd led digital intelligent 4k touch screen interactive panel whiteboard nano smart classroom blackboard

teaching nano blackboard-9

Price: 800

Lcd led digital intelligent 4k touch screen interactive panel whiteboard nano smart classroom blackboard

Lcd led digital intelligent 4k touch screen interactive panel whiteboard nano smart classroom blackboard

Lcd led digital intelligent 4k touch screen interactive panel whiteboard nano smart classroom blackboard

Lcd led digital intelligent 4k touch screen interactive panel whiteboard nano smart classroom blackboard

Lcd led digital intelligent 4k touch screen interactive panel whiteboard nano smart classroom blackboard

Lcd led digital intelligent 4k touch screen interactive panel whiteboard nano smart classroom blackboard

Lcd led digital intelligent 4k touch screen interactive panel whiteboard nano smart classroom blackboard

Lcd led digital intelligent 4k touch screen interactive panel whiteboard nano smart classroom blackboard

Lcd led digital intelligent 4k touch screen interactive panel whiteboard nano smart classroom blackboard

Troubleshooting & Maintenance: Solutions for Touch Failure & System Switching Issues
1. Touch Malfunction Diagnosis
1.1 Basic Checks
Step 1: Verify screen protector compatibility (OEM recommended)
Step 2: Check stylus battery (green LED = normal)
Step 3: Hard reboot (hold power 10s)
1.2 Advanced Diagnostics

Symptom	Possible Cause	Solution
Dead zones	Capacitive grid damage	25-point calibration → Replace
Stylus works/finger fails	Palm rejection enabled	Settings → Touch → Disable "Palm Rejection"
Intermittent touch	2.4GHz interference	Switch to 5GHz WiFi

1.3 Calibration Procedure

1）.Engineering mode: Hold "Vol+" + "Home" for 5s

2）.Select "25-point calibration"

3）.Tap marked points with OEM stylus

4）.Reboot after saving (≈3 mins)

2. OS Switching Failures

2.1 Error Codes

E-101: OPS not detected → Reinsert module + check 12V power

E-205: System file conflict → Use recovery USB (from manufacturer)

E-308: Timeout → Update BIOS to V2.1.5+

2.2 Data Sync Issues

Symptom: Windows files invisible in Android

Fix:

1.Confirm shared partition is NTFS

2.Check "FileBridge" service status in Android

3.Remount: adb shell mount -t ntfs /dev/sda4 /mnt/share

3. Hardware Maintenance

3.1 Routine Care

Cleaning:

Screen: Microfiber cloth daily

Vents: Compressed air weekly

Environment:

Temperature: 10℃-35℃ (auto-protection triggers beyond)

Humidity: 30%-70%RH (anti-condensation)

3.2 Parts Replacement

Component	Lifespan	Replacement Guide
Stylus tip	500k clicks	Twist counterclockwise → Snap new tip
Cooling fan	3yrs/20k hours	Professional service required
Battery	5yrs	Contact authorized service

4. Software Troubleshooting

4.1 System Lag

Quick fix: Three-finger swipe down → End task

Permanent solution:

1.Safe mode (press F8 repeatedly at boot)

2.Run sfc /scannow

3.Reset virtual memory: 1.5-2× physical RAM

4.2 Driver Conflicts

Touch driver: Download latest from official support page

GPU driver: Disable Windows auto-update, use OEM drivers

5. Emergency Recovery

5.1 System Crash

1.Insert recovery USB (pre-made)

2.Press F12 for boot menu

3.Select "Quick Repair" (keeps user data)

5.2 Cloud Recovery

Requirement: Active internet connection

Steps:

1.Settings → System → Advanced recovery → Cloud reset

2.Enter device serial number

3.Download latest OS image (≈20 mins)

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