Samsung SM-F711B Service Manual page 140

6-1. Display
6-1-2. Bit defect (Horizontal line)
1) Symptom
- Description : Bit defect(Horizontal line) after power on.
2) Defect Decision Conditions
- Even if the screen changes or the device reboots, the bit failure phenomenon remains.
3) Repair Guide
- Caution : First of all, check if there is any damage of external impact on the device.
[AOD Jig]
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(L2)
Image
* Checking external
damage of the device
[AOD mini]
* Need to change
with battery
Description
1. Check if there is any damage of external
impact on the device.
(especially, Front Window)
2. Disassemble the device.
- Refer to 'Disassembly and assembly video
guide for Galaxy Z Flip 3' from the GSPN.
3. Exchange the display module
with new one and check the device.
CONFIDENTIAL