Display Problem - Samsung Galaxy S7 Edge Service Manual

Troubleshooting

Display Problem

Step
1 Confirm the defect symptom
2 Check the UB connector (HDC9001)
Replace the UB ass'y
3
Connect a UB, and display on with a power
4 supply
(power supply voltage : 4.0V)
Check the voltage of C90000, C90005
5
Notice. It should be measured when the display is
activated on
Check the voltage of following chips
(C9023,C9022,C9027)
6
Notice. It should be measured when the display
is activated on
Check point
- This document cannot be used without Samsung's Authorization -
Result value
-
Broken, dust, corrosion
Loose fitting
Normal
Solved
Not solved
-
If not the correct value
C90000=3.0V
C90005=1.6V
If not the correct value
C9023=4.6V
C9022=-1.4~-5.4V
C9027=5.8~7.9V
Defect point
-
UB connector
(HDC9001)
Connection
Go to the next step
UB ass'y
Go to the next step
-
Display PMIC(U9010)
Go to the next step
Display PMIC(U9010)
MAIN CHIP
Confidential