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Display problem
Ste
p
1
Confrm the defect symptom
2
Check the LCD connector (HDC702)
3
Replace the TFT LCD
Connect a LCD and display on with a power
4
supply
(power supply voltage : 4.0V)
Check the voltage of C603 = 19V +/- 1V
5
Notice. It should be measured when the display
is activated on
Check the voltage of C605 = 3.3V
6
Notice. It should be measured when the display
is activated on
Check the voltage of C606 = 1.8V
7
Notice. It should be measured when the
display is activated on
Check the
Signal
(F601, F603, F604)
8
Notice. It should be measured when the
display is activated on
© Samsung Electronics Co., LTD |
Check point
of following chips
Confidential
Result value
-
Broken, dust, corrosion
Insert status
Normal
Solved
Not solved
-
If not the correct value
C603 = 19V +/- 1V
If not the correct value
C605=3.3V
If not the correct value
C606 = 1.8V
If not the correct value
Same signal compared with
a good PBA
Defect point
-
AMOLED connector
(HDC702)
Go to the next step
TFT LCD
Go to the next step
-
U602
Go to the next step
U600
Go to the next step
PMIC
Go to the next step
F601, F603, F604
MAIN CHIP or PBA
29
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