1. PBA Repair Guide
[GT-S5230]
Samsung Electronics

2. Contents 1. PBA Diagram 2. Trouble Shooting 2-1. No Power
2-2. Lockup / Reset
2-3. SIM Card Failed
2-4. Camera Failed
2-5. No Vibration
2-6. Bluetooth Searching Failed
2-7. No Charging
3. Appendix
3-1. How to check the voltage and frequency

3. 1. PBA Diagram
GT-S5230
TOP
Diagram
Appearance

4. 1. PBA Diagram
GT-S5230
Bottom
Diagram
Appearance

5. 2-1. No Power GT-S5230 Trouble shooting
C330 = 1.8V
C352 = 3V
C333 = 1.2V
C319 = 3V
Input the power
(3.8V)
Power-on-current
>= 100mA Y Y
Check UCP200 N N
Download S/W
Check U300
※ It’s a general case. It cannot be available on the special case.

6. 2-1. No Power GT-S5230 Input the power 3.8V
2. Check the power-on-current >= 100mA
- If not : Download software
3. Check the voltage
1) C330 = 1.8V
2) C352 = 3V
3) C333 = 1.2V
4) C319 = 3V
- If not : Check the U300 (crack, open, short, etc)
4. If there is no problem from 1 to 3, check the UCP200.

7. 2-1. No Power GT-S5230 Picture 2-1-3 UCP200 C352 U300 C330 C319 C333 ●

8. Voltage Div : 1V, Time Div : 1㎳
2-1. No Power
GT-S5230
Scope 2-1-3
C330
C352
Voltage Div : 1V, Time Div : 1㎳ 3V
1.8V

9. Voltage Div : 1V, Time Div : 1㎳
2-1. No Power
GT-S5230
Scope 2-1-3
C333
C319
Voltage Div : 1V, Time Div : 1㎳ 3V
1.2V

10. 2-2. Lockup / Reset GT-S5230 Trouble shooting
Download
the latest S/W
Download
Completed Y
Lockup or reset
(Same as declared) Y
Erase memory
Check UCP200 N N
Repeat the
lockup/reset test
Check UME200
※ It’s a general case. It cannot be available on the special case.

11. 2-2. Lockup / Reset GT-S5230 Erase the memory Picture 2-2-2
2. Download the latest software
- If download is not completed
: Check the UME200
(crack, open, short, etc)
- If download is completed
but it still has the same defect
: Check the UCP200 (crack, open, short, etc)
- If download is completed and you cannot find the same defect
: Repeat the lockup/reset test declared originally
Picture 2-2-2
UCP200
UME200

12. 2-3. SIM Card Failed GT-S5230 Trouble shooting
Check the 6-pins
of SIM socket
There is durst
or damaged N
Input the power
(3.8V)
Pin 1, 2, 4 = 3V
Pin 3 = 3V Clock Y N
Clean or change
SIM socket
Check U300
or UCP200
※ It’s a general case. It cannot be available on the special case.

13. 2-3. SIM Card Failed GT-S5230 Check the 6-pins of SIM socket
- If there is a durst : Clean the pins
- If it is damaged : Change the SIM socket
2. Input the power 3.8V
3. Check the voltage
1) Pin number 1, 2, 4 = 3V
2) Pin number 3 = 3V Clock
- If not : Check the U300 or UCP200
(crack, open, short, etc)
※ Check the voltage when you input the power on the PBA.
Picture 2-3-3 1 2 3 ● ● 4 ● ●

14. Voltage Div : 1V, Time Div : 50㎳
2-3. SIM Card Failed
GT-S5230
Scope 2-3-3
Pin number 1, 2, 4
Pin number 3
Voltage Div : 1V, Time Div : 50㎳
3V Clock
1.9V Clock 3V
1.9V

15. 2-4. Camera Failed GT-S5230 Trouble shooting
Connect a camera
Input the power
Enter the
camera preview
There is durst
or damaged N Y
Check CN300
C302 = 3V
C311 = 1.8V Y N N
Clean or Change
CN300
Check UCP200
Check U302
※ It’s a general case. It cannot be available on the special case.

16. 2-4. Camera Failed GT-S5230 Check the CN300
- If there is a durst or damaged : Clean or changed the CN300
2. Connect a camera, input the power 3.8V, Enter the camera preview
3. Check the voltage U302 Pin number 3 = 3V
- If not : Check the UCP200 (crack, open, short, etc)
4. Check the voltage C311 = 1.8V
- If not : Check the U302 (crack, open, short, etc)
※ Check the voltage during camera entering mode.
- LCD, TSP and camera must be connected to PBA.
- Input the power and press key number *#0*# → 7

17. 2-4. Camera Failed GT-S5230 Picture 2-4-1, 2-4-3, 2-4-4 UCP200 CN300 3●
C311
U302

18. Voltage Div : 1V, Time Div : 1㎳
2-4. Camera Failed
GT-S5230
Scope 2-4-3, 2-4-4
C302
C311
Voltage Div : 1V, Time Div : 1㎳ 3V
1.8V

19. 2-5. No Vibration GT-S5230 Trouble shooting
Connect a motor
Input the power
Vibration on Y
R307 = 3.2V
C341 = 3.2V N N
Check U300
Check U305
※ It’s a general case. It cannot be available on the special case.

20. 2-5. No Vibration
GT-S5230
Connect a motor, input the power (3.8V), vibration on
Check the voltage R307 = 3.2V
- If not : Check the U300 (crack, open, short, etc)
3. Check the voltage C341 = 3.2V
- If not : Check the U305 (crack, open, short, etc)
※ Check the voltage during vibrating.
- LCD, TSP and vibrator must be connected to PBA.
- Input the power and press key number *#0*# → 5

21. 2-5. No Vibration
GT-S5230
Picture 2-5-2, 2-5-3
U300
C341 ●
U305
R307

22. Voltage Div : 1V, Time Div : 1㎳
2-5. No Vibration
GT-S5230
Scope 2-5-2, 2-5-3
R307
C341
Voltage Div : 1V, Time Div : 1㎳
3.2V
3.2V

23. 2-6. Bluetooth Searching Failed GT-S5230
Trouble shooting
Input the power
Bluetooth on
Search devices Y Y
L136 = 3V
C233 = 26MHz
Check UCP200 N N
Check U200
Check U300
※ It’s a general case. It cannot be available on the special case.

24. 2-6. Bluetooth Searching Failed GT-S5230
Input the power (3.8V), Bluetooth on, Search devices
2. Check the Voltage L136 = 3V
- If not : Check the U300 (crack, open, short, etc)
3. Check the C233 = 26MHz
- If not : Check the U200 (crack, open, short, etc)
4. If there is no problem from 1 to 3, Check the UCP200.
(crack, open, short, etc)
※ Check the voltage during searching the devices.
- BT Ant, LCD and TSP must be connected to PBA.
- Insert a SIM card and input the power.
- Activate on the bluetooth and search devices.

25. 2-6. Bluetooth Searching Failed GT-S5230
Picture 2-6-2, 2-6-3, 2-6-4
U300
U200
L136
C233 ● ●

26. 2-6. Bluetooth Searching Failed GT-S5230
Scope 2-6-2, 2-6-3
L136
C233
Voltage Div : 1V, Time Div : 1㎳
Voltage Div : 1V, Time Div : 50㎳
26MHz 3V

27. 2-7. No Charging GT-S5230 Trouble shooting
Connect TA
to the power supply
Input the power
(5V)
Current = 400 ~ 600mA
C310 = 5V N N
Check U300
Check IFC100
※ It’s a general case. It cannot be available on the special case.

28. 2-7. No Charging GT-S5230 Connect TA to power supply and input the 5V.
2. Insert a TA to PBA
3. Check the current = 400 ~ 600mA
- If not : Check the U300
(crack, open, short, etc)
4. Check the voltage C310 = 5V
- If not : Check the IFC100
※ Check the voltage during charging.
- TA can be connected to power supply must be prepared.
Picture 2-7-1, 2-7-2 TA
Insert to PBA

29. Voltage Div : 1V, Time Div : 1㎳
2-7. No Charging
GT-S5230
Picture 2-7-4
Scope 2-7-4
C310
Voltage Div : 1V, Time Div : 1㎳
IFC100
U300 5V
C310 ●

30. 3-1. How to check the voltage and frequency
Equipment : Oscilloscope (Bandwidth : more than 500MHz)
PBA condition : Power on by using power supply
Ground the scope
Put a scope to the point you want to check
Input the power
Ground
Put a scope