Samsung Electronics
PBA Repair Guide[SGH-I900]
PBA Repair Guide[SGH-I900]
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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
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1. PBA Diagram
TOP
Diagram Appearance
SGH-I900
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1. PBA Diagram
Bottom
Diagram Appearance
SGH-I900
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2-1. No Power (PDA)
Trouble shooting
Power-on-current>= 100mA
Power-on-current>= 100mA U304 P1 = 4V U304 P1 = 4V
C668 = 3VC665, C674 = 1.8VC667, C677 = 2.6V
C668 = 3VC665, C674 = 1.8VC667, C677 = 2.6V
Input the power(3.8V)
Input the power(3.8V)
Download S/W(PDA)
Download S/W(PDA)
Check U304Check U304 Check U605Check U605
※ It’s a general case. It cannot be available on the special case.
Check UCP600Check UCP600YY
NN
YY
NN
YY
NN
SGH-I900
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2-1. No Power (PDA)1. Input the power 3.8V
2. Check the power-on-current >= 100mA
- If not : Download PDA software (refer to 2-2. Lockup/Reset)
3. Check the voltage U304 Pin number 1 = 4V
- If not : Check the U304 (crack, open, short, etc)
4. Check the Voltage
1) C668 = 3V
2) C665, C674 = 1.8V
3) C667, C677 = 2.6V
- If not : Check the U605 (crack, open, short, etc)
5. There is no problem from 1 to 4, check the UCP600
SGH-I900
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2-1. No Power (PDA)
Picture 2-1-3, 2-1-4, 2-1-5Picture 2-1-3, 2-1-4, 2-1-5
SGH-I900
●●
UCP600UCP600
U304U304
11
C668C668
C665C665 C674C674C667C667
C677C677
U605U605
●●
●●●●
●●
●●
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2-1. No Power (PDA)
U304 Pin number 1 C668
Voltage Div : 1V, Time Div : 1 ㎳ Voltage Div : 1V, Time Div : 1 ㎳
Scope 2-1-3, 2-1-4Scope 2-1-3, 2-1-4
SGH-I900
3V3V4V4V
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2-1. No Power (PDA)
C665, C674 C667, C677
Voltage Div : 1V, Time Div : 1 ㎳ Voltage Div : 1V, Time Div : 1 ㎳
Scope 2-1-4Scope 2-1-4
1.8V1.8V
SGH-I900
1.4V1.4V
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2-1. No Power (Phone)
Trouble shooting
Power-on-current>= 100mA
Power-on-current>= 100mA U201 P2 = 1.8V U201 P2 = 1.8V D300 P2 = 1.8VD300 P2 = 1.8V
Input the power(3.8V)
Input the power(3.8V)
Download S/W(Phone)
Download S/W(Phone)
Check U201Check U201 Check UME201Check UME201
※ It’s a general case. It cannot be available on the special case.
YY
NN
YY
NN
YY
NN
SGH-I900
OSC102 = 32kHzOSC102 = 32kHz
CheckOSC102 or UCP600
CheckOSC102 or UCP600
Check U301Check U301YY
NN
D300 P3 = 1.8VD300 P3 = 1.8V
Check D300Check D300
YY
NN
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2-1. No Power (Phone)
1. Input the power 3.8V
2. Check the power-on-current >= 100mA
- If not : Download Phone software (refer to 2-2. Lockup/Reset)
3. Check the voltage
1) U201 Pin number 2 = 1.8V (Low)
- If not : Check the U201 (crack, open, short, etc)
2) D300 Pin number 2 = 1.8V (Low)
- If not : Check the UME201 (crack, open, short, etc)
3) D300 Pin number 3 = 1.8V (Low)
- If not : Check the D300 (crack, open, short, etc)
SGH-I900
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2-1. No Power (Phone)
4. Check the OSC102 = 32kHz
- If not : Check the OSC102 or UCP600
5. If there is no problem from 1 to 4, check the U301
(crack, open, short, etc)
SGH-I900
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2-1. No Power (Phone)
Picture 2-1-3, 2-1-4, 2-1-5Picture 2-1-3, 2-1-4, 2-1-5
SGH-I900
UME201UME201
●●U201U201
22
●●2, 32, 3
D300D300●●
UCP600UCP600
OSC102OSC102
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2-1. No Power (Phone)
U201 P2, D300 P2, 3 OSC102
Voltage Div : 1V, Time Div : 1 ㎳ Voltage Div : 1V, Time Div : 20 ㎲
Scope 2-1-3, 2-1-4Scope 2-1-3, 2-1-4
32kHz32kHz
SGH-I900
1.8V1.8V
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2-2. Lockup / Reset
Trouble shooting
DownloadCompletedDownloadCompleted
Lockup or reset(Same as declared)
Lockup or reset(Same as declared)
Lockup/Reset(Omnia screen)Lockup/Reset
(Omnia screen)
Check UME200(Phone)
Check UME200(Phone)
Repeat thelockup/reset test
Repeat thelockup/reset test
※ It’s a general case. It cannot be available on the special case.
YY
NN
YY
NN
SGH-I900
Lockup/Reset(Phone off
after power on)
Lockup/Reset(Phone off
after power on)
Use a PDA J-TAGUse a PDA J-TAG
Use a Phone J-TAGUse a Phone J-TAG
Downloadthe latest PDA S/W
Downloadthe latest PDA S/W
Downloadthe latest Phone S/W
Downloadthe latest Phone S/W
Check UCP600(PDA)
Check UCP600(PDA)
NN
Check UCP200(Phone)
Check UCP200(Phone)
Check UCP600(PDA)
Check UCP600(PDA)
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2-2. Lockup / Reset
1. Use a J-TAG to enable USB
- Lockup/Reset on Omnia screen : Use a PDA J-TAG
- Phone off after power on : Use a Phone J-TG
2. Download the latest software
- If download is not completed
: Check the UCP600 (PDA)
(crack, open, short, etc)
: Check the UME200 (Phone)
(crack, open, short, etc)
Picture 2-2-2Picture 2-2-2
SGH-I900
UCP600UCP600UCP200UCP200
UME200UME200
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2-2. Lockup / Reset
- If download is completed but it still has the same defect
: Check the UCP600 (PDA)
(crack, open, short, etc)
: Check the UCP200 (Phone)
(crack, open, short, etc)
- If download is completed and you cannot find the same defect
: Repeat the lockup/reset test declared originally
SGH-I900
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2-3. SIM Card Failed
Trouble shooting
Pin 1, 2, 4 = 3VPin 3 = 3V ClockPin 1, 2, 4 = 3VPin 3 = 3V Clock
Check the 6-pinsof SIM socket
Check the 6-pinsof SIM socket
Clean or changeSIM socket
Clean or changeSIM socket
Check U301or UCP200
Check U301or UCP200
※ It’s a general case. It cannot be available on the special case.
There is durstor damaged
There is durstor damaged
NN
Input the power(3.8V)
Input the power(3.8V)
YY
NN
SGH-I900
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2-3. SIM Card Failed
1. 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 U301 or UCP200
(crack, open, short, etc)
※ Check the voltage when you input the power on the PBA.
Picture 2-3-3Picture 2-3-3
SGH-I900
●●●●●●
●●
1 2 31 2 3
44
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2-3. SIM Card Failed
Pin number 1, 2, 4 Pin number 3
Voltage Div : 1V, Time Div : 50 ㎳ Voltage Div : 1V, Time Div : 50 ㎳
Scope 2-3-3Scope 2-3-3
3V3V
1.9V1.9V
3V Clock3V Clock
1.9V Clock1.9V Clock
SGH-I900
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2-4. Camera Failed
Trouble shooting
※ It’s a general case. It cannot be available on the special case.
Clean or ChangeHDC500
Clean or ChangeHDC500
There is durstor damaged
There is durstor damagedCheck HDC500Check HDC500 U512 P3 = 3VU512 P3 = 3V
YY
NN
SGH-I900
Check UCP600Check UCP600
YY
NN
C535 = 1.2VC535 = 1.2V
Check U512Check U512
NN
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2-4. Camera Failed
1. Check the HDC500
- If there is a durst or damaged : Clean or change the HDC500
2. Connect a camera and input the power 3.8V
3. Check the voltage U512 Pin number 3= 3V
- If not : Check the UCP600 (crack, open, short, etc)
4. Check the voltage C535 = 1.2V
- If not : Check the U512 (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
SGH-I900
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2-4. Camera Failed
Picture 2-4-3, 2-4-4Picture 2-4-3, 2-4-4
SGH-I900
UCP600UCP600
●●U512U512
33 C535C535
HDC500HDC500
●●
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2-4. Camera Failed
U512 Pin number 3 C535
Voltage Div : 1V, Time Div : 1 ㎳ Voltage Div : 1V, Time Div : 1 ㎳
Scope 2-4-3, 2-4-4Scope 2-4-3, 2-4-4
SGH-I900
1.2V1.2V
3V3V
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2-5. No Vibration
Trouble shooting
※ It’s a general case. It cannot be available on the special case.
Check the HDC500Check the HDC500
Clean or ChangeHDC500
Clean or ChangeHDC500
There is durstor damaged
There is durstor damaged U510 P1 = 3VU510 P1 = 3V
Check U609Check U609
NN
Connect a motorInput the power
Vibration on
Connect a motorInput the power
Vibration on
YY
NNC541 = 3VC541 = 3V
Check U510Check U510
NN
SGH-I900
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2-5. No Vibration
1. Check the HDC500
- If there is a durst or damaged : Clean or change the HDC500
2. Connect a motor, input the power (3.8V), Vibration on
3. Check the voltage U510 Pin number 1 = 3V
- If not : Check the U609 (crack, open, short, etc)
4. Check the voltage C541 = 3V
- Check the U510 (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
SGH-I900
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2-5. No Vibration
Picture 2-5-1, 2-5-3, 2-5-4Picture 2-5-1, 2-5-3, 2-5-4
U510, U541
Voltage Div : 1V, Time Div : 1 ㎳
Scope 2-5-3, 2-5-4Scope 2-5-3, 2-5-4
3V3V
SGH-I900
HDC500HDC500
U510U510
11 ●●
U609U609
C541C541
●●
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2-6. Bluetooth Searching Failed
Trouble shooting
※ It’s a general case. It cannot be available on the special case.
SGH-I900
CheckL119, ANT103
CheckL119, ANT103
Resolder or changeResolder or change
There is problem(crack, open)
There is problem(crack, open)
U101 P6 = 3.3VU101 P5 = 1.8VU101 P6 = 3.3VU101 P5 = 1.8V
Check U101Check U101
YY
NN
Input the powerBluetooth on
Search devices
Input the powerBluetooth on
Search devices
YY
NN
OSC101 = 26MHzOSC101 = 26MHz
Check OSC101Check OSC101
YY
NN
Check MOD100Check MOD100
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2-6. Bluetooth Searching Failed
1. Check the L119, ANT103 (crack, open, etc)
- If there is a problem : Resolder or change it
2. Input the power (3.8V), Bluetooth on, Search devices
3. Check the voltage U101 Pin number 6 = 3.3V, Pin number 5 =
1.8V
- If not : Check the U101 (crack, open, short, etc)
4. Check the clock OSC101 = 26MHz
- If not : Check the OSC101 (crack, open, short, etc)
5. If there is no problem from 1 to 4, check the MOD100
(crack, open, short, etc)
SGH-I900
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2-6. Bluetooth Searching Failed
※ Check the voltage during searching devices
- LCD and TSP must be connected to PBA.
- Insert a SIM card and input the power.
- Activate on the bluetooth and search devices.
SGH-I900
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2-6. Bluetooth Searching Failed
Picture 2-6-1, 2-6-3, 2-6-4, 2-6-5Picture 2-6-1, 2-6-3, 2-6-4, 2-6-5
SGH-I900
●● ●●
U101U101
L119L119
ANT103ANT103
MOD100MOD100
OSC101OSC101
5,65,6
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2-6. Bluetooth Searching Failed
U101 Pin number 6 U101 Pin number 5
Voltage Div : 1V, Time Div : 1 ㎳ Voltage Div : 1V, Time Div : 1 ㎳
Scope 2-6-3Scope 2-6-3
SGH-I900
1.8V1.8V3.3V3.3V
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2-6. Bluetooth Searching Failed
OSC101
Voltage Div : 1V, Time Div : 20 ㎱
Scope 2-6-4Scope 2-6-4
SGH-I900
26MHz26MHz
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2-7. No Charging
Trouble shooting
※ It’s a general case. It cannot be available on the special case.
Connect TAto the power supply
Connect TAto the power supply U303 P10 = 5VU303 P10 = 5V
CheckU303 or IFC400
CheckU303 or IFC400
Input the power(5V)
Input the power(5V)
NN
Check UCP600Check UCP600YY
SGH-I900
Current = 400 ~ 600mACurrent = 400 ~ 600mA
Check U301Check U301
NN
YY
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2-7. No Charging1. Connect TA to the power supply and input the power (5V)
2. Insert a TA to PBA
3. Check the current = 400 ~ 600mA
- If not : Check the U301
(crack, open, short, etc)
4. Check the voltage U303 Pin 10 = 5V
- If not : Check the U303 or IFC400
5. If there is no problem from 1 to 4,
check the UCP600 (crack, open, short, etc)
※ Check the voltage during charging.
- TA can be connected to power supply must be prepared.
TATA
Picture 2-7-1, 2-7-2Picture 2-7-1, 2-7-2
Insert to PBAInsert to PBA
SGH-I900
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2-7. No Charging
Picture 2-7-4, 2-7-5Picture 2-7-4, 2-7-5
U303 Pin number 10
Voltage Div : 1V, Time Div : 1 ㎳
Scope 2-7-4Scope 2-7-4
5V5V
SGH-I900
IFC400IFC400●●U303U303 1010
UCP600UCP600
U301U301
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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
Input the power
Ground
Ground
Put a scopePut a scope