Samsung GT-S5830 Troubleshooting
Level
8.
Block Diagram
8-1.
Repair
3
8-1
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PCB Diagrams
8-2.
8-2-1.
Top
(2010.12.24 Rev0.6)
8-2
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8-2-1.
Bottom
8-3
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LOGIC
8-3.
8-3-1.
Power On
Power switch on
NG
Check the current
consumption
>= 100
mA?
Yes
Check the battery
voltage
>= 3.45?
Yes
Check the TP_PS_
HOLD pin PS_HOL
D=2.6
V?
Yes
Check the clock at
OSC400
=32
KHz
NO
Download
NO
NO
Change the battery
Check the PMIC
relatedtoPS_HOLD
?
NO
Resolder OSC400
Yes
C441(VREG_MSMC1)=1.2V?
C440(VREG_MSMC2)=1.2V?
C439(VREG_MSME)=1.8V?
C410(VREG_MSMP)=2.6V?
C411(VREG_MSMA)=2.6V?
Yes
Check the clock
C113
=19.2
Mhz
?
Yes
Check the initial operation
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NO
Check the U401
NO
Check the clock generation circuit
8-4
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8-5
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8-6
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8-3-2.
LCD Working
Power Switch On
LCD Display
On?
Yes
NO
LCD FPCB
connector is co
rrectly connecti
ned?
Yes
F600, F601,
F602, F603,
F604, F605,
F606 Correctly
mounted?
correctly connect
NO
F600, F601, F602,
F603, F604, F605,
F606 Resolder
NO
Yes
LCD
Replace
Yes
C534
LED_P_26V=26V?
NO
Replace U503&Check
neighboring circuits
8-7
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8-8
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8-9
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8-3-3.
TSP
Operate TSP
NG
Check
TSP Connecting
YES
Change TSP Module
No Problem?
NO
Reconnecting TSP
NO
Change main PBA
END
8-10
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8-3-3.
Audio Working
Speaker Working
Operate speaker
NG
Check
Speaker
Connector
YES
Speaker break
down?
NO
NO
Resolder
YES
Change Speaker
Signal on in
L513, L514?
NO
Signal on in
C406, C407?
NO
Change main PBA
YES
YES
Resolder
L513,L514
SPK ASSY
Resolder
C406, C407
Replace U400
7
8-11
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8-12
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8-13
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Receiver Working
Operate Receiver
NG
Check
Receiver
Connector
YES
Receiver break
down?
NO
Change main PBA
NO
Resolder
YES
Change Receiver
8-14
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MICW
orking
Operate MIC
NG
Pollute
MIC Hole?
NO
Signal on in
C508, C512
YES
Clean up
MIC hole
NO
?
Change UCP300
YES
Check Voltage
of R513, R511
R513&R511's
Voltage
YES
Signal on in
L507,L509
L515,L516
?
YES
Change main PBA
NO
NO
Resoldering
L507,L509
L515,L516
8-15
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8-16
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Stereo Headset Working
Hands-free stereo
headset
NG
NO
Level3Repair
YES
Check U502Button NG?
MIC NG?
NO
SPK NG?
NO
The End
YES
YES
Check
L501
YES
Resolder L501
Signal on
in C517,
C518?
NO
Signal on
in C408
C409?
NO
NO
Check U502
YES
Check L502, L504,
YES
Check R405, R406,
U400
Change Main PBA
8-17
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