Samsung GT-S5570 Schematic
Level
8.
Block Diagram
8-1.
Repair
3
8-1
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
PCB Diagrams
8-2.
8-2-1.
Top
Level3Repair
8-2
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
Level3Repair
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
NO
NO
Change the battery
Check the PMIC
relatedtoPS_HOLD
?
NO
Resolder OSC400
Yes
C440(VREG_MSMC1)=1.2V?
C439(VREG_MSMC2)=1.2V?
C438(VREG_MSME)=1.8V?
C410(VREG_MSMP)=2.6V?
C411(VREG_MSMA)=2.6V?
Yes
Check the clock
C110
=19.2
Mhz
?
Yes
Check the initial operation
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
NO
Check the U615
NO
Check the clock generation circuit
8-3
Level3Repair
8-4
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
Level3Repair
8-5
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
Level3Repair
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,
Correctly
mounted?
correctly connect
NO
F600, F601, F602,
F603, F604, F605,
Resolder
NO
Yes
LCD
Replace
Yes
U620
LED_P_26V=26V?
NO
Replace U503&Check
neighboring circuits
8-6
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
Level3Repair
8-7
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
Level3Repair
8-8
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
Level3Repair
8-3-3.
TSP
Operate TSP
NG
Check
TSP Connecting
YES
Change TSP Module
No Problem?
NO
Reconnecting TSP
NO
Change main PBA
END
8-9
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
Level3Repair
8-3-3.
z
Audio Working
Speaker Working
Operate speaker
NG
Check
Speaker Con.
Soldering
YES
Speaker break
down?
NO
NO
Resolder
YES
Change Speaker
Signal on in
L510, L511?
NO
Signal on in
C406, C407?
NO
Change main PBA
YES
YES
Resolder
L510,L511
SPK ASSY
Resolder
C406, C407
Replace U500
8-10
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
Level3Repair
8-11
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
Level3Repair
8-12
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
Level3Repair
Receiver Working
z
Operate Receiver
NG
Check
Receiver
Connector
YES
Receiver break
down?
NO
Change main PBA
NO
Reconnect
YES
Change Receiver
8-13
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
z
MainMICWorking
Operate MIC
Level3Repair
NG
Pollute
MIC Hole?
NO
Check
C531=High?
YES
Change MIC
YES
NO
Clean up
MIC hole
Remove MIC,
Check MIC1st pin
MIC_BIAS_1.8V)
(
=1.8V?
YES
Change MIC
NO
Change main PBA
8-14
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
Level3Repair
8-15
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
z
SubMICWorking
Operate MIC
Level3Repair
NG
Pollute
MIC Hole?
NO
Check
C512=High?
YES
Change MIC
YES
NO
Clean up
MIC hole
Change main PBA
8-16
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
Loading...