Samsung E1172 Troubleshooting
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
8-2-1.
Bottom
8-3
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
Flow Chart of Troubleshooting
8-3.
presetting methods for checking TP
GND&TP(exp. Vbatt=C108, C109, C212, C308)using Oscilloscope
look over the coming out signal.
-
Level3Repair
GND
Oscilloscope
TP(Test Point)
8-4
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
Level3Repair
Multi-meter
EX) to look up the TP, shunt Cap.
-
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
Checking the TP(test point) using Multi-meter
if checking the GND, you can listen"beep"
if checking the Signal, you can't listen it.
8-5
Level3Repair
8-3-1.
Power On
Power On'does not work
'
Check the Battery Voltage
TP:C108, C109, C212, C308)
(
Yes
is more than
PMU_VIO
TP:C207, C315)
(
Check the Clock at
UCP200 L16pin
CLK32K)
(
TP:R103)
(
Yes
=2.8
Yes
=32
3.7V
V?
KHZ
No
No
No
Change the Battery
Because of batt. power low)
(
Check the Main Chip related to
GPIO_2.8V(TP:C207, C315)
V
to lookover the Chip damage)
(
Check the Main Chip
to lookover the Chip damage)
(
R103/look over the waverform
(TP:
using the oscilloscope)
VCORE
+
=1.25
TP:C204, C21
(
END
Yes
_1.25V
V?
,
0
Yes
L201)
No
Resolder C204, C214 and L201
to confirm coming out power V_core)
(
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
8-3-2.
Initial
Initial Failure
Yes
UCP200 pin T4(RSTON)
="H(>2.4V)"?
TP106)
using the oscilloscope GND&TP
(TP:
Yes
CP200pin M4 or D12=
U
"H(>2.4V)"?
TP:TP100, LCD PIN5)
(
No
No
Replace UCP200, must be"H"
usingaHeatgun
Change PBA to check TP100&LCD PIN5
Yes
Check the16bit data signal
memory CE(TP:TP200)
&
Yes
END
8-9
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
Level3Repair
8-10
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
Level3Repair
8-3-3.
Charging Part
UCP200 pin V10(VCHG_P)
UCP200 pin V9(AUX_DET
Abnormal charging part
Yes
>4.9V
TP:C223)
(
Yes
or R303
"L=2.8V"?
Yes
No
be possible that it's not soldering well)
(
)
No
Resolder R206, C223
Resolder or Replace R303
Must be"L=2.8V"
Check the UCP200 pin R9
1.4V
Yes
END
No
Replace UCP200 usingaHeatgun
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
Loading...