GH68-08702A-TSHOO-9.pdf
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2. SGH-X150
Flow Chart of Troubleshooting
2-1. BASEBAND
2-1-1. Power ON
'Power ON' does not work
check the current
consumption
>= 100mA
No
Download again
Yes
Check the Voltage
of the Battery
>= 3.3V
No
Charge the battery
Yes
Check the pin C152,
C153,C155,C168 of
U107 is
>=2.8V
No
Check
"Power On"
key?
No
check keypad
Yes
check
U107
and
C153
1
Yes
Check the clock signal
at pin #3 of OSC100
Freq=26Mhz,
No Check the clock generation
circuit OSC100
2
Yes
Check the Initial Operation
Yes
END
2-
1
SGH-X150 Flow Chart of Troubleshooting
VRF_2.9V
VCCA_2.9V
VCCD_2.9V
VBAT
C152
C153
C155
DSP_DB(0:15)
C162
VDD34
C11
VDD12
J13
DSP_DB(15)
DSP_DB(14)
DSP_DB(13)
DSP_DB(12)
DSP_DB(11)
DSP_DB(10)
DSP_DB(9)
DSP_DB(8)
D2
DB15
UP_CLK
N9
SIMCLK
SIMDATA
D3
DB14
UP_RST
R10
SIMRST
E3
DB13
UP_IO
P10
E2
DB12
SIM_IO
J11
SIM_IO
SIM_RST
F3
DB11
SIM_RST
K11
F2 DB10
SIM_CLK
K14
SIM_CLK
F1 DB9
F4 DB8
1
2
2-
2
SGH-X150 Flow Chart of Troubleshooting
2-1-2. Initial
Initial Failure
check the pin
RSTB of UCP200
is LOW?
No
Check UCP200
1
Yes
check the pin CKI
of UCP200 is
13Mhz?
No
Check R177,R131,C127
2
Yes
Check the clock
signal at pin #3 of
OSC100
Freq=26Mhz?
No
check
OSC100
3
Yes
Check the pin #9 of
U102 is HIGH and pin
#11, #13 is 2.9V?
No
Check U107
4
Yes
Check the Initial Operation
Yes
END
2-
3
SGH-X150 Flow Chart of Troubleshooting
R131
C127
CLK13M_TR
R177
R133
13M_OUT
CLK13M_MC
C129
VCCD_1.8V
VCCD_2.9V
VRTC_3V
VCCD_1.8V VCCD_2.9V
C201
C200
C202
C203
VREF
TR_RST
TDO
F12
F15
TR_RST
TRST
H12
TDI
G12
TMS
H13
TCK
4
3
2
1
2-
4
CLK13M_TR
SGH-X150 Flow Chart of Troubleshooting
2-1-3. Sim Part
"Insert SIM" is displayed on the LCD
The voltage is 2.8V
at the pin#1 of
SIM100
No
Check the
U107
1
Yes
Is there any signal
pin #2,3,4 of
SIM100?
No
Check the
U107 & UCP200
2
Yes
Check the SIM Card
END
SIM100
1
2
VSIM
SIM_CLK
SIM_IO
C138 C139
C140 C141
C142
2
2-
5
SIM_RST
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