Samsung S3350 Block Diagram 7
Level
8.
Block Diagram
8-1.
Repair
3
8-1
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PCB Diagrams
8-2.
8-2-1.
Top
8-2
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8-2-1.
Bottom
8-3
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Flow Chart of Troubleshooting
8-3.
presetting methods for checking TP
※
GND&TP(exp. VBAT=
-
look over the coming out signal.
-
TA600, C603, C604
using Oscilloscope
)
GND
Oscilloscope
←
TP(Test Point)
8-4
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Multi-meter
←
Level3Repair
EX) to look up the TP, shunt Cap.
-
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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
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8-3-1.
Power On
Power On'does not work
'
Check the Battery Voltage
is more than
TP:TA100, C210
(
VDD_1.8V
TP: C232)
(
Check the Clock at
UCP200 A11pin
CLK26M)
(
TP:OSC201
(
Yes
Yes
=1.8
Yes
=26M
3.7V
1,3
V?
HZ
pin
No
)
No
No
)
Change the Battery
Because of batt. power low)
(
Check the Main Chip related to
SD1_FB=1.8V(TP:C232)
to look over the Chip damage)
(
Check the Main Chip
to lookover the Chip damage)
(
OSC201
(TP:
using the oscilloscope)
pin/look over the
1,3
waverform
END
Yes
8-6
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8-7
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8-3-2.
Initial
Initial Failure
Yes
TP:RST_BB
using the oscilloscope GND
SHORT PAD.
Check the16bit data signals.
>1.7V?
Yes
Yes
END
&
No
Check the circuit related to reset
8-8
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8-9
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8-3-3.
Charging Part
Check the Battery&TA
Abnormal charging part
Yes
connection.
Yes
R304
> 4.9V?
Yes
No
No
be possible that it's not soldering well)
(
Reinsert the Battery or TA.
Resolder R304
Check the Q301 pin
>4.9V ?
Yes
END
4
No
Replace Q301 usingaHeatgun
8-10
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8-11
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8-3-4.
Sim Part
checking its waveform using an
Phone can't access SIM Card
Yes
SIM
pin3(C608) of SIM
pin1(C606)
600
or C609
Check SIM_CLK Signal on
method:wiring pin3and
(
>2.84V?
After Power ON,
seconds.
oscilloscope)
≒
Yes
600ina
2.85V
few
No
No
Resolder C606, C609, R610
insert SIM card&access it,
then must be sim pin1 or C606
Resolder or Replace SIM600 connector.
Because of not soldering well)
(
> 2.84V
Yes
Check the SIM Card
look over if it get damaged.)
(
Yes
END
8-12
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