Samsung SGH-C3200L Troubleshooting
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.
-
C10
6, C220, C323
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:C10
(
VDD_1.8V
(
Check the Clock at
UCP200 A11pin
CLK26M)
(
TP:OSC201
(
Yes
Yes
=1.8
Yes
=26M
1,3
3.7V
V?
HZ
pin
6, C220, C323)
TP: C235)
No
No
No
)
Change the Battery
Because of batt. power low)
(
Check the Main Chip related to
SD1_FB=1.8V(TP:C235)
to lookover 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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8-8
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8-3-2.
Initial
Initial Failure
Yes
R208(RST_BB
using the oscilloscope GND
SHORT PAD.
CP200pin D2
U
TP:TP_RST
(
)>1.7V?
Yes
>1.7V?
)
&
No
Resolder R208, must be higher than
No
Change PBA to check TP_RST.
1.7
V.
Yes
Check the16bit data signals.
Yes
END
8-9
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8-10
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8-11
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8-3-3.
Charging Part
Abnormal charging part
Yes
Check the Battery&TA
connection.
Yes
R309
> 4.9V?
Yes
No
No
be possible that it's not soldering well)
(
Reinsert the Battery or TA.
Resolder R309
Check the Q303 pin
>4.9V ?
Yes
END
4
No
Replace Q303 usingaHeatgun
8-12
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