Samsung E1050 Block Diagram 7
Level
8.
Block Diagram
8-1.
Repair
3
8-2
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PCB Diagrams
8-2.
8-2-1.
Top
(2010.12.01
Rev0.6)
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. VBUS_5.0V=
-
look over the coming out signal.
-
C594~
C599) using Oscilloscope
GND
Oscilloscope
←
TP(Test Point)
8-4
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8-3-1.
Power On
Check the Battery Voltage
is more than
TP:C108, C109, C212,C308)
(
PMU_VIO
TP:C207, C315)
(
Check the Clock at
UCP200 L16pin
CLK32K)
(
TP:OSC201
(
=2.8
=32
3.7V
Yes
Yes
KHZ
)
Yes
V?
No
No
Change the Battery
Because of batt. power low)
(
Check the Main Chip related to
GPIO_2.8V(TP:C207, C315)
V
Check the Main Chip
OSC201/look over the waverform
(TP:
using the oscilloscope)
VCORE
+
TP:C204, C214, L201)
(
Check the initial operation
_1.25V
V?
=1.25
Power On"
"
END
Yes
Yes
No
Resolder C204, C214 and L201
to confirm coming out power V_core)
(
8-5
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S
P
K
3
C223
0
0
ZD303ZD304
C
C
L
L
3
3
3
3
0
0
1
1
8
7
3
2
C326
T
R
R
1
3
0
0
2
0
0
0
3
C
U
3
0
6
C305
R106
M
O
T
1
0
0
R107
U
1
0
1
C109
R108
L306
C311
L305
C310
C309
R306
I
F
C
3
0
0
L301
C100
U
1
0
0
L303
L302
Z
D
3
0
0
L
3
0
0
C
1
0
3
C
1
0
4
L304
R307
R303
1
0
3
D
Z
BTC200
C315
C
Z
R
3
D
2
2
5
R304
2
0
0
4
C
R305
0
2
2
8
R
3
0
8
C308
R212
C224
T
2
R
0
0
8
0
1
C
S
C
C
R
2
2
2
0
1
1
5
1
3
C
C
R
2
0
2
TP200
C
2
2
2
C
2
S
1
C
6
1
0
3
7
0
2
P
T
C
2
1
8
C
2
2
1
TH200
R
C213
2
0
0
R201
B
A
T
2
0
0
0
L
1
1
3
0
C
1
1
9
TP203
TP202
C
2
2
0
R208
1
T
N
A
2
3
1
1
7
6
0
0
C
2
1
0
C
2
1
9
SC101
RFS100
C122
L103
C
2
0
9
E
U
2
M
0
0
C203
R
1
1
2
C
1
2
3
R
1
1
4
N
1
0
T
1
A
2
C
1
S
0
O
6
0
2
P
T
C
2
0
8
C
2
S
O
C215
L106
L108
C
C
C
C
1
1
1
1
1
1
1
1
3
5
6
7
L107
F100
C
1
1
2
S
C
1
C111
0
5
L102
PAM100
R
R
3
3
0
0
0
1
C
C303
3
0
0
C302
C304 C307
0
0
2
P
C
U
R
R
1
1
0
0
4
5
C207
SC100
C
3
0
1
R314
C323
R317
C324
C318
R
3
1
5
R312
C
3
1
9
C
2
2
6
C320
C
R209
2
2
R
R
7
C
2
2
5
C
C
2
2
C
0
0
2
2
6
0
4
3
0
9
R310
2
2
0
0
1
7
C
S
1
0
1
N
C
2
1
4
C
L201
C
C
L
2
2
2
0
0
0
0
1
L109
SC104
C
1
0
8
R311
R
R
C314
2
2
0
0
5
6
L111
L100
L110
C118
D
2
0
2
7
0
1
C
S
C212
0
S
C
1
0
9
S
C
1
0
6
MIC300
C321
L
3
0
9
C317
ZD305
C327
L
L
3
3
1
1
1
0
8-6
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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:LCD PIN5)
(
Yes
Check the16bit data signal
memory(TP:TP200)
&
No
No
Replace UCP200, must be"H"
Change PBA
to check LCD PIN5)
(
END
Yes
8-7
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8-8
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