Samsung SGH-X150 User manual

GSM TELEPHONE
SGH-X150
GSM TELEPHONE CONTENTS
1. Specification
2. Flow Chart of Troubleshooting
3. Exploded Views and Parts List
4. Electrical Parts List
5. PCB Diagrams
6. Block Diagrams

Samsung Electronics Co.,Ltd.
Code No.: GH68-08702A
2005. 11. Rev.1.0
ⓒ
This Service Manual is a property of Samsung Electronics Co.,Ltd.
Any unauthorized use of Manual can be punished under applicable
International and/or domestic law.

1. SGH-X150 Specification
1-1
1-1. GSM General Specification
GSM900
Phase 1
EGSM 900
Phase 2
DCS1800
Phase 1
Freq. Band[MHz]
Uplink/Downlink
890~915
935~960
880~915
925~960
1710~1785
1805~1880
ARFCN range 1~124 0~124 &
975~1023 512~885
Tx/Rx spacing 45MHz 45MHz 95MHz
Mod. Bit rate/
Bit Period
270.833kbps
3.692us
270.833kbps
3.692us
270.833kbps
3.692us
Time Slot
Period/Frame
Period
576.9us
4.615ms
576.9us
4.615ms
576.9us
4.615ms
Modulation 0.3GMSK 0.3GMSK 0.3GMSK
MS Power 33dBm~13dBm 33dBm~5dBm 30dBm~0dBm
Power Class 5 p cl ~ 15pcl 5pcl ~ 19pcl 0pcl ~ 15pcl
Sensitivity -102dBm -102dBm -100dBm
TDMA Mux 8 8 8
Cell Radius 35Km 35Km 2Km

SGH-X150 Speclflcation
1-2
1-2. GSM Tx Power Class
TX Power
control level GSM900
5 33±2 dBm
6 31±2 dBm
7 29±2 dBm
8 27±2 dBm
9 25±2 dBm
10 23±2 dBm
11 21±2 dBm
12 19±2 dBm
13 17±2 dBm
14 15±2 dBm
15 13±2 dBm
16 11±3 dBm
17 9±3dBm
18 7±3 dBm
19 5±3 dBm
TX Power
control level DCS1800
0 30±3 dBm
1 28±3 dBm
2 26±3 dBm
3 24±3 dBm
4 22±3 dBm
5 20±3 dBm
6 18±3 dBm
7 16±3 dBm
8 14±3 dBm
9 12±4 dBm
10 10±4 dBm
11 8±4dBm
12 6±4 dBm
13 4±4 dBm
14 2±5 dBm
15 0±5 dBm

2. SGH-X150 Flow Chart of Troubleshooting
2-1
2-1. BASEBAND
2-1-1. Power ON
check the current
consumption
>= 100mA
Download again
'Power ON' does not work
No
Yes
Yes
END
Yes
Check the Initial Operation
Yes
Charge the battery
No
Check the Voltage
of the Battery
>= 3.3V
check keypad
No
Check the pin C152,
C153,C155,C168 of
U107 is
>=2.8V
Check
"Power On"
key?
No
check U107 and C153
Yes 1
Check the clock signal
at pin #3 of OSC100
Freq=26Mhz,
No Check the clock generation
circuit OSC100
Yes
2

SGH-X150 Flow Chart of Troubleshooting
2-2
1
2
C153
1
S
S
V
4
K
2
S
S
V
2
R
3
S
S
V
6
P
4
S
S
V
5
G
1
1
L
V
D
D
V
5
N
1
O
I
_
D
D
V
4
J
2
O
I
_
D
D
V
4
C
L
T
C
O
_
D
D
V
3
J
1
D
D
V
J13
VDD12
3
M
2
D
D
V
6
N
3
D
D
V
C11
VDD34
0
1
C
5
D
D
V
3
1
B
7
6
D
D
V
6
A
B
D
D
V
1
1
N
D
D
D
V
K14
SIM_CLK
J11
SIM_IO K11
SIM_RST
N9
UP_CLK
P10
UP_IO
R10
UP_RST
5
C
N1
2
6
C
N
3
1
D
8
C
N
6
S
D
N
G
9
G
7
S
D
N
G
0
1
G
8
S
D
N
G
6
H
9
S
D
N
G
3
1
P
V
D
N
G
1
1
F
R
U
C
H
_
D
N
G
4
B
L
T
C
O
_
D
N
G
5
1
B
1
C
S
P
_
D
N
G
5
1
K
2
C
S
P
_
D
N
G
2
1
S
D
N
G9
H
7
J
3
1
S
D
N
G
8
J
4
1
S
D
N
G
9
J
5
1
S
D
N
G
0
1
J
6
1
S
D
N
G
0
1
K
7
1
S
D
N
G
8
F
2
S
D
N
G
9
F
3
S
D
N
G
0
1
F
4
S
D
N
G
7
G
5
S
D
N
G
8
G
F4 DB8
F1 DB9
6
F
B
D
N
G
0
1
M
D
D
N
G
8
E
Q
D
N
G
7
F
1
S
D
N
G
7
H
0
1
S
D
N
G
8
H
1
1
S
D
N
G
F2 DB10
F3 DB11
E2 DB12
E3 DB13
D3 DB14
D2 DB15
C162
C152
VBAT
VRF_2.9V VCCD_2.9VVCCA_2.9V
C155
SIM_IO
SIM_RST
SIMCLK
SIMDATA
SIMRST
SIM_CLK
DSP_DB(0:15)
DSP_DB(15)
DSP_DB(14)
DSP_DB(13)
DSP_DB(12)
DSP_DB(11)
DSP_DB(10)
DSP_DB(9)
DSP_DB(8)

SGH-X150 Flow Chart of Troubleshooting
2-3
2-1-2. Initial
Initial Failure
check the pin
RSTB of UCP200
is LOW?
Check UCP200
No
Yes
Yes
END
Yes
Check the Initial Operation
Yes
Check R177,R131,C127
No
check the pin CKI
of UCP200 is
13Mhz?
Check the clock
signal at pin #3 of
OSC100
Freq=26Mhz?
No check OSC100
1
Check the pin #9 of
U102 is HIGH and pin
#11, #13 is 2.9V?
No Check U107
Yes
2
3
4

SGH-X150 Flow Chart of Troubleshooting
2-4
1
2
3
4
VCCD_1.8V
C200
VCCD_2.9V
C203
C201 C202
0
1
F
F
E
R
V
X0
1
E
A
S
S
V
5
1
E
L
L
P
D
_
S
S
V
3
A
S
S
V
6
F
S
S
V
S
S
V
E
D
D
V6
1
E
7
1
E
E
D
D
V
L
L
P
D
_
D
D
V6
1
G
C
T
R
V8
D
S
S
V2
A
1
B
E
D
D
V
E
D
D
V4
1
B
E
D
D
V1
M
2
U
E
D
D
V
E
D
D
V8
P
5
1
U
E
D
D
V
E
D
D
V6
1
U
6
1
N
E
D
D
V
D
D
V1
R
4
R
D
D
V
D
D
V3
1
T
6
1
R
D
D
V
D
D
V7
1
R
5
A
D
D
V
D
D
V6
1
C
A
D
D
V1
1
C
TCK H13
TDI H12
F12
TDO
G12
TMS
TRST F15
D
D
V2
E
1
G
D
D
V
B
T
S
R2
1
C
7
1
F
I
K
C
VRTC_3V
VCCD_1.8V VCCD_2.9V
VREF
TR_RST
TR_RST
CLK13M_TR
R133
R131
R177
C127
C129
13M_OUT CLK13M_MC
CLK13M_TR

SGH-X150 Flow Chart of Troubleshooting
2-5
2-1-3. Sim Part
"Insert SIM" is displayed on the LCD
Is there any signal
pin #2,3,4 of
SIM100?
Check the U107
Check the U107 & UCP200
END
No
Yes
No
Yes
1
2
Check the SIM Card
The voltage is 2.8V
at the pin#1 of
SIM100
1
2
2
C140 C141 C142
C138 C139
9C
N
C
N
0
1
C
C
V
1
2C
C
V
5P
P
V
SIM100
K
L
C
3
D
N
G
4
O
/
I
6
C
N
7
8C
N
SIM_IO
SIM_RST
VSIM
SIM_CLK

SGH-X150 Flow Chart of Troubleshooting
2-6
2-1-4. Microphone Part
* Call with Sim before testing.
Check the soldered
status of microphone
MicroPhone does not work
Resolder microphone
END
No
Yes
Yes
Check the reference
voltage on mic path
R169 ≒2.0V
Yes
Resolder or change
R169,TA185,R148,R149,R150,R151,
R152,R153,C156,C157,C158,C160,C161
No
Is microphone OK?
Yes
Check U107
No
1
2
C158
C160
R168
R152
C161
R148
11
22
MIC100
TA185
R169
C156
R149
C157
R153
R151
R150
MIC+
MICOUTP
MICINP
MICINN
MICOUTN

SGH-X150 Flow Chart of Troubleshooting
2-7
1
1
2

SGH-X150 Flow Chart of Troubleshooting
2-8
2-1-5. Receiver Part
Check the connection
status of LCD connector
HDC200
There is no sound from receiver
Are there any signal at
the receiver pad on LCD
PCB?
reconnect HDC200
Replace the receiver module
END
No
Yes
No
Yes
Replace U107
1
Yes
2

SGH-X150 Flow Chart of Troubleshooting
2-9
1
2

SGH-X150 Flow Chart of Troubleshooting
2-10
2-1-6. Buzzer Part
Check the connection
status of LCD connector
HDC200
There is no sound from buzzer
Check voltage of C305
on LCD PCB ≥3.5V?
reconnect HDC200
Resolder or change
C305, R304, U1, ZD302
on LCD PCB
END
No
Yes
No
Yes
Replace buzzer
1
Yes
2

SGH-X150 Flow Chart of Troubleshooting
2-11
Main PCB
1
LCD PCB
2

SGH-X150 Flow Chart of Troubleshooting
2-12
2-1-7. LCD backlight
Backlight ON "TIME"
mode in the menu?
Backlight does not work
Check connecting
between PBA and LCD
connector
Select backlight "15 sec" mode
Check FPCB
END
No
Yes
No
Check U204 pin #1
(C225) = 10V ? Check the LCD
Yes
Yes
No
3FB
GND
2
SW 6
5
VIN
U204
C224 TA223
VBAT
L201
R242
C225
R256
R257
R241 LED_ENLED-
LED+

SGH-X150 Flow Chart of Troubleshooting
2-13
2-2-1. GSM Rx
Normal condition
catch the
channel ?
Check PAM100
pin 12 ≥-65
dbm ?
Check U102
pin 21,22 ≥
-65dBm ?
Yes
No
No
Check PAM100
pin 16 ≥-65
dbm ?
Yes
No
Yes
Check ANT, L102,C103,C104,L113
Resolder or change
RFS100, C102,L100,L101,L111
Resolder or change
PAM100
Resolder or change
F101,C105,C109,L104
Resolder or change
UCP200
CONTINOUS RX ON
RF INPUT : 62CH
AMP : -50dbm
Check U102
pin 13 = 2.9V
Yes
Resolder or change
U107
Yes
No
No
1
2
3
4
5
2-2. RF

SGH-X150 Flow Chart of Troubleshooting
2-14
5
1
2
3
4

SGH-X150 Flow Chart of Troubleshooting
2-15
2-2-2. DCS Rx
Normal condition
catch the
channel ?
Check PAM100
pin 12 ≥-65
dbm ?
Check U102
pin 19,20 ≥
-65dBm ?
Yes
No
No
Check PAM100
pin 18 ≥-65
dbm ?
Yes
No
Yes
Check ANT, L102,C103,C104,L113
Resolder or change
RFS100, C102,L100,L101,L111
Resolder or change
PAM100
Resolder or change
F102,C117,C118,L105
Resolder or change
UCP200
CONTINOUS RX ON
RF INPUT : 698CH
AMP : -50dbm
Check U102
pin 13 = 2.9V
Yes
Resolder or change
U107
Yes
No
No
1
2
3
4
5

SGH-X150 Flow Chart of Troubleshooting
2-16
1
2
3
4
5