Samsung SGH SGH X200 User manual

GSM TELEPHONE
SGH-X200
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

1. SGH-X200 Specification
1-2
1-1. GSM General Specification
GSM900
Phase 1
EGSM 900
Phase 2
DCS1800
Phase 1 PCS1900
Freq. Band[MHz]
Uplink/Downlink
890~915
935~960
880~915
925~960
1710~1785
1805~1880
1850~1910
1930~1990
ARFCN range 1~124 0~124 &
975~1023 512~885 512~810
Tx/Rx spacing 45MHz 45MHz 95MHz 80MHz
Mod. Bit rate/
Bit Period
270.833kbps
3.692us
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
576.9us
4.615ms
Modulation 0.3GMSK 0.3GMSK 0.3GMSK 0.3GMSK
MS Power 33dBm~13dBm 33dBm~5dBm 30dBm~0dBm 30dBm~0dBm
Power Class 5pcl ~ 15pcl 5pcl ~ 19pcl 0pcl ~ 15pcl 0pcl ~ 15pcl
Sensitivity -102dBm -102dBm -100dBm -100dBm
TDMA Mux 8 8 8 8
Cell Radius 35Km 35Km 2Km -

SGH-X200 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
TX Power
control level PCS1900
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-X200 Flow Chart of Troubleshooting
2-19
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
Checktheclocksignalat
pin #4 of OSC100
Freq=26Mhz,
Vrms >=300mV
No Check the clock generation
circuit OSC100
Yes
2

SGH-X200 Flow Chart of Troubleshooting
2-2
1
2
VCCA_2.9V
C152 C153
C162
C155
VBAT
VCCD_2.9VVRF_2.9V
5
G
1
S
S
V
4
K
2
S
S
V
2
R
3
S
S
V
6
P
4
S
S
V
B
D
D
V
1
1
N
D
D
D
V
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
R10
UP_RST
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
K14
SIM_CLK
J11
SIM_IO K11
SIM_RST
N9
UP_CLK
P10
UP_IO
5
C
N1
2
6
C
N
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
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
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
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
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
DB14
D2 DB15
F4 DB8
F1 DB9
6
F
F2 DB10
F3 DB11
E2 DB12
E3 DB13
D3
3
1
D
3
C
D
A
_
X
U
A
SIMDATA
SIMRST
SIM_RST
SIM_IO
SIM_CLK
SIMCLK
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-X200 Flow Chart of Troubleshooting
2-3
2-1-2. Initial
Initial Failure
check the pin
RSTB of U201 is
LOW?
Check U201
No
Yes
Yes
END
Yes
Check the Initial Operation
Yes
Check
R177,R178,R131,C127
No
check the pin CKI
of U201 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-X200 Flow Chart of Troubleshooting
2-4
3
2
4
1
CKO/IACK/ERAMHI
VCCD_1.8V
VRTC_3VVCCD_1.8V
C203 C202
VCCD_2.9V C201
C200
F
E
R
V
X0
1
F
A
S
S
V0
1
E
L
L
P
D
_
S
S
V5
1
E
6
1
G
L
L
P
D
_
D
D
V
8
D
C
T
R
V
E
D
D
V
1
M
E
D
D
V
E
D
D
V2
U
8
P
E
D
D
V
E
D
D
V5
1
U
6
1
U
E
D
D
V
E
D
D
V6
1
N
6
1
E
E
D
D
V
E
D
D
V7
1
E
3
1
T
D
D
V
D
D
V6
1
R
7
1
R
D
D
V
D
D
V5
A
6
1
C
D
D
V
1
1
C
A
D
D
V
E
D
D
V1
B
4
1
B
TDI
TDO F12
TMS G12
F15
TRST
2
E
D
D
V
D
D
V1
G
1
R
D
D
V
D
D
V4
R
L12
2
1
C
B
T
S
R
TCK H13
H12
I
K
C7
1
F
G15
VCCD_2.9V
TR_RST
VREF
TR_RST
CLK13M_TR
R178
C129
C127
R133
R131
R177
CLK13M_YMU
CLK13M_MC
CLK13M_TR
13M_OUT

SGH-X200 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 CN103?
Check the U107
Check the U107 & U201
END
No
Yes
No
Yes
1
2
Check the SIM Card
The voltage is 2.8V
at the pin#1 of CN103
1
2
2
C138 C141C140C139
C
C
V
5P
P
V
K
L
C
3
D
N
G
4
O
/
I
6
C
N
7
8C
N
9C
N
C
N
0
1
C
C
V
1
2
CN103
C142
SIM_IO
SIM_RST
VSIM
SIM_CLK

SGH-X200 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,C185,R148,R149,R150,R151,
R152,R153,C156,C157,C158,C160,C161
No
Is microphone OK?
Yes
Check U107
No
1
2
C185
11
22
L107
R168
R152
10K
VCCA_2.9V
R169
C156
R148
R153
10PF
C157
50V
C158
C161
R149
R150
C160
R151
MIC+
MICINN
MICOUTN
MICOUTP
MICINP

SGH-X200 Flow Chart of Troubleshooting
2-7
1
1
2

SGH-X200 Flow Chart of Troubleshooting
2-8
2-1-5. Speaker Part
Check the connection
status of LCD connector
CN201
There is no sound from speaker
Are there any signal at
the speaker pad on LCD
PCB?
reconnect CN201
Replace the speaker module
END
No
Yes
No
No
Yes
Check R162, R163 of
U108. Voltage is ≥1V?
1
Yes
Check U107
2

SGH-X200 Flow Chart of Troubleshooting
2-9
1
2

SGH-X200 Flow Chart of Troubleshooting
2-10
2-1-6. LCD backlight
Backlight ON "TIME"
mode in the menu?
Backlight does not work
Check conecting
between PBA and LCD
conector
Select backlight "15 sec" mode
Check FPCB
END
No
Yes
No
Check U204 pin #7 =
10V ? Check the LCD
Yes
Yes
No
1GND
D
N
G
9
3ILED
7
OUT
5
PGND
6
SW
VIN 8
U204
EN
2
FB
4
C223
R241
VBAT
R242
L201
R257
C224
R258
C225
LED+
LED-
LED_EN

SGH-X200 Flow Chart of Troubleshooting
2-11
2-2. RF
2-2-1. GSM Rx
Normal condition
catch the
channel ?
Check U100
pin 12 ≥-65
dbm ?
Check U102
pin 21,22 ≥-
65dBm ?
Yes
No
No
Check U100
pin 16 ≥-65
dbm ?
Yes
No
Yes
Check ANT, R198,R199,C104,L113
Resolder or change
CN100, C102,L100,L101,L111
Resolder or change
U100
Resolder or change
F101,C105,C109,L104
Resolder or change
U201
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

SGH-X200 Flow Chart of Troubleshooting
2-12
1
2
3
4
5

SGH-X200 Flow Chart of Troubleshooting
2-13
2-2-2. DCS Rx
Normal condition
catch the
channel ?
Check U100
pin 12 ≥-65
dbm ?
Check U102
pin 19,20 ≥-
65dBm ?
Yes
No
No
Check U100
pin 18 ≥-65
dbm ?
Yes
No
Yes
Check ANT, R198,R199,C104,L113
Resolder or change
CN100, C102,L100,L101,L111
Resolder or change
U100
Resolder or change
F102,C117,C118,L105
Resolder or change
U201
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-X200 Flow Chart of Troubleshooting
2-14
1
2
3
4
5

SGH-X200 Flow Chart of Troubleshooting
2-15
2-2-3. PCS Rx
Normal condition
catch the
channel ?
Check U100
pin 12 ≥-65
dbm ?
Check U102
pin 17,18 ≥-
65dBm ?
Yes
No
No
Check U100
pin 20 ≥-65
dbm ?
Yes
No
Yes
Check ANT, R198,R199,C104,L113
Resolder or change
CN100, C102,L100,L101,L111
Resolder or change
U100
Resolder or change
F103,C122,C125,L106
Resolder or change
U201
CONTINOUS RX ON
RF INPUT : 660CH
AMP : -50dbm
Check U102
pin 13 = 2.9V
Yes
Resolder or change
U107
Yes
No
No
1
2
3
4
5

SGH-X200 Flow Chart of Troubleshooting
2-16
1
2
3
4
5

SGH-X200 Flow Chart of Troubleshooting
2-17
R198
L113
C106
C105
C109
C108
C107
C104
A
2
3C
1G
4G
VBS2
10
1
C
C
V
3
2
C
C
V
9VMOD_EN
8VRAMP
6VTX
CN100
GSM850|900TXIN
20RX1
18
RX2
16
RX3
14
RX4
2
1
V
7VBATT
4VBS1
5
12
ANT
1DCS|PCSIN
3
11
D
N
G
5
12
D
N
G
7
13
D
N
G
9
14
D
N
G
1
25
D
N
G
11
U100
C101
C102
C125
C122
C118
C117
C100
5
G
IN
1
3
OUT
OUT 4
F103
2
G
L100
L101
L104
L110 L111
F101
2
G
5
G
IN
1
3
OUT
OUT 4
F102
2
G
5
G
IN
1
3
OUT
OUT 4
R199
L106
L105
GSM_LNA_IN_N
GSM_LNA_IN_P
DCS_LNA_IN_P
DCS_LNA_IN_N
PCS_LNA_IN_P
PCS_LNA_IN_N