SERVICE_MANUAL_P300.pdf

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GSM TELEPHONE
SGH-P300
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
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1. SGH-P300 Specification
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
-
1- 1
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SGH-P300 Speclflcation
1-2. GSM Tx Power Class
TX Power
control level
GSM900
TX Power
control level
DCS1800
TX Power
control level
PCS1900
5
33±2 dBm
0
30±3 dBm
0
30±3 dBm
6
31±2 dBm
1
28±3 dBm
1
28±3 dBm
7
29±2 dBm
2
26±3 dBm
2
26±3 dBm
8
27±2 dBm
3
24±3 dBm
3
24±3 dBm
9
25±2 dBm
4
22±3 dBm
4
22±3 dBm
10
23±2 dBm
5
20±3 dBm
5
20±3 dBm
11
21±2 dBm
6
18±3 dBm
6
18±3 dBm
12
19±2 dBm
7
16±3 dBm
7
16±3 dBm
13
17±2 dBm
8
14±3 dBm
8
14±3 dBm
14
15±2 dBm
9
12±4 dBm
9
12±4 dBm
15
13±2 dBm
10
10±4 dBm
10
10±4 dBm
16
11±3 dBm
11
8±4dBm
11
8±4dBm
17
9±3dBm
12
6±4 dBm
12
6±4 dBm
18
7±3 dBm
19
5±3 dBm
13
4±4 dBm
13
4±4 dBm
14
2±5 dBm
14
2±5 dBm
15
0±5 dBm
15
0±5 dBm
1- 2
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2. SGH-P300 Flow Chart of Troubleshooting and Circuit Diagrams
2-1.Baseband
2-1-1. Power ON
'Power On' does not work
Yes
Check the current
consumption more
than 100mA
No
Download again
Yes
Check the VBAT
more than 3.3V
No
Charge the Battery
Yes
①
Check the
VLDO7_1.8V
of UCP300 is more
than 1.8V
No
Check UCP300 and C310
Yes
②
Check VCCD_1.6
of U300=1.6
No
Check C337 of UCP300
and U300
Yes
③
Check VRF of
UCP300=2.8V
No
Check UCP300
and C313
Yes
④
Check TCX100 pin#6
Freq = 13MHz
Vp-p > 0.8V
No
Checktheclockgeneration
circuit( TCX100 )
Yes
Check the initial operation
Yes
END
2- 1
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
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SGH-P300 Flow Chart of Troubleshooting and Circuit Diagrams
VBAT
VCCD_1.8CON
VCCD_1.6
R300
U300
1
5
L300
VIN
SW
2
GND
3
EN
FB
4
TA300
C305
2- 2
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
348577596.059.png 348577596.060.png 348577596.062.png 348577596.063.png 348577596.064.png 348577596.065.png

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