Samsung SGH-P738 service manual.pdf

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GSM TELEPHONE
SGH-P738
GSM TELEPHONE
1.
2.
3.
4.
5.
6.
CONTENTS
Specification
Flow Chart of Troubleshooting
Exploded Views and Parts List
Electrical Parts List
PCB Diagrams
Block Diagrams
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.
ⓒ
Samsung Electronics Co.,Ltd. Nov. 2004
Printed in South Korea.
Code No.: GH68-06167A
BASIC.
1. SGH-P738 Specification
1. GSM General Specification
GSM900
Phase 1
Freq. Band [MHz]
Uplink/Downlink
ARFCN range
Tx/Rx spacing
Mod. Bit rate /
Bit Period
Time Slot Period /
Frame Period
Modulation
MS Power
Power Class
Sensitivity
TDMA Mux
Cell Radius
890~915
935~960
1~124
45MHz
270.833kbps
3.692us
576.9us
4.615ms
0.3GMSK
33dBm~13dBm
5pcl ~ 15pcl
-102dBm
8
35Km
EGSM 900
Phase 2
880~915
925~960
0~124 & 975~1023
45MHz
270.833kbps
3.692us
576.9us
4.615ms
0.3GMSK
33dBm~5dBm
5pcl ~ 19pcl
-102dBm
8
35Km
DCS 1800
Phase 1
1710~1785
1805~1880
512~885
95MHz
270.833kbps
3.692us
576.9us
4.615ms
0.3GMSK
30dBm~0dBm
0pcl ~ 15pcl
-100dBm
8
2Km
1-
1
SGH-P738 Speclflcation
2. GSM Tx Power Class
Tx Power
control level
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
GSM900
33
±
3 dBm
31
±
3 dBm
29
±
3 dBm
27
±
3 dBm
25
±
3 dBm
23
±
3 dBm
21
±
3 dBm
19
±
3 dBm
17
±
3 dBm
15
±
3 dBm
13
±
3 dBm
11
±
3 dBm
9
±
3 dBm
7
±
3 dBm
5
±
3 dBm
Tx Power
control level
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
DCS1800
30±3 dBm
28±3 dBm
26±3 dBm
24±3 dBm
22±3 dBm
20±3 dBm
18±3 dBm
16±3 dBm
14±3 dBm
12±4 dBm
10±4 dBm
8±4 dBm
6±4 dBm
4±4 dBm
2±5 dBm
0±5 dBm
1-
2
2. SGH-P738 Flow Chart of Troubleshooting and Circuit Diagrams
1. Power On
'Power ON' does not work
check the current
consumption more
than 100mA
Yes
No
Download again
Check the Voltage
of the Battery more
than 3.5V
Yes
No
Charge the battery
Check the pin11 of
U101 is more than
2.8V
No
Check
"Power On"
key?
No
check keypad
Yes
Yes
check U101 and C117
Check U101
pin 39 =
2.8V
Yes
No
U101 pin9
= 1.8V
Yes
No
Check U101 and C116
Check the Initial Operation
Yes
END
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1

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