SGH-D500-SM.pdf

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GPRS TELEPHONE
SGH-D500
GPRS TELEPHONE
1.
2.
3.
4.
5.
6.
7.
CONTENTS
Specification
Circuit Description
Exploded Views and Parts List
Electrical Parts List
Block Diagrams
PCB Diagrams
Flow Chart of Troubleshooting
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.:
GH68-05955A
BASIC.
1 . SGH - D 5 0 0
S p e c if ic a t io n
1. GSM General Specification
GS M9 0 0
Ph a se 1
F r eq . B a n d [M Hz ]
Up l in k / Do w n li n k
A RF C N r a n g e
8 9 0 ~9 1 5
9 3 5 ~9 6 0
1 ~1 2 4
E GS M 9 0 0
Ph a se 2
8 8 0 ~9 1 5
9 2 5 ~9 6 0
0~124 &
9 7 5 ~1 0 2 3
4 5 MHz
2 7 0 .8 3 3 k b p s
3 .6 9 2 u s
5 7 6 .9 u s
4 .6 1 5 m s
0 .3 G MS K
3 3 d Bm ~5 d B m
5pcl ~ 19pcl
- 1 0 2 d Bm
8
3 5 Km
DC S 1 8 0 0
P h as e 1
1 7 1 0 ~1 7 8 5
1 8 0 5 ~1 8 8 0
5 1 2 ~8 8 5
PC S1 9 0 0
1 8 5 0 ~1 9 1 0
1 9 3 0 ~1 9 9 0
5 1 2 ~8 1 0
8 0 MH z
2 7 0 .8 3 3 k b p s
3 .6 9 2 u s
5 7 6 .9 u s
4 .6 1 5 ms
0 .3 GM SK
3 0 d B m~0 d B m
0pcl ~ 15pcl
-100dBm
8
-
T x /R x s p ac in g
Mod. Bit rate
/ Bi t Pe r i o d
Ti me Sl o t Pe r i o d
/ F r am e P er io d
Mo d u l a ti o n
M S P o we r
Po w er C l as s
Se n si t iv i t y
TDM A M u x
C el l Ra d iu s
4 5 MHz
270.833kbps
3.692us
576.9us
4 .6 1 5 m s
0 .3 G MS K
3 3 d Bm ~5 d B m
5 p cl ~ 1 9 p c l
-102dBm
8
3 5 Km
9 5 M Hz
270.833kbps
3.692us
576.9us
4 .6 1 5 m s
0 .3 GM SK
3 0 d B m ~0 d B m
0pcl ~ 15pcl
-100dBm
8
2 Km
1- 1
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Specification
2. GSM TX power class
TX Power
control level
5
GSM900
TX Power
control level
0
DCS1800
TX Power
control level
0
PCS1900
33¡¾3 dBm
30¡¾3 dBm
30¡¾3 dBm
6
31¡¾3 dBm
1
28¡¾3 dBm
1
28¡¾3 dBm
7
29¡¾3 dBm
2
26¡¾3 dBm
2
26¡¾3 dBm
8
27¡¾3 dBm
3
24¡¾3 dBm
3
24¡¾3 dBm
9
25¡¾3 dBm
4
22¡¾3 dBm
4
22¡¾3 dBm
10
23¡¾3 dBm
5
20¡¾3 dBm
5
20¡¾3 dBm
11
21¡¾3 dBm
6
18¡¾3 dBm
6
18¡¾3 dBm
12
19¡¾3 dBm
7
16¡¾3 dBm
7
16¡¾3 dBm
13
17¡¾3 dBm
8
14¡¾3 dBm
8
14¡¾3 dBm
14
15¡¾3 dBm
9
12¡¾4 dBm
9
12¡¾4 dBm
15
13¡¾3 dBm
10
10¡¾4 dBm
10
10¡¾4 dBm
16
11¡¾5 dBm
11
8¡¾4dBm
11
8¡¾4dBm
17
9¡¾ dBm
5
12
6¡¾4 dBm
12
6¡¾4 dBm
18
7¡¾ dBm
5
13
4¡¾4 dBm
13
4¡¾4 dBm
19
5¡¾ dBm
5
14
2¡¾5 dBm
14
2¡¾5 dBm
15
0¡¾5 dBm
15
0¡¾5 dBm
1- 2
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2 . SGH - D 5 0 0
C ir c u it
D e s c r ip t io n
1. SGH-D500 RF Circuit Description
1) RX PART
1. ANTENNA SWITCH (U100 SWICHPLEXER)
¡æ Switching Tx, Rx path for GSM900, DCS1800 and PCS1900 by logic controlling.
2. ANTENNA SWITCH Control Losic (U100) ¡æ Truth Table
VC1
Tx Mode (GSM900)
Tx Mode (DCS1800/1900)
Rx Mode (GSM900)
Rx Mode (DCS1800)
Rx Mode (PCS1900)
L
L(H)
L
L
H
VC2
H
L
L
L
L
VC3
L
H
L
L
L
3. FILTER
To convert Electromagnetic Field Wave to Acoustic Wave and then pass the specific frequency band.
- GSM FILTER (F100) ¡æ For filtering the frequency band between 925 and 960 MHz
- DCS FILTER (F102) ¡æ For filtering the frequency band between 1805 and 1880 MHz.
- PCS FILTER (F101) ¡æ For filtering the frequency band between 1930 and 1990 MHz.
4. VC-TCXO (U101)
This module generates the 26MHz reference clock to drive the logic and RF.
It is turned on when the supply voltage Vcc(SYN) is applied.
After buffering a reference clock of 26MHz is supplied to the other parts of the system
through the transceiver pin CLKOUT.
5. TRANSCEIVER (U102)
This chip is fully integrated GSM GPRS quad-band transceiver with transmit baluns, loop filters and most of the
passive component in it.
And also fully integrated fractional N RF synthesizer with AFC control possibility, RF VCO with integrated supply
regulator. Semi integrated reference oscillator with integrated supply regulator.
RF Receiver front-end amplifies the E-GSM900, DCS1800 and PCS1900 aerial signal, convert the chosen channel
down to a low IF of 100kHz.
In IF section, further amplifies the wanted channel output level to the desired value and rejects DC.
2) TX PART
The transmitter is fully differential using a direct up conversion architecture. It consists of a signal side band
power up mixer. Gain is controlled by 6 dB via 3-wire serial bus programing. The fully integrated VCO and power
mixer achieve LO suppression, quadrature phase error, quadrature amplitude balance and low noise floor specification.
Output matching/balun components drive a standard 50 ohms single ended load.
2- 1
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