Samsung SGH-D500E service manual, samsung service manuals schematy serwisowki
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GPRS/EDGE TELEPHONE
SGH-D500
SGH-D500E
GPRS/EDGE TELEPHONE
CONTENTS
1. Specification
2. Circuit Description
3. Exploded Views and Parts List
4. Electrical Parts List
5. Block Diagrams
6. PCB Diagrams
7. Flow Chart of Troubleshooting
ⓒ
Samsung Electronics Co.,Ltd. Dec. 2004
Printed in South Korea.
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.
Code No.:
GH68-05955A
BASIC.
1. GSM General Specification
G S M 9 0 0
P h a s e 1
E G S M 9 0 0
P h a s e 2
D C S 1 8 0 0
P h a s e 1
P C S 1 9 0 0
F r e q . B a n d [ M H z ]
U p l i n k / D o w n l i n k
8 9 0 ~ 9 1 5
9 3 5 ~ 9 6 0
8 8 0 ~ 9 1 5
9 2 5 ~ 9 6 0
1 7 1 0 ~ 1 7 8 5
1 8 0 5 ~ 1 8 8 0
1 8 5 0 ~ 1 9 1 0
1 9 3 0 ~ 1 9 9 0
A R F C N r a n g e
1 ~ 1 2 4
0 ~ 1 2 4 &
9 7 5 ~ 1 0 2 3
5 1 2 ~ 8 8 5
5 1 2 ~ 8 1 0
T x / R x s p a c i n g
4 5 M H z
4 5 M H z
9 5 M H z
8 0 M H z
M o d . B i t r a t e
/ B i t P e r i o d
2 7 0 . 8 3 3 k b p s
3 . 6 9 2 u s
2 7 0 . 8 3 3 k b p s
3 . 6 9 2 u s
2 7 0 . 8 3 3 k b p s
3 . 6 9 2 u s
2 7 0 . 8 3 3 k b p s
3 . 6 9 2 u s
T i m e S l o t P e r i o d
/ F r a m e P e r i o d
5 7 6 . 9 u s
4 . 6 1 5 m s
5 7 6 . 9 u s
4 . 6 1 5 m s
5 7 6 . 9 u s
4 . 6 1 5 m s
5 7 6 . 9 u s
4 . 6 1 5 m s
M o d u l a t i o n
0 . 3 G M S K
0 . 3 G M S K
0 . 3 G M S K
0 . 3 G M S K
M S P o w e r
3 3 d B m ~ 5 d B m
3 3 d B m ~ 5 d B m
3 0 d B m ~ 0 d B m
3 0 d B m ~ 0 d B m
P o w e r C l a s s
5 p c l ~ 1 9 p c l
5pcl ~ 19pcl
0pcl ~ 15pcl
0pcl ~ 15pcl
S e n s i t i v i t y
- 1 0 2 d B m
- 1 0 2 d B m
- 1 0 0 d B m
- 1 0 0 d B m
T D M A M u x
8
8
8
8
C e l l R a d i u s
3 5 K m
3 5 K m
2 K m
-
SAMSUNG Proprietary-Contents may change without notice
2. GSM TX power class
TX Power
control level
GSM900
TX Power
control level
DCS1800
TX Power
control level
PCS1900
5
33ꆾ3 dBm
0
30ꆾ3 dBm
0
30ꆾ3 dBm
6
31
ꆾ
3 dBm
1
28ꆾ3 dBm
1
28
ꆾ
3 dBm
7
29ꆾ3 dBm
2
26
ꆾ
3 dBm
2
26ꆾ3 dBm
8
27ꆾ3 dBm
3
24ꆾ3 dBm
3
24
ꆾ
3 dBm
9
25ꆾ3 dBm
4
22ꆾ3 dBm
4
22ꆾ3 dBm
10
23ꆾ3 dBm
5
20ꆾ3 dBm
5
20ꆾ3 dBm
11
21
ꆾ
3 dBm
6
18
ꆾ
3 dBm
6
18
ꆾ
3 dBm
12
19ꆾ3 dBm
7
16ꆾ3 dBm
7
16ꆾ3 dBm
13
17
ꆾ
3 dBm
8
14
ꆾ
3 dBm
8
14ꆾ3 dBm
14
15ꆾ3 dBm
9
12ꆾ4 dBm
9
12ꆾ4 dBm
15
13
ꆾ
3 dBm
10
10
ꆾ
4 dBm
10
10
ꆾ
4 dBm
16
11ꆾ5 dBm
11
8
ꆾ
4dBm
11
8ꆾ4dBm
17
9
ꆾ
5 dBm
12
6ꆾ4 dBm
12
6ꆾ4 dBm
18
7ꆾ5 dBm
13
4
ꆾ
4 dBm
13
4ꆾ4 dBm
19
5ꆾ5 dBm
14
2ꆾ5 dBm
14
2
ꆾ
5 dBm
15
0
ꆾ
5 dBm
15
0ꆾ5 dBm
SAMSUNG Proprietary-Contents may change without notice
1. SGH-D500,SGH-D500E RF Circuit Description
1) RX PART
1. ANTENNA SWITCH (U100 SWICHPLEXER)
ꇦ Switching Tx, Rx path for GSM900, DCS1800 and PCS1900 by logic controlling.
2. ANTENNA SWITCH Control Losic (U100) ꇦ Truth Table
VC1
VC2
VC3
Tx Mode (GSM900)
L
H
L
Tx Mode (DCS1800/1900)
L(H)
L
H
Rx Mode (GSM900)
L
L
L
Rx Mode (DCS1800)
L
L
L
Rx Mode (PCS1900)
H
L
L
3. FILTER
To convert Electromagnetic Field Wave to Acoustic Wave and then pass the specific frequency band.
- GSM FILTER (F100)
ꇦ
For filtering the frequency band between 925 and 960 MHz
- DCS FILTER (F102)
ꇦ
For filtering the frequency band between 1805 and 1880 MHz.
- PCS FILTER (F101)
ꇦ
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.
SAMSUNG Proprietary-Contents may change without notice
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