Samsung SCH-2500 service manual.pdf

(5874 KB) Pobierz
Samsung SCH-2500 service manual
PORTABLE CELLULAR
TELEPHONE
SCH-2500 Series
SERVICE
Manual
PORTABLE CELLULAR TELEPHONE
CONTENTS
1. General Introduction
2. Specification
3. Installation
4. Nam Programming
5. Circuit Description
6. Trouble shooting
7. Exploded Views and its Parts List
8. Electrical Parts List
9. PCB Diagrams
10. Block Diagrams
11. Circuit Diagram
SAMSUNG Proprietary - Contents may change without notice
141229417.034.png 141229417.035.png 141229417.036.png 141229417.037.png 141229417.001.png 141229417.002.png
 
141229417.003.png 141229417.004.png 141229417.005.png 141229417.006.png 141229417.007.png 141229417.008.png 141229417.009.png 141229417.010.png 141229417.011.png 141229417.012.png 141229417.013.png 141229417.014.png 141229417.015.png 141229417.016.png 141229417.017.png 141229417.018.png 141229417.019.png 141229417.020.png 141229417.021.png 141229417.022.png 141229417.023.png 141229417.024.png 141229417.025.png
Samsung Electronics Co.,Ltd.
GH68-00621A
1999. 9. Rev. 1.0
141229417.026.png
1. General Introduction
The SCH-25XX DBTM phone functions as analog phone working in AMPS (Advanced Mobile Phone Service)
mode, digital cellular phone working in CDMA (Code Division Multiple Access) mode, and digital phone
working in PCS (Personal Communication Service) mode.
The following standards and minimum performance standards shall be met or exceeded by each subscriber
unit.
Air Interface
The Subscriber Unit shall be Triple mode and Dual band in compliance with ANSI J-STD-008 and TIA/EIA IS-
98A.
MS(Mobile Station) meets the specifications of the below;
ANSl J-STD-008 : Personal Station-base Station Compatibility Requirements for 1.8 to 2.0 GHz CDMA
PCS.
ANSl J-STD-018 : Recommended Minimum Performance Requirements for 1.8 to 2.0 GHz CDMA Personal
Stations.
CDG Ref. Document #27 : High Rate Speech Service Option for Wideband Spread Spectrum Systems.
TlA/ElA lS-95A : Mobile Station-Base Station Compatibility Standard for Dual-Mode Wideband Spread
Spectrum Cellular System.
IS-96A : Speech Service Option 1 Standard for Dual-Mode Wideband Spread-Spectrum Cellular Syatems.
IS-98A : Standard for Dual-Mode Wideband Spread Spectrum Cellular Mobile Station.
IS-126 : Mobile Station Loopback Service Options Standard.
SCH-25XX is composed of main handset, rapid charger, cradle, two batteries (1000 mAh, 1600 mAh), hand-
free kit, and travel charger. Hands-free Kit is designed to be operated in full-duplex mode taking turn-around
delay between the phone and the system into account.
SAMSUNG Proprietary - Contents may change without notice
1-1
141229417.027.png 141229417.028.png 141229417.029.png
General Introduction
Memo
1-2
SAMSUNG Proprietary - Contents may change without notice
141229417.030.png 141229417.031.png
2. SPECIFICATION
2-1. General
ITEM
PCS
CDMA
AMPS
Tx Freq. range
1850 ~ 1910MHz
824 ~ 849MHz
824~849MHz
Rx Freq. range
1930 ~1990MHz
869 ~894MHz
869 ~894MHz
Channel Bandwidth
1.23 MHz
1.23 MHz
30 KHz
Channel Spacing
50 KHz
30 KHz
30 KHz
Number of Channel
1200
20FA
832
Duplex Separation
80 MHz
45 MHz
45 MHz
Type of Emission
1M25F9W
40K0F8W,40K0F1D
40K0F8W,40K0F1D
In/Output Impedance
50Ω
50Ω
50Ω
Tx Intermediate Freq.
130.38MHz
130.38MHz
130.38MHz
Rx Intermediate Freq.
210.38MHz
85.38MHz
85.38MHz
Tx Local Freq.
lst(F TX -130.38MHz)
lst(F TX +130.38MHz)
lst(F TX +130.38MHz)
2nd(260.76MHz)
2nd(260.76MHz)
2nd(260.76MHz)
Rx Local Freq
lst(F RX -210.38MHz)
lst(F RX +85.38MHz)
lst(F RX +85.38MHz)
2nd(420.76MHz)
2nd(170.76MHz)
2nd(170.76MHz)
TCXO freq
19.68MHz
19.68MHz
19.68MHz
Freq. Stability
(F RX -80MHz)±150Hz
(F RX -45MHz)±300Hz
±2.5ppm
Operating Temperature
-30 o C ~ +60 o C
-30 o C ~ +60 o C
-30 o C ~ +60 o C
Supply Voltage
+3.6V
Size and Weight
STD : 122cm X 50cm X 26cm,
161 g,
1000 mA
MID : 122cm X 50cm X 30cm,
179 g,
1600 mA
SAMSUNG Proprietary - Contents may change without notice
2-1
141229417.032.png 141229417.033.png

Plik z chomika:

Inne pliki z tego folderu:

Inne foldery tego chomika:

Zgłoś jeśli naruszono regulamin