Samsung SCH-211 service manual, samsung service manuals schematy serwisowki
[ Pobierz całość w formacie PDF ]
CDMA PORTABLE
CELLULAR TELEPHONE
SCH-211
SERVICE
Manual
CDMA PORTABLE CELLULAR TELEPHONE
CONTENTS
1. General Introduction
2. Specification
3. Installation
4. NAM Programming
5. Circuit Description
SEN
D
EN
D
6. Troubleshooting
1
2
3
AB
C
D
EF
4
5
6
GHI
JKL
MN
O
7. Exploded Views and Parts List
7
8
0
PQRS
TUV
9
OPER
PW
R
C
LR
OK
M
ENU
8. PCB Diagrams
9. Electrical Parts List
10. Block & Circuit Diagrams
ELECTRONICS
Samsung Electronics Co.,Ltd.
GH68-00335A
Specification
1
Samsung Electronics - Contents may change without notice.
1. General Introduction
The SCH-211 cellular phone functions as both analog cellular phone working in AMPS (Advanced Mobile
Phone Service) mode and digital cellular phone working in CDMA (Code Division Multiple Access) mode.
CDMA type digital mode applies DSSS (Direct Sequential Spread spectrum) mode which first came to be
used in the military.
The DSSS reduces channel cross talk and allow to use one frequency channel by multiple users in the same
specific area, resulting in increase of channel capacity to about ten times compared to that of analog mode
currently used.
Soft/Softer Handoff, Hard Handoff, and Dynamic RF Power Control technologies are combined into this
phone to reduce the call drop while usage.
CDMA digital cellular network consists of MSO (Mobile Switching Office), BSC (Base Station Controller), BTS
(Base Station Transmission System), and MS (Mobile Station). MS meets the specifications of the below:
¤ UIS-95A : Mobile Station-Base Station Compatibility Standard for Dual-Mode Wideband Spread Spectrum
Cellular System
¤ UIS-96A : Speech Service Option 1 Standard for Dual-Mode Wideband Spread Spectrum Cellular Systems
¤ UIS-98A : Standards for Dual-Mode Wideband Spread Spectrum Cellular Mobile Station
¤ UIS-126 : Mobile Station Loopback Service Options Standard
SCH-211 is composed of main handset, rapid charger, cradle, two batteries (1300 mAh, 850 mAh), hands-free
kit, and travel charger. Hands-Free Kit is designed to be operated in half-duplex mode taking turn-around
delay between the phone and the system into account.
Samsung Electronics-Contents may change without notice.
1-1
General Introduction
MEMO
1-2
Samsung Electronics - Contents may change without notice.
[ Pobierz całość w formacie PDF ]