Samsung SCH-210 service manual, samsung service manuals schematy serwisowki
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CDMA PORTA B L E
C E L L U L A R T E L E P H O N E
SCH-210
S E RVICE
Manual
CDMA PORTABLE CELLULAR TELEPHONE
CONTENTS
1. General Introduction
2. Specification
3. Installation
4. NAM Programming
5. Product Support Tools
6. Circuit Description
7. Troubleshooting
8. Exploded Views and Parts List
9. PCB Diagrams
10. Electrical Parts List
11. Block & Circuit Diagrams
Samsung Electronics Co.,Ltd.
GH68-60756A
1. General Introduction
The SCH-210 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:
IS-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 Systems
IS-98A : Standards for Dual-Mode Wideband Spread Spectrum Cellular Mobile Station
IS-126 : Mobile Station Loopback Service Options Standard
SCH-210 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
1-2
Samsung Electronics - Contents may change without notice.
2. Specification
2-1 General
Frequency Range
Digital Mode
Analog Mode
Transmitter
: 824.64 ~ 848.37 MHz
824.04 ~ 848.97 MHz
Receiver
: 869.64 ~ 893.37 MHz
869.04 ~ 893.97 MHz
Channel Spacing
: 1.23 MHz
30 kHz
Number of Channels
: 20 FA
832 CHs
Duplex Spacing
: 45 MHz
Frequency Stability
: 2.5 ppm ( 30
~
£
60
-22
~ 140 )
Operating Temperature
: 20
~
£
50 ( 4 ~ 122 )
Operating Voltage
HHP
: 7.2V DC ( 10 )
Hands-free
: 13.7V DC ( 10 )
Size and Weight
including standard battery
: 130 51 27.5 mm, 205 g (5.12 2 0.94 inch, 7.2 oz)
including extended-life battery
: 130 51 37 mm, 207 g (5.12 2 1.46 inch, 7.4 oz)
Operating Time
Digital mode
Standby Time : about 50 ~ 55 hours (with standard battery)
: about 85 ~ 90 hours (with extended-life battery)
Talk Time
: about 150 min (with standard battery)
: about 250 min (with extended-life battery)
Analog
Standby Time : about 10 ~ 12 hours (with standard battery)
: about 16 ~ 18 hours (with extended-life battery)
Talk Time
: about 100 min (with standard battery)
: about 170 min (with extended-life battery)
2-2 Analog Mode
TRANSMITTER
RF output power
: 0.6 W ( 2/ 4 dB)
Carrier ON/OFF Conditions
"ON" Condition
: within 3 dB of specification output (in 2mS)
"OFF" Condition
: below 60 dBm (in 2mS)
Compressor
Compression Rate
: 2:1
Attack Time
: 3 mS
Recovery Time
: 13.5 mS
Reference Input
: Input level for producing a nominal 2.9 kHz peak frequency
deviation of transmitted carrier
Samsung Electronics - Contents may change without notice.
2-1
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