Samsung SCH-611 User manual

SERVICE
CDMA Cellular Phone
SCH-611
Manual
CDMA Cellular Phone CONTENTS
1. General Introduction
2. Specification
3. Installation
4. NAM Programming
5. Product Support Tools
6. Troubleshooting
7. Exploded view and its Part List
8. Electrical Parts List
9. Block diagram
10. PCB diagrams
11. Circuit diagrams

©Samsung Electronics Co.,Ltd. Oct. 99
Printed in Korea.
Code No.: GH68-00668A
BASIC.
ELECTRONICS

1. General Description
The SCH-611 cellular phone functions as 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
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1-1

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2-1
2. Specification
2-1 General
Frequency Range Digital Mode
Transmitter : 824 ~ 849 MHz
Receiver : 869 ~ 894 MHz
Channel Spacing : 1.23 MHz
Number of Channels : 20 FA
Duplex Spacing : 45 MHz
Frequency Stability : ±2.5 ppm (-30˚C ~ +60˚C, -4˚F ~ +140˚F)
Operating Temperature : -30˚C~+60˚C (-4˚F ~ +140˚F)
Operating Voltage
HHP : 3.6V DC (±10%)
Hands-free : 13.7V DC (±10%)
Operating Time
Digital Mode
Item Size Weight (g)
including slim battery 105 x 45 x 18 89
including standard battery 105 x 45 x 21 120
including extended battery 105 x 45 x 24 138
Item Standby Time Talk Time
slim battery up to 40 hours up to 80 hours
standard battery up to 75 hours up to 150 hours
extended battery up to 120 hours up to 240 hours

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2-2
Specification
2-2 Digital Mode
Waveform Quality 0.944 or more
Time Reference ±1uS or less
Rx Sensitivity and Dynamic Range -104 dBm, FER=0.5 % or less
-25 dBm, FER=0.5 % or less
Tx Output Power 280 mW (24.5 dBm)
Tx Frequency Deviation ±300 Hz or less
Occupied Band Width 1.32 MHz
Tx Conducted Spurious Emission 900 kHz : -42 dBc / 30 kHz below
1.98 MHz: -54 dBc / 30 kHz below
Minimum Tx Power Control below -50 dBm
-25 dBm: -57.0 dBm ~ -38.5 dBm
Open Loop Power Control -65 dBm: -17.5 dBm ~ + 1.5 dBm
-104 dBm: +18.0 dBm ~ +30.0 dBm
Standby Output Power below -61 dBm
Test1: ±24 dB or less
Test2: 0 mS ~ 2.5 mS
Colsed Loop Tx Power Control Range Test3: ±24 dB or more
Test4: ±24 dB or more
Test5: ±24 dB or more

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2-3
Specification
2-3 CDMA Debug Display Information (menu 8)
IN IDLE MODE
IN CONVERSATION MODE
1 : Sxxxxx : SID (System ldentification) toggle
Nxxxxx : NID (Network Identification) toggle
2 : SIx : Slot cycle index (lowest between the system and the phone will be used)
3 : Handset Status : 0 - Acquisition
1 - Synchronization
2 - Paging (Idle)
3 - Traffic Initialization
4 - Traffic Mode
5 - Exit
4 : T-xx : Tx adjust, Value ranges from +63 ~ -63dB
5 : Dxxx : sector power in dBm
6 : -xx : Ec/Io
7 : Pxxx : PN offset
8 : CHxxxx : channel number
9 : TEx : Tx vocoder rate (8 is full rate, 1 is 1/8th rate)
E : EVRC
V : 13k or 8k
10 : REx : Rx vocoder rate (8 is full rate, 1 is 1/8th rate)
11 : xx : Walsh code used in traffic channel
12
5
3
64 Sxxxx
TEx
T-xx Dxxx -xx
CHxxxxPxxx
REx xx x
T-xx Dxxx -xx
CHxxx
Pxxx
SIx x
7
8
91011
3

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3-1
3. Installation
3-1 Installing a Battery Pack
1. To attach the battery pack after charging, align it with the phone about 1cm (1/2 inch away from its place so
that the two arrows on the phone are seen, the battery charge contacts pointing downward.
2. Slide the battery pack upwards until it clicks firmly into position. The phone is now ready to be turned on.
3. To remove the battery pack, release it by pressing the button on the rear of the phone.
4. Slide the battery pack downward about 1cm (1/2inch and lift it away from the phone.
Press this button to
release the battery pack

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3-2
Installation
3-2 For Desk Top Use
1. Choose a proper location to install the charger for Desk Top use.
2. Plug the power cord of the charger into an appropriate wall socket. When the power is connected correctly,
the lamps turn on briefly.
3. To charge the battery pack, insert the battery pack into the rear slot of the charger. The lamp marked BAT on
the front panel of the charger lights up red.
4. If you do not wish to use the phone while charging the battery, insert the phone with the battery pack
attached into the front slot of the charger. The lamp marked PHONE on the front panel of the charger lights
up red.
Figure 3-1 Charging the Phone and Battery
SPECIFICATIONS USING “DTC 61AB”
Product Charging time (hours) Stand by time (hours) Talking time(min)
Front Rear Digital Digital
Slim Battery Pack (Li-ion: 500mAh) 2 2 40 80
Standard Battery Pack (Li-ion: 1000mAh) 2 2 75 150
Extended Battery Pack (Li-ion: 1600mAh) 2.5 6 120 240
Item Model Name Service Part#
Desk Top Rapid Charger DTC61AB GH44-00063A
Slim Battery Pack BTI61AB GH43-00023A
Standard Battery Pack BTS61AB GH43-00022A
Extended Battery Pack BTE61AB GH43-00021A
STANDARD
BATTERY PACK
SLIM
BATTERY PACK EXTENDED BATTERY PACK

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3-3
Installation
3-3 For Mobile Mount
3-3-1 Cradle
1. Choose a location where it is easy to reach and does not interfere with the driver’s safe operation of the car.
2. Separate the two halves of the clamshell by removing the two large slotted screws. See the figure 3-2.
3. Drill holes and mount the lower half of the clamshell by using the screws.
4. Place the cradle onto the remaining half of the clamshell and assemble them by using the screws.
5. Reassemble the two halves of the clamshell together. Adjust the mounting angle and tighten the two slotted
screws.
Figure 3-2 Cradle Installation
3-3-2 Hands-Free Box
1. Drill holes in a proper location for the hands-free box, attach the mounting bracket by using the screws. See
the figure 3-3.
2. Install the hands-free box into the bracket.
HANDS
FREE BOX
CELLULAR
PHONE
CRADLE
CLAM SHEEL
MOUNT UPPER
CLAM SHEEL
MOUNT LOWER
FIXED SCREW
CAR
32
32

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3-4
Installation
3-3-3 Hands-Free Microphone
1. It is recommended to install the microphone where it is 30-45 cm (12-18inch away from the driver. Choose
the location where is least susceptible to interference caused by external noise sources, ie, adjacent windows,
radio speakers, etc. Normal place is the sun visor.
2. Once the microphone has been correctly positioned, connect the microphone wire to the MIC jack on the
hands-free box.
Figure 3-3 Hands-Free Box 1 Installation
MOUNTING BRACKET