Samsung SGH-C266 User manual

GSM TELEPHONE
SGH-C266
GSM TELEPHONE CONTENTS
1. Specification
2. Exploded View and Parts list
3. Chart of Troubleshooting
4. Array course control
5. Block Diagrams
6. PCB Diagrams
7. MAIN Electrical Parts List
8. Reference data
9. Safety Precautions
10. Product Function

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.
Samsung Electronics Co.,Ltd.
2007. 2. Rev.1.0
ⓒ
Country Web Site
North America service.samsungportal.com
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CIS cis.samsungportal.com
Europe europe.samsungportal.com
China china.samsungportal.com
Asia asia.samsungportal.com
Mideast & Africa mea.samsungportal.com
GSPN (Global Service Partner Network)

CONTENTS
1. Safety Precautions
1-1. Repair Precaution......................................................................................................1-1
1-2. ESD(Electrostatically Sensitive Devices) Precaution...............................................1-2
2. Specification
2-1. GSM General Specification.......................................................................................2-1
2-2. GSM TX power Level...............................................................................................2-2
3. Product Function
4. Array course control
4-1. Software Adjustments................................................................................................4-1
4-2. Software Downloading...............................................................................................4-2
5. Exploded View/Disassembly & Assembly Instructions
5-1. Cellular phone Exploded View..................................................................................5-1
5-2. Cellular phone Parts list............................................................................................5-2
5-3. Disassembly & Assembly Instructions......................................................................5-4
6. MAIN Electrical Parts List
7. Block Diagrams
8. PCB Diagrams

CONTENTS
9. Flow Chart of Troubleshooting
9-1. Baseband
9-1-1. Power ON...............................................................................................................9-1
9-1-2. Initial........................................................................................................................9-4
9-1-3. SIM Part..................................................................................................................9-6
9-1-4. Microphone Part......................................................................................................9-7
9-1-5. Speaker Part...........................................................................................................9-9
9-1-6. LCD Backlight.......................................................................................................9-11
9-2. RF
9-2-1. GSM Rx................................................................................................................9-12
9-2-2. DCS Rx.................................................................................................................9-15
9-2-3. PCS Rx.................................................................................................................9-17
9-2-4. GSM Tx.................................................................................................................9-19
9-2-5. DCS Tx.................................................................................................................9-21
9-2-6. PCS Tx.................................................................................................................9-23
10. Reference data

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1. Safety Precautions
1-1
This Document can not be used without Samsung's authorization
1-1. Repair Precaution
―Repair in Shield Box, during detailed tuning. Take specially care of tuning or test, because
specipicty of cellular phone is sensitive for surrounding interference(RF noise).
―Be careful to use a kind of magnetic object or tool, because performance of parts is damaged by
the influence of manetic force.
―Surely use a standard screwdriver when you disassemble this product, otherwise screw will be
worn away.
―Use a thicken twisted wire when you measure level. A thicken twisted wire has low resistance,
therefore error of measurement is few.
―Repair after separate Test Pack and Set because for short danger (for example an overcurrent
and furious flames of parts etc) when you repair board in condition of connecting Test Pack and
tuning on.
―Take specially care of soldering, because Land of PCB is small and weak in heat.
―Surely tune on/off while using AC power plug, because a repair of battery charger is dangerous
when tuning ON/OFF PBA and Connector after disassembing charger.
―Don't use as you pleases after change other material than replacement registered on SEC System.
Otherwise engineer in charge isn't charged with problem that you don't keep this rules.

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Safety Precautions
1-2
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1-2. ESD(Electrostatically Sensitive Devices) Precaution
Several semiconductor may be damaged easilly by static electricity. Such parts are called by
ESD(Electrostatically Sensitive Devices), for example IC,BGA chip etc. Read Precaution below.
You can prevent from ESD damage by static electricity.
―Remove static electricity remained your body before you touch semiconductor or parts with
semiconductor. There are ways that you touch an earthed place or wear static electricity prevention
string on wrist.
―Use earthed soldering steel when you connect or disconnect ESD.
―Use soldering removing tool to break static electricity. , otherwise ESD will be damaged by static
electricity.
―Don't unpack until you set up ESD on product. Because most of ESD are packed by box and
aluminum plate to have conductive power,they are prevented from static electricity.
―You must maintain electric contact between ESD and place due to be set up until ESD is
connected completely to the proper place or a circuit board.

2. Specification
2-1
2-1. GSM General Specification
GSM 850
Phase 2 DCS1800 Phase 1 PCS1900
Freq. Band[MHz]
Uplink/Downlink 824.2~848.8 869.2~893.8 1710~1785 1805~1880 1850~1910 1930~1990
ARFCN range 128~251 512~885 512~810
Tx/Rx spacing 45 MHz 95 MHz 80 MHz
Mod. Bit rate/
Bit Period 270.833 kbps 3.692 us 270.833 kbps 3.692 us 270.833 kbps 3.692 us
Time Slot Period/Frame Period 576.9 us
4.615 ms 576.9 us 4.615 ms 576.9 us 4.615 ms
Modulation 0.3 GMSK 0.3 GMSK 0.3 GMSK
MS Power 33 dBm~5 dBm 30 dBm~0 dBm 30 dBm~0 dBm
Power Class 5 pcl ~ 19 pcl 0 pcl ~ 15 pcl 0 pcl ~ 15 pcl
Sensitivity -102 dBm -100 dBm -100 dBm
TDMA Mux 8 8 8
Cell Radius 35 Km 2 Km -

Speclflcation
2-2
2-2. GSM Tx Power Class
TX Power
control level GSM850
5 33±2 dBm
6 31±2 dBm
7 29±2 dBm
8 27±2 dBm
9 25±2 dBm
10 23±2 dBm
11 21±2 dBm
12 19±2 dBm
13 17±2 dBm
14 15±2 dBm
15 13±2 dBm
16 11±3 dBm
17 9±3 dBm
18 7±3 dBm
19 5±3 dBm
TX Power
control level DCS1800
0 30±3 dBm
1 28±3 dBm
2 26±3 dBm
3 24±3 dBm
4 22±3 dBm
5 20±3 dBm
6 18±3 dBm
7 16±3 dBm
8 14±3 dBm
9 12±4 dBm
10 10±4 dBm
11 8±4 dBm
12 6±4 dBm
13 4±4 dBm
14 2±5 dBm
15 0±5 dBm
TX Power
control level PCS1900
030±3dBm
128±3dBm
226±3dBm
324±3dBm
422±3dBm
520±3dBm
618±3dBm
716±3dBm
814±3dBm
912±4dBm
10 10±4 dBm
11 8±4 dBm
12 6±4 dBm
13 4±4 dBm
14 2±5 dBm
15 0±5 dBm

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3. Product Function
3-1
This Document can not be used without Samsung's authorization
Main Function
-Web browser
Access the wireless web to get current information and up-to-the-minute a wide
variety of media content.
-Java
Enjoy Java™-based embedded games and download new games.
-Multimedia Message Service(MMS)
Send and receive MMS messages with a combination of text, image, video, and
audio.
-E-mail
Send and receive-emails with image, video,and audio attachments.

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Product Function
3-2
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4. Array course control
4-1
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Test Jig (GH80-00865A)
4-1. Software Adjustments
Test Cable (GH39-00127A)
RF Test Cable (GH39-00397A)

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Array course control
4-2
This Document can not be used without Samsung's authorization
4-2. Software Downloading
4-2-1. Downloading Binary Files
• Three binary files for downloading C266.
– C266XXYY.s3 : Main source code binary.
4-2-2. Pre-requsite for Downloading
• Downloader Program(OptiFlash.exe)
• C266 Mobile Phone
• Data Cable
• Binary files

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Array course control
4-3
This Document can not be used without Samsung's authorization
4-2-3. S/W Downloader Program
1. Load the binary download program by executing the “OptiFlash.exe”
2. Select the “Options” -> “Settings” -> “Generic” -> “Specify hardware platform”.
Choose hardware platform for the downloader file setting.
Set the everything else as the default values which are shown below

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Array course control
4-4
This Document can not be used without Samsung's authorization
3. Select the COM port when the download cable is connected
Up to twelve ports are supported. Additionally you can select the
maximum transfer speed OptiFlash will use to communicate with
the phone. However, OptiFlash will use a slower speed if either the
PC’s or the phone’s serial hardware is incapable of handling the
selected speed

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Array course control
4-5
This Document can not be used without Samsung's authorization
4. Select the“Flash&Verify” -> “Browse”
Set the directory path and choose the latest s/w binary, for example “
C266XXYY.s3”, for the downloader binary setting.
Make sure that not to change the reserved memory
regions.
In case of C140 the reserved memory regions are :
-0x00008000 – 0x0001bfff

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Array course control
4-6
This Document can not be used without Samsung's authorization
5. Click “OK” button then press “Flash”.
(Before pressing ‘Flash’ button, push the button ‘*’and ‘END’ at the same time.Then
press ‘Flash’.)
Downloader will upload the binary file as below for the downloading.
6. When downloading is finished successfully, there is a “All is well” message.
7. After finishing downloading, Certain memory resets should be done to guarantee the
normal performance.
8. Confirm the downloaded version name and etc. :
*#1111#
Full Reset :
*2767*3855#

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5. Exploded View/Disassembly&Assembly Instructions
5-2
This Document can not be used without Samsung's authorization
5-1. Cellular phone Exploded View
QFR01
QRF03
QKP01
QMP01
QFU01
QLC01
QHI01
QFL01
QSP01
QMO01
QMW02
QCR12
QME01
QSH01
QCR12
QAN02
QRE01
QBA01
QCR06
QBA00
QCR12
QSC05
QME03
QMI01
QMI03
QAN05

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Exploded View/Disassembly&Assembly Instructions
5-2
This Document can not be used without Samsung's authorization
Design LOC Description SEC CODE
QAN02 INTENNA-SGHC266 GH42-01118A
QAN05 ASSY MEC-INTENNA CONTACT GH75-08168A
QBA00 PMO-CASE BATTERY GH72-36766A
QBA01 INNER BATTERY PACK-750MAH BLK GH43-02489A
QCR06 SCREW-MACHINE 6001-001155
QCR12 SCREW-MACHINE 6001-001530
QCR12 SCREW-MACHINE 6001-001530
QCR12 SCREW-MACHINE 6001-001530
QFL01 ASSY CASE-LOWER GH98-03404A
QFR01 ASSY CASE-FRONT GH98-03403A
QFU01 ASSY CASE-UPPER GH98-03405B
QHI01 ASSY MEC-HINGE GH75-08452A
QKP01 ASSY KEYPAD-(XEN/WS) GH98-03772B
QLC01 LCD-MODULE SGH-C260 GH07-01138A
QME01 UNIT-SGHC260 METAL DOME(MAIN) GH59-04084A
QME03 UNIT-SGHC260 CON TO CON GH59-04070A
QMI01 MICROPHONE-ASSY-6.25MM GH30-00177F
QMI03 RMO-MIC HOLDER GH73-05342A
QMO01 MOTOR DC-SGHC260 GH31-00308A
QMP01 A/S ASSY-PBA MAIN GH82-02224A
QMW02 PMO-COVER MAIN WINDOW GH72-36767A
QRE01 ASSY CASE-REAR GH98-03406A
QRF03 PMO-CASE EAR GH72-36761A
QSC05 RMO-COVER FOLDER SCREW GH73-09088A
QSH01 ASSY CASE-SHIELD CAN GH98-03407A
QSP01 SPEAKER 3001-002094
5-2. Cellular phone Parts list

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Exploded View/Disassembly&Assembly Instructions
5-3
This Document can not be used without Samsung's authorization
Description SEC CODE
LABEL(R)-WATER SOAK GH68-09361A
MPR-TAPE DOPARO LED GH74-30219A
RMO-COVER DUMMY HOLE GH73-08828A
MPR-VINYL BOHO LCD WIN GH74-20912A
MPR-VINYL BOHO WINDOW JIG GH74-30221A
MPR-TAPE MAIN WINDOW GH74-29604A
MPR-SPONGE GH74-31189A
MPR-INSU TAPE GH74-30658A
MPR-SPONGE GH74-30223A
MANUAL USERS-LTN ENGLISH GH68-13795A
MANUAL USERS-LTN SPANISH GH68-13796A
BAG PE 6902-000634
LABEL(P)-MIAMI GH68-12219A
LABEL(R)-MAIN(LTN) GH68-13763B
BOX-UNIT(LTN_MOVISTAR) GH69-05011D
ADAPTOR-SGHC266, MEXC ,BLK GH44-01632A

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Exploded View/Disassembly&Assembly Instructions
5-4
This Document can not be used without Samsung's authorization
5-3. Disassembly and Assembly Instructions
5-3-1. Disassembly
12
1) Lift up the lockers in the center of set.
※caution
1) Be careful not to make scratch and molding
damage!
2) Remove the lockers in the center by all means.
34
1) Lift up the lockers in the bottom of set.
※caution
1) Be careful not to make scratch and molding
damage!
1) Twist the REAR off the set carefully.
※caution
1) Be careful not to make scratch and molding
damage!
1) Unscrew the REAR.(4 points)
※caution
1) Be careful not to make scratch and molding d
amage!