Samsung SGH-Z620 User manual

GSM TELEPHONE
SGH-Z620
GSM TELEPHONE CONTENTS
1. Safety Precautions
2. Specification
3. Product Function
4. Array course control
5. Exploded View and Parts list
6. MAIN Electrical Parts List
7. Block Diagrams
8. PCB Diagrams
9. Flow Chart of Troubleshooting
10. Reference data

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.
2006. 09. Rev.1.0
ⓒ

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. Downloading Binary Files .............................................................4-2
4-2. Pre-requsite for Downloading .......................................................4-2
4-3. S/W Downloader Program ............................................................4-3
5. Exploded View and Parts list
5-1. Cellular phone Exploded View ......................................................5-1
5-2. Cellular phone Parts list ..............................................................5-2
5-3. Disassembly ...............................................................................5-4
5-4. Assembly ...................................................................................5-6
6. MAIN Electrical Parts List
7. Block Diagrams
8. PCB Diagrams

Contents
9. Flow Chart of Troubleshooting
9-1. Baseband ................................................................................9-1
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_1(MP3, SPEAKER PHONE) ................................9-8
9-1-6. Speaker Part_2(RECEIVER) ................................................9-10
9-1-7. Charging Part ...................................................................9-11
9-2. RF .........................................................................................9-13
9-2-1. EGSM RX .........................................................................9-13
9-2-2. DCS RX ...........................................................................9-15
9-2-3. PCS RX ............................................................................9-16
9-2-4. EGSM TX .........................................................................9-17
9-2-5. DCS TX ...........................................................................9-18
9-2-6. PCS TX ............................................................................9-19
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.

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2. Specification
2-1
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2-1. GSM/WCDMA General Specification
EGSM 900
Phase 2
DCS1800
Phase 1 PCS1900 WCDMA
Freq.
Band[MHz]
Uplink/Downlink
880~915
925~960
1710~1785
1805~1880
1850~1910
1930~1990
1920~1980
2110~2170
ARFCN range 0~124 &
975~1023 512~885 512~810 10562~10838
Tx/Rx spacing 45 MHz 95 MHz 80 MHz 190 MHz
Mod. Bit rate/
Bit Period
270.833 kbps
3.692 us
270.833 kbps
3.692 us
270.833 kbps
3.692 us 3.84 Mcps/s
Time Slot
Period/Frame
Period
576.9 us
4.615 ms
576.9 us
4.615 ms
576.9 us
4.615 ms 10 ms
Modulation 0.3 GMSK 0.3 GMSK 0.3 GMSK UL:2BPSk
DL:QPSK
MS Power 33dBm~5dBm30dBm~0dBm 30dBm~0dBm MAX:24(+1,-3) dBm
MIN:<-50 dBm
Power Class 5 pcl ~ 19 pcl 0 pcl ~ 15 pcl 0 pcl ~ 15 pcl CLASS3
Sensitivit y -102 dBm -100 dBm -100 dBm -106.7 dBm
TDMA Mux 8 8 8 -
Cell Radius 35 Km 2 Km - -

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Specification
2-2
This Document can not be used without Samsung's authorization
2-2. GSM TX power class
TX Power
control level EGSM900
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± 3dBm
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
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

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3. Product Function
3-1
This Document can not be used without Samsung's authorization
Main Function
-Camera and camcorder
-Music player
-Bluetooth
-Web browser
-File viewer
-Java
-Multimedia Message Service(MMS)
-E-mail

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4. Array course control
4-1
This Document can not be used without Samsung's authorization
Test Jig (GH80-03308A)
Test Cable (GH39-00478A)
RF Test Cable (GH39-00397A)

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Array course control
4-2
This Document can not be used without Samsung's authorization
4.1 Downloading Binaries.
Start the Downloader application.
You can get the downloader program from binary zip file. Unzip the file and move to the \tools\downloa
der directory. You will see below if run the [M6275]U-Medic v1.3_SVC.exe file.
Please follow the order. The detailed fact is explained below. (store the user data using PC-Studio3 if ne
cessary)
1. Load the Z620.mdc file.
2. Connect the Mobile Handset to the PC via USB port.
3. Download.
First, click the 'Load' button to select “Z620.mdc” file. The mdc file is located in the \tools\downloader dir
ectory. And then Connect the Mobile Handset to the PC via USB port. Press power button with red color
and button captioned 4 to put the mobile into download mode. To verify that the mobile is put into down
load mode, just check the front LCD screen of the mobile. (USB DOWNLOAD SAMSUNG UMTS)
Once the mobile is detected/sensed by the Downloader Application, the appropriate Mobile Entry will be
enabled in the application screen.Optionally Port Search button could be pressed to detect/sense the mob
ile.

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Array course control
4-3
This Document can not be used without Samsung's authorization
Press 'Download' Button to proceed. After successful completion of download, a message saying Downloa
d Completed will be flashed.
Please try to download again if you will see the "ERROR : Download Fail" popup. We need to download
twice when the Boot and Resource code is changed. This is for preventing a wrong operation.
Warning:-
Incorrect download of binary file may lead to incorrect operation of the mobile, or the mobile may not op
erate at all.

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5. Exploded View and Parts List
5-1
This Document can not be used without Samsung's authorization
5-1. Cellular phone Exploded View
QKP01
QFU01
QFR01
QMP01
QCR49
QVK01
QAN02
QRE01
QVO01
QCR06
QIF01
QBA01
QBA00
QLC01
QMW01
QMO01
QSP01
QHI01
QFL01
QCA01
QBR09
QSD01
QCR47
QSC16
QSC18
QSC05
QSC06
QRF01
QCR06
QSC13
QMI01
QMI03

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Exploded View and Parts List
5-2
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Design LOC Discription SEC CODE
QAN02 INTENNA-SGHZ620 GH42-00849A
QBA00 ASSY COVER-BATT GH98-02985A
QBA01 INNER BATTERY PACK-900MAH GH43-02398A
QBR09 NDC-HINGE BRACKET GH71-06431A
QCA01 UNIT-CAMERA GH59-03288A
QCR06 SCREW-MACHINE 6001-001155
QCR47 SCREW-MACHINE 6001-001695
QCR49 SCREW-MACHINE 6001-001823
QFR01 ASSY CASE-FRONT GH98-02959A
QFU01 ASSY CASE-F/UPPER GH98-02791A
QKP01 ASSY KEYPAD-(TIM/BLK) GH98-02790A
QMI01 MICROPHONE-ASSY-SGHD830 GH30-00278A
QMI03 RMO-RUBBER MIC HOLDER GH73-07110A
QMO01 MOTOR DC-SGHZ620 GH31-00265A
QMP01 PBA MAIN-SGHZ620 GH92-02732A
QRF01 PMO-RUBBER RF COVER GH72-30630A
QSC05 MPR-FOLDER SCREW SHEET A GH74-22971A
QSC06 MPR-FOLDER SCREW SHEET B GH74-22972A
QSC13 RMO-RUBBER REAR SCREW COVER GH73-07752A
QSC16 MPR-TAPE F/TOP SCREW A GH74-27733A
QSC18 MPR-TAPE F/TOP SCREW B GH74-27734A
QSP01 SPEAKER 3001-002015
QVK01 UNIT-VOLUME KEY GH59-03219A
QRE01 ASSY-CASE-REAR GH98-00901A
QIF01 PMO-COVER IF GH72-30626A
QSD01 PMO-COVER MICRO SD GH72-30628A
QVO01 PMO-VOLUME KEY GH72-30629A
QFL01 ASSY-CASE-F/LOWER GH98-00898A
QHI01 ASSY-HINGE GH98-00899A
QLC01 MEA-LCD MODULE KIT GH97-06596A
QMW01 AS-LCD WINDOW GH81-04515A
5-2. Cellular phone Parts list

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Exploded View and Parts List
5-3
This Document can not be used without Samsung's authorization
Discription SEC CODE
BAG PE 6902-000297
CBF INTERFACE-DATA LINK CABLE GH39-00444A
ADAPTOR-SGHD800 TA(EU) GH44-01060A
S/W CD-SGHZ620 PC STUDIO 3.0 GH46-00328A
UNIT-EARPHONE(BLK) GH59-02499A
LABEL(P)-WATER SOAK GH68-02026A
LABEL(P)-WATER SOAK GH68-02026A
LABEL(R)-MASTER TIM GH68-11408B
MANUAL USERS-TIM TALIAN GH68-11875A
LABEL(P)-BASE FRONT LABEL GH68-12049A
LABEL(R)-MAIN(TIM) GH68-12061A
BOX(P)-UNIT MAIN(TIM) GH69-04317A
CUSHION-CASE TA2 MA2 GH69-04584A
RMO-RUBBER YAMAHA GH73-07659A
MPR-BOHO VINYL LCD CONN GH74-15350A
MPR-VINYL BOHO F/UPPER B GH74-25093A
MPR-VINYL BOHO MAIN WIN A GH74-25095A
MPR-TAPE DUST PREVENTION GH74-25103A
MPR-TAPE KEY TAIL GH74-25104A
MPR-GASK TAPE GH74-25105A
MPR-TAPE GASKET IF GH74-25107A
MPR-TAPE ESD LCD MODULE GH74-25846A
MPR-INSU TAPE PBA VOLKEY GH74-26674A
MPR-INSU TAPE PBA SD GH74-27338A
MPR-INSU TAPE PBA IF GH74-27375A
MPR-TAPE GH74-27595A
MPR-TAPE GH74-27596A
MPR-TAPE KEYPAD PREVENTION GH74-27820A
MPR-VINYL BOHO STATIC GH74-28052B
MPR-TAPE KEYPAD R GH74-28054A
AS-LCD TAPE GH81-05256A
AS-IC-MCP UMTS GH81-05912A

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Exploded View and Parts List
5-4
This Document can not be used without Samsung's authorization
5-3. Disassembly
1
43
2
1) Detach the LCD,CAMERA conn.
2) Detach the Vol Key FPCB with tweezers
3) Remove the screw on PBA.
4) Remove the Keypad.
※caution
1) Be careful not to get a damage of FPCB
when Detaching LCD conn, CAM conn, and
VOLUME KEY FPCB.
1) Remove the dust prevention tape.
※caution
1) Pay attention to damage of the LCD,CAM
conn.
1) Remove 6Screws on Rear Case.
2) Open the IF COVER.
3) Open the MICRO SD COVER.
※caution
1) Be careful not to get a damage.
1) Lift the hook at the end of the lower case
with an instrument and disassemble the
Rear Cover like the sequence below.
※caution
1) Be careful not to get a damage of Rear
Case.
①
②
③
①
②
③
④

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Exploded View and Parts List
5-5
This Document can not be used without Samsung's authorization
5
87
6
1)DisassembletheUpperCaseofthefolder
with an instrument like below.
※caution
1) Be careful not to get a damage.
1) Seperate the MOT & SPK with tweezers.
2)RemovetheLCDfromtheLOWERcase
(Holding the direction of hinge bracket like
below)
※caution
1) When you remove the LCD. Be careful of
the crack and damage of the LCD & LCD
FPCB
1) Disassemble the Front Cover from front
case by Pushing out the hinge spring.
2) Please refer to the Picture below.
※caution
1) Be careful not to get a damage.
2) Pay attention to the damage of the
LCD,CAM conn.
1) Remove the SCREW CAP.
2) UNSCREW 4 Points.
※caution
1) When you use a screwdriver, Be careful of
the damage of component.
①
②
③

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Exploded View and Parts List
5-6
This Document can not be used without Samsung's authorization
910
1) Remove the Hinge Bracket with tweezers.
2) In order to detach the CAM, Remove the
Hinge like below
※caution
1) Be careful of the crack and damage of the
CAM FPCB 1) Please check the disassembled part.

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Exploded View and Parts List
5-7
This Document can not be used without Samsung's authorization
1
43
2
1) Combine the UPPER & Lower
Please refer to the sequence below.
※caution
1) Be careful not to get a damage of outward
1) SCREW the 4 POINTs.
※caution
1) When you use a screwdriver, Be careful of
the damage of component.
1) Insert CAM FPCB in the LOWER like
below.
2) Insert Hinge like below Please refer
to the Picture below.
※caution
1) Be careful CAM FPCB Crack.
1) Insert LCD FPCB keeping up the lower
direction of Hinge Bracket
2) Place the SPK & MOTOR.
3) Place the LCD.
※caution
1) When you insert the LCD FPCB, Pay
attention to damage of the FPCB
2) Be careful of SPK & MOTOR wire crack
①
②
③
5-4. Assembly

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Exploded View and Parts List
5-8
This Document can not be used without Samsung's authorization
5
87
6
1) Combine the Folder and Front case like the
picturebelow.(Keepingupthelower
direction of hinge bracket and Folder
position.)
※caution
1) Be careful not to get a damage.
2) Be careful of the crack and damage of LCD,
LCD Conn.
3) Absolutely Keep up the picture's direction
of Folder
1)KeepinguptheFOLDER'sdirection,
Combine the Folder with a instrument.
※caution
1) Be careful not to get a damage.
2) Absolutely Keep up the picture's direction
of Folder
1) Combine the KEY FPCB Conn.
※caution
1) Be careful not to get a damage of KEY
FPCB
1) Screw down
2) Connect CAMERA,LCD Conn.and VOLUME
KEY FPCB
※caution
1) Be careful not to get a damage of
CAMERA,LCD FPCB and VOLUME KEY FPCB.