SAMSUNG Z370 Service Manual
GSM TELEPHONE
SGH-Z370
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.
2006. 11. Rev.1.0
Contents
1. Specification
1-1. GSM/CDMA General Specification ...........................................................................1-1
1-2. GSM TX power class ...............................................................................................1-2
2. Exploded View and Parts list
2-1. Cellular phone Exploded View ..................................................................................2-1
2-2. Cellular phone Parts list ............................................................................................2-2
2-3. Disassembly ...............................................................................................................2-4
2-4. Assembly ....................................................................................................................2-8
3. Chart of Troubleshooting
3-1. Baseband ............................................................................................................3-1
3-1-1. Power ON .....................................................................................................3-1
3-1-2. System Initial ................................................................................................3-6
3-1-3. SIM Part .......................................................................................................3-8
3-1-4. Charging Part .............................................................................................3-10
3-1-5. Microphone Part .........................................................................................3-13
3-1-6. Speaker Part ..............................................................................................3-16
3-1-7. Receiver Part .............................................................................................3-20
3-1-8. Camera Part ..............................................................................................3-22
1) 2Mega Camera .....................................................................................3-22
2) VGA Camera .........................................................................................3-23
3-1-9. LCD .............................................................................................................3-26
3-2. RF ......................................................................................................................3-13
3-2-1. EGSM Receiver .........................................................................................3-30
3-2-2. EGSM Transmitter .....................................................................................3-31
3-2-3. DCS Receiver ............................................................................................3-32
3-2-4. DCS Transmitter ........................................................................................3-33
3-2-5. PCS Receiver .............................................................................................3-34
3-2-6. PCS Transmitter .........................................................................................3-35
3-2-7. UMTS Receiver ..........................................................................................3-40
3-2-8. UMTS Transmitter ......................................................................................3-41
3-2-9. BLUETOOTH ..............................................................................................3-45
Contents
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. Block Diagrams
6. PCB Diagrams
7. MAIN Electrical Parts List
8. Reference data
8-1. Reference Abbreviate ..............................................................................................8-1
9. Safety Precautions
9-1. Repair Precaution ......................................................................................................9-1
9-2. ESD(Electrostaically Sensitive Devices) Precaution ................................................9-2
10. Product Function
1. Specification
1-1. GSM/WCDMA General Specification
EGSM 900
Phase 2
Freq. Band[MHz]
Uplink/Downlink
ARFCN range
Tx/Rx s p a c i n g 45 MHz 95 MHz 80 MHz 190 MHz
Mod. Bit rate/
Bit Period
Time Slot
Period/Frame
Period
Modulation 0.3 GMSK 0.3 GMSK 0.3 GMSK
880~915
925~960
0~124 &
975~1023
270.833 kbps
3.692 us
576.9 us
4.615 ms
DCS1800
Phase 1
1710~1785
1805~1880
512~885 512~810 10562~10838
270.833 kbps
3.692 us
576.9 us
4.615 ms
PCS1900 WCDMA
1850~1910
1930~1990
270.833 kbps
3.692 us
576.9 us
4.615 ms
1920~1980
2110~2170
3.84 Mcps/s
10 ms
UL:2BPSk
DL:QPSK
MS Power 33dBm~5dBm 30dBm~0dBm 30dBm~0dBm
Power C l a s s 5 pcl ~ 19 pcl 0 pcl ~ 15 pcl 0 pcl ~ 15 pcl CLASS3
Sensitivity -102 dBm -100 dBm -100 dBm -106.7 dBm
TDMA Mux 8 8 8 -
Cell Radius 35 Km 2 Km - -
MAX:24(+1,-3) dBm
MIN:<-50 dBm
1-1
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Specification
1-2. GSM TX power class
TX Power
control level
EGSM900
533±2dBm
631±2dBm
729±2dBm
827±2dBm
925±2dBm
10 23±2 dBm
11 21±2 dBm
TX Power
DCS1800
control level
030±3dBm
128±3dBm
226±3dBm
324±3dBm
422±3dBm
520±3dBm
618±3dBm
TX Power
control level
PCS1900
030±3dBm
128±3dBm
226±3dBm
324±3dBm
422±3dBm
520±3dBm
618±3dBm
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
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
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
1-2
15 0±5 dBm
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2. Exploded View and Parts List
2-1. Cellular phone Exploded View
QKP01
QME01
QMI03
QMI05
QFR01
QVO01
QLC01
QLB01
QMW01
QME06
QMP01
QVK01
QSD01
QCK01
QRF03
QMW01
QCR06
QCA02
QAN02
QRE01
QCW01
QRF01
QCR06
QSC02
QSC01
QBA01
QBA00
2-3
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Exploded View and Parts List
2-2. Cellular phone Parts list
Design LOC Description SEC CODE
QAN02 INTENNA-SGHZ370 GH42-00932A
QBA00 ASSY COVER-BATTERY GH98-02793C
QBA01 INNER BATTERY PACK-900MAH GH43-02398A
QCA01 UNIT-SGHZ370 CAMERA GH59-03551A
QCA02 UNIT-CAMERAKEY GH59-03381A
QCK01 ASSY KEY-CAM GH98-02272C
QCR06 SCREW-MACHINE 6001-001155
QCR06 SCREW-MACHINE 6001-001155
QCR06 SCREW-MACHINE 6001-001155
QCW01 PMO-COVER CAMERA WINDOW GH72-32220C
QFR01 ASSY CASE-FRONT GH98-01388C
QKP01 ASSY KEYPAD-(CCM/TSS) GH98-03117C
QLB01 ASSY BRACKET-LCD GH98-01391A
QLC01 LCD-MODULE SGHZ370 GH07-00953C
QME06 UNIT-SPK_MOT FPCB GH59-03520A
QMI03 RMO-RUBBER MIC HOLDER GH73-08098A
QMI05 ASSY CASE-MIC GH98-01833C
QMP01 PBA MAIN-SGHZ370S GH92-02996A
QMW01 AS-LCD WINDOW GH81-05667C
QRE01 ASSY CASE-REAR GH98-01389C
QRF01 PMO-COVER RF GH72-33246C
QRF03 PMO-COVER EARJACK GH72-32212C
QSC01 PMO-COVER SCREW R GH72-35365B
QSC02 PMO-COVER SCREW L GH72-35366B
QSD01 PMO-COVER SD CARD GH72-32560C
QVK01 UNIT-VOLUMEKEY GH59-03382A
QVO01 PMO-VOLUME KEY GH72-32219C
2-2
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Exploded View and Parts List
Description SEC CODE
CBF INTERFACE-DATA LINK CABLE GH39-00444B
ADAPTOR-SGHE690,SIL,UK,A_TYPE GH44-01362B
MPR-VINYL BOHO LCD GH74-28570A
MANUAL USERS-SEA ENGLISH GH68-12837A
MANUAL USERS-SEA CHINESE GH68-12936A
S/W CD-SGHZ370 PC STUDIO 3.0 GH46-00329A
BAG PE 6902-000634
LABEL(P)-IMEI GH68-01335D
LABEL(R)-MAIN(EU) GH68-12458A
BOX(P)-UNIT MAIN(XEU) GH69-04470E
CUSHION-CASE-UK GH69-04472A
UNIT-EARPHONE,SGHZ370,SIL,A-TY GH59-03679B
MPR-VINYL BOHO MAIN WINDOW GH74-26444A
AS-LCD TAPE GH81-05668A
LABEL(P)-WATER SOAK GH68-02026A
RMO-RUBBER BATT CONT GH73-07777A
MPR-VINYL BOHO CAM GH74-23666A
MPR-TAPE BOHO J-TAG GH74-25773A
MPR-GASK TAPE GH74-27265A
RMO-RUBBER LDI GH73-08704A
MPR-SPONGE LDI GH74-28627A
MPR-VINYL BOHO CAM GH74-23666A
MPR-VINYL BOHO CAM WINDOW GH74-26443A
LABEL(P)-WATER SOAK GH68-02026A
MPR-VINYL BOHO KEYPAD GH74-22928A
UNIT-EL KEY PBA,SKY/BLU GH59-03376C
AS-IC-MCP UMTS GH81-06105A
2-3
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Exploded View and Parts List
2-3. Disassembly
1
1) Remove screw/RF cap of rear
2) Unscrew 4 points of Rear
※
caution
1) Disjoint the locker while pressing a crack of
Rear camera part with disjointing tool.
2
-Use the disjointing tool
certainly.
-Be careful a break at the
time of disjointing
because
rear is soft material.
1) Disjoint the locker while pressing a crack of
Rear camera part with disjointing tool.
※
caution
1) Be careful not to be scratched or made scar
on the SET.
2) Be careful not to be damaged on the Rear at
the time of disjointing.
1) Disjoint the locker while pressing a crack of
Rear SIM connector part with disjointing tool.
※
caution
1) Be careful not to be scratched or made scar
on the SET.
2) Be careful not to be damaged on the Rear at
the time of disjointing.
43
1) Disjoint the locker while pressing a crack of
Rear Volume key part with disjointing tool.
2) Disjoint the locker while pressing a crack of the
right lower part of Rear with disjointing tool.
3) Disassemble the rear.
※
caution
1) Be careful not to be scratched or made scar
on the SET.
2) Be careful not to be damaged on the Rear at
the time of disjointing.
2-4
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Exploded View and Parts List
5
1) Disassemble the camera key and the
volume key.
6
1) Disconnect the EL key FPCB connector.
※
caution
1)WhendisassemblingELkeyFPCB,becareful
not to be damaged on the FPCB.
1) Disassemble the main PBA and front cover.
※
caution
1) Be careful not to be damaged on the main
PBA and LCD part.
87
1) Disassemble the Intenna.
※
caution
1) Disassemble the intenna after removing the
solder in soldering part.
2-5
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Exploded View and Parts List
9
1) Disassemble the camera module.
※
caution
1) Be careful not to be damaged on the CAMERA.
10
1) Disassemble the SPK/MOT.
※
caution
1) Disassemble after removing the solder
in soldering part.
1) Disassemble the LCD module and Main PBA.
※
caution
1) Be careful not to be damaged on the LCD
module and Main PBA.
1211
1) Disassemble the Gasket and LCD.
※
caution
1) Be careful not to be damaged on the LCD
module.
2-6
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Exploded View and Parts List
13
1) Disassemble the Mic cover.
※
caution
1) When disassemble the mic cover, do it after
unscrew 2 points like the picture
14
1) Detach the Key pad.
※
caution
1) Be careful not to be damaged on the EL sheet.
1615
1)DetachtheELsheet.
※
caution
1) Be careful not to be damaged on the EL
connector FPCB.
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1) Disassemble the MIC.
※
caution
1) Be careful not to be damaged on the MIC
FPCB.
2-7
Exploded View and Parts List
2-4. Assembly
1
1) Insert the MIC of EL sheet in the hole
on the lower of Front cover.
※
caution
1) Be careful not to be damaged on the MIC
FPCB.
2
1)InserttheELSHEETF-PCBintheholeof
Front.
2) Fix the EL KEY PAD on Front cover.
※
caution
1)InsertFPCBintheholebeforefixingtheEL
KEYPAD.
2) Be careful not to be damaged on the FPCB.
1) Fix the MIC in position like the picture.
※
caution
1) Check the damage of F-PCB with an eye.
43
1) Assemble the mic cover and then screw
2points.
2) Attach the KEY PAD.
3) Press down the KEY PAD so as not to be
detached it.
※
caution
1) Check the connecting condition of KEY PAD.
2-8
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Exploded View and Parts List
5
1) Attach the LCD on the LCD Bracket by guide
lib of LCD.
2) Solder the SPK/MOT.
6
1) Assemble the LCD and the MAIN PBA.
※
caution
1) Connect the LCD F-PCB connector on the MAIN
PBA.
87
1) Assemble the CAMERA and connect it.
※
caution
1) When insert the CAMERA, be careful not to be
damaged on it.
2) When connect the CAMERA CON F-PCB, be
careful not to be damaged on it.
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1) Assemble the INTENNA ASS'Y and then
solder it.
2-9
Exploded View and Parts List
9
1) Assemble the MAIN PBA and the FRONT.
※
caution
1) When insert the EL connector, be careful not to
be damaged on it.
2) Check the connecting condition of CONNECTOR
10
1) Insert the Camera key and the Volume key.
※
caution
1) After check the insertion direction, insert it.
1) Assemble the REAR and then screw 4 points.
1211
SCREW
COVER
RF COVER
1) Insert the SCREW COVER and the RF COVER.
※
caution
1) After check the insertion direction, insert the
SCREW COVER.
2-10
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3. Chart of Troubleshooting
3-1.Baseband
3-1-1. Power ON
‘Power ON’ does not work
Check the current consumtion
Check current consumtion
I 100 mA ?
YES
Check the battery voltage
V 3.3 V ?
YES
Check TP103.
Voltage Level is high ?
YES
Check U504.
V (pin #4) 3.3 V ?
YES
Check U503.
V (pin #32) 1.375 V ?
V (pin #36) 1.800 V ?
V (pin #50) 2.600 V ?
V (pin #56) 2.600 V ?
V (pin #84) 2.850 V ?
NO
Download again
Charge the Battery
Check D502
Check the path of U505 and U504
Check U503
YES
Check the pin #53 of U503.
Freq 19.2 MHz ?
Vpp 600 mV ?
YES
Check the LCD module
YES
END
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Check TCX800
3-1
Flow Chart of Troubleshooting and Circuit Diagrams
3-2
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Flow Chart of Troubleshooting and Circuit Diagrams
V_INVBAT
TA501
VF
C502
V_2.85TCXO
C505
C501
R500
R503
1
IN
2
GND
FLAG3
R502
U505
NC 5
GATE
NC
6
4
C506
U504
1
D
2
D
3
G
1
0
2
V
6
D
5
D
4
S
TA502
C503
C509
VBAT
BTC500
1
1
2
2
L500
3
3
4
NC
5
NC
6
NC
7
NC
PS_HOLD
BAT500
RB414_IV02N
ON_SW
R501
2
16
3
5
4
15
6
60
7
48
1
44
46
45
58
55
53
70
72
80
13
17
19
11
18
20
24
57
66
68
9
30
26
34
38
40
43
47
49
51
59
USB_VCC
VCHG
USB_VBUS
ISNS_P
ISNS_M
CHG_CTL_N
USB_CTL_N
VBAT
VCOIN
BAT_FET_N
VBACKUP
ADC_BYP
XTAL_IN
XTAL_OUT
SLEEP_CLK
TCXO_IN
TCXO_EN
TCXO_OUT
AMUX_IN1
AMUX_IN2
AMUX_OUT
REF_OUT
USB_OE_N
USB_DAT
USB_SE0
USB_ID
USB_D_P
USB_D_M
KPDPWR_N
PS_HOLD
CBL1PWR_N
CBL0PWR_N
PON_RESET_N
RUIM_M_IO
RUIM_IO
RUIM_M_CLK
RUIM_CLK
RUIM_M_RST
RUIM_RST
SBDT
SBCK
SBST
MSM_INT_N
V_1.8E
U503
VSW_5V
VREG_5V
VSW_PA
VREG_PA
VSW_MSMC
VREG_MSMC
VSW_MSME
VREG_MSME
VREG_USB
VREG_MMC
VREG_RUIM
VREG_MSMP
VREG_MSMA
VREG_WLAN
VREG_RFRX2
VREG_RFRX1
VREG_RFTX
VREG_SYNT
VREG_TCXO
REF_ISET
REF_BYP
REF_GND
FLSH_DRV_N
GP1_DRV_N
LCD_DRV_N
KPD_DRV_N
VIB_DRV_N
SPKR_IN_P
SPKR_IN_M
SPKR_OUT_P
SPKR_OUT_M
SPKR_BYP
VDD_SPKR
VDD_PA
VDD_MSMC
VDD_MSME
VDD_RUIM
VDD_MSM
VDD_ANA
VDD_WLAN
VDD_RF
VDD_MAIN
D
N
C
C
N
N
G
7
6
5
8
8
8
C512
C511
14
12
27
28
31
32
37
36
10
C513
39
42
50
56
64
67
69
73
81
84
61
6382
62
8
21
22
23
25
76
78
75
79
74
77
29
33
35
41
52
54
65
71
83
C534
C535
C536
L501
L502
R509
C528
V_IN
C529
C531
C530
C533
V_1.375C
C521
V_2.85RX1
C541
0
3
5
R
C518
C519
V_2.85RX
5
3
5
R
C537
V_MIC
1
3
5
R
C515
V_2.85TX
V_2.85OSC
7
6
3
3
5
5
R
R
C538
C539
V_2.6P
V_2.85USIM V_BT
2
3
3
3
5
5
R
R
C522
C516
C523
C517
V_2.85TCXO
8
9
3
3
5
5
R
R
C540
V_2.6A
4
3
5
R
C525
C500
R504
V_IN
R507
C514
POS
1
C524
21
2
NEG
Q501
3
1
2
1
Q502
N
O
D502
_
G
R511
I
J
C527
OSC501
3
2
RESET_IN
SLEEP_XTAL_IN
C526
TCXO
TCXO_EN
TCXO_OUT
AMUX_OUT
PMIC3_REF
USB_OE_N
USB_VPO
USB_VMO
R510
C532
VF
D+
D-
USIM_M_DATA
USIM_DATA
USIM_M_CLK
USIM_CLK
USIM_M_RESET
USIM_RESET
PM_SBDT
PM_SBCK
PM_SBST
PM_INT_N
C520
R508
3-3
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Flow Chart of Troubleshooting and Circuit Diagrams
R803
TRK_LO_ADJ
V_2.85TCXO
C822
C818
C823
1
VCON
TCX800
4
2
GND
OUTVCC
3
TCXO
3-4
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Flow Chart of Troubleshooting and Circuit Diagrams
3-5
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Flow Chart of Troubleshooting and Circuit Diagrams
3-1-2. System Initial
Initial Failure
Check the pin #9 of U503
Voltage level is high ?
YES
Check the Sleep X-tal
signal’s at C527
YES
Check the clock signal’s
at R508
YES
LCD display OK ?
YES
Sound operation OK ?
YES
END
NO
NO
NO
NO
NO
Check U503
Check OSC501
Check the clock generation part
relate to U503 and TCX800
Check the LCD part
Check the AUDIO part
3-6
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Flow Chart of Troubleshooting and Circuit Diagrams
3-7
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Flow Chart of Troubleshooting and Circuit Diagrams
3-1-3. SIM Part
"Please insert SIM card "
Check the SIM501’s
Connection to SIM card
YES
Check the voltage at SIM501
pin #1 = 2.8V
YES
There is any signal
pin#2,#3,#4 of SIM501
YES
Check the SIM Card
NO
Resolder or change SIM501
NO
Check SIM501
NO
Check SIM501 & UCP100
END
3-8
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Flow Chart of Troubleshooting and Circuit Diagrams
USIM_RESET
USIM_CLK
USIM_DATA
V500
V501
V_2.85USIM
R518
C542
V502
C543
SIM501
11
22
33 4
7
7
88
99
6
5
12 12
10 10
G
G
1314GG1516
6
5
4
1111
3-9
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Flow Chart of Troubleshooting and Circuit Diagrams
3-1-4. Charging Part
Abnormal charging operation
Abnormal charging operation
NO
Check the pin #13,14
Check the pin #13,14
of IFC300 3.3V
of IFC300 3.3V
YES
YES
Check the pin #3
Check the pin #3
of BTC500 3.3V
of BTC500 3.3V
NO
NO
NO
Check the TC
Check the TC
Check the path of
Check the path of
IFC300 and BTC500
IFC300 and BTC500
YES
YES
See the indicator of charger is red ?
See the indicator of charger is red ?
YES
YES
END
END
NO
NO
Again, check the
Again, check the
IFC300
IFC300
3-10
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Flow Chart of Troubleshooting and Circuit Diagrams
V_MIC
R300
MIC2P
EAR_R
EAR_L
EAR_SW
JACK_IN
BOOT_SW
TXD_1
RXD_1
JIG_ON_IF
USB_VCC
TA_VEXT
C304
L300
C310
C311
R309
R311
V_2.6P
R338
R318
R316
C335
R317
D+
D-
C332
TA301
C319
R313
TA302
1
C320
R314
C321
456
7
0
3
U
3
2
V302
6
5
4
C303
D
VBUS
C322
D
GND
DD
U306
TA303
C309
1
2
R303
C306
R306
R308
V303
RXD_2
TXD_2
R324
R326
3
C307
V301
V300
VBAT
R315
R319
R320
R321
R322
R323
5
C333
0
3
V
C328
TA300
IFC300
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
13
13
14
14
15
15
16
16
17
17
18
18
19
19
20
20
21
NC
22
NC
23
NC
24
NC
D+2
D-2
JIG_ON_IF2
3-11
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Flow Chart of Troubleshooting and Circuit Diagrams
3-12
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This Document can not be used without Samsung's authorization
3-1-5. Microphone Part
Microphone does not work
Microphone does not work
Is the assembled status of
Is the assembled status of
Microphone OK?
Microphone OK?
YES
YES
Check the DC bias voltage on MIC path
Check the DC bias voltage on MIC path
C305 = 2.3V?
C305 = 2.3V?
Flow Chart of Troubleshooting and Circuit Diagrams
NO
NO
Reassemble Microphone
Reassemble Microphone
NO
NO
Check the MIC Bias Circuit Path
Check the MIC Bias Circuit Path
YES
YES
MIC Filter circuit
MIC Filter circuit
around UCP100 is OK?
around UCP100 is OK?
YES
YES
END
END
NO
NO
Resolder MIC Filter Circuit
Resolder MIC Filter Circuit
or Check UCP100
or Check UCP100
3-13
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