Download Samsung SGH-X640 service manual - Provinspc

SAMSUNG Anycall
SGH-X640
SAMSUNG Anycall
CONTENTS
1.
Specification
2.
Circuit Description
3.
Exploded Views and Parts List
4.
Electrical Parts List
5.
Block Diagrams
6.
PCB Diagrams
7.
Flow Chart of Troubleshooting
ⓒ Samsung Electronics Co.,Ltd. March. 2005
This Service Manual is a property of Samsung Electronics Co.,Ltd.
Any unauthorized use of Manual can be punished under applicable
Printed in Korea.
International and/or domestic law.
Code No.: GH68-06819A
BASIC.
1. Specification
1. GSM General Specification
GS M9 0 0
Ph a se 1
E GS M 9 0 0
Ph a se 2
DC S 1 8 0 0
P h as e 1
P C1 9 0 0
P h as e 1
F r eq . B a n d [M Hz ]
Up l in k / Do w n li n k
8 9 0 ~9 1 5
9 3 5 ~9 6 0
8 8 0 ~9 1 5
9 2 5 ~9 6 0
1 7 1 0 ~1 7 8 5
1 8 0 5 ~1 8 8 0
1 8 5 0 ~1 9 1 0
1 9 3 0 ~1 9 9 0
A RF C N r a n g e
1 ~1 2 4
0~124 &
9 7 5 ~1 0 2 3
5 1 2 ~8 8 5
5 1 2 ~8 1 0
T x /R x s p ac in g
4 5 MHz
4 5 MHz
9 5 M Hz
8 0 MH z
Mo d . B i t r at e/
Bi t Pe r i o d
270.833kbps
3.692us
2 7 0 .8 3 3 k b p s
3 .6 9 2 u s
270.833kbps
3.692us
2 7 0 .8 3 3 k b p s
3 .6 9 2 u s
Ti me Sl o t
P er io d / F r am e P er i o d
576.9us
4 .6 1 5 m s
5 7 6 .9 u s
4 .6 1 5 m s
576.9us
4 .6 1 5 m s
5 7 6 .9 u s
4 .6 1 5 m s
Mo d u l a ti o n
0 .3 G MS K
0 .3 G MS K
0 .3 GM SK
0 .3 GM SK
M S P o we r
3 3 d Bm ~1 3 d B m
3 3 d Bm ~5 d B m
3 0 d B m ~0 d B m
3 0 d B m ~0 d B m
Po w er C l as s
5 p cl ~ 1 5 p c l
5pcl ~ 19pcl
0pcl ~ 15pcl
0pcl ~ 15pcl
Se n si t iv i t y
-102dBm
- 1 0 2 d Bm
-100dBm
-100dBm
TDM A M u x
8
8
8
8
C el l Ra d iu s
3 5 Km
3 5 Km
2 Km
2 Km
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Specification
2. GSM TX power class
TX Power
control level
GSM900
TX Power
DCS1800
control level
TX Power
control level
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
33±2 dBm
31±2 dBm
29±2 dBm
27±2 dBm
25±2 dBm
23±2 dBm
21±2 dBm
19±2 dBm
17±2 dBm
15±2 dBm
13±2 dBm
11±3 dBm
9±3dBm
7±3 dBm
5±3 dBm
0
1
2
3
4
5
6
7
8
9
10
PCS1900
30±3 dBm
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±4dBm
12
6±4 dBm
13
4±4 dBm
14
2±5 dBm
15
0±5 dBm
28±3 dBm
26±3 dBm
24±3 dBm
22±3 dBm
20±3 dBm
18±3 dBm
16±3 dBm
14±3 dBm
12±4 dBm
10±4 dBm
11
8±4dBm
12
6±4 dBm
13
4±4 dBm
14
2±5 dBm
15
0±5 dBm
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2. Circuit Description
1. SGH-X640 RF Circuit Description
1) RX PART
1. ASM(U103) → Switching Tx, Rx path for GSM900, DCS1800, PCS1900 by logic controlling.
2. ASM Control Logic (U103)
→ Truth Table
VC1
VC2
VC3
GSM Tx Mode
H
L
L
DCS Tx Mode
L
H
L
PCS Tx Mode
H
L
L
GSM Rx Mode
L
L
L
DCS Rx Mode
L
L
L
PCS Rx Mode
L
L
H
3. FILTER
To convert Electromagnetic Field Wave to Acoustic Wave and then pass the specific frequency band.
- GSM FILTER (F100) → For filtering the frequency band between 925 and 960 MHz
- DCS FILTER (F102) → For filtering the frequency band between 1805 and 1880 MHz.
- PCS FILTER (F101) → For filtering the frequency band between 1930 and 1990 MHz.
4. VC-TCXO (OSC100)
This module generates the 26MHz reference clock to drive the logic and RF. After division by two a reference clock of
13MHz is supplied to the other parts of the system through the pin CLKOUT. After additional process, the reference
clock applies to the U100 Rx IQ demodulator and Tx IQ modulator. And then, the oscillator is controlled by serial data
to select channel and use fast lock mode for GPRS high class operation.
5. Transceiver (U100)
The receiver front-end which amplifies the GSM, DCS aerial signal, converts the chosen channel down to a low IF signal
of 100 kHz. The first stages are symmetrical low noise amplifiers (LNAs). The LNAs are followed by an IQ down mixer.
It consists of two mixers in parallel but driven by quadrature out of phase LO signals. The In phase (I) and Quadrature
phase (Q) IF signals are low pass filtered to provide protection from high frequency offset interferes. The low IF I and Q
signals are then fed into the channel filter. The front-end low IF I and Q outputs enter the integrated bandpass channel
filter with provision for five 8 dB gain steps in front of the filter.
2) TX PART
I and Q baseband signals are applied to the IQ modulator that shifts the modulation spectrum up to the transmit IF. It is
designed for low harmonic distortion, low carrier leakage and high image rejection to keep the phase error as small as
possible.
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Circuit Description
The modulator is loaded at its IF output by an integrated low pass filter that suppress unwanted spurs prior to get into
the phase detector. The clock drive is generated by division of the RFLO signal provided for the transmit offset mixer.
Baseband IQ signal fed into offset PLL, this function is included inside of U100 chip. OSC101 chip generates modulator
signal which power level is about 6.5dBm and fed into Power Amplifier(U102). The PA output power and power ramping
are well controlled by Auto Power Control circuit. We use offset PLL below table.
Modulation Spectrum
200kHz offset
30 kHz bandwidth
GSM
-35dBc
DCS
-35dBc
400kHz offset
30 kHz bandwidth
GSM
-66dBc
DCS
-65dBc
600kHz ~ 1.8MHz offset
30 kHz bandwidth
GSM
-75dBc
DCS
-68dBc
2. Baseband Circuit description of SGH-X640
1. PCF50601
1.1. Power Management
Ten low-dropout regulators designed specifically for GSM applications power the terminal and help ensure optimal system
performance and long battery life. A programmable boost converter provides support for 1.8V, 3.0V, and 5.0V SIMs,
while a self-resetting, electronically fused switch supplies power to external accessories. Ancillary support functions, such
as RTC module and High Voltage Charge pump, Clock generator, aid in reducing both board area and system complexity.
I2C BUS serial interface provides access to control and configuration registers. This interface gives a microprocessor full
control of the PCF50601 and enables system designers to maximize both standby and talk times.
Supervisory functions. including a reset generator, an input voltage monitor, and a temperature sensor, support reliable
system design. These functions work together to ensure proper system behavior during start-up or in the event of a fault
condition(low microprocessor voltage, insufficient battery energy, or excessive die temperature).
1.2. Backlight Brightness Modulator
The Backlight Brightness Modulator (BBM) contains a programmable Pulse-width modulator (PWM) and FET
to modulate the intensity of a series of LED’s or to control a DC/DC converter that drives LCD backlight.
But, this phone (SGH-X640) is use UFB LCD. UFB LCD controls backlight brightness by contrast setting.
So "BL_VDD" voltage is always high value when phone is in active mode. When phone is in dimming mode "BL_VDD"
goes to about 10% duty PWM.
1.3. Clock Generator
The Clock Generator (CG) generates all clocks for internal and external usage. The 32768 Hz crystal
oscillator provides an accurate low clock frequency for the PCF50601 and other circuitry.
2. LCD Connector
LCD is consisted of main LCD(color 65K UFB LCD).
Chip select signals LCD_MAIN_CS can enable LCD. BACKLIGHT signal enables white LED of main LCD.
"RESET_2V8" signal initiates the reset process of the LCD.
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Circuit Description
16-bit data lines(LD(0)~LD(15)) transfers data and commands to LCD through bypass capacitor. Data and commands use
"RS" signal. If this signal is high, inputs to LCD are commands. If it is low, inputs to LCD are data.
The signal which informs the state of LCD is whether input or output, is required. But in this system, there is no input
state from LCD. So only "L_WR" signal is used to indicate write data or command to LCD. Power signals for LCD are
"VBAT and "VDD2".
"M_SCL", "M_SCA", "PCLK", "FVALID", "LVALID" and "STANDBY" signals are all related to camera working.
"SVC_LED" is signal for service led when the signal is low led is on and vice versa. "SPK_P" and "SPK_N" are used
for audio speaker containing voice or melody. And "VDD_VIB" from PCF50601 enables the motor.
3. Key
This is consisted of key interface pins among OM6359, KBIO(0:7). These signals compose the matrix. Result of matrix
informs the key status to key interface in the OM6359. Power on/off key is separated from the matrix. So power on/off
signal is connected with PCF50601 to enable PCF50601. Fifteen key LEDs
are use the "VBAT" as supply voltage.
"VDD_KEY" signal enables LEDs. "FLIP" informs the status of folder (open or closed) to the OM6359. This uses the
hall effect IC, SH248CSP.
A magnet under main LCD enables SH248CSP.
4. EMI ESD Filter
This system uses the EMI ESD filter, EMIF09 to protect noise from IF CONNECTOR part.
5. IF connetor
It is 18-pin connector. They are designed to use VBAT, V_EXT_CHARGE, TXD0, RXD0, RTS0, CTS0, JIG_REC,
CHARGER_OK, RXD1, TXD1, AUX_MIC, AUX_SPK and GND. They connected to power supply IC, microprocessor
and signal processor IC.
6. Battery Charge Management
A complete constant-current/constant-voltage linear charger is used for single cell lithium-ion batteries.
If TA connected to phone, "V_EXT_CHARGE" enable charger IC and supply current to battery.
When fault condition caused, "CHG_ON" signal level change low to high and charger IC stop charging
process.
7. Audio
EARP_P and EARP_N from OM6359 are connected to the main speaker. AUXSP is connected to the Hands free kit.
MIC_P and MIC_N are connected to the main MIC. And AUX_MIC_P and AUX_MIC_N are connected to the Hands
free kit.
YMU762C is a LSI for portable telephone that is capable of playing high quality music by utilizing FM synthesizer and
ADPCM decoder that are included in this device.
As a synthesis, YMU762C is equipped 32 voices with different tones. Since the device is capable of simultaneously
generating up to synchronous with the play of the FM synthesizer, various sampled voices can be used as sound effects.
Since the play data of YMU762C are interpreted at anytime through FIFO, the length of the data(playing period) is not
limited, so the device can flexibly support application such as incoming call melody music distribution service. The
hardware sequencer built in this device allows playing of the complex music without giving excessive load to the CPU of
the portable telephones.
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Circuit Description
Moreover, the registers of the FM synthesizer can be operated directly for real time sound generation, allowing, for
example, utilization of various sound effects when using the game software installed in the portable telephone.
YMU762C includes a speaker amplifier with high ripple removal rate whose maximum output is 550mW (SPVDD=3.6V).
The device is also equipped with conventional function including a vibrator and a circuit for controlling LEDs
synchronous with music.
For the headphone, it is provided with a stereophonic output terminal.
For the purpose of enabling YMU762C to demonstrate its full capabilities, Yamaha purpose to use "SMAF:Synthetic music
Mobile Application Format" as a data distribution format that is compatible with multimedia. Since the SMAF takes a
structure that sets importance on the synchronization between sound and images, various contents can be written into it
including incoming call melody with words that can be used for training karaoke, and commercial channel that combines
texts, images and sounds, and others. The hardware sequencer of YMU762C directly interprets and plays blocks relevant
to synthesis (playing music and reproducing ADPCM with FM synthesizer) that are included in data distributed in SMAF.
8. Memory
Signals in the OM6359 enable two memories. They use only one volt supply voltage, VDD3 in the PCF50601. This
system uses Samsung's memory, KBB06A500M-T402. It is consisted of 128M bits flash NOR memory and 128M bits
flash NAND memory and 64M bits SCRAM. It has 16 bit data line, HD[0~15] which is connected to OM6359 and
MV317S. It has 26 bit address lines, HA[1~26]. CS_NAND and NCSRAM signals are chip select. Writing process,
HWR_N is low and it enables writing process to flash memory and SRAM. During reading process, HRD_N is low and
it enables reading process to flash memory and SRAM. Each chip select signals in the OM6359 select memory among 2
flash memory and SCRAM. Reading or writing procedure is processed after HWR_N or HRD_N is enabled. Memories
use reset, which is VDD3 delay from PCF50601. HA[25] signal enables lower byte of SRAM and HA[26] signal enables
higher byte of SRAM.
9. OM6359
OM6359 is consisted of ARM core and DSP core. It has 8x1Kword on-chip program/data RAM, 55 Kwords
on-chip program ROM in the DSP. It has 4K*32bits ROM and 2K*32bits RAM in the ARM core. DSP is consisted
of KBS, JTAG, EMI and UART. ARM core is consisted of EMI, PIC(Programmable Interrupt Controller),
reset/power/clock unit, DMA controller, TIC(Test Interface Controller), peripheral bridge, PPI, SSI(Synchronous Serial
Interface), ACC(Asynchronous communications controllers), timer, ADC, RTC(Real-Time Clock) and keyboard interface.
KBIO(0:7), address lines of DSP core and HD[0~15]. HA[1~26], address lines of ARM core and HD[0~15], data lines of
ARM core are connected to memory, YMU762C. MV317S(Camera DSP Chip) controls the communication between ARM
core and DSP core.
CS_NAND, NCSRAM, NCSFLASH in the ARM core are connected to each memory. HWR_N and HRD_N control the
process of memory. External IRQ(Interrupt ReQuest) signals from each units, such as, PMU need the compatible process.
KBIO[0~7] receive the status from key and RXD0/TXD0 are used for the communication using
data link
cable(DEBUG_DTR/RTS/TXD/RXD/CTS/DSR).
It has JTAG control pins(TDI/TDO/TCK) for ARM core and DSP core. It receives 13MHz clock in CKI pin from
external TCXO. ADC(Analog to Digital Convertor) part receives the status of temperature, battery type and battery voltage.
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Circuit Description
10. TOH2600DGI4KRA(26MHz)
This system uses the 26MHz TCXO, TOH2600DGI4KRA, SEM. AFC control signal from OM6359 controls frequency
from 26MHz x-tal. The clock output frequency of UAA3536 is 13MHz. This clock is connected to OM6359, YMU762C.
11. Camera DSP(MV317S)
Tiger is an Integrated circuit for mobile phone camera.
This structure will allow effectiveness for large
data management and significantly reduces main processor will get burden.
In hence, Tiger will allow the user to be able to display to LCD direct without burdening the main
processor. It also allows to have various kinds of display size on the LCD and snapshot for Jpeg. Digital
effect will also be executed on real time base resulting Tiger as being a video co-processor in the
mobile platform. Also,an i80 type processor’ s 16bit parallel interface of Tiger makes it available for the CPU to
interchange the data with Tiger. As the additional 8Mbit is usable except 2Mbit buffer embedded in Tiger, the diverse UI
data processing which is not a burden to the CPU is available.
JPEG encoder and decoder are baseline
ISO/IEC 10918-1 JPEG compliance (DCT-based). JPEG decoder supports YUV444, YUV422, YUV420 and
YUV411 format standard JPEG image.
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Circuit Description
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3. Exploded View and Parts list
1. Cellular phone Exploded View
QFU01
QPC01
QLC01
QSP01
QCK01
QMO01
QFR01
QCA01
QRF03
QVO01
QFL01
QMI03
QKP01
QCR17
QMP01
QSC08
QMI01
QME01
QMW02
QCR08
QAN02
QRE01
QRF01
QIF01
QCR21
QBA01
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QSC05
Exploded view and Part list
2. Cellular phone Parts list
Location
Description
NO.
SEC CODE
QFU01
FOLDER UPPER
GH75-06199A
QLC01
LCD
GH07-00653A
QPC01
FPCB
GH41-00774A
QSP01
SPEAKER
3001-001731
QMO01
MOTOR DC
3101-001401
QCA01
UNIT CAMERA
GH59-01472A
QFL01
FOLDER LOWER
GH75-06200A
QSC05
SCREW SHEET R
GH74-08872A
QSC08
SCREW SHEET L
GH74-08873A
QCR17
SCREW MACHINE
6001-001639
QMW02
WINDOW MAIN
GH72-19197A
QFR01
FRONT COVER
GH75-06331A
QRF03 EAR COVER
GH72-19199A
QMI03 MIC RUBBER
GH73-04064A
QCK01
CAMERA KEY
GH75-06567A
QVO01
VOLKEY ASSY
GH75-06566A
QKP01
KEYPAD
GH75-06201A
QMP01
MAIN PBA
GH92-02030A
QME01
UNIT METAL DOME
GH59-01921A
QMI01
MICROPHONE ASSY
GH30-00130A
QCR08
SCREW MACHINE
6001-001456
QAN02
INTENNA
GH42-00523A
QRE01
REAR COVER
GH75-06202A
QRF01
RF SHEET
GH74-13063A
QIF01
IF COVER
GH72-19208A
QCR21
SCREW MACHINE
6001-001507
QBA01
BATTERY
GH43-01658A
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Remark
Exploded view and Part list
3. Test Jig (GH80-01909A)
3-1. RF Test Cable
3-2. Test Cable
(GH39-00283A)
3-3. Serial Cable
(GH39-00217A)
3-4. Power Supply Cable
3-5. DATA CABLE
(GH39-00219A)
3-6. TA
(GH44-00482A)
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Exploded view and Part list
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4. Electrical Parts List
Design LOC
SEC CODE
Design LOC
SEC CODE
BAT400
4302-001119
C136
2203-000585
C100
2203-005482
C137
2203-000585
C101
2203-005057
C138
2203-000585
C102
2203-005057
C139
2203-000585
C103
2203-005482
C141
2404-001239
C104
2203-000995
C142
2203-000254
C105
2203-005138
C144
2203-000812
C106
2203-000359
C145
2203-000233
C107
2203-000836
C146
2203-000233
C108
2203-005482
C147
2203-001385
C109
2203-000812
C148
2203-000311
C110
2203-001101
C149
2203-000585
C111
2203-000854
C150
2203-002443
C112
2203-000812
C151
2203-005053
C113
2203-005057
C152
2203-000438
C114
2203-005482
C153
2203-001153
C115
2203-000812
C155
2203-000438
C116
2203-000854
C156
2203-000438
C117
2203-000812
C200
2203-005061
C118
2203-005496
C202
2203-005482
C119
2203-000438
C203
2203-005061
C120
2203-000438
C204
2203-000679
C121
2203-000278
C205
2203-000995
C122
2203-005496
C206
2203-000254
C123
2203-000233
C207
2203-005482
C124
2203-000278
C208
2203-000254
C125
2203-006053
C209
2203-005482
C126
2203-000254
C210
2203-005482
C127
2203-005482
C211
2203-005482
C128
2203-005057
C212
2203-005482
C129
2203-005057
C300
2203-000233
C130
2203-005482
C301
2203-000679
C131
2203-000233
C302
2203-005061
C132
2203-001153
C303
2203-000438
C133
2203-000604
C304
2203-005061
C134
2203-000854
C305
2203-005496
C135
2203-000278
C306
2203-006208
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Electrical Parts List
Design LOC
SEC CODE
Design LOC
SEC CODE
C307
2203-005061
C428
2203-006053
C308
2203-005509
C429
2203-006053
C309
2203-002687
C430
2203-006053
C310
2203-005483
C431
2203-006053
C311
2203-006093
C502
2203-005061
C312
2203-006208
C505
2203-005061
C313
2203-005061
C506
2404-001268
C314
2203-000254
C507
2404-001268
C315
2203-005061
C508
2203-005061
C316
2203-001259
C600
2203-000330
C317
2203-000438
C602
2203-000995
C318
2203-001259
C603
2203-005061
C319
2203-006053
C604
2203-005061
C400
2203-005482
C605
2203-002443
C401
2203-005061
C606
2203-000854
C402
2203-006208
C608
2203-000995
C403
2203-005482
C609
2203-000278
C406
2203-000254
C610
2203-005061
C407
2203-000278
C611
2203-000386
C408
2203-006208
C612
2203-000330
C409
2404-001225
C613
2203-000278
C411
2203-000330
C614
2203-000679
C412
2203-005482
C615
2203-000679
C413
2203-000330
C617
2203-000854
C414
2203-001652
C619
2203-005482
C415
2203-006053
C620
2203-000438
C416
2203-006324
C621
2203-000438
C417
2203-000888
C622
2203-005482
C418
2203-006208
C625
2203-000812
C419
2203-006208
C626
2404-001352
C420
2203-006208
C627
2404-001352
C421
2404-001225
C628
2203-000278
C422
2203-005482
C702
2203-000254
C424
2404-001225
C703
2203-006257
C425
2203-001652
C704
2203-000278
C426
2203-006053
CN400
3709-001273
C427
2404-001225
CN500
3710-001994
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Electrical Parts List
Design LOC
SEC CODE
Design LOC
SEC CODE
CN501
3711-005783
LED706
0601-001602
CN502
3705-001355
LED707
0601-001790
D700
0406-001201
LED708
0601-001602
D701
0406-001201
LED710
0601-001790
EAR600
3722-002249
LED711
0601-001790
F100
2904-001469
LED712
0601-001602
F101
2904-001480
LED713
0601-001790
F102
2904-001470
LED714
0601-001602
F103
2901-001254
OSC100
2809-001294
F700
2901-001286
OSC101
2806-001329
F701
2901-001286
OSC300
2801-004285
F702
2901-001286
Q600
0504-001012
F703
2901-001286
Q700
0506-000107
F704
2901-001286
R100
2007-007148
F705
2901-001286
R101
2007-000141
HDC700
3711-005551
R102
2007-007528
L100
2703-002208
R103
2007-000566
L101
2703-002203
R104
2007-001298
L102
2703-002208
R105
2007-007142
L103
2703-001722
R106
2007-007311
L104
2703-002267
R107
2007-001305
L105
2703-002199
R108
2007-001305
L106
2703-001748
R109
2007-000566
L107
2703-001722
R110
2007-000148
L109
2703-002204
R111
2007-001305
L110
2703-001723
R112
2007-008117
L111
2703-001749
R113
2007-001305
L112
2703-001723
R114
2007-001308
L113
2703-001723
R115
2007-001305
L114
2703-001970
R116
2007-000142
L620
3301-001729
R117
2007-000142
LED700
0601-001602
R118
2007-000775
LED701
0601-001602
R119
2007-000142
LED702
0601-001602
R120
2007-000171
LED703
0601-001602
R121
2007-000142
LED704
0601-001602
R123
2007-000171
LED705
0601-001602
R124
2007-001288
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Electrical Parts List
Design LOC
SEC CODE
Design LOC
SEC CODE
R125
2007-001313
R317
2007-000140
R126
2007-001313
R318
2007-007100
R127
2007-000171
R319
2007-000139
R128
2007-007314
R400
2007-000148
R129
2007-000147
R401
2007-007100
R130
2007-000148
R402
2007-001325
R131
2007-000148
R403
2007-000171
R132
2007-000171
R450
2007-000171
R200
2007-000171
R500
2007-000162
R201
2007-000162
R501
2007-000162
R202
2007-007107
R507
2007-007573
R203
2007-007142
R508
2007-000162
R204
2007-007107
R509
2007-007334
R205
2007-007142
R511
2007-007317
R206
2007-000162
R512
2007-007588
R207
2007-000162
R600
2007-000162
R208
2007-007001
R601
2007-000140
R209
2007-000141
R603
2007-000148
R210
2007-000141
R605
2007-000242
R211
2007-000162
R606
2007-001308
R212
2007-000172
R607
2007-000148
R213
2007-000172
R608
2007-007334
R300
2007-007014
R610
2007-007334
R301
2007-001313
R611
2007-002796
R302
2007-007014
R612
2007-000171
R303
2007-001325
R613
2007-000171
R304
2007-000153
R614
2007-007981
R305
2007-000171
R615
2007-007489
R306
2007-001319
R700
2007-000143
R307
2007-007013
R701
2007-000143
R308
2007-007001
R703
2007-000174
R310
2007-000162
R704
2007-000174
R311
2007-000162
R705
2007-000174
R312
2007-000162
R706
2007-000174
R313
2007-000162
R707
2007-000174
R314
2007-000162
R708
2007-000174
R315
2007-000162
R709
2007-000174
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Electrical Parts List
Design LOC
SEC CODE
Design LOC
SEC CODE
R710
2007-000174
V700
1405-001128
R711
2007-000174
V702
1405-001128
R712
2007-000174
V704
1405-001128
R713
2007-000174
V705
1405-001128
R714
2007-000174
V706
1405-001128
R715
2007-000174
V707
1405-001128
R716
2007-000174
V708
1405-001128
R719
2007-008672
V709
1405-001128
SW300
3404-001152
V710
1405-001128
SW600
1009-001018
V711
1405-001128
SW700
3404-001152
X400
2801-004339
SW701
3404-001152
ZD501
0403-001427
TH200
1404-001221
ZD502
0403-001387
U100
1205-002327
ZD600
0406-001194
U102
1201-002174
ZD601
0406-001194
U103
2909-001246
ZD700
0406-001194
U200
1205-002607
ZD701
0406-001194
U201
0801-002882
U300
0801-002237
U301
1204-002161
U302
1109-001316
U303
GH13-00020A
U304
0801-002882
U306
0801-002882
U400
1205-002350
U500
2901-001246
U502
1203-003486
U603
1001-001253
U610
1202-001036
U701
1203-001917
U702
1203-003459
V600
1405-001082
V601
1405-001082
V602
1405-001082
V603
1405-001082
V604
1405-001082
V605
1405-001082
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Electrical Parts List
4-6
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5. Block Diagrams
1. RF Solution Block Diagram
SGH-X640 RF Block Diagram
HITACHI METAL ANT SWITCH
SHS-C090T (4.5X3.2)
Imax = 10 mA
Freq (MHz )
880 - 915
925 - 960
1710 -1785
1805 -1880
1930 -1990
Loss
1.2 dB
0.9 dB
1.2 dB
1.2 dB
1.2 dB
Pins IA,IB,QA and QB
V IQ : 1.25V typ . , 1.15V min , 1.35V max
V mod : 0.5V pp
FUJITSU EGSM RX SAW Filter
FAR F5EB-942M50-B28CH
IL=2.7dB max
Ripple=1.7 dB max
+ I OUT
- I OUT
FUJITSU DCS RX SAW Filter
FAR-F6EB-1G8425B2BW
IL= 2.3dB max
Ripple= 2.0dB max
QUAD
100
kHz+fmod
+ Q OUT
- Q OUT
FUJITSU PCS RX SAW Filter
FAR-F6EB-1G9600B2BW
IL= 2.8dB max
Ripple= 1.6dB max
FE_SW1
VREG
Vcc_RF_LO
DIV
FE_SW2
Vcc_SYN
Vcc_RF_VCO
PCS RX ON
~
GSM/DCS/PCS
Discrete
3 rd Order
Loop Filter
VREG
FracN
DIV
Vcc_REF(2.4V typ.)
f compRF =26MHz
CP
VTCXO
TCO-5871U
REFIN
PFD
FE_SW1
26MHz
FE_SW2
I+
DIV
QUAD
OFFSET Mixer input power
-16dBm max, -22dBm min
pi -PAD
I-
Vcc_Tx_BURST
VBAT
GSM IN
pi -PAD
VRAMP
~
~
Discrete
3 rd Order
Loop Filter
f TXIF
60/114MHz
CP
PFD
Philips Transceiver
UAA3536
TX ENABLE
DCS, PCS S/W
MURATA TX VCO
pi -PAD
DCS/PCS IN
RFMD PAM
RF5146 7x7
GSM: Pout = 35.0 dBm E ff = 58%
DCS: Pout = 33.0 dBm E ff = 52%
PCS: Pout = 32.0 dBm E ff = 55%
REF_13M
3W
BUS
CTL
REG
DATA
fmod
CLK
EN
Q-
GSM S/W
BAND SELECT
Q+
1:1/2
MQW510C869M
(5.5 X 4.8 X 1.5 mm)
GSM = 824 ~ 915 MHz
(Vt=0.5V ~ 3.0 V )
DCS,PCS =
1710 ~ 1910 MHz
(Vt=0.5V ~ 3.0 V )
Pout= 6.5
3dBm typ.,Ic <= 33mA
Harmonics <= -15dBc
5-1
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PWR
EN
RXON
TXON
SYNON
FESWON
Block Diagrams
2. Base Band Solution Block Diagram
Battery
Type
BB INTERFACE
Serial Data
Interface
RECEIVER
Battery
Temperature
MELODY IC
(40 Poly)
SPEAKER
Battery
Voltage
I/O
Interface
VCC_CP
A/D
Interface
VIBRATOR
OM6359
MIC
VCC_SYN
VCC_RX_TX
VCC_RF_VCO
RF INTERFACE
SYSTEM CLOCK
(13MHz)
VCC_TX_BURST
VDD1
AFC
VDD2
KEY
RAMP
VDD3
MEMORY
CAMERA
VDD_VIB
NAND(128Mb)
NOR(128Mb)
SRAM(64Mb)
MIC_BIAS
PMU
Li-Ion Battery
VDD_KEY
MV317
SPVDD
AVDD
LCD
Charging
Circuit
RTC_CLOCK
(32.768KHz)
SIM CARD
AVDD_TEMP
BL_VDD
BB Block Diagram of SGH-X640
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6. PCB Diagrams
1. Main PCB Top Diagram
6-1
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PCB Diagrams
2. Main PCB Bottom Diagram
6-2
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7. Flow Chart of Troubleshooting
1. Power On
' Power On ' does not work
Yes
Check the Battery Voltage
is more than 3.4V
No
Change the Battery
Yes
No
C414(V_ISUP) = 2.7V?
Check the PMU related to V_ISUP
Yes
Check the Clock at
R401=32KHZ
No
Resolder X400
Yes
No
C431 (VDD1) = "H"?
Check the VDD1 circuit
Yes
C430(VDD2) & C429(VDD3)
= 2.8V?
No
Check the VDD2,VDD3 circuit
Yes
Check for the clock at C126
= 13MHz
No
Check the clock generation circuit
(related to U100)
Yes
Check the initial operation
Yes
END
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7-2
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3V25
2V7
2V7
2V7
1V35
2V35
2V85
VCC_RX_TX
VCC_RF_VCO
VCC_RX_BURST
VDD1
VDD2
3V05
2V65
2V65
3V05
2V95
4V
VDD_VIB
AVDD
AVDD_TEMP
VDD_AMP
VDD_KEY
VCC_CP
3V
5V
2V85
VDD3
SIMVDD
TYP
SIGNAL
C428
C429
C430
C431
G3G2G1 H4 H2 H1 J1 F8 B4 A4
PUMP+
LINREG)
(CHARGE
HIGH VOLTAGE
SUPPLY
CHARGE
CONTROL
BATTERY
VOLTAGE
MONITOR
J8 J9
VCC
CLK
RST
IO
C2
C3
C1
D2
C425
C8
B9
C9
A10
B10
D8
C427
2
NC
1
NC
HVSVBAT
HVSGND
HVSSCP
HVSSCN
HVSOC
HVSVDD
CHRVBAT D3
CHRREG E2
CHRIV E1
K8
OSC32I
K9
OSC32O
CPRES D1
SIMIO B8
SIMCLK C6
K10A5 B5 A6 B6B3 A3
V_ISUP
J7 K7
AVDDS
2V7
2V7
VBAT
SEL12RB
DVDD1VBAT
DVDD1
F1 F3 E9
VBAT
32KHz XTAL
OSCILLATOR
HFAVDD
HFAVDD
HFAVBAT
HFAVBAT
VCC_SYN
2V1
ovdd
VSS21
VSS20
VSS19
VSS18
VSS17
VSS16
VSS15
VSS14
VSS13
VSS12
VSS11
VSS10
VSS9
VSS8
VSS7
VSS6
VSS5
VSS4
VSS3
VSS2
VSS1
BL_VDD
htmp
E4 F5 F4 G4J3 G5K5 F6 G6 G7 G8F7 E6 E7 D7 C7 D6 E5 D5 D4 C4
DVDD1
V_ISUP
H7
SWITCH
LINREG
CONTROL
SUPPLY &
BACKLIGHT
internal
supply
REAL-TIME
CLOCK
PLL
CLOCK
GENERATOR
DVDD2
MIC_BIAS
E8
F9
E10
J10
RF1SWS
RF1VDDS
RF2SWS
RF2VDDS
RFVBAT
RF1VDD
RF1SNS
RF2VDD
RF2SNS
G9
G10
F10
H10
H9
BLVBAT
BLVDD
BBMSW
BBMGND
ISUPA
ISUPD
INTERNAL
SUPPLY
MODULE
htmp
internal
clocks
DVDD3
TYP
VBAT
VBACK
B7
A7
C5
A8
H6
J4
K4
J5
TEMP HIGH
SENSOR
calibration
bias currents
VIBVDD
VIBVBAT
SIGNAL
VBAT
VBAT
MICBIAS
reference
voltage
DVDD4
VDD2
VDD3
VIB
VDD_VIB
C422
C412
J6
refgnd
INTERFACE
SIM
SIM
CHARGE
PUMP
B2 A2 B1 A1
AVDD
VDD1
C421
C414
V_ISUP
BAT400
R450
CONTROL
ON/OFF
C10
C400
HFA
Baseband power supply
C424
C408
ON-CHIP
REFERENCE
&
MIC BIAS
control
status
data
K3 H3 D9 A9 J2K1 K2
VBAT
SIM
VIB
RF power supply
PON_SYNTH
VCC_RFVCO
PON_TX
VCC_TX_BURST
C415
R402
BLVDD
C406
REFC
REFGND
H8
K6
12C
INTERFACE
SLPMOD
SCL
SDA
D10
REC3
REC1
REC2
CLK32
RSTO
ONKEY
AUXON
E3
F2
H5
TM
GENERATOR
INTERRUPT
VCC_RX_TX
C407
SCL
SDA
PCF50601ET1-N5
U400
PMU (IC)
INT
VCC_SYNTH
C409
C401
SIMVBAT
C416
MIC_BIAS
TP400
Baseband power supply
SIMSCN
SIMSCP
SIMGND
VBAT
BACKLIGHT
IT_PMU
JIG_REC
RECO1
JACK_IN
32K
RSTON
ONKEY_N
CHARGER_OK
REF_ON
R400
VDD1
VBAT
C426
C417
R401
TP401
TP402
C420
C402
SIM_VCC
SIM_RST
SIM_CLK
SIM_IO
C419
1
2
X400
C403
C405
VBAT
32K
AVDD_TEMP
G G G G
10 9 8 7
CN400
AVDD
VCC_CP
RF power supply
VDD_KEY SPVDD
R403
C418
C413
SIMIO
SIMCLK C411
C404
1
2
3
6
5
4
Flow Chart of Troubleshooting
Power On
*
AVDD
AVDD
AVDDVBAT
AVDDVBAT
DVDD4
DVDD4VBAT
DVDD4ON
DVDD3
DVDD3
DVDD3VBAT
SEL3RB
DVDD2
DVDD2
DVDD2VBAT
VPROG
*
Flow Chart of Troubleshooting
2. Initial
Initial Failure
Yes
No
R200 (RSTON) ="H"?
Check the circuit related to reset
Yes
No
Is U304 pin 4,6
(memory CE) OK?
Check the U304
Yes
Check the circuit around
LCD & U304 (Short or not solder)
Yes
END
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7-4
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KBIO(0:7)
M_SEL
FLASH_EN
JACK_EN
CHG_ON
IMAGE_INT
IMAGE_RESET
M_RST
FLIP
END_OF_CHARGE
CTS0
CS_NAND
NCSRAM
NCSFLASH
HWR_N
HRD_N
HA(20)
R206
R207
KBIO(7)
KBIO(6)
KBIO(5)
KBIO(4)
KBIO(3)
KBIO(2)
KBIO(1)
KBIO(0)
L14
L12
L13
L11
J11
K13
J10
K11
M12
K9
L8
M9
P7
L7
L9
N7
P6
N8
K8
KBIO7
KBIO6
KBIO5
KBIO4
KBIO3
KBIO2
KBIO1
KBIO0
GPIO0
GPIO1
GPIO2
GPIO3
GPIO4
GPIO5
GPIO6
GPIO7
GPIO8
GPIO9
GPIO10
G3
CS_N3
M5
CS_N2
G5
CS_N1
N4
CS_N0
VDDE3_G
VDDE3_F
VDDE3_B
VDDE3_A
IMAGE_CS
VDD3
F5
MELODY_CS
K6
M8
N13
U201
AVDD
U200
C200
R719
AVDD
VDD_VBOUT
VDD_VB
VDD_REF
VDD_D
VDD_BB
VSS_P
N5
VSS_O
P1
VSS_N
K1
VSS_M
G1
VSS_K
C3
VSS_I
E8
VSS_H
G13
VSS_G
N11
VSS_F
N14
VSS_E
N10
VSS_C
M7
VSS_B
J1
VSS_A
K7
AVSS
P10
VDDE2_E
VDDE2_C
VDDE1_D
VDDE1_C
VDDE1_B
VDDE1_A
J_SEL
B4
TRST_N
A1
TDO
D3
TCK
A3
TMS
A2
TDI
D2
D4
VDDC_D
VDDC_C
VDDC_B
VDDC_A
R211
VDD1
D5
A6
D6
B6
A7
C7
B7
C6
E7
K10
D7
H12
G12
E10
E9
D8
D9
A8
B9
B8
A9
G11
E11
F10
F11
D10
M13
SIMIO
M14
SIMCLK
M11
SIMERR
E6
PWM1
F4
PWM0
C2
SCK
B3
SDA
ADI
AFS
ACLK
ADO
BOEN
BDIO
BIEN
BIOCLK
MCLK
A13
MICP
B13
MICN
B14
AUXMICP
A14
AUXMICN
B10
EARP
A11
EARN
A10
AUXSP
B11
BUZ
QP
QN
IP
IN
AUXADC1
AUXADC2
AUXADC3
AUXADC4
H13
H14
J13
J14
F14
G14
E14
F13
E12
AUXDAC1
D13
AUXDAC2
D12
AUXDAC3
J12
RFE_N0
K12
RFE_N2
C14
VREF
RFSIG0
RFSIG1
RFSIG2
RFSIG3
RFSIG4
RFSIG5
RFSIG6
RFSIG7
RFSIG8
RFSIG9
RFSIG10
RXON
TXON
CCLK
CDO
CDI
CEN
N9
GPON2
L10
GPON1
G10
AUXST
DD
FSC
DCL
DU
C202
R208
R203
R212
R213
R205
DD
FSC
DCL
DU
BOEN
BDIO
BIEN
BIOCLK
D_REF_13M
MIC_P
MIC_N
AUX_MIC_P
AUX_MIC_N
VDD2
R210
QRX_TX_P
QRX_TX_N
IRX_TX_P
IRX_TX_N
MES_BATT
AFC
RAMP
R209
SIMIO
SIMCLK
IT_PMU
SCL
SDA
VDD1
TH200
R202
AVDD_TEMP
R204
RF_EN_SYNTH
RF_BBI_DATA
RF_BBI_CLK
PCS_RX
BAND_SEL
PON_SYNTH
PON_TX
PON_RX
GSM_TXVCO_EN
DCS_TXVCO_EN
PAM_TXEN
ANTSW_ON
REF_ON
RI_BLUE
VF
AVDD_TEMP
EARP_P
EARP_N
AUXSP
EARP_HF
TP4
Initial
43
Y1
_E
5
2
VCC GND
6
1
Y0
A
H11
VDD3
HA(1)
HA(2)
HA(3)
HA(4)
HA(5)
HA(6)
HA(7)
HA(8)
HA(9)
HA(10)
HA(11)
HA(12)
HA(13)
HA(14)
HA(15)
HA(16)
HA(17)
HA(18)
HA(19)
HA(20)
HA(21)
HA(22)
HA(23)
HA(24)
HA(25)
HA(26)
C8
N12
P9
HD0
HD1
HD2
HD3
HD4
HD5
HD6
HD7
HD8
HD9
HD10
HD11
HD12
HD13
HD14
HD15
HA1
HA2
HA3
HA4
HA5
HA6
HA7
HA8
HA9
HA10
HA11
HA12
HA13
HA14
HA15
HA16
HA17
HA18
HA19
HA20
HA21
HA22
HA23
HA24
HA25
HA26
HWR_N
HRD_N
C1
P8
H4
H3
H2
J3
E5
H1
B1
E4
F3
F2
F1
E1
D1
E3
E2
B2
M4
P3
L4
N3
K5
M3
P2
N2
M1
N1
L2
L1
M2
J2
J5
K3
J4
K4
K2
G4
P5
N6
L6
J7
J6
H6
L5
H5
G2
M6
P4
HD(0)
HD(1)
HD(2)
HD(3)
HD(4)
HD(5)
HD(6)
HD(7)
HD(8)
HD(9)
HD(10)
HD(11)
HD(12)
HD(13)
HD(14)
HD(15)
L3
C10
RESETN
M10
RSTO_N
H10
RST_N
K14
AUXON
P11
CKI
P13
CKI32I
P14
CKI32O
VDD3
P12
HA(1:26)
C201
R201
VDD2
C9
F12
HD(0:15)
R200
VDD1
C12
B12
D14
RSTON
D_REF_13M
32K
VDD1
VDD1
Flow Chart of Troubleshooting
VSS_VBOUT
C11
VSS_VB
A12
VSS_REF
C13
VSS_D
D11
VSS_BB
E13
J_SEL
TRST_N
TDO
TCK
TMS
TDI
TXDA4
RXD1
TXD1
RXD1
RXD0
C4
TXD0
C5
RXT0_N
A5
CTS0_N
B5
RXD0
TXD0
RTS0
CTS0
Flow Chart of Troubleshooting
3. Charging Part
Abnormal charging part
Yes
No
Check the C508
> 4.9V
Check the the circuit related to
V_EXT_CHARGE
Yes
No
U502 pin 5 = "H"?
Resolder or replace U502
Yes
No
U502 pin = "L"?
Check the circuit related to
CHG_ON signal
Yes
No
Check the C507
≒ 4.2V
Resolder or replace U502
Yes
END
7-5
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Flow Chart of Troubleshooting
Charging
VBAT
R507
MES_BATT
VDD2
C507
R509
U502
1 ITERM
R508
2 BAT
_EN 8
END_OF_CHARGE
V_EXT_CHARGE
CHG_ON
_ACPR 7
3 _CHRG
C505
CHARGER_OK
VCC 6
4 GND
PROG 5
GG GG
9101112
R511
R512
ZD501
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C508
C506
Flow Chart of Troubleshooting
4. Sim Part
Phone can't access SIM Card
Yes
No
CN400 pin 1,5 = "H"?
Check the sim charge pump
Yes
No
After Power ON,
Check SIMCLK Signal on CN400
pin3 in a few second
Check the 32k OSC
Yes
No
After SIM card insert,
CN400 pin 2 = "H(SIM_RST)"?
Replace PBA
Yes
Check the SIM Card
Yes
END
7-7
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Flow Chart of Troubleshooting
5. Microphone Part
Microphone does not work
Yes
No
Check the connection
from MIC
Resolder MIC
Yes
No
Check the circuit
from U200 to MIC
Resolder the R601, R605, R611, R612, R613,
C604 and C610
Yes
No
Check the MIC
Replace the MIC
Yes
END
7-8
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Flow Chart of Troubleshooting
Microphone
MIC_BIAS
Close to microphone
R611
C626
C627
C600
C601
C602
V600
R601
C604
0
MIC-JTAG
MIC_P
R612
C606
C608
MIC600
C607
C610
C609
R603
0
MIC_N
R613
C612
V601
C611
R605
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C613
Flow Chart of Troubleshooting
6. Speaker Part(Melody)
Speaker does not work
Yes
No
U300 pin 5 = 2.85V?
Resolder or replace U300
Yes
No
Check the Clock signal at
Pin 1 of U301 (13MHz)
Check the clock generation circuit
(related to OSC100 and U301)
Yes
No
U301 pin 17,18 ≒ 1.8V?
(When U301 operate)
Resolder U301
Yes
No
HDC700 pin 40,42
≒ 1.8V?
Check the circuit related to
"SPK_P/SPK_N" signal
Yes
No
Is Speaker working?
Change the Speaker
Yes
END
7-10
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Flow Chart of Troubleshooting
Speaker
HRD_N
VDD3
VDD2
HA(1)
MELODY_CS
VDD2
VDD2
HWR_N
HD(0)
U300
HD(1)
1
4
CLKI
33
D1
G
26
25
24
LED
D3
/IRQ
D4
/RST
D5
HD(4)
4
C302
VSS
VREF
MTR
10
VIB
18
SPOUT2
11
12
13
14
15
AMP_N
16
C301
17
SPOUT1
AMP_P
36
C304
HD(7)
19
VDD
G
C303
HD(6)
20
SPVSS
9
D7
SPVDD
8
PLLC
EQ3
R303
21
D6
EQ2
7
HD(5)
U301
NC
EQ1
6
22
HPOUT-L/MONO
5
HD(3)
23
G
M_RST
HD(2)
D2
3
2
27
D0
R301
OUT
29
/CS
IN
GND
/RD
3
35
R302
30
IOVDD
2
MEL_13M
G
32
28
5
/WR
VCC
31
NC
A0
1
HPOUT-R
R300
34
C300
C305
SPVDD
R305
MELODY IC
C306
C307
R306
R307
C309
C310
R308
EARP_HF
7-11
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Flow Chart of Troubleshooting
7. Key Data Input
Check Initial Operation
Yes
No
When one of the keys is
pushed,
is it displayed on LCD?
Check the Dome sheet & Key Pad
Yes
No
When one of the keys is
pushed,
KBIO signal is OK?
Replace the PBA
Yes
END
7-12
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Flow Chart of Troubleshooting
8. Receiver Part
Receiver does not work
Yes
No
Resolder or replace U603
U603 pin 9, 13 = 1.5V?
Yes
No
Resolder or replace U603
U603 pin 1, 5 = 1.5?
Yes
No
Resolder EAR600
EAR600 pin 4, 5 = short?
Yes
No
Resolder HDC700
HDC700 pin 40,42 = 1.5V?
Yes
No
Cange LCD module
SPK +,- PAD = 1.5V?
Yes
No
Check the soldering of the
speaker wire
Modify the speaker wire soldering
Yes
No
Replace the Receiver
Is Receiver working?
Yes
END
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Flow Chart of Troubleshooting
9. LCD Part
LCD does not work
Yes
No
Is LCD Contrast set on high
level in the Menu?
Set LCD Contrast on high level
Yes
No
Check the R304, C308
HDC700 pin 24 = 2.8V?
Yes
No
HDC700 pin 19(L_WR),
20(RS) is OK?
Check the U303
Yes
Replace the LCD Module
Yes
END
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Flow Chart of Troubleshooting
10. Key Back Light
Key Backlight does not work
Yes
No
Check the PMU related to "VDD_KEY"
U701 pin 5 = "H"?
Yes
No
Resolder or replace U701
U701 pin 2,3 = "H"?
Yes
END
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Flow Chart of Troubleshooting
11. Camera part
"Camera" function does not work
Yes
No
Check the Camera
connector on LCD module
Connect the camera module
Yes
No
HDC700 pin 48, 50
= 2.8V?
Check LCD and HDC700
Yes
No
OSC300 Pin 1 = 24MHz?
Check OSC300 and R318
Yes
No
HDC700 pin 24 = 2.8V?
Check the R304, C308
Yes
Is there another problem?
Yes
Replace the camera
module
END
7-16
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Flow Chart of Troubleshooting
12. GSM Receiver
RX ON
RF input : CH center freq
Amp : -50dBm
Yes
No
U103 Pin7
>= -65dBm
Resolder CN100, C144
Yes
No
U103 pin5
>= -65dBm
Check U103
pin4 = L, pin8 = L
No
Check ANT Switch
control circuit
Yes
Yes
Resolder U103
No
F100 pin1
>= -70dBm
Resolder F100, C104, L103
Yes
U100
pin32 >= -70dBm
pin33 >= -70dBm
No
Resolder L100, L101, L102
Yes
U100 pin6, 7, 8, 9
>= 1V
No
Check U100
pin10,22,28 >=2.7V
pin20 >=4.0V
Yes
No
Check & Resolder
RF PSU Part
Yes
Check &Resolder
U100, RF26MHz part,
R100, R101
R116, R117, R119
R121 >= 1V
Yes
Check U200
END
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Flow Chart of Troubleshooting
13. GSM Transmitter
TX ON (5Level)
Yes
Yes
U103 Pin7
>= 20dBm
Resolder CN100, C144
No
Yes
U103 pin11
>= 20dBm
Yes
Check U103
pin4 = H (2.68V),
pin2,8 = L
Change or Resolder U100
No
No
Yes
U102 pin6
>= 20dBm
Check ANT Switch
control circuit
Resolder L113,L114,C151
No
Yes
U102 pin48
>= 3dBm
Check U102
VBATT, pin42,43
Yes
Resolder or Change U102
or check PAM control signal
OK?
No
Check +VBATT
No
OSC101 pin1
>= 6dBm
Yes
Resolder R123
No
U100 pin6, 7, 8, 9
>= 500mV
Yes
Check U100
pin4 >= 4.0V
pin22,28 >=2.7V
OK?
No
No
Yes
Check & Resolder
RF PSU Part
Resolder U100
or check Txcpo(R114)
Check U200
END
7-18
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Flow Chart of Troubleshooting
14. DCS Receiver
RX ON
RF input : CH center freq
Amp : -50dBm
Yes
No
U103 Pin7
>= -65dBm
Resolder CN100, C144
Yes
No
U103 pin1
>= -65dBm
Check U103
pin4 = L, pin8 = L
No
Check ANT Switch
control circuit
Yes
Yes
Resoder U103
No
F102 pin1
>= -70dBm
Resolder F102, C116, L107
Yes
U100
pin38 >= -70dBm
pin39 >= -70dBm
No
Resolder C115, C117, L106
Yes
U100 pin6, 7, 8, 9
>= 1V
No
Check U100
pin10,22,28 >= 2.7V
pin20 >=4.0V
Yes
No
Yes
R116, R117, R119,
R121 >= 1V
Yes
Check U200
END
7-19
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Check & Resolder
RF PSU Part
Check &Resolder
U100, RF26MHz part,
R100, R101
Flow Chart of Troubleshooting
15. DCS Transmitter
TX ON (0Level)
Yes
Yes
U103 Pin7
>= 20dBm
Resolder CN100, C144
No
Yes
U103 pin9
>= 20dBm
Check U103
pin2,4 = L,
pin8 = H (2.68V)
Yes
Change or Resolder U100
No
No
Yes
U102 pin31
>= 20dBm
Check ANT Switch
control circuit
Resolder L111, C147
No
Yes
U102 pin37
>= 3dBm
Check U102
+VBATT,pin42,43
OK?
Yes
Resolder or Change U102
or check PAM control signal
Yes
Check +VBATT
No
OSC101 pin5
>= 6dBm
Yes
Resolder R124, R125, R126
No
U103 pin6, 7, 8, 9
>= 500mV
Yes
Check U100
pin4 >= 4.0V
pin22,28 >= 2.7V
No
Yes
No
Check U200
END
7-20
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Check & Resolder
RF PSU Part
Resolder U100
or check Txcpo(R114)
Flow Chart of Troubleshooting
Transmitter
PAM_EGSM_TX
R118
C104
C111
R111
L103
L105
1
1
1
IN
IN
IN
G
G
5
OUT
4
3
G OUT
OUT
3
4
4
3
F101
G OUT
F100
25
G
2
F102
OUT
C125
C109
C112
L100
L102
R108
120
C115
C117
L101
L104
L106
C108
RFVCC
GSMIA
GSMIB
RFGND1
PCSIA
PCSIB
RFGND2
DCSIA
DCSIB
29
28
TXCPVCC
C105
26
6
25
71
U100
27
5
GNDTUNE
8
24
SYNON
9
23
RXON
0
22
SYNVCC
C132
34
30
2
R106
1
FESWON
42 GND2
43 GND3
44 GND4
45
NC1
46
NC2
40
39
38
37
36
35
34
33
32
31
VCC_RX_TX
R107
VCC_CP
TXCPO
C128
R115
VB1
C133
TXON
IA
DCS_PCSTX
10
11
12
13
14
15
16
17
21
11
12
13
14
15
16
17
18
19
20
C107
RFCPVCC
EN
CLK
DATA
REFVCC
REFIN
REFGND
CLKFDBX
CAFCSUP
CLKOUT
GND1
41
C119
R110
PAM_DCS_TX
C110
R101
R100
C126
C147
C118
L111
VBATT
G
TXRFI
C106
R102
C120
OSC100
VCC
4
C102
3
DCSRX
EGSMRX
C138
C123
VCON
1
OUT
GND
2
R112
C136
L114
R103
R105
C137
C103
R109
C139
C122
R116
R119
R117
R121
CN502
C113
C101
C
C144
2
4
8
2
3
3
7
1 DCS_RX ANT VC1
5
VC2
GSM_RX
9
VC3
11 DCS/PCS_TXPCS_RX
GSM_TX
G GG G G
14131210 6
U103
1
C151
L113
A
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
PAM_EGSM_TX
G
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
RAMP
RFVCOVCC
C121
R104
VCC_TX_BURST
C127
R114
EXTRES
C124
10
EGSMTX
R124
R126
RFLOVCC
8
VC
C131
R125
C150
RFTUNE
G OUT
12
OSC101
14
FE_SW2
R128
FESW1
25
OUT1
OUT2
G
9 11 13
R123
0
R127
PAM_TXEN
R129
FESW2
R113
5
1
3 67
SW1 SW2 G G G G G
24
48
47
46
37
40
41
45
C149
FE_SW1
L107
C135
9 8 3 1
GSM850/900IN
GND1GSM
VCC1GSM
DCS/PCSIN
BANDSEL
VRAMP
TXENABLE
C148
FE_SW2
C116
C134
F103
C142
VB2
R120
2
42 43
U102
2
VBATT
VCC3DCS/PCS
VCCOUT
VCC2GSM
IB
QA
RFCPO
QB
IFVCC
C129
G
4
C155
VCC1DCS/PCS
VCC2DCS/PCS
VCC3GSM
39 35 21 20 19 18
C153
C100
C114
C130
C145
PCSRX
C143
L110
L112
R132
R130
VCC_RFVCO
PON_SYNTH
PON_RX
VCC_SYNTH
VCC_CP
RF_EN_SYNTH
RF_BBI_CLK
ANT101
L109
R131
RF_BBI_DATA
AFC
MEL_13M
D_REF_13M
VCC_SYNTH
QRX_TX_N
QRX_TX_P
IRX_TX_N
IRX_TX_P
PON_TX
C146
ANT102
FE_SW1
FE_SW2
PCS_RX
ANT
PCS_RX
DCS_RX
DCS/PCS_TX
EGSM_RX
EGSM_TX
0
0
0
0
1
VC1(VC_DCS)
0
0
1
0
0
VC2(VC_PCS)
1
0
0
0
0
VC3(VC_EGSM)
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EGSMRX
VBAT
13
C141
GSM850/900OUT
DCS/PCSOUT
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
C156
This Document can not be used without Samsung's authorization
PCSRX
DCSRX
ANTSW_ON
EGSMTX
DCS_PCSTX
GSM_TXVCO_EN
DCS_TXVCO_EN
6
31
53
22
23
24
25
26
27
28
29
33
36
38
44
PAM_DCS_TX
4
5
7
30
32
34
49
50
51
52
54
C152
7-21
VCCOUT
Flow Chart of Troubleshooting
7-22
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