Samsung SGH-i300 User manual

MITs TELEPHONE
SGH-i300
MITs TELEPHONE CONTENTS
1. Specification
2. Flow Chart of Troubleshooting
3. Exploded Views and Parts List
4. Electrical Parts List
5. PCB Diagrams
6. Block Diagrams

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1. SGH-i300 Specification
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1-1
1-1. PDA specification
Parts Name Description Note
CPU
PXA272
Core : Xscale
Core Frequencies : 416 MHz
Clock : 13 MHz, 32,768 KHz
FLASH : 64M Byte
Memory SRAM IDT70P248L, DUAL PORT STATIC Memory, 8K/4K * 16
Bit
RAM K4M56323PE, SDRAM, 4 Bank, 8M * 32 Bit
LCD Resolution : 320 x 240 QVGA 1.98" 65K TFT Color
Auido CODEC WM9713, Dual codec stereo audio
Melody YMU765, 64 poly
External Card T-FLASH Card
Camera 1/3.2" 1.3 Mega Pixels CMOS Image Sensor
JTAG IEEE 1149.1 Portocol support, Flash Programming
Control
Hard disk 3G Hard disk driver
UART RS-232C , USB 1.1
IrDA HSDL 3003
Battery Standard/Extend Capacitance : 1000/1700mA
Speaker Impedance : 8 Ω, Size : 13 x 15 * 3.4t
Receiver Impedance : 32 Ω,Size:6x11*3t
Motor RPM 10000, Size : Bartype 8 mm
KeyMatrix 5*7

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SGH-i300 Specification
1-2
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1-2. Phone Specification
Parts Name Description Note
CPU
Trident EF version
Core : DSP16000/ARM7IDMI
DSP Core : RAM(20k * 16), ROM(144K * 16)
ARM CORE : RAM(4K * 32), ROM(2K * 32)
Clock : 13 MHz, 32,768 KHz
Memory
LRS1828
ROM:4M*16Bit*2
RAM:2M*16Bit
PMIC
Single-cell Li-lon Charger, SIU, LED Driver
Power-On/Off and reset control logic
8-bit ADC, Seven programmable low-drop-out regulators
1.8/3.0V SIM power supply and logic level translators
CODEC
Supports GSM 2+ new feature : multislotting( GPRS and
HSCSD)
ADC and DAC function for baseband and voice band
DAI(digital audio interface)
32.768 clock on-chip oscillator
GMSK modulator(88/144 bits)
RF Transceiver
Low-IF Receiver, Universal Baseband Interface
Offset-PLL Transmitter
Dual RF Synthesizer, GPRS Class 12 Compliant
3-Wire Serial Interface
Dual and Triple and Quad -Band Support(GSM850/E-
GSM900/DCS1800/PCS1900)
PAM
Complete Power Control Solution
Single 2.9V to 5.5V Supply Voltage
GSM, E-GSM and DCS/PCS
Products/GPRS Class 12 Compatible
+35dBm GSM Output Power at 3.5V/ +33dBm DCS/PCS Output
Power at 3.5V
FEM
GSM : 897.50 ± 17.5 MHz
DCS : 1747.50 ± 37.5 MHz
GSM : 1880.00 ± 30.0 MHz
JTAG IEEE 1149.1 Protocol Support, Flash Programming Control
UART RS-232C

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2. SGH-i300 Flow Chart of Troubleshooting
2-1
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2-1. Power On
'Power on' does not work
Yes
Yes
Press nPower key or
hardware Reset
No
No Charge the Battery
No
Yes
Charge the Battery
Check the
Pin 1 of U305 is High
Check the
Pin 1 of U323 or
U302 is High
Check the
current consumption
more than 20mA
No
Check the
Vbat more than 3.6V
Yes
Charge the Battery
No Check the
Pin 8 of U 306 is High
Check the
Pin 4 of U301 is
more than 3.3V
Yes
Check the
Pin 5 of U307 is
more than 1.0V
Yes
No Check the
Pin 1 of U 307 is High
Check the
Clock signal at
OSC101 and OSC102
No Retry Hardware Reset
Yes
Yes
Check the initial operation
Yes
END

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SGH-i300 Flow Chart of Troubleshooting and Circuit Diagrams
2-2
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1
OUT
2
VDD
R353
U323
4GND
NC
3
C346
2A
1
B
3
GND
5
VCC 4
Y
U315
VBAT
C330
R302
R311
BAT33
VBAT
R317
POWER_DET
R318
nPOWER_FAIL
3.0V
6
7SW DC 2
DEN
5
3
FET
4
GND
HOLE
81
PWR
SENSE
U306
VBAT
R307
Q302
3D
1G
2S
C317
2
5
4
VBAT
C312
U304
3
1
C348C347
C331
VBAT
R306
VBAT BAT33
C314
R308
C313
EN
3
2GND
1IN 5
OUT
4
REF_BYP
VBAT
U301
R316
R304
nPWR_SNS
END_PWR
POWER_DET
PDA_PWR_KEEP AUTO_PWR
RTCALARM
nALARM_SNS
3.0V
C308
VCC_CPU
C307
IN 5
OUT
4
REF_BYP
U302
EN
3
2GND
1
VBAT
C309
SYS_EN

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SGH-I300 Flow Chart of Troubleshooting and Circuit Diagrams
2-3
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1.25V 1.35V 1.1V
PLL13 SRAM11
R303
C327
CORE12
R312
1.35V
L301
C325
C320
R310
R309
C319
VBAT
R356
R355
C324
VFB
36
VIN
U307
4GND
2ITH
8
PLLLPFRUN
1
SW 5
S/MODE 7
C316
CORE12
PWR_EN
1.8V
VBAT VCC_MEM
C303 C302
C301
OUT
5
U305
4
BYP
3
EN
2
GND
IN
1
SYS_EN

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SGH-i300 Flow Chart of Troubleshooting and Circuit Diagrams
2-4
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2-2. Initial part
Initial Failure
Yes
Yes
Check the BAT33
No
No Check the U102
No
Yes
Download again
Check the "nTrst"
at U101 is High
Check the
"nGPIO_RESET"at the
GPIO1ofU101isHigh
Check the
"nRESET_IN" signal
at the R110 is High
Yes
Yes
END
Check the connections and
initialization using Factory Test
Program
Yes
Check the LCD connector CN501
and resolder bridge
BAT33
C146
RESET 2 VCC
3
U102
GND
1
nRESET_IN

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SGH-I300 Flow Chart of Troubleshooting and Circuit Diagrams
2-5
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2-3. Charge Part
abnormal Charging part
Yes
Yes
Replace TC
No
No Check the path from
CN605
to pin 1 of CN301
Yes
Check the
pin 1 of
CN301 = 4.2V
Check the
pin 22 of
CN605 = 4.2V
Yes
END
Charging
NC
26
4
4
5
5
6
6
7
7
8
8
9
9
25
NC
19
19
2
2
20
20
21
21
22
22
23
23
24
24
3
3
11
11
12
12
13
13
14
14
15
15
16
16
17
17
18
18
CN605
1
1
10
10
R610
R609
5
1
6
H
T
R623
9
1
6
H
T
0
2
6
H
T
3
2
6
H
T
R621
2
2
6
H
T
R624
8
2
6
H
T
6
1
6
H
T
R622
D603
1
2
6
H
T
7
1
6
H
T
D602
AUTO_PWR
VBUS
PWR_GND
CHARGE_DET
SDS_RXD
FFRXD
SDS_TXD
VBAT
VBAT
USB_D+
USB_D-
FFTXD

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SGH-i300 Flow Chart of Troubleshooting and Circuit Diagrams
2-6
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2-4. SIM Part
Phone can't access SIM
card
Yes
Yes
Check the circuit to
CN701
No
No Resolder CN701
Yes
Check the
SIM connector CN701
connection to SIM card
Check the
pin 1 of CN701
voltage is 2.8V
END
C703
55
6
6
7
GG
89
GG
10
CN701
11
22
33 4 4
C705 C706
C702
UP_RST
3
J
1
D
D
V
J13
VDD12
C11
VDD34
0
1
C
5
D
D
V
3
1
B
7
6
D
D
V
K14
SIM_CLK
J11
SIM_IO K11
SIM_RST
N9
UP_CLK
P10
UP_IO
R10
5
1
B
1
C
S
P
_
D
N
G
5
1
K
2
C
S
P
_
D
N
G
1
1
F
R
U
C
H
_
D
N
G
8
E
Q
D
N
G
C704
SIMCLK
SIMDATA
SIMRST

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SGH-I300 Flow Chart of Troubleshooting and Circuit Diagrams
2-7
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2-5. Microphone Phone
Microphone does not work
Yes
Yes
Resolder
R424,R426,R430,R431
No
No Hardware reset or
resoldering or
Download Image
Yes
Check the
Pin 23 of U401=
sine wave
Audio loopback is enabled
by board test program
R424,R431 = 2.2V
END
Check the
connecttion from CN602 Change Main key FPCB
No
Yes
ADC
SPK_COM
P_BAT
MIC_N
SPK_N
MIC_P
P_GND
INT
N.C
SPK_P
R424
3
1
Q402
2
C444
C450
C440
C457
AUDIO30
R438
R432
C442
R430
R426
C459
C490C489
C460
G
12 13
GG
14
4
5
6
7
8
9
11
G
EAR401
1
10
2
3
BAT33BAT33
C491
C446
R431
R436
3
0
4
D
Z
C453
C456
C452
R401
C455
1
2
34
5
6
ZD402
AUDIO30
R439
R425
R435
MICINN
EAR_SPKR
AUXINN
JACK_S
NC_GND
MIC+
MIC-
EAR_SPKL
SEND_END
AUXINP
MICINP

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SGH-i300 Flow Chart of Troubleshooting and Circuit Diagrams
2-8
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2-6. Speaker Part
Speaker does not work
Yes
Yes
No Hardware reset or
resoldering or
Download Image
Yes
Is there sinewave
signal on the U404 pin 12,
24
during window
media playing?
END
CN503 pin 3,4,5,6
=sinewave
Replace speaker and if
speaker is well, than
check the motor & flash
LED
No
Yes
Hardware Reset or
Download Image
No
Yes
Check the
Pin13ofU404isHigh
Hardware Reset or
Download Image
No
Check the
Pin 1 of U404 is High
C473
R422 R427
C485
C448
C487
R429
C484
R420
R419
C486
R423
R433
VBAT
C474
R428
8
VSS
9VDD
26
NC
NC
27
3VDD
4
VOMR
5
VSS
6
VOPR
7
VDD
18
VOPL
19
VDD
2
VSS
20
VSS
21
VDD
22 VIML
23 VREFL
24
VIPL
GND 25
10
VIMR
11
VREFR
12
VIPR
13
EN_R
14
VSS
15 VDD
16 VOML
17
VSS
U404
1
EN_L
C477
C407
C449
C409
C443
MSPKLN
MSPKLP
SAPA_EN SAPA_EN
MSPKRN
LOUD_GNDL LOUD_GNDR
MSPKRP
LOUD_SPKL LOUD_SPKR

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SGH-I300 Flow Chart of Troubleshooting and Circuit Diagrams
2-9
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SGH-i300 Flow Chart of Troubleshooting and Circuit Diagrams
2-10
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2-7. Receiver Part
Receiver does not work
Yes
END
Check the
R434,R437 = sine wave Replace Receiver
No
Yes
Yes
Check the
Pin 2,10 of U409
is sine wave
Check the Pin 4,8 of
U409
No
Yes
Check the
pin 3,9 of U409 is
Sine wave
Check the Pin 4,8 of
U409
No
Yes
Check the
Pin 35,36 of U401
is Sine wave
Hardware Reset or
resoldering or
Download Image
No
EAR MP3
EAR RCV
MAIN MP3
MAIN RCV
8
3
4
T
U
O
D
N
G
K
P
S
4
3
L
K
P
S
5
3
R
K
P
S
6
3
SPKVDD
0
3
O
N
O
M
1
3
OUT3
7
3
3
3
HPGND
HPL
9
3
2
P
A
C
2
3
MIC_WM_OUTN
MIC_WM_OUTP
P
O
P
_
R
A
E
LOUD_SPKL
EAR_RCVN
EAR_RCVP
U401
10
NO2V+
1
COM2 9
GND 6
4IN1
8
IN2
NC1
5
NC2 7
2NO1
U409
COM1
3
AUDIO30
C493
EAR_SPKL
JACK_S
EAR_SPKR
RCVN
RCVP
EAR_RCVN
JACK_S
EAR_RCVP

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SGH-I300 Flow Chart of Troubleshooting and Circuit Diagrams
2-11
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SGH-i300 Flow Chart of Troubleshooting and Circuit Diagrams
2-12
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2-8. Key Matrix Part
Check key initial
operation
Yes
END
Check the
Pin 3,5,7,9,11 of
CN602 is High
Check the R126,
R127,R128,R129,
R142,R143
No
Yes
No Replace the main key
PCB
Yes
When one of the
main keys is pushed
one of pin 3,5,7,9,11 of
CN602 is High?
No Replace the main key
PCB
Yes
When one of the
side keys is pushed
one of pin 3,5,7,9,11 of
CN602 is High?

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SGH-I300 Flow Chart of Troubleshooting and Circuit Diagrams
2-13
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9
2
6
H
T
4
2
6
H
T
C602
5
56
6
778
8
9
9
26
26
27
27 28 28
29 29
33
30
30
44
19 19
2
2
20 20
21
21 22
22
23 23 24 24
25 25
11 11 12 12
13
13 14
14
15 15 16 16
17
17 18
18
CN602
1
1
10
10
2
0
6
D
Z
V_LCD30VBAT
3
0
6
D
Z
C601
KBC(4)
KBC(5)KEY_LED_CONTROL
KBC(6)
KBR(3)
KBR(0)
KBR(1)
KBR(2)
KBR(4)
KBC(3)
KBC(0)
KBC(1)
KBC(2)
JOG_L
JOG_R
MIC-
nGPIO_RESET END_PWR
MIC+

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SGH-I300 Flow Chart of Troubleshooting and Circuit Diagrams
2-14
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2-9. Led Indicator Part
LED indicator does not
work
Yes
END
No Check the
R605,R612,R614,R616
Yes
Check the
Pin 2 of
Q601,Q602,Q603,Q605
is high
No Check
R601,R628,R628,R630
Yes
Check the
R627 is high
PHONE LED
PDA LED
2
3
1
Q601
23
1
Q605
LED602
3
BAT33
R616
R612
R614
R626
Q602
2
3
1
R627
R601
LED603
R602
0
3
6
R
9
2
6
R
8
2
6
R
R605
Q603
2
3
1
VBAT
RED_LED
BLUE_LED
BLUETOOTH_LED
GREEN_LED

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SGH-i300 Flow Chart of Troubleshooting and Circuit Diagrams
2-15
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SGH-I300 Flow Chart of Troubleshooting and Circuit Diagrams
2-16
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2-10. Backlight Part
Backlight does not work
Yes
END
Yes
Yes
Backlight "ON" mode
in the menu
No Select backlight
"ON" mode
No Check the U501
Yes
Check the
Pin 24 of CN501
is high
No Check the R502
Yes
Check the
connection
from CN501
No Replace LCD module
LCD backlight on?
12V
C530
CTRL FB 3
2
GND
6SW
VIN
5
VOUT 1
U501
4
C526 C528
R509
C527 C529
R502
R503
L501
VBAT
C531
LED-
LED+
LCD_PWM

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SGH-i300 Flow Chart of Troubleshooting and Circuit Diagrams
2-17
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2-11. EGSM Receiver
Continuous RX on
RFinput : 62CH AMP :
-50dBm
Yes
Normal
Condition catch
the channel?
No
Check soldered status
of C933,L901
Yes
F903 check
pin6 = -65dBm
No
ANT902 resolder or
change
Yes
F903 check
pin 10,11 = -65dBm
No
F903 resolder or
change
Yes
U902 check
pin 20.21 = -65dBm
No
C924, C925, L903
resolder or change
U902 check
pin 8 = 13M ?
Vp-p : 860mV
TCX701 check
pin3 = 13M ?
Vp-p : 950mV
TCX701 check
pin 4 = clean 3V?
U701 pin B10, C709,
C710
check or resolder
No No
U902 check
pin 9,32
clean 2.8V
U902 check
pin 1,2
Vp-p:250mV
U902 check
pin 1,2,3,28
Vp-p=100mV
No
No
No
C726, R705
check or resolder
TCX701 change or
resolder
U701 pin A13, C712
Check or resolder
U902 check or resolder
U902 check or resolder
Check U701
Yes
Yes
Yes
Yes
No
Yes Yes