Samsung SGH-E105 User manual

SGH-E105
SERVICE
Manual
GSM TELEPHONE CONTENTS
1. Specification
2. Exploded Views and Parts List
3. Electrical Parts List
4. Flow Chart of Troubleshooting
5. Block Diagrams
6. PCB Diagrams
GSM TELEPHONE

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2. SGH-E105 Exploded View and its Parts list
2-1
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1. Cellular phone Exploded View
7
8
96
1
3
4
5
10
11
12
13
17
22
18
19
20
21
2
14
16
15

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5. SGH-E105 Block Diagrams
5-1
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1. RF Solution Block Diagram
FEM
RF
FILTER
100KHz
PGA
PGA
CHANNEL
FILTER
DAC
DAC
SI4201
1/2
PGA
PGA
ADC
ADC
N
L
A
DET
SI4200
SERIAL DATA
INTERFACE
DSP16000
ARM7TDMI
CSP1093
UI
GSM:890MHz~915MHz
PCS:1850MHz~1910MHz
GSM:925MHz~960MHz
PCS:1930MHz~1990MHz
Antenna
TX VCO
PAM
I
Q
AFC
CLK
TCVCXO
13MHz
I
Q
TRIDENT
RF
PLL
IF
PLL
SI4133T
BASE
BAND
AUDIO
TXPOWER

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SGH-E105 Block Diagrams
5-2
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2. Base Band Solution Block Diagram
ACC
RTC
PPI
(Programmable
Peripheral I/O)
JTAG/ICE
DSP16000
ARM7TDMI
EMI
IO
RWN
AB(8:0)
DB(15:0)
INT1
IRQx
PAx
RSTB
DSPJTAG
LCD
KEYBOARD
SMART
CARD
POWER
(DC/DC, CHARGER)
MCP
128M FLASH
16M SRAM
Memory Part
X-TAL
32.768 KHz
IRDA
ARM
JTAG/ICE
SIM I/O
GPIO
RS232
TRIDENT
IO
RWN
AB(8:0)
DB(15:0)
INT1
IRQx
PAx
RSTB
JTAG
<RF DRIVER>
TX I/Q
RX I/Q
TXP
SERCK
SERLE
SERDA
OCTL
DAICK
DAIRN
DAIDO
DAIDI
AUDIO PART
CSP1093 TXIP
TXIN
TXQP
TXQN
RXIP
RXIN
RXQP
RXQN
SERCK
SERLE
SERDA
RXOVL
TXP
OCTL
RF SOLUTION
-RFIC
-PAM
X-TAL
13MHz
DAI
AUDIO
LCD
MOTOR
B'D to B'D Connector

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4. SGH-E105 Flow Chart of Troubleshooting and Circuit Diagrams
4-1
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1.Baseband
1. Power ON
Check the current
consumtion more than
100mA
Check the
Vbat(battery+O)
Voltage more than
3.3V
Download again
NO
Charge the Battery
NO
Check U100 and C113
NO
YES
YES
YES
YES
'Power On' does not
work
Check the pin
15 of U100 is more
than 2.8V
U100 pin 46,39
=2.8V
U100 pin 13
=1.8V
Checktheclocksignal
at
pin4 of U800
Freq=13MHz ?
Vrms°√300mV ?
Vpp is around
900mVpp
Check the clock generation circuit
(related to OSC801 and U800)
NO
'Power On' does not
work
YES
END
YES
Check C114 and C116
NO
Check C112
NO

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SGH-E105 Flow Chart of Troubleshooting and Circuit Diagrams
4-2
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2. Initial
Check the signal at the
pin28ofU100is
"High" when the phone
is boot on
Check the pin 22 of
U100 is "High"
Check U100
NO
Check the U700
NO
Check the soldered status of
OSC801, R803, U100
NO
YES
YES
YES
Initial Failure
Check the pin 4 of
OSC801 is around 2.8V
Check and resolder LCD connector CN200
if there is solder bridhe between the pins
END
YES

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SGH-E105 Flow Chart of Troubleshooting and Circuit Diagrams
4-3
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3. Sim Part
Check the SIM
connector's (CN100)
connector's to SIM card
Check the circuit related to
U100
NO
resolder or change CN100
NO
Check the related circuit of
CN100
NO
YES
YES
YES
Phone can't access SIM card
Check the circuit around U601 output
and voltage supply circuitry
END
YES
Check the pin 1 of CN100.
Voltage = 3V?
Check the circuit around CN100 input
circuitry
Check the related circuit of
U601 and U100
NO

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SGH-E105 Flow Chart of Troubleshooting and Circuit Diagrams
4-4
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4. Charging Part
Check U100
NO
Check the U700
NO
Check the Q101
NO
YES
YES
YES
Abnormal charging part
END
YES
Check the pin 17,18 of
CN302 VEXT is > 4V?
Check the pin 2 of U103
is "LOW"?
Check the pin 3 of Q101
is "LOW"?
Check the pin 5 of U102
is "3.2~4.2"?
Check if ICHRG is 1V
(during charging) and
around 180mV(full
charging)
YES
Check the U102
NO
Resolder or change R111
NO

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SGH-E105 Flow Chart of Troubleshooting and Circuit Diagrams
4-5
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PWR_SW1
TP101
VRTC
C11
5
2.2UF
C1142.2UF
VBAT
C10947NF
VCCB
C108
100NF
C124
100NF
47P
F
C102
3
1
2
R100
1.2K
D100R112
47K,1%
2.2UF
C116
C128
1UF
100N
F
C104
10UF
10
V
C127
C107
33P
F
R102
390K
C11
2
2.2UF
VCCA
GND
1
IN
5OUT
4REF_BYP
C103
33PF
U101
EN3
2
R101
VBAT
1
3
2
0
2
5
6
3
1
4
Q100
R111
U103
0
VOSC
VCCD
C126
10UF
10V
C119
100NF
R106
0
100NF
C125
VRTC
C111
2.2UF
100PF
C118
2.2UF
VBAT
G
8
9
G
G
10
C123
1
1
223
34
4
55
6
6
7
G
C117
2.2UF
CN100
R113
3K
VBAT
VPAC
C105
2.2U
F
6
GND
2
1ISENSE
PROG4
3VCC
5
VSENSE
U102
DRIVE
33_RTC_ALM
M1
2
NEG1
POS
VLDO_752
35
VREF
12
VRTC
VSIM
60
18_CS
51
_RESET_I
27
28_RESET_O
38
VL5S_A
VL5S_B37
VLDO_649
VLDO_113
VLDO_215
46
VLDO_3
VLDO_444
VLDO_539
48
VDD6
VDD753
VDDCP58
5
VDDQ
4VEXT
VIB_DRV8
VL4S_A43
42
VL4S_B
64UC_IO
66UC_RST
VACC
7
6
VBAT
14
VDD12
VDD347
45
VDD440
VDD5
RING_DRV9
19
RING_PWM
17SCLK
16SDI
SIM_CLK
62
63SIM_IO
61SIM_RST
UC_CLK
65
56
10
GNDD1
GNDQ41
LED_DRV11
PSW1BUF
30
31PSW2BUF
PWR_KEEP
32
50PWR_SW2
26EN_R
67EOR_ACC
69
GND
GND70
71
GND
GND72
36
GNDA
GNDA55
GNDCP
34
1CHG_STAT0
EN_3
20
21EN_4/EN_4S
EN_
5
22
EN_5S
23
24EN_6
EN_7
25
ACC_ALM
68
BAT_TEMP54
3CFET_DRV
CHG_DET
29CHG_STAT1
2
57CPCN
59CPCP
CREF
330K
U100
R110
2.2UF
2.2UF
C120
C113
C106
33PF
VCC_1.8A
R103
2.4
VRF
1
2
5
6
4
Q101
3
C1057330NF
TA_VEXT
C101
2.2UF
PWR_KEEP
TA_VEXT
CHG_ONICHRG
TA_VEXT
VIB_EN
LCDVIB_EN
CHG_DET
RESET_INT
PWR_ON
JIG_ON
RTCALARM
EN_VRF
EN_VPAC
XOENA
UP_SDI
UP_SCLK
UP_CS
KEY_ROW(0)
KEY_COL(2)
BACKLIGHT
RST
VREF
SIMRST
SIMCLK
SIMDATA

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SGH-E105 Flow Chart of Troubleshooting and Circuit Diagrams
4-6
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5. Microphone Part
6. Speaker Part
Check the reference
voltage on mic path
C418 =2.5V
Reassemblage microphone
NO
resolder or change
C400,R428,R409,R405,R406)
NO
Check U700
NO
YES
YES
Microphone does not work
END
YES
Check the assembled
status of microphone.
Is microphone ok?
Resolder and check the board
to board connector
NO
Check U601
NO
Change or resolder
U700, R201, R202
NO
YES
YES
YES
Speakerdoesnotwork
END
Check the connection
status spk to CN200
Check the PIN 1 of
U402 = 'High' ?
Check U700, R201, R202
Is speaker ok?
YES
Change Speaker
NO
YES