Samsung SGH-E620 User manual

GSM TELEPHONE
SGH-E620
GSM TELEPHONE CONTENTS
1. Specification
2. Flow Chart of Troubleshooting
3. Exploded Views and Parts List
4. Electrical Parts List
5. Block Diagrams
6. PCB Diagrams

1. SGH-E620 Specification
1-1
1-1. GSM General Specification
GSM900
Phase 1
EGSM 900
Phase 2
DCS 1800
Phase 1 PCS1900
Freq. Band
[MHz]
Uplink/Downlink
890~915
935~960
880~915
925~960
1710~1785
1805~1880
1850~1910
1930~1990
ARFCN range 1~124 0~124 &
975~1023 512~885 512~810
Tx/Rx spacing 45MHz 45MHz 95MHz 80MHz
Mod. Bit rate /
Bit Period
270.833kbps
3.692us
270.833kbps
3.692us
270.833kbps
3.692us
270.833kbps
3.692us
Time Slot
Period / 576.9us
4.615ms
576.9us
4.615ms
576.9us
4.615ms
576.9us
4.615ms
Modulation 0.3GMSK 0.3GMSK 0.3GMSK 0.3GMSK
MS Power 33dBm~5dBm 33dBm~5dBm 30dBm~0dBm 30dBm~0dBm
Power Class 5pcl ~ 19pcl 5pcl ~ 19pcl 0pcl ~ 15pcl 0pcl ~ 15pcl
Sensitivity -102dBm -102dBm -100dBm -100dBm
TDMA Mux 8 8 8 8
Cell radius 35Km 35Km 2Km 2Km

SGH-E620 Specification
1-2
Tx Power
control level PCS1900
030±3dBm
128±3dBm
226±3dBm
324±3dBm
422±3dBm
520±3dBm
618±3dBm
716±3dBm
814±3dBm
912±4dBm
10 10±4dBm
11 8±4dBm
12 6±4dBm
13 4±4dBm
14 2±5dBm
15 0±5dBm
1-2. GSM Tx Power Class
Tx Power
control level DCS1800
030±3dBm
128±3dBm
226±3dBm
324±3dBm
422±3dBm
520±3dBm
618±3dBm
716±3dBm
814±3dBm
912±4dBm
10 10±4dBm
11 8±4dBm
12 6±4dBm
13 4±4dBm
14 2±5dBm
15 0±5dBm
Tx Power
control level GSM900
533±3dBm
631±3dBm
729±3dBm
827±3dBm
925±3dBm
10 23±3dBm
11 21±3dBm
12 19±3dBm
13 17±3dBm
14 15±3dBm
15 13±3dBm
16 11±3dBm
17 9±3dBm
18 7±3dBm
19 5±3dBm

2. SGH-E620 Flow Chart of Troubleshooting
2-1
2-1. Power On
check the current
consumption more
than 100mA
Download again
'Power ON' does not work
No
Yes
Yes
END
Yes
Check the Initial Operation
Check U100
Yes
Yes
Check U100
pin A13 =
2.8V
No U100 pin
C12 = 1.8V
No
Yes
Charge the battery
No
Check the Voltage
of the Battery more
than 3.5V
check keypad
No
Check the pin J12
of U100 is more
than 2.8V
Check
"Power On"
key?
No
check U100 and C103
Yes 1
2
1
12

SGH-E620 Flow Chart of Troubleshooting
2-2
VCCA_2.8
G
910
G
1
22
334
4
55
6
6
G
78
G
VCCD_1.8
CN100
1
C110
VCCD_2.8
C115
VCCD_1.5
VBAT
C109
VCCB_2.8
A13
VLDO_4 B12
VLDO_5 B10
VLDO_6 A14
VLDO_7 C12
VRTC H11
VSIM K12
VEXT E14
VIB_DRV F15
VL4S_A A12
VL4S_B B11
VL5S_A D10
C9
VL5S_B
VLDO_1 G11
VLDO_2 J12
VLDO_3
VDD12 J13
C11
VDD34
5
D
D
V0
1
C
SIM_CLK K14
SIM_IO J11
SIM_RST K11
UP_CLK N9
UP_IO P10
UP_RST R10
VACC F14
VBAT E13
SCLK_PSC L8
M7
SDI_PSC
SDO_PSC N7
RING_DRV F13
LED1_DRV G13
LED2_DRV G12
CH_BDRV E11
CH_ISEN F12
CH_RES D14
K8
CSN_PSC
ADC_AUX1 E10
ADC_AUX2 D15
VRF_2.8
C108
C117
C107
C111
C114
C103
C119
C113
C116
C112
VBAT
VRTC_1.5
C118
C104
UP_CS
KEY_BACKLIGHT
UP_SDO
UP_SDI
UP_SCLK
DCS_TX_EN
GSM_TX_EN
SIMRST
SIMDATA
SIMCLK

SGH-E620 Flow Chart of Troubleshooting
2-3
2-2. Initial
END
Yes
Check the signal at
thepinC15ofU100is
"LOW" when the
phone is boot on
Initial Failure
Check pin4 of OSC200
Voltage is 2.8V ?
Check OSC200
L708,pin A13 of U100,
OSC700,C113
No
Yes
Yes
No
No
Check pin10 of U302
Voltage is 2.5V?
Check or Change U301
Yes
Yes
No
Check pin3 of OSC700,
Frequency is 13MHz? Check or change OSC700
Check OSC300 is
working?
No
Check the soldered status of U302,
U200
1
2
3
4
5

SGH-E620 Flow Chart of Troubleshooting
2-4
1
2
2
2
3
4
4
5

SGH-E620 Flow Chart of Troubleshooting
2-5
OSC200
C215
C
T
R
1
X
9
1
H
9
1
FC
T
R
2
X
N
E
_
D
M
C
_
I
C
M
_
9
3
O
I
P
N
E
_
T
A
D
_
I
C
M
_
0
4
O
I
P
4
1
M
4
1
NN
E
_
0
T
A
D
_
I
C
M
_
3
4
O
I
P
J16
PIO47
5
G6
4
O
I
P
_
1
M
W
P
N
M
R
A
L
A
C
T
R
7
1
H
9
1
U
7
1
W8
2
O
I
P
2
3
O
I
P
3
1
R
U18
PIO33
PIO34 R14
4
1
L
5
1
PP
E
E
K
R
W
P
_
9
1
O
I
P
Q
E
R
K
L
C
S
Y
S
_
0
2
O
I
P
9
1
P
3
1
K0
T
A
D
_
I
C
M
_
1
2
O
I
P
1
T
A
D
_
I
C
M
_
2
2
O
I
P
2
1
L
3
1
L2
T
A
D
_
I
C
M
_
3
2
O
I
P
3
T
A
D
_
I
C
M
_
4
2
O
I
P
5
1
L
9
1
V5
2
O
I
P
6
2
O
I
P
6
1
U
7
2
O
I
P
6
1
GT
U
O
2
3
C
S
O
D
M
C
_
I
C
M
_
8
0
O
I
P
3
1
J
0
1
O
I
P
7
1
V
IRQ1 M16
M19
IRQ2
IRQ3 P17
P18
IRQ4
C216
USB_DET
BT_POW_EN
SPK_ON
D
N
G
16
5N/C
N/C 8
7
N/C
1VIN VOUT1 10
9
VOUT2EN1
2
3EN2
GND 6
11
D
N
G
D
N
G
12 13
D
N
G
D
N
G
14 15
D
N
G
U302
CBYP
4
C316
CAM_1.8
C314
R309
VBAT
C313
C315
CAM_2.5
C317
CAMPWR_EN
R110
VBAT
VREF A10
N
E
_
G
N
R
_
B
I
V
9
L
P
E
E
K
_
R
W
P
9
M
N
1
W
S
_
R
W
P
5
1
C
2
W
S
_
R
W
P
4
1
C
9
KO
_
T
E
S
E
R
RTC_ALMN H10
F
U
B
_
1
W
S
P
7
L
E
D
O
M
0
1
N
Q
R
T
N
I
0
1
L
E9
CREF
ADC_AUX1 E10
ADC_AUX2 D15
R109
C120 C121
F
U
B
_
1
W
S
P
PWR_KEEP
RTCALARM
RST
N
O
_
G
I
J
N
O
_
R
W
P
INTRQ

SGH-E620 Flow Chart of Troubleshooting
2-6
C312
R306
XIN
XOUT A1
A2
NC 2
1
NC
C310
OSC300
2
43
1
R702
BUFFIN
56
BUFFOUT
2
GND
3
OUT VCC
4
VCONT
1
OSC700
C709
10NF
16V
R705
R701
L708
C706
C704
C707
100PF
50V
C708
R704
R703
C711
VRF_2.8
C705
AFC
CLK13M_RF CLK13M_TR
CLK13M_MC
CLK13M_NEC

SGH-E620 Flow Chart of Troubleshooting
2-7
2-3. Sim Part
* Test with Sim
Check the pin 1 of
Phone can't access SIM card
Check the SIM
connector's (CN100)
connection to SIM
card
Check the circuit related to U100
Resolder or change CN100
END
No
Yes
Yes
Yes
No
Check the circuit
around CN100 input
circuitry
Check the related circuit of CN100
Yes
No
Check the circuit
around U200 output
and voltage supply
circuitty
Check the related circuit of U200 and
U100
Yes
No
1
2
3
4
1
23
4
4