Samsung SGH-E620 service manual, samsung service manuals schematy serwisowki
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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. 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
1-
1
SGH-E620 Specification
1-2. GSM Tx Power Class
Tx Power
control level
GSM900
Tx Power
control level
DCS1800
Tx Power
control level
PCS1900
5
33
±
3dBm
0
30
±
3dBm
0
30
±
3dBm
6
31
±
3dBm
1
28
±
3dBm
1
28
±
3dBm
7
29
±
3dBm
2
26
±
3dBm
2
26
±
3dBm
8
27
±
3dBm
3
24
±
3dBm
3
24
±
3dBm
9
25
±
3dBm
4
22
±
3dBm
4
22
±
3dBm
10
23
±
3dBm
5
20
±
3dBm
5
20
±
3dBm
11
21
±
3dBm
6
18
±
3dBm
6
18
±
3dBm
12
19
±
3dBm
7
16
±
3dBm
7
16
±
3dBm
13
17
±
3dBm
8
14
±
3dBm
8
14
±
3dBm
14
15
±
3dBm
9
12
±
4dBm
9
12
±
4dBm
15
13
±
3dBm
10
10
±
4dBm
10
10
±
4dBm
16
11
±
3dBm
11
8
±
4dBm
11
8
±
4dBm
17
9
±
3dBm
12
6
±
4dBm
12
6
±
4dBm
18
7
±
3dBm
13
4
±
4dBm
13
4
±
4dBm
19
5
±
3dBm
14
2
±
5dBm
14
2
±
5dBm
15
0
±
5dBm
15
0
±
5dBm
1-
2
2. SGH-E620
Flow Chart of Troubleshooting
2-1. Power On
'Power ON' does not work
check the current
consumption more
than 100mA
No
Download again
Yes
Check the Voltage
of the Battery more
than 3.5V
No
Charge the battery
Yes
Check the pin J12
of U100 is more
than 2.8V
No
Check
"Power On"
key?
No
check keypad
Yes
check
U100
and
C103
1
Yes
Check U100
pin A13 =
2.8V
No
U100 pin
C12 = 1.8V
No
Check
U100
2
Yes
Yes
1
Check the Initial Operation
1
2
Yes
END
2-
1
SGH-E620 Flow Chart of Troubleshooting
VBAT
C104
C103
CN100
6
6
1
22
3
1
5
5
4
4
3
G
78
G
G
910
G
C109
C108
C107
C110
C111
VDD34
C11
VDD12
J13
UP_CLK
N9
SIMCLK
UP_RST
R10
SIMRST
SIMDATA
UP_IO
P10
SIM_IO
J11
SIM_RST
K11
SIM_CLK
K14
VRTC_1.5
VSIM
K12
VRTC
H11
LED2_DRV
G12
VCCB_2.8
LED1_DRV
G13
KEY_BACKLIGHT
VCCD_1.8
VCCA_2.8
VRF_2.8
VCCD_2.8
VCCD_1.5
RING_DRV
F13
VIB_DRV
F15
VLDO_7
C12
VLDO_6
A14
VL5S_B
C9
VL5S_A
D10
C112
VLDO_5
B10
VL4S_B
B11
DCS_TX_EN
GSM_TX_EN
VL4S_A
A12
VLDO_4
B12
VLDO_3
A13
VLDO_2
J12
VLDO_1
G11
VACC
F14
CSN_PSC
K8
UP_CS
SCLK_PSC
L8
UP_SCLK
C113
C114
C115
SDO_PSC
N7
UP_SDO
UP_SDI
SDI_PSC
M7
C117
C118
C116
C119
VEXT
E14
CH_BDRV
E11
CH_ISEN
F12
CH_RES
D14
VBAT
ADC_AUX2
D15
2-
2
VBAT
E13
ADC_AUX1
E10
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