Samsung SGH-E710 User manual

SGH-E710
SERVICE
Manual
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
GSM TELEPHONE

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1. SGH-E710 Specification
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1-1
GSM900
Phase 1 EGSM900 Phase 2 DCS1800 Phase 1
Freq. Band[MHz]
Uplink/Downlink
890~915
935~960
880~915
925~960
1710~1785
1805~1880
ARFCN Range 1~124 0~124 &
975~1023 512~885
Tx/Rx Spacing 45MHz 45MHz 95MHz
Mod. Bit Rate/
Bit Period
270.833KHz
3.692us
270.833KHz
3.692us
270.833KHz
3.692us
Time Slot Period
/Frame Period
576.9us
4.615ms
576.9us
4.615ms
576.9us
4.615ms
Modulation 0.3GMSK 0.3GMSK 0.3GMSK
MS Power 33dBm~13dBm 33dBm~13dBm 33dBm~13dBm
Power Class 5pcl~15pcl 5pcl~19pcl 0pcl~15pcl
Sensitivity -102dBm -102dBm -100dBm
TDMA Mux 8 8 8
Cell Ridius 35Km 35Km 2Km
1. GSM General Specification

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SGH-E710 Specification
1-2
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2. GSM TX power class
TX Power
Control Level GSM900
533±2dBm
629±2dBm
727±2dBm
825±2dBm
923±2dBm
10 21±2dBm
11 19±2dBm
12 17±2dBm
13 15±2dBm
14 13±2dBm
15 11±2dBm
16 9±3dBm
17 7±3dBm
18 5±3dBm
19 3±3dBm
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

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2. SGH-E710 Flow Chart of Troubleshooting
2-1
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1. Power ON
'Power ON' Does not work
Check the current consumption
Current consumption
≥100mA ?
Check the V bat. voltage
Down load again
Voltage ≥ 3.3V ?
Check the pin of U100
pin #11 ≥ 2.8V ?
Pin #9=1.8V?
Check the Initial operation
END
pin #39 and #33 = 2.8V
Charge the Battery
Check the clock generation
circuit (OSC400, U402 pin#4)
Check the clock signal
at pin #3 of OSC400
Freq.=13MHz,Vrms 300mV
Check U100 and C109
Check U100 and C110
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES

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SGH-E710 Flow Chart of Troubleshooting and Circuit Diagrams
2-2
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2. System Initial
The pin #9 of U100 = 1.8V
and pin #11 of U100=2.8V?
Initial Failure
Is the pin #19 of U100
" Low --> High" ?
There is 32.768KHz wave
form at the C324, C325 ?
Is the pin #25 of U100
is High ?
The voltage is "High"
at the C106,C112,C113 ?
LCD Display OK ?
Sound operation OK ?
END
Check the U303
Check the U300
Check the U100
Check the LCD part
Check the Audio part
YES
NO
NO
NO
NO
YES
YES
YES
YES
YES
NO
NO
NO
YES
Check the U100
(If it has some problem,
it has to be replaced.)
Check the U100
(If it has some problem,
it has to be replaced.)

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SGH-E710 Flow Chart of Troubleshooting and Circuit Diagrams
2-3
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3. SIM Part
Is there any signal
pin #52,53,54 of U100 ? Check the U303
"Insert SIM" is displayed on the LCD
END
Check the SIM Card
YES
NO
NO
YES
Is there any signal
pin #1,2,3,6 of CN100 ? Check the U100

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SGH-E710 Flow Chart of Troubleshooting and Circuit Diagrams
2-4
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4. Charging Part
The pin #17,18 of CN101
(VEXT) is 5V ? Replace TA or check CN101
Abnormal charging operation
END
Check the U102
YES
NO
NO
The pin#2 of U102 is Low?
YES
The pin#3 of U102 is Low?
YES
Check the U102
NO
The pin#5 of U101 is
3.2~4.2V? Check the U101
NO
The ICHRG =1V(during charging)
&180mV(fullcharging)?
YES
YES
Solder again or change
R119
NO

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SGH-E710 Flow Chart of Troubleshooting and Circuit Diagrams
2-5
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100NF
C105
C103
470NF
VRF
10UF
10V
R120
47K,1%
Q102
DTC144EM
1
3
2
C116
100PF
C115
C107
10UF
10V
3K
2.2UF
C111
R121
12
VRTC
48
VSI
M
VLDO_1
11
VLDO_2
VLDO_3 39
37
VLDO_4
33
VLDO_5
VLDO_6 42
VLDO_7 40
30
VREF
34
VDD5
41
VDD67
VEXT
1
4
VIB_DRV
VL4S_A 36
35
VL4S_B
VL5S_A 32
31
VL5S_B
9
49
UP_CLK
53
52 UP_IO
54 UP_RST
3 VACC
2 VBAT
VDD12 10
38
VDD34
5
55 RING_PWM
RTC_ALMN
13
17 SCLK
15 SDI
16 SDO
50
SIM_CLK
SIM_IO
51
SIM_RST
14
LED1_DRV
78
LED2_DRV
20 PSW1_BUF
PWR_KEEP
21
46 PWR_SW1N
PWR_SW2
47
19
RESETN
RING_DR
V
62GN
D
GN
D
63
64GN
D
65GN
D
GN
D
66
GNDD
60
6
GNDD1
GNDQ
28
INTRQ
26
27
EN_5B
57 GND
67GN
D
GN
D
68
GND
58
59 GND
GN
D
61
56
43 BTEMP
CREF
29
CSN
18
EN_3
22
23
EN_4[0]
EN_4[1]
24
25
EN_5
EN_5A
U100
44 ADC_AUX1
ADC_AUX2
45
ADC_TRIG
1
3
2 Q100
C100
33PF
G
89
GG
10
VRTC VBAT
1
1
2 2
3
3
4 4
5
5
6 6
7
G
1.2K
CN100
VCCA
R115
VPAC
10K,1%
R118
C109
2.2UF
VCC B
2.2UF
C112
2.2UF
C106
DRIVE
6
GND
2
1 ISENSE
PRO G 43 VCC
5
VSENSE
U101
R11 0
390K
VRTC
10K,1%
R119
C102
33PF
2
NE
G
1
PO
S
M1
VCCDVCC_1.8A
R114
330K
C117
10UF
10V
VBAT
C104
100NF
1
4
U103
2
5
6
3
C108 C114
2.2UF
VOSC
470NF
C113
10UF
10V
C101
33PF
VBA T
C110
2.2UF
2
5
6
4
Q101
3
1
VREF
BACKLIGHT1
BACKLIGHT2
RST
RTCALAR M
PWR_KEEP
EN_VPAC
XOENA
UP_SDI
UP_SCLK
UP_CS
TA_VEXT
CHG_ON
SIMCLK
SIMRST
SIMDATA
KEY_ROW(0)
KEY_COL(2)
CHG_DET
PWR_ON
JIG_ON
EN_VRF
ICHRG
TA_VEXT
TA_VEXT

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SGH-E710 Flow Chart of Troubleshooting and Circuit Diagrams
2-6
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5. Microphone Part
Micro-phone does not work
Is the assembled status of
Microphone O.K?
YES
Reassemble the microphone
NO
Check the DC bias voltage on
Mic path.
The voltage of C237 is
2.2V±10%?
NO Solder the microphone again
or Replace
C230,C237,R217,R218,R219
Is microphone OK? NO Check U300
END
YES
YES

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SGH-E710 Flow Chart of Troubleshooting and Circuit Diagrams
2-7
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6. Speaker Part
Is the terminal of speaker
is O.K?
NO Replace the speaker
Are there any signal
at the pin #40,42 of CN200?
NO Check the LCD module
& Replace CN200
There is no sound from speaker
YES
YES
Thetypeofsoundfrom
the speaker is Melody?
YES NO
Are there any signal
at the pin #5,7 of U201?
Are there any signal
at the pin #3,9 of U201?
Check
U201,
U303
NO NO
Pin #4 of U201
is Low?
Pin #4 of U201
is High?
Check U202 Check U300
NO NO
YES YES
YES
YES
END

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SGH-E710 Flow Chart of Troubleshooting and Circuit Diagrams
2-8
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JACK_IN
EAR_SPK_P
EAR_MIC_P
EAR_SPK_N
EAR_MIC_N
R238
0
C261
39PF
R241NC
R219
R240NC
51K
1.2K
R235
R223
4.7K
ZD203
8PF
C234
1UF
C230
820PF
R2291NF
C249
C240
33UF
C236
33UF
6.3V
6.3V
39PF
C243
C239
1UF
1K
R230
82K,1%
R231
VCCA
R239
0
R237
0
470nF
C238
39PF
33UF
C237
C260
4.7K
R221
82PF
C245
1K
R233
1K
R232
TH200
L200
100nH
ZD201
C242
180PF
C248
1NF
R225
10K
33PF
C244
ZD202
VCCD
R228
560PF
MAIN_MIC
47K,1%
R218
3
1
R217
10K
Q200
2
33PF
C241
C247
33PF
5
6
ZD200
CN201
1
2
3
4
39PF
C233
R220
100K
NC
0
R226
47K,1%
R234
R227
1NF
C246
100nH
L201
1
1
2
23
3
4
4
F200
C232
1NF
R222
VCCA
100nH
R224
100nH
VCCA
33PF
C235
AUXIN
JACK_IN
EAR_SWITCH
AOUTBP
AOUTBN
AUXOUT
MICOUT
MICIN

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SGH-E710 Flow Chart of Troubleshooting and Circuit Diagrams
2-9
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7. Camera Part
Camera function does not work
Check the connect CN200?
NO Connect the CN200
Pin #9 of U203 = 2.8V?
NO
NO
Pin#3 of OSC200 is 25MHz?
NO
Pin #10 of U203 = 2.8V?
Check
U200
END
YES
YES
YES
YES
Pin#1 of OSC200 = High?
NO
Pin #2 of U203 = High?
YES
Check the U203
Check
U303
NO
NO
Pin#54 of CN200 is High? Check solder status of
R207, C208
Replace the OSC200
YES

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SGH-E710 Flow Chart of Troubleshooting and Circuit Diagrams
2-10
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8. EGSM Receiver
Continuous RX ON
RF Input : 62 CH
AMP : -50dBm
NORMAL CONDITION
Catch the channel ?
YES
NO
F400 Check
Pin #6 ≥ -65dBm ?
F400 Check
Pin #11 ≥ -65dBm ?
U401 Check
Pin#20,21 ≥ -65dBm ?
Check soldered status of
C400,402
CN400
Resolder or Change
F400 Resolder or Change
U401 Check
Pin#9,32=Clean 2.8V?
U401 Check
Pin#28,1,2,3=100mV?
U100,C106,C112
Check or resolder
Check U300
NO
NO
YES
YES
YES
YES
NO
YES
U401 Check
Pin #8 : 13MHz ?
Vpp : 860mV?
OSC400 Check
Pin #8 : 13MHz ?
Vpp : 950mV?
OSC400 Check
Pin #4 = 2.8V ?
U401
Change or resolder
NO
NO NO
R412,C426
resolder
OSC400
Change or resolder
YES YES YES
NO
Check soldered status of
C415,417,L406,F403
F403 Check
Pin #1 ≥ -65dBm ?
Check soldered status of
L410 &
F400 Resolder or Change
NO
YES
NO

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SGH-E710 Flow Chart of Troubleshooting and Circuit Diagrams
2-11
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9. EGSM Transmitter
Continuous TX ON condition
TX Power Code : 500 code Applied
CH : 62
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF. Level : 10dBm
ATT. : 20dB
C403
=3.7V?
Change U400
NO
YES
F400 Pin#6
About 2~3 dBm? F400
Pin#10 = High? U300,301
Check & Change
NO
C402,CN400
Check & Change
YES
F400
Check & Change
YES
Check the
Battery Block
Level of
U400 Pin #6 is
1.2V?
Check
&ChangeR406
OK ?
U300
Check & Change
YES
YES
NO
NO NO
NO
U400 pin#7
About -5 dBm?
U400 pin#3
High ? Check U300
YES
NO
YES
U401 Check
Pin#9,32 ≥ 2.8V ?
U401 Check
Pin #8 : 13MHz ?
Vpp : 860mV?
OSC400 Check
Pin #8 : 13MHz ?
Vpp : 950mV?
OSC400 Check
Pin #4 = 2.8V ?
NO
YES
NO
NO NO
R412,C426
resolder
OSC400
Change or resolder
YES YES YES
NO
U100,C106,C112
Check or resolder
U401 Pin
#4,5,6,7 = 1.7V?
YES
Change U400Check U300
NO
YES
Level of
F400 Pin#7 is
4~5dBm ?

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2-12
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10. DCS Receiver
Continuous RX ON
RF Input : 660 CH
AMP : -50dBm
NORMAL CONDITION
Catch the channel ?
YES
NO
F400 Check
Pin #6 ≥ -65dBm ?
F400 Check
Pin #3 ≥ -65dBm ?
U401 Check
Pin#18,19 ≥ -65dBm ?
Check soldered status of
C400,402
CN400
Resolder or Change
F400 Resolder or Change
U401 Check
Pin#9,32=Clean 2.8V?
U401 Check
Pin#28,1,2,3=100mV?
U100,C106,C112
Check or resolder
Check U300
NO
NO
YES
YES
YES
YES
NO
YES
U401 Check
Pin #8 : 13MHz ?
Vpp : 860mV?
OSC400 Check
Pin #8 : 13MHz ?
Vpp : 950mV?
OSC400 Check
Pin #4 = 2.8V ?
U401
Change or resolder
NO
NO NO
R412,C426
resolder
OSC400
Change or resolder
YES YES YES
NO
Check soldered status of
C407,414,L405,F402
F402 Check
Pin #1 ≥ -65dBm ? Check soldered status of
L410,C430
NO
YES
NO

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SGH-E710 Flow Chart of Troubleshooting and Circuit Diagrams
2-13
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11. DCS Transmitter
Continuous TX ON condition
TX Power Code : 350 code Applied
CH : 660
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF. Level : 10dBm
ATT. : 20dB
C403
=3.7V?
Change U400
NO
YES
F400 Pin#6
About 2~3 dBm? F400
Pin#4 = High? U300,302
Check & Change
NO
C402,CN400
Check & Change Level of
F400 Pin#5 is
4~5dBm ?
YES
F400,L401,C408,C410
Check & Change
YES
Check the
Battery Block
Level of
U400 Pin #6 is
1.2V?
Check
&ChangeR406
OK ?
U300
Check & Change
YES
YES
NO
NO NO
NO
U400 pin#1
About -5 dBm?
U400 pin#3
High ? Check U300
YES
NO
YES
U401 Check
Pin#9,32 ≥ 2.8V ?
U401 Check
Pin #8 : 13MHz ?
Vpp : 860mV?
OSC400 Check
Pin #8 : 13MHz ?
Vpp : 950mV?
OSC400 Check
Pin #4 = 2.8V ?
NO
YES
NO
NO NO
R412,C426
resolder OSC400
Change or resolder
YES YES YES
NO
U100,C106,C112
Check or resolder
U401 Pin
#4,5,6,7 = 1.7V?
YES
Change U400
Check U300
NO
YES

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SGH-E710 Flow Chart of Troubleshooting and Circuit Diagrams
2-14
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L409
22PF
1.5nH
L408
C414
2.2PF
VRF
L400
5.6nH
C430
L406
27nH
L410
NC
XEN
26
XIN
8
XOUT
27
10
_PDN
_SEN
12
47PF
SDI
14
SDO
11
TXIN5
TXIP4
TXQN7
6
TXQP
9
VDD
32
VDD
17
RFIPP
16
RFOD
22
RFOG
23
RXIN3
2
RXIP
1
RXQN
28
RXQP
SCLK
13
GND36
37
NC
NC38
RFIDN
19
RFIDP
18
RFIGN
21
20RFIGP
RFIPN
24
DIAG2
25
GND
15
GND
2930
GND
31
GND
GND
33
GND
34
35
GND
U401
DIAG1
VPAC
1.8PF
C405
C404
10NF
VRF
22NF
C419
R401
820
220
R404
3
G1
4
G2
CN400
100K
R406
0.5PF
C431
NC
C429
C417
G
6
G
8
G
12
PCSRX
3
2VC1
VC2
4
10VC3
0.75PF
F400
9
ANT
1
DCSRX
DCS/PCSTX
5
11
EGSMRX
EGSMTX
7
6
VRAMP
VREG
5
1PF
C413
7
9
11
PCSOUT
3TXEN
4VBATT
10
VCC
VCC2
812
VCC2
RF3140
U400
2BAND
DCSIN1
13
GND
C416
100PF
C418
1UF
R405
2
G
5
G
IN
1
3
OUT
OUT4
270
2
GG
5
IN
1
3
OUT
OUT4
F402
15
R403
F403
R402
820
10
R400
G
25
G
1
IN
3
OUT
OUT4
100NF
F401
0.5PF
C410
C428
L401
2.7nH
5.6nH
L402
C406
1.8PF
270PF
1.0nH
C400
C409
L403
0
VBAT
0.75PF
C408
ANT
C403
100UF
6.3V
ANT1
C401
1PF
C415
0.75PF
33PF
C411
47PF
C402
C412
1NF2.2PF
L405
6.8nH
NC
C407
L404
PCS_LNA_IN_P
DCS_TX_EN
GSM_TX_EN
DCS_LNA_IN_N
DCS_LNA_IN_P
PCS_LNA_IN_P
PCS_LNA_IN_N
DCS_LNA_IN_P
DCS_LNA_IN_N
GSM_LNA_IN_N
GSM_LNA_IN_P
PCS_RX_EN
PCS_LNA_IN_N
SERDAT
SI_EN
SERLE
RXIN
RXQP
RXQN
CLK13M_RF
TXIN
TXIP
TXQN
TXQP
GSM_LNA_IN_N
GSM_LNA_IN_P
GSM_PAM_IN
DPCS_PAM_IN
SERCLK
TXPOWER
TX_BAND_SEL
GSM_PAM_IN
DPCS_PAM_IN
TX_EN
RXIP

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3. SGH-E710 Exploded View and its Parts list
3-1
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1. Cellular phone Exploded View
1
2
3
4
5
6
7
8
9
11
12
13
14
18 19
21 22
23
10
16
15
20
17

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SGH- E710 Exploded view and its Part list
3-2
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2. Cellular phone Parts list
Location
NO. Description SEC.CODE Remark
1FOLDER UPPER ASS'Y GH75-03786D
2LCD GH07-00406A
3SPEAKER 3001-001446
4MOTOR 3101-001370
5CAMERA GH59-00959A
6FOLDER LOWER GH75-03263A
7WINDOW LCD GH75-03785A
8SCREW 6001-001478
9FOLDER LOWER SCREW CAP LEFT GH73-02160A
FOLDER LOWER SCREW CAP RIGHT GH73-02161A
10 IF COVER GH72-08382A
11 CAMERA KEY GH75-03586A
12 FRONT COVER GH75-03261F
13 VOLUME KEY GH75-03256A
14 KEYPAD GH75-03688D
15 MAIN PBA GH92-01592A
16 DOME SHEET GH59-00895A
17 MIC GH30-00032A
18 SCREW 6001-001478
19 INTENNA GH42-00317A
20 REAR COVER GH75-03264A
21 REAR SCREW COVER GH73-02152A
22 RF COVER GH73-02524A
23 BATTERY GH43-01026B

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SGH-E710 Exploded view and its Part list
3-3
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3. Test Jig (GH80-00865A)
3-1. RF Test Cable
(GH39-00182A)
3-2. Test Cable
(GH39-00127A)
3-3. Serial Cable
3-4. Power Supply Cable 3-5. DATA CABLE
(GH39-00159A)
3-6. TA
(GH44-00482A)