Samsung SGH-F860V User manual

Mobilchips
GSM TELEPHONE
SGH-E860V
GSM 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
Schematics & manuals on www.mobilchips.com ___Mobilchips__

Mobilchips
1. SGH-E860V Specification
1-1
1-1. GSM General Specification
GSM900
Phase 1
EGSM 900
Phase 2
DCS1800
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/Frame
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~13dBm 33dBm~5dBm 30dBm~0dBm 30dBm~0dBm
Power Class 5pcl ~ 15pcl 5pcl ~ 19pcl 0pcl ~ 15pcl 0pcl ~ 15pcl
Sensitivity -102dBm -102dBm -100dBm -100dBm
TDMA Mux 8 8 8 8
Cell Radius 35Km 35Km 2Km -

Mobilchips
SGH-E860V Speclflcation
1-2
1-2. GSM Tx Power Class
TX Power
control level GSM900
5 33±2 dBm
6 31±2 dBm
7 29±2 dBm
8 27±2 dBm
9 25±2 dBm
10 23±2 dBm
11 21±2 dBm
12 19±2 dBm
13 17±2 dBm
14 15±2 dBm
15 13±2 dBm
16 11±3 dBm
17 9±3dBm
18 7±3 dBm
19 5±3 dBm
TX Power
control level DCS1800
0 30±3 dBm
1 28±3 dBm
2 26±3 dBm
3 24±3 dBm
4 22±3 dBm
5 20±3 dBm
6 18±3 dBm
7 16±3 dBm
8 14±3 dBm
9 12±4 dBm
10 10±4 dBm
11 8±4dBm
12 6±4 dBm
13 4±4 dBm
14 2±5 dBm
15 0±5 dBm
TX Power
control level PCS1900
0 30±3 dBm
1 28±3 dBm
2 26±3 dBm
3 24±3 dBm
4 22±3 dBm
5 20±3 dBm
6 18±3 dBm
7 16±3 dBm
8 14±3 dBm
9 12±4 dBm
10 10±4 dBm
11 8±4dBm
12 6±4 dBm
13 4±4 dBm
14 2±5 dBm
15 0±5 dBm

Mobilchips
2. SGH-E860V Flow Chart of Troubleshooting
2-29
2-1 BASEBAND
2-1-1. Power ON
check the current
consumption
>= 100mA
Download again
'Power ON' does not work
No
Yes
Yes
END
Yes
Check the Initial Operation
Check U401 , C421
Yes
Yes
C419,C420
>= 2.8V
No C421=1.8V ?
No
Yes
Charge the battery
No
Check the Voltage
of the Battery
>= 3.3V
check keypad
No
Check the pin C417
of U401 is
>=1.8V
Check
"Power On"
key?
No
check U401 and C417
Yes
Checktheclocksignalat
pin #4 of OSC100
Freq=13Mhz,
Vrms >=300mV
No
Check the clock generation
circuit OSC100
Yes

Mobilchips
SGH-E860V Flow Chart of Troubleshooting
2-2
C136
R114
R111 OSC100
2GND 3
OUT
VCC 4
1
VCON
C141
VRF_2.9
C133
10
R110
C135
R113
C134
C131
C140
R112
SI_13M
CLK13M_TR
CLK13M_MC
AFC
CLK13M_RF
CLK13M_YMU
Vbat
C427
C416 C421
R402
C417
Vrf_2.9
Vccd_1.8_psc
C400
Vccd_2.8
Vccd_2.8
R407
Vccb_2.8
M400
21
C403
Vccd_1.8
C419
C438
Vccd_1.5_psc
C401
C422
Agnd
C420
R410
R408
Vbat
C428
C415
C402
5
G
1
S
S
V
4
K
2
S
S
V
2
R
3
S
S
V
6
P
4
S
S
V
3
1
RM
C
V
X
V
1
DQ
A
N
E
O
X
Th400
J12
Vldo_2
A13
Vldo_3
B12
Vldo_4
B10
Vldo_5
A14
Vldo_6
C12
Vldo_7
A10
Vref
4
1
RN
G
E
R
V
3
1
MP
G
E
R
V
H11
Vrtc
K12
Vsim
1
O
I
_
D
D
V
4
J
2
O
I
_
D
D
V
4
C
L
T
C
O
_
D
D
V
E14
Vext
F15
Vib_drv
9
LN
E
_
G
N
R
_
B
I
V
A12
Vl4s_a
B11
Vl4s_b
D10
Vl5s_a
Vl5s_b C9
G11
Vldo_1
3
J
1
D
D
V
J13
Vdd12
3
M
2
D
D
V
6
N
3
D
D
V
C11
Vdd34
0
1
C
5
D
D
V
3
1
B
7
6
D
D
V
6
A
B
D
D
V
1
1
N
D
D
D
V
1
1
L
V
D
D
V
5
N
B1
A2 Serle2
K14
Sim_clk
J11
Sim_io K11
Sim_rst
7
E
P
X
T
N9
Up_clk
P10
Up_io
R10
Up_rst
F14
Vacc
E13
Vbat
L2 Rwn
6
DN
I
X
T
X
R
7
DP
I
X
T
X
R
6
CN
Q
X
T
X
R
7
CP
Q
X
T
X
R
L8
Sclk_psc
Sdi_psc M7
N7
Sdo_psc
C2 Serck
Serda
C1
Serle1
7
LF
U
B
_
1
W
S
P
9
MP
E
E
K
_
R
W
P
5
1
CN
1
W
S
_
R
W
P
4
1
C2
W
S
_
R
W
P
6
B1
F
E
R
A
R
5
B2
F
E
R
A
R
Resetn_csp
R3
9
KO
_
T
E
S
E
R
F13
Ring_drv
H10
Rtc_almn
4
NK
L
C
_
C
T
R
0
1
NE
D
O
M
5
C
N1
2
6
C
N
E6 Octl0
Octl1
C5
F5 Octl2
Octl3
E5
A4 Octl4
Octl5
G6
B3 Octl6
Octl7
A3
1
C
S
P
_
D
N
G
5
1
K
2
C
S
P
_
D
N
G
0
1
LQ
R
T
N
I
I|o
L3
G13
Led1_drv
G12
Led2_drv
6
RC
M
4
1
MN
N
I
C
I
M
4
1
N
P
N
I
C
I
M
5
1
PN
T
U
O
C
I
M
5
1
N
P
T
U
O
C
I
M9
F
3
S
D
N
G
0
1
F
4
S
D
N
G
7
G
5
S
D
N
G
8
G
6
S
D
N
G
9
G
7
S
D
N
G
0
1
G
8
S
D
N
G
6
H
9
S
D
N
G
3
1
P
V
D
N
G
1
1
F
R
U
C
H
_
D
N
G
4
B
L
T
C
O
_
D
N
G
5
1
B
Q
D
N
G
7
F
1
S
D
N
G
7
H
0
1
S
D
N
G
8
H
1
1
S
D
N
G
2
1
S
D
N
G9
H
7
J
3
1
S
D
N
G
8
J
4
1
S
D
N
G
9
J
5
1
S
D
N
G
0
1
J
6
1
S
D
N
G
0
1
K
7
1
S
D
N
G
8
F
2
S
D
N
G
Db2
Db3
J5
J6 Db4
H5 Db5
G3 Db6
G4 Db7
F4 Db8
F1 Db9
3
PR
T
N
I
D
6
F
B
D
N
G
0
1
M
D
D
N
G
8
E
6
MO
D
I
A
D
4
PN
R
I
A
D
K1 Db0
Db1
K2
F2 Db10
F3 Db11
E2 Db12
E3 Db13
D3 Db14
D2 Db15
K3
5
1
MP
N
I
X
U
A
3
1
LN
T
U
O
X
U
A
3
1
KP
T
U
O
X
U
A
3
1
D
3
C
D
A
_
X
U
A
E11
Ch_bdrv F12
Ch_isen D14
Ch_res
Cref E9
Csn_psc K8
4
RK
C
I
A
D
6
LI
D
I
A
D
K7
K5 Ab8
E10
Adc_aux1
D15
Adc_aux2
5
P4
X
U
A
_
C
D
A
9
DC
F
A
2
1
NN
A
T
U
O
A
1
1
PP
A
T
U
O
A
2
1
PN
B
T
U
O
A
2
1
RP
B
T
U
O
A
4
1
LN
N
I
X
U
A
K6 Ab0
Ab1
P1
L5 Ab2
Ab3
N1
N2 Ab4
Ab5
M2
M1 Ab6
Ab7
U401
Vccb_2.8
Vcca_2.8
Vrtc_1.5
C408
R409
C426
R426
C418
Vrf_2.9
1
3
4
C
Vcca_2.8
Vbat
Vccb_2.8
0
3
4
C
Vsim
Q
A
N
E
O
X
Intrq
Rtcalarm
K
2
3
K
L
C
N
I
X
T
R
P
I
X
T
R
N
Q
X
T
R
P
Q
X
T
R
Up_sclk
Up_sdi
Up_sdo
Sim_clk
Sim_io
Sim_rst
C
P
A
V
Simclk
Simdata
Simrst
Gsm_tx_en
Dcs_tx_en
P
A
T
U
O
A
N
B
T
U
O
A
P
B
T
U
O
A
N
N
I
X
U
A
P
N
I
X
U
A
N
T
U
O
X
U
A
P
T
U
O
X
U
A
Ear_check
Ichrg
Up_cs
T
N
I
_
P
S
D
Key_bl1
C
M
_
M
3
1
K
L
C
N
N
I
C
I
M
P
N
I
C
I
M
N
T
U
O
C
I
M
P
T
U
O
C
I
M
F
U
B
_
1
W
S
P
Pwr_keep
N
O
_
R
W
P
N
O
_
G
I
J
Rst
Flash_reset
C
F
A
N
A
T
U
O
A
Bp_vf
Dsp_db(8)
Dsp_ab(0)
Serle
Serdat
Serclk
Pac_en
Rf_en
Dsp_io
Dsp_rwn
Tx_band_sel
Dsp_db(15)
Dsp_db(0:15)
Dsp_db(14)
Dsp_db(13)
Dsp_db(12)
Dsp_db(11)
Dsp_db(10)
Dsp_db(9)
Dsp_db(7)
Dsp_db(6)
Dsp_db(5)
Dsp_db(4)
Dsp_db(3)
Dsp_db(2)
Dsp_db(1)
Dsp_db(0)
Dsp_ab(0:8)
Dsp_ab(8)
Dsp_ab(7)
Dsp_ab(6)
Dsp_ab(5)
Dsp_ab(4)
Dsp_ab(3)
Dsp_ab(2)
Dsp_ab(1)

Mobilchips
SGH-E860V Flow Chart of Troubleshooting
2-3
2-1-2. Initial
The voltage at the C417=1.8V?
The voltage at the C420=2.8V?
ThevoltageattheV509
"Low -->High"?
There is 32.768KHz wave
form at the C214, C215?
The voltage on R210 is
"Low-->High"?
The voltage is 2.8V
at the C416,C419,C420?
LCD Display OK ?
Sound operation OK?
END
Yes
Initial Failure
Check the U401
(If it has some problem,
it has to be replaced
Check the U401
(If it has some problem,
it has to be replaced )
No
Yes
Yes
No
No
Check the U200
Yes
Yes
No
Check the U200
No
Check the LCD part
Yes
Yes
Check the Audio part
Check the U401
No
No

Mobilchips
SGH-E860V Flow Chart of Troubleshooting
2-4
12
2
34
5

Mobilchips
SGH-E860V Flow Chart of Troubleshooting
2-5
C203
R211
C214
VCCD_1.8
C207
C
T
R
1
X
C
T
R
2
X
9
1
F
2
1
M
2
S
S
V8
1
A
8
G
3
S
S
V
9
G
4
S
S
V
8
H
5
S
S
V
6
S
S
V9
H
7
S
S
V0
1
H
8
S
S
V1
1
H
2
1
H
9
S
S
V
D
_
A
S
S
V1
1
R
8
1
F
U
_
A
S
S
V
9
1
H
C
T
R
V8
1
G
2
A
1
S
S
V
0
1
S
S
V2
1
J
8
K
1
1
S
S
V
2
1
S
S
V7
L
8
L
3
1
S
S
V
4
1
S
S
V8
M
5
1
S
S
V9
M
0
1
M
6
1
S
S
V
1
1
M
7
1
S
S
V
8
1
S
S
V
2
1
U
8
W
7
1
_
8
P
1
_
O
I
_
D
D
V
8
1
_
8
P
1
_
O
I
_
D
D
V8
1
W
6
B
2
_
8
P
1
_
O
I
_
D
D
V
2
1
B
3
_
8
P
1
_
O
I
_
D
D
V
4
_
8
P
1
_
O
I
_
D
D
V6
1
B
1
C
5
_
8
P
1
_
O
I
_
D
D
V
4
1
C
6
_
8
P
1
_
O
I
_
D
D
V
7
_
8
P
1
_
O
I
_
D
D
V9
D
8
_
8
P
1
_
O
I
_
D
D
V8
1
D
1
F
9
_
8
P
1
_
O
I
_
D
D
V
5
E
R
O
C
_
D
D
V
6
E
R
O
C
_
D
D
V8
1
N
7
V
7
E
R
O
C
_
D
D
V
3
1
V
8
E
R
O
C
_
D
D
V
4
B
1
_
8
P
1
_
O
I
_
D
D
V
0
1
_
8
P
1
_
O
I
_
D
D
V4
L
1
1
_
8
P
1
_
O
I
_
D
D
V6
1
L
2
1
_
8
P
1
_
O
I
_
D
D
V1
P
8
1
T
3
1
_
8
P
1
_
O
I
_
D
D
V
1
U
4
1
_
8
P
1
_
O
I
_
D
D
V
5
U
5
1
_
8
P
1
_
O
I
_
D
D
V
6
1
_
8
P
1
_
O
I
_
D
D
V
4
1
W
S
M
T
N
T
S
R
T2
1
R
3
M0
X
T
1
X
T
7
K
D
_
A
D
D
V1
1
T
U
_
A
D
D
V7
1
F
8
B
1
E
R
O
C
_
D
D
V
3
1
B
2
E
R
O
C
_
D
D
V
3
E
R
O
C
_
D
D
V2
G
4
E
R
O
C
_
D
D
V8
1
H
2
M
SPFS1_PIO15 N15
4
R0
D
X
R
P
S
M17
SPRXD1_PIO17
D
S
2
I
_
0
D
X
T
P
S
2
U
SPTXD1_I2SD_PIO16 N16
U14
TCK
V14
TDI
TDO T12
U15
TEST1
TEST2 T14
V16
TEST3
1
0
O
I
P
_
O
I
R
N
M
R
A
L
A
C
T
R
7
1
H
4
0
O
I
P
_
0
S
T
R
2
N
V6
RWN
8
2
Q
R
I
_
0
X
R
1
M
8
2
Q
R
I
_
1
X
R
6
L
4
PK
L
C
M
I
S
O
I
M
I
S
2
T
0
K
L
C
P
S
3
R
SPCLK1_PIO18 M18
0
S
F
P
S
3
T
A
T
A
D
_
B
S
U
_
7
3
O
I
P
7
1
E
K
L
C
_
I
C
M
_
8
3
O
I
P
5
1
J
N
E
_
D
M
C
_
I
C
M
_
9
3
O
I
P
4
1
L
4
1
M
N
E
_
T
A
D
_
I
C
M
_
0
4
O
I
P
X
T
A
D
R
I
_
1
4
O
I
P
6
1
R
7
1
RX
R
A
D
R
I
_
2
4
O
I
P
N
E
_
0
T
A
D
_
I
C
M
_
3
4
O
I
P
4
1
N
PIO47 J16
6
4
O
I
P
_
1
M
W
P
5
G
5
1
G
N
T
S
E
R
3
P
5
2
O
I
P
6
1
U6
2
O
I
P
9
1
U
7
2
O
I
P
7
1
W8
2
O
I
P
PIO30_WAITN
E14
PIO31_IRQ6 P12
3
1
R2
3
O
I
P
PIO33 U18
R14
PIO34
F2 PIO35_A_A25_BOOTSEL
6
1
FN
E
O
_
B
S
U
_
6
3
O
I
P
7
1
V
I
M
V
_
B
S
U
_
1
1
O
I
P
8
1
C
O
P
V
_
B
S
U
_
2
1
O
I
P
7
1
D
O
M
V
_
B
S
U
_
3
1
O
I
P
6
1
E
T
S
R
M
I
S
_
4
1
O
I
P
5
P
P
E
E
K
R
W
P
_
9
1
O
I
P
5
1
P
9
1
P
Q
E
R
K
L
C
S
Y
S
_
0
2
O
I
P
0
T
A
D
_
I
C
M
_
1
2
O
I
P
3
1
K
2
1
L
1
T
A
D
_
I
C
M
_
2
2
O
I
P
2
T
A
D
_
I
C
M
_
3
2
O
I
P
3
1
L
3
T
A
D
_
I
C
M
_
4
2
O
I
P
5
1
L
9
1
V
1
H7
D
R
B
Y
E
K
8
D
R
B
Y
E
K
3
H
6
G
9
D
R
B
Y
E
K
1
C
N1
2
2
C
N
T
U
O
2
3
C
S
O
6
1
G
P16
PIO00_IRQ5
9
1
BP
S
U
S
_
B
S
U
_
7
0
O
I
P
3
1
J
D
M
C
_
I
C
M
_
8
0
O
I
P
I
P
V
_
B
S
U
_
9
0
O
I
P
9
1
C
0
1
O
I
P
IRQ3
IRQ4 P18
0
D
R
B
Y
E
K
7
J
6
J1
D
R
B
Y
E
K
4
G
0
1
D
R
B
Y
E
K1
1
D
R
B
Y
E
K
2
H
5
J
2
D
R
B
Y
E
K
4
J3
D
R
B
Y
E
K
4
D
R
B
Y
E
K
8
J
F
U
B
_
1
W
S
P
_
5
D
R
B
Y
E
K
6
H
6
D
R
B
Y
E
K
4
H
U8
T8
D_D7
D_D8 T9
R9
D_D9
H14 FLASHRSTN
INT0 T15
W6
IO
IOBIT0_PIO05 V12
IOBIT1_PIO06 N11
M16
IRQ1
IRQ2 M19
P17
D_D10 P8
P9
D_D11
D_D12 N8
N9
D_D13
N10
D_D14
P11
D_D15
D_D2 R7
T7
D_D3
D_D4 R8
D_D5 V8
D_D6
V1
W2
D_A1
D_A2 W3
V3
D_A3
U4
D_A4
T5
D_A5
D_A6 V4
N6
D_A7
D_A8 R6
U6
D_D0
T6
D_D1
A_D8
E12 A_D9
B14 A_OEN
A_WEN
D14
I
K
C2
1
W
CKO_IACK N12
CPTSTSTOP_CKO T17
6
M9
2
O
I
P
_
0
S
T
C
4
4
O
I
P
_
0
D
C
D
5
N
2
0
O
I
P
_
0
R
S
D
2
P
4
N3
0
O
I
P
_
0
R
T
D
D_A0A_D12
F12
D12 A_D13
A_D14
E13
A_D15
D13
F9 A_D2
A_D3
G10
A_D4
G11
F11 A_D5
A_D6
E11
G12 A_D7
D11
C15
A_CS2N
G14
J14 A_CS3N
D15 A_CS4N
A_CS5N
C16
F15 A_CS6N
B17 A_CS7N
A_D0
A8
E9 A_D1
A_D10
C12
A12 A_D11
A_A24
A6 A_A3
A_A4
C6
C5 A_A5
A_A6
D7
E7 A_A7
A_A8
C4
C2 A_A9
A_BE0N
H16
A17 A_BE1N
A_CS0N
A14
A_CS1N
D3 A_A15
A_A16
E8
F8 A_A17
E6 A_A18
A_A19
D2
D8 A_A2
A_A20
E4
A_A21
E3
A_A22
F5
F4 A_A23
F3
ATCK_CTS1
L5
ATDI_RTS1
ATDO_PWM2 T13
ATMS_PIO45 K12
B7 A_A0
C8 A_A1
A_A10
A3
A_A11
B3
A_A12
B1
D6 A_A13
A_A14
D5
U200
M4
VCCD_1.6
C200 C206C205
C215
C202 C208 C204
R210
2
1
OSC200
VRTC_1.5
R212
C201
TV_EN
SVC_WHITE
CHG_DET
RST
DSP_TCK
DSP_TDI
DSP_TDO
DSP_TMS
CHG_ON
SPK_PHONE_EN
DEBUG_RXD
DEBUG_RTS
DEBUG_CTS
DEBUG_TXD
IRDA_TX
VDD_AC_ON
IRDA_RX
LED_DATA
VCAM_EN
IRDA_EN
BACKLIGHT_EN
LCDC_INT
JACK_INT
USB_VPI
USB_SUSP
PSW1_BUF
KEY_ROW(0)
KEY_ROW(1)
KEY_ROW(2)
KEY_ROW(3)
KEY_ROW(4)
KEY_ROW(0:4)
KEY_COL(0)
KEY_COL(1)
KEY_COL(2)
KEY_COL(3)
KEY_COL(4)
KEY_COL(0:4)
UP_SDI
P_MODE
PCM_IN
PCM_CLK
M_HOLD
A(0)
PCM_OUT
NAND_INT
ONENAND_CS
UP_SDO
UP_CS
SDS_TXD
UP_SCLK
SDS_RXD
USB_DATA
USB_OEN
USB_VMO
USB_VPO
USB_VMI
YMU_IRQ
INTRQ
USB_CON
AMP_SHDN
DSP_INT
DSP_IO
DSP_RWN
LOWER_BYTE
YMU_CS
LCDC_CS
RAM1_CS
VBT_EN
EAR_OUT_SEL
FLASH_EN
AUDIO_OUT_SEL
PCM_SYNC
DSP_DB(3)
DSP_DB(2)
DSP_DB(1)
DSP_DB(0)
DSP_AB(0:8)
DSP_AB(8)
DSP_AB(7)
DSP_AB(6)
DSP_AB(5)
DSP_AB(4)
DSP_AB(3)
DSP_AB(2)
DSP_AB(1)
DSP_AB(0)
CP_TDI
CP_TCK
CP_TMS
HALL_SENSOR
D(5)
D(4)
D(3)
D(2)
D(1)
D(0)
DSP_DB(15)
DSP_DB(0:15)
DSP_DB(14)
DSP_DB(13)
DSP_DB(12)
DSP_DB(11)
DSP_DB(10)
DSP_DB(9)
DSP_DB(8)
DSP_DB(7)
DSP_DB(6)
DSP_DB(5)
DSP_DB(4)
A(18)
A(17)
A(16)
A(15)
A(14)
A(13)
A(12)
A(11)
A(10)
A(9)
A(8)
A(7)
A(6)
A(5)
A(4)
A(3)
A(2)
A(1)
CP_OEN
FLASH_RESET
ROM1_CS
UPPER_BYTE
D(0:15)
D(14)
D(13)
D(12)
D(11)
D(10)
D(9)
D(8)
D(7)
D(6)
CP_TDO
D(15)
CP_WEN
CLK13M_TR
CLK32K
SIMRST
PWR_KEEP
XOENAQ
EAR_SWITCH
MIC_SEL
RTCALARM
SIMCLK
SIMDATA
A(1:24)
A(24)
A(23)
A(22)
A(21)
A(20)
A(19)

Mobilchips
SGH-E860V Flow Chart of Troubleshooting
2-6
2-1-3. Sim Part
"Insert SIM" is displayed on the LCD
Is there any signal
pin #2,3,4 of CN400?
Check the U401
Check the U401 & U200
END
No
Yes
No
Yes
Check the SIM Card
The voltage is 2.8V
at the pin#1 of CN400
C405 C406C404 C409
9
GG
10
11
22
33 4 4
55
6
6
7
GG
8
Cn400
C407
Sim_rst
Vsim
Sim_clk Sim_io

Mobilchips
SGH-E860V Flow Chart of Troubleshooting
2-7
2-1-4.Microphone Part
* Call with Sim before testing.
Check the soldered
status of microphone
MicroPhone does not work
Resolder microphone
END
No
Yes
Yes
Check the reference
voltage on mic path
C360 ≒2.0V
Yes
Resolder or change
C360, C361, R349, R328, R329
No
Is microphone OK?
Yes
Check U401
No
2