Page 1
10. Flow Chart of Troubleshooting
BASEBAND
10-1
10-1-1.
Power ON
Power On' does not work
'
Yes
Check the current
consumption more
than
Check the VBAT
more than
VLDO7_1.8V
of
U
100
Yes
Yes
Check the
CP
is more
300
than
1.8V
Yes
mA
3.3V
No
No
No
Download again
Charge the Battery
①
CheckUCP
300
and C31
4
Check U201
pin
1 = 1.8V
pin
4 = 1.6V
pin
7,9 = 1.5V
Yes
Check VRF of
CP
U
300=2.9V
Yes
Check
C130
Freq
Vp-p
Check the initial operation
=13
>0.8V
Yes
Yes
END
MHz
No
No
No
②
Check
③
CheckUCP
and C31
④
Check the clock C1
U201
300
5
30
10-1
Page 2
Flow Chart of Troubleshooting
10-2
Page 3
Flow Chart of Troubleshooting
1
1
3
C
V
5
.
1
_
C
T
R
V
A
T
T
K
L
A
S
C
D
R
_
_
_
2
2
7
0
3
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T
A
B
V
1
V
9
.
2
_
D
C
C
V
V
8
.
1
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D
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C
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V
9
.
2
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A
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C
V
V
9
.
2
_
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V
3
0
3
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2
0
3
C
4
0
3
C
1
0
3
C
0
1
3
8
1
5
1
5
1
1
3
3
6
5
4
5
4
2
6
1
1
1
0
6
6
1
1
1
3
4
4
1
3
7
8
9
1
0
7
8
9
1
0
6
7
8
9
7
8
9
1
0
1
0
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C
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H
C
_
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A
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)
5
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0
(
D
2
M
M
M
I
I
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0
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9
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1
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5
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N
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4
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B
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A
1
2
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P
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2
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A
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2
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P
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1
P
N
Q
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T
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6
C
P
Q
X
T
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7
C
NI
X
T
X
R
6
D
PI
X
T
X
R
7
D
1
F
E
R
A
R
6
B
2
F
E
R
A
R
5
B
P
X
T
7
E
C
F
A
9
D
K
C
R
E
S
2
C
T
K
D
C
B
B
S
S
P
E
E
K
Q
_
R
R
T
T
S
W
IN
P
R
T
A
B
V
F
W
S
U
P
1
_
B
N
W
_
P
O
R
N
J
I
_
O
G
T
NI
_
P
S
D
_
M
1
3
M
C
K
L
C
Q
A
N
E
O
X
3
2
K
K
L
C
_
N
T
U
_
O
X
U
A
_
P
T
U
_
O
X
U
A
3
_
I
X
_
N
U
N
A
2
3
_
I
X
_
P
U
N
A
C
_
N
T
U
I
_
O
M
C
_
P
T
U
I
_
O
M
C
_
N
NI
I
_
M
C
I
_
I
M
C
_
P
N
_
N
_
B
T
U
O
A
_
P
_
B
T
U
O
A
_
N
_
A
T
U
O
A
_
P
_
A
T
U
O
A
_
N
_
Q
X
T
R
_
P
_
Q
X
T
R
_
I
X
T
R
_
N
_
I
X
T
R
_
P
C
P
A
V
C
2
F
A
2
3
C
10-3
Page 4
Flow Chart of Troubleshooting
VBAT
C210C214
1
ADJ2
2
MODE|DATA
3
VIN
4
FB1
5
DEF_1
U201
2
D
N
G
11
HP_CORE_1.6V VCCD_1.8V
L201
L200
C211
C212
SW2
EN2
GND
EN1
SW1
10
9
8
7
6
D200
VLDO1_1.5V
C213
10-4
Page 5
Flow Chart of Troubleshooting
10-2-2.
Initial
Initial Failure
Yes
Check VCC D,
VCCD_1.8V of UCP300
"High" when the phone
is b oot on`
Yes
the HP_CORE_1.6V of
Check
U201 is "High"
Yes
LCD display is O.K?
Yes
No
No
No
①
Check UCP 300
②
Chec k U201
③
Chec k HDC601 and LCD part
Sound is O.K?
Yes
END
No
Chec k audio part
10-5
Page 6
Flow Chart of Troubleshooting
SCL_TOUCH
LCD_WEN_O
LCD_DO(2)
MLCD_BL_EN
CAM_RST
AOUT_A_N
AOUT_A_P
C615
VCAM_2.8V
VCCD_2.9V
VCCD_2.9V
VBAT
HDC601
1
2
2
1
3
4
3
4
6
5
6
5
8
7
8
7
9
10
9
10
11
12
11 12
14
131314
15
16
15 16
18
17
17 18
19
20
19
20
21
22
21 22
23
24
23 24
25 26
26
25
28
272728
29
30
29
30
32
31
31 32
33
34
33 34
36
353536
37
38
37 38
39
40
39
40
41 42
41
42
43 44
43
44
45 46
45
46
47 48
47
48
49
50
49
50
51 52
51
52
53 54
53
54
56
R616
R620
C609
5
6
1
6
R
V
7
1
1
6
6
R
R
V
V
C610
555556
57 58
57
58
59
C
C
59
60
N
N
2
1
6
6
60
2
R621
8
2
1
6
6
R
R
V
V
R622
0
2
6
R
V
Q600
1G
2S
R615
C607
C614
1
2
6
R
V
3D
C608
TOUCH_IRQTOUCH_EN
SDA_TOUCH
SLCD_CS_O
MLCD_CS_OLCD_ADS_O
LCD_DO(1)LCD_DO(0)
LCD_DO(3)
LCD_DO(5)LCD_DO(4)
LCD_DO(7)LCD_DO(6)
LCD_DO(9)LCD_DO(8)
LCD_DO(11)LCD_DO(10)
LCD_DO(13)LCD_DO(12)
LCD_DO(15)LCD_DO(14)
LCD_FLM
SLCD_BL_EN
CAM_DO(1)CAM_DO(0)
CAM_DO(3)CAM_DO(2)
CAM_DO(5)CAM_DO(4)
CAM_DO(7)CAM_DO(6)
M_CLKCAM_VSYNC
P_CLKCAM_HSYNC
C_SDAC_SCL
VCAM_EN
FLASH_EN
LCD_CHECK
10-6
Page 7
Flow Chart of Troubleshooting
10-1-3.
Sim Part
Phone can't access
SIM card
Check the pin 1 of
SIM600
Volt ag e = 3V
YES
Check the SIM
connec tor' s
(S IM60 0)
connec tor' s to SIM
card
YES
Check the circuit around SIM301
input circuitry
YES
Check the circuit aroun d
UCP30 0 output
and voltage supply circuitry
YES
NO
NO
NO
NO
①
Check the circ uit related to
UCP300
②
resolder or change
SIM600
③
Check t he rela ted c irc uit of
SIM600
④
Check t he rela ted c irc uit of
UCP300
END
10-7
Page 8
Flow Chart of Troubleshooting
SIM600
6
VSIM
SIM1_RST
SIM1_CLK SIM_IO
C603 C604
C605
11
33 4
C606
22
G
6
5
5
4
G78GG
910
C602
10-8
Page 9
Flow Chart of Troubleshooting
10-1-4.
Charging Part
Abn ormal ch argin g part
Battery Contact at
Charger input of
Yes
BTC300?
Yes
IFC500 ?
Yes
END
No
No
①
Batt ery Check BTC300
②
Chec k the IFC 500
10-9
Page 10
Flow Chart of Troubleshooting
EAR_MIC_P
EAR_MIC_N
EAR_R
EAR_L
EAR_SW
JACK_IN
EAR_CHECK
T_OPT
SDS_RXD
JIG_ON_IF
USB_D+
USB_D-
VUSB_5.0V
TA_VEXT
TA501
VCCD_1.8V
R524
ZD500
1
CH5
CH4
CH3
CH1
2
VN
3
CH2
6
5
4
R525
1
CH1
2
VN
3
CH2
ZD502
CH5
CH4
CH3
C520
6
5
4
C517 C519C518
JIG_ON_IF_B
SDS_RXD_B
R_ANT
R536
R537
R527
R528
R529
R530
1
0
5
D
Z
R531
ZD504
ZD503
TA502
VBAT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
IFC500
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
NC
NC
NC
NC
NC5
NC6
CF
VBAT
C343 TA300
C344
1
1
2
2
3
3
4
NC
5
NC
6
NC
7
NC
BTC300
10-10
Page 11
Flow Chart of Troubleshooting
10-1-5.
Microphone Part
M i crop hon e does not w ork
Check the
assembled status of
microphone.
Check th e referenc e
volta ge on mic path
R409=2.9V
Is microphone ok?
YES
YES
YES
NO
NO
NO
Rea sse m bl age microphone
resolder or change
(R409,
TA403,C431,R411)
Check UCP300
END
10-11
Page 12
Flow Chart of Troubleshooting
MIC_IN_P
MIC_OUT_P
MIC_IN_N
MIC_OUT_N
VCCA_2.9V
R409
TA403
MIC+
MIC-
R414
C406
C408
C431
AOUT_B_P
AOUT_B_N
R411
MSPK+
MSPK-
R464
R466
SPK_P
SPK_N
CSP_MIC_P
CSP_MIC_N
YMU_EAR_R
YMU_EAR_L
RADIO_R
RADIO_L
C448
C444
R415
R416
C478
C449
C452
C479
C424C423
C453
R463
R465
VTI_1.8V
J6
J7
J4
J5
J2
J3
B2
A2
A1
B3
A9
A8
B9
B8
B4
A3
A4
B5
B7
B6
A6
A5
U408
9
C
D
D
V
OI
RIGHT_LOP
RIGHT_LOM
LEFT_LOP
LEFT_LOM
MONO_LOP
MONO_LOM
MICDET
MICBIAS
MIC3R
MIC3L
MFP3
MFP2
MFP1
MFP0
LINE2RP
LINE2RM
LINE2LP
LINE2LM
LINE1RP
LINE1RM
LINE1LP
LINE1LM
S
S
V
D
9
D
1
B
2
E
1
C
1
A
D
D
V
S
S
V
R
D
2
F
C405
C407
1
A
D
D
V
S
S
V
R
D
VAUDIO_3.3V
1
9
1
J
H
H
2
1
D
A
A
D
D
D
V
D
D
D
V
V
HPROUT
A
HPRCOM
HPLOUT
HPLCOM
GPIO2
GPIO1
SELECT
/RESET
WCLK
C
C
C
D
A
A
A
D
D
_
_
_
S
S
S
S
S
S
V
V
V
A
A
A
2
2
2
2
H
D
C
G
DOUT
DIN
SDA
SCL
MCLK
BCLK
C
D
A
_
S
S
V
A
G1
F1
D1
E1
J8
J9
F8
E9
E8
D8
C8
H8
G8
F9
G9
1
NC
2
NC
A7
NC
CSP_MIC_P
CSP_MIC_N
C426C425
TA401
TP400
TA402
EAR_R
EAR_L
CLK13M_TI
TI_SD_IN
TI_SD_OUT
SDA
SCL
TI_RST
TI_MSCK
TI_LRCK
TI_BCK
10-12
Page 13
Flow Chart of Troubleshooting
10-1-6.
Speaker Part
Speaker does not work
Is the ter minal of
Speaker OK?
Check the
pin 1,2 of SPK400
Check the circuit
around U410
YES
YES
"HIG H "
NO ch eck th e spe ck er conne cto r
SPK400
①
NO
Change or resolder
SPK400
②
NO
Change or resolder
around U410
YES
Check the voltage of
R450 is high
YES
Is s peaker OK?
YES
END
NO
③
Check UCP300
Change speakerNO
10-13
Page 14
Flow Chart of Troubleshooting
10-14
Page 15
L404
Flow Chart of Troubleshooting
VBAT
SPK_P
SPK_N
R421
R424
SPK_P_OUT
SPK_N_OUT
C463
C464
C468
C469
V400
AVLC-5S-01-015
AMP_EN
R422
R425
B1
A2
VSS
VDD
U410
A1
VIP
C1
VIM
R450
D
D
N
V
E
P
2
2
1
B
C
R433
V401
AVLC-5S-01-015
VOM A3
B3PVSS
VOP
C3
C
C
N
N
2
TA404
VMOT_3.3V
C480
100nF
6.3V
C465
L405
SPK_N_OUT
L406
R441R440
C466
C467
SPK_P_OUT
SPK400
FH19-4S-0.5SH
1
1
2
2
3
3
4
3
D400
4
5
NC
6
NC
DAN222TL
1
2
10-15
Page 16
Flow Chart of Troubleshooting
10-1-7.
LCD
LCD does not Display
First, Check the connec tion of HD C601 and L CD
Have a some problem of
connec tor( H DC601, CN10 0)
NO
Backlight does work
YES
check the data li ne from
HD C601
YES
NO
NO
①
Repl ace a connec tor (HDC 601,
CN100)
②
Check of U103
(pin 19, 20)
③
Check U505
YES
try with the new LCD module and
change
10-16
Page 17
Flow Chart of Troubleshooting
10-17
Page 18
Flow Chart of Troubleshooting
OSC500
2
3
C_SDA
C_SCL
VCCD_1.8V
SCL
SDA
VCCD_1.8V
C547
1
4
C552
VCAM_2.8V
R552
D1(0:15)
R544
C553
U603
VCORE_1.2V
C548
CAM_D(0:7)
R550
R553
VCORE_1.2V_O VCORE_1.2V_PLL
C549
A1(1)
A1(2)
D1(0)
D1(1)
D1(2)
D1(3)
D1(4)
D1(5)
D1(6)
D1(7)
D1(8)
D1(9)
D1(10)
D1(11)
D1(12)
D1(13)
D1(14)
D1(15)
HERA_CS
A1(18)
CP_OEN
CP_WEN
A1(8)
HERA_INT
M_HOLD
HERA_RST
C554
CAM_HSYNC
CAM_VSYNC
CAM_RST
TI_MSCK
TI_LRCK
TI_SD_OUT
TI_SD_IN
LCD_D(0:15)
MLCD_CS
SLCD_CS
LCD_WEN
P_CLK
M_CLK
TI_BCK
R546
LCD_ADS
CAM_D(0)
CAM_D(1)
CAM_D(2)
CAM_D(3)
CAM_D(4)
CAM_D(5)
CAM_D(6)
CAM_D(7)
C550
LCD_D(0)
LCD_D(1)
LCD_D(2)
LCD_D(3)
LCD_D(4)
LCD_D(5)
LCD_D(6)
LCD_D(7)
LCD_D(8)
LCD_D(9)
LCD_D(10)
LCD_D(11)
LCD_D(12)
LCD_D(13)
LCD_D(14)
LCD_D(15)
VCAM_2.8V VCCD_2.9V
8
F
i
D
D
A14
V
M_SA0
B13
M_SA1
C11
M_SA2
G11
M_SD0
E14
M_SD1
F13
M_SD2
F12
M_SD3
F11
M_SD4
E13
M_SD5
D14
M_SD6
E12
M_SD7
E11
M_SD8
C14
M_SD9
D13
M_SD10
D12
M_SD11
D11
M_SD12
C13
M_SD13
B14
M_SD14
C12
M_SD15
B10
M_CS_N
B11
MS_CS_N
C10
M_RD_N
D9
M_WR_N
A13
M_ADS
B12
M_INTR
A12
M_HOLD
D10
M_RESET_N
H14
XIN
G14
XOUT
D1
C_D0
D2
C_D1
D3
C_D2
D4
C_D3
D5
C_D4
E1
C_D5
E2
C_D6
E3
C_D7
B4
C_HS
C1
C_VS
B3
C_RST
C5
C_PCLK
C2
C_MCLK
C3
C_SDA
C4
C_SCK
F1
GPIOS_D15
N11
D_MSCK
P11
D_BCK
M11
D_LRCK
M10
D_SCK
N10
D_SDA
P12
D_SDATAOUT
L10
D_SDATAIN
M2
L_DA0
M1
L_DA1
L4
L_DA2
L3
L_DA3
L2
L_DA4
L1
L_DA5
K4
L_DA6
K3
L_DA7
K2
L_DA8
K1
L_DA9
J4
L_DA10
J3
L_DA11
J2
L_DA12
J1
L_DA13
H4
L_DA14
H3
L_DA15
H2
L_DA16
H1
L_DA17
G4
L_CS_N
L5
LS_CS_N
M3
L_WR_N
N2
L_RD_N
G3
L_ADS
N1
L_PCLK
M4
GPIOL_D13
R548
R551
C541
C551
VUSB_3.3CV
VCCD_1.8V
VUSB_3.3CV
R545
GOLD_TV_OUT
USB_HERA+
USB_HERA-
TP502
PWR_STRB
TV_EN
VCAM_EN
USB_CHG_ON
USB_EN
TOUCH_EN
LCD_FLM
CHG_OFF
C542
C538
VDD_TV_2.8V
R547
VUSB_5.0V
R554
R555
LCD_CHECK
BUS_EN
VDD_TV_2.8V
C540
C539
0
7
8
7
7
1
J
H
H
G
E
i
c
c
c
D
D
D
D
D
D
D
D
V
V
V
V
0
1
8
5
5
7
8
1
1
J
F
E
G
K
L
K
ll
0
C
D
D
V
c
s
d
d
R
R
a
s
cl
p
D
D
D
D
D
D
D
D
D
D
D
D
D
V
V
V
D
V
V
V
V
U505
C
T
T
3
3
3
v
ll
3
3
t
3
S
A
Q
p
A
Q
A
S
S
S
S
S
S
S
S
V
S
S
S
S
S
S
S
V
V
V
V
V
A
V
V
4
3
2
9
6
4
6
9
1
1
1
J
F
F
G
G
J
J
J
C543
9
3
F
M
v
t
D
D
V
A
S
S
V
6
6
J
H
2
1
2
1
1
1
L
H
H
1
T
T
b
3
3
g
s
3
3
u
D
2
A
A
D
1
D
D
V
D
D
D
D
V
V
V
USB_VBUS
USB_REXT
USB_VBUS_DRV
TESTMODE
PWR_STRB
S
S
S
S
S
S
V
V
V
9
9
F
H
C544
3
1
H
C
3
3
SOUT0
A
D
XRTS0
D
V
XCTS0
N_D0
N_D1
N_D2
N_D3
N_D4
N_D5
N_D6
N_D7
N_RE_N
N_WE_N
N_ALE
N_CLE
N_CS_N
N_RDY
TRST
RTCK
SD_D0
SD_D1
SD_D2
SD_D3
SD_CLK
SD_CMD
SD_WP
T_VRO
T_VREF
T_OUT
USB_DP
USB_DM
USB_ID
STROBE
C_PWDN
G_INT
MASTER0
GPIO1_D0
GPIO1_D1
GPIO1_D2
GPIO1_D3
GPIO1_D4
GPIO1_D5
GPIO1_D6
GPIO1_D7
SIN0
TDI
TMS
TCK
TDO
VUSB_1.2V
C545
C9
D8
B9
A10
A6
B7
C7
A7
A8
B8
A9
C8
M6
M8
N8
P8
P6
N6
A1
A2
A3
A4
B5
D6
N13
N12
M14
M13
P13
N14
M12
G2
G1
F2
L14
K14
K11
K12
K13
L13
B2
J11
B1
A11
G12
F14
M5
L8
P9
N9
L9
P10
N5
P14
A5
NC
B6
NC
C6
NC
D7
NC
E4
NC
G13
NC
L6
NC
L7
NC
M7
NC
N3
NC
N4
NC
N7
NC
P1
NC
P2
NC
P3
NC
P4
NC
P5
NC
P7
NC
1
NC
2
NC
VUSB_3.3TV
C546
C555
10-18
Page 19
Flow Chart of Troubleshooting
10-1-8.
Check the connection of CN102 and CAMERA Module
Camera
Camera does not work
Check camera FPCB
Check the vol tage
pin 4, 5 of U103
(Pin4:2.8V, Pin5:1.8v)
and CN102
YES
NO
NO
Change camera module and
check of CN102
Change U103
YES
Check pinC5, C2 of
U412
MHz,C2
(C5:54
:54
YES
END
MHz
NO
)
Check of U412
10-19
Page 20
Flow Chart of Troubleshooting
10-20
Page 21
Flow Chart of Troubleshooting
10-2.
10-2-1.
RF
GSM
Receiver
900
CONTINUOS RX ON
RF INPUT : 62CH
Cell power : -50dBm
NORMAL CONDITION
cat c h th e ch a nne l?
YES
PAM100 CHECK
pin1 2≥-65d B m?
YES
PAM100 CHECK
pin16≥-65dBm?
YES
NO
NO
NO
CHECK
L105 ,L108,C105
RFS100
resolder or change
PAM100
resolder or change
1
2
3
U100 CHECK
pin24, 25≥-65dBm?
YES
the power source
of U100
YES
U100 CHECK
Pin34,35
GSM Recei ver is o k?
:26MH z
YES
END
NO
NO
NO
NO
F100, C10 1,
C100 ,C104, L100
resolder or change
check UCP30 0
check OSC100
change
GSM RX path component
resolder or change
and
4
5
6
10-21
Page 22
Flow Chart of Troubleshooting
10-2-2.
DCS Receiver
CONTINUOS RX ON
RF INPU T : 698CH
Cell power : -50dBm
NORMAL CONDITION
cat c h th e ch a nne l?
YES
PAM100 CHECK
pin1 2≥-65d B m?
YES
PAM100 CHECK
pin19≥-65dBm?
YES
U100 CHECK
pin22, 23≥-65dBm?
NO
NO
NO
NO
CHECK
L105 ,L108,C105
RFS100
resolder or change
PAM100
resolder or change
F101, C11 0,
C109 ,C112, L103
resolder or change
1
2
3
4
YES
the power source
of U100
YES
U100 CHECK
Pin34,35
GSM Recei ver is o k?
:26MH z
YES
END
NO
NO
NO
check UCP30 0
check OSC100
change
GSM RX path component
resolder or change
and
5
6
10-22
Page 23
Flow Chart of Troubleshooting
10-2-3.
PCS Receiver
CONTINUOS RX ON
RF INPU T : 650CH
Cell power : -50dBm
NORMAL CONDITION
cat c h th e ch a nne l?
YES
PAM100 CHECK
pin1 2≥-65d B m?
YES
PAM100 CHECK
pin21≥-65dBm?
YES
U100 CHECK
pin20, 21≥-65dBm?
NO
NO
NO
NO
CHECK
L105 ,L108,C105
RFS100
resolder or change
PAM100
resolder or change
F102, C11 6,
C115 ,C117, L106
resolder or change
1
2
3
4
YES
the power source
of U100
YES
U100 CHECK
Pin34,35
GSM Recei ver is o k?
:26MH z
YES
END
NO
NO
NO
check UCP30 0
check OSC100
change
GSM RX path component
resolder or change
and
5
6
10-23
Page 24
Flow Chart of Troubleshooting
10-24
Page 25
Flow Chart of Troubleshooting
GSM_PAM_IN
DPCS_PAM_IN
RF_EN
PCS_LNA_IN_P
PCS_LNA_IN_N
DCS_LNA_IN_P
DCS_LNA_IN_N
GSM_LNA_IN_P
GSM_LNA_IN_N
AFC
R103
C107
C108
VRF_2.9V_REG
C103
VRF_2.9V
C102
PAM_VRAMP
R102
VCCD_2.9V
16
17
18
P
H
O
F
R
_PDN
19
RFIPP
20
RFIPN
21
RFIDP
22
RFIDN
23
RFIEP
24
RFIEN
25
RFIAP
26
RFIAN
27
GND
28
E
D
V
O
I
D
M
X
X
9
2
15
5
6
P
L
D
D
D
D
O
F
V
V
R
U100
2
1
D
D
C
D
D
F
V
V
A
2
1
0
3
3
3
12
11
13
14
T
U
O
P
M
A
R
3
3
4
3
N
I
D
D
P
D
D
V
M
V
A
R
VIO
10
_RES
9
XOUT
8
BIP
7
BIN
6
BQP
5
BQN
4
SCLK
3
SDIO
2
_SEN
2
1
L
L
N
A
A
E
T
T
X
X
X
6
4
5
3
3
3
1
1
D
2
1
N
C
C
N
N
G
8
9
7
3
3
3
C153
RTX_I_P
RTX_I_N
RTX_Q_P
RTX_Q_N
SBCK
SBDT
SBLE
C111
R113
R114
R115
R117
VAPC
C130
C154
C155
C156
CLK13M_TR
CLK13M_MC
CLK13M_TI
CLK13M_YMU
XTAL_EN
C123
VRF_2.9V_REG
OSC100
43
2
1
C134
C133
VRF_2.9V
C132
10-25
Page 26
Flow Chart of Troubleshooting
GSM_LNA_IN_N
GSM_LNA_IN_P
DCS_LNA_IN_N
DCS_LNA_IN_P
PCS_LNA_IN_N
PCS_LNA_IN_P
L100
L103
L106
C100
C104
C109
C112
C115
C117
GSM_PAM_IN
PAM_VRAMP
3
4
3
4
3
4
VBAT
F100
OUT
OUT
F101
OUT
OUT
F102
OUT
OUT
C124
RFS100
1
IN
G2G
C101
5
1
IN
G2G
5
C110
C105
8
0
1
L
L101
G
G
C
A
4
1
3
2
L102
L109
C106
L111
C149
ANT100
ANT
ANT101
C113
5
0
1
L
1
IN
G2G
5
C116
1
9
6
2
4
2
1
1
1
1
1
X
R
2
GND
2
0
GND
PAM100
2
8
GND
1
5
GND
1
M
S
3
GND
1
G
_
T
NI
T
A
_
F
B
R
V
1
7
1
T
2
3
4
N
X
X
X
A
R
R
R
VCC2D
VCC1
S
V1
N
C
E
D
_
P
_
K
D
NI
M
2
1
S
O
S
A
S
_
X
P
F
B
R
M
B
8
T
V
V
V
R
V
V
V
7
8
5
4
1
9
6
1
R104
C125
C126
R122
3
L107
0
1
2
C119
C127
C118
DPCS_PAM_IN
MODE_SEL
RF_EN
VBS2
VBS1
TX_EN
C151
C131
C129C128
10-26
Page 27
Flow Chart of Troubleshooting
10-2-4.
GSM
900
PAM1 00 pin12
PAM100 , L 105,
1
L108, C105
check & chang e
Transmitter
abo u t
2~5dBm?
YES
PAM100 pin 7 : 3.7V
PAM100 pin4: 'L OW'
NO NO
NO
YES
YES
PAM100
pin9 : 'H I GH'
YES
PAM100
pin 6 : 2.8V
YES
PAM100 pin11
3~6dBm ?
YES
PAM 100 check & change
NO
NO
NO
UCP300
check & change
UCP30 0
check &
change
3
BA TTER Y , BATTER Y CON NECTOR
ch eck & chan ge
UCP300 check & change
6
2
4
CONTINUS TX O N
CONDITION
MS TX level 19
CH : 62
RBW : 100KHz
VBW : 100K Hz
SPAN : 10MH z
REF LEV. : 10dBm
ATT. : 20dB
5
PAM1 00
cha nge or resolder
NO
9
UCP3 00
change
7
8
U100
pin4,5,6,7
1.7V
YES
10
PAM100
pin 6 : 1.2V
?
YES
PAM100 pin
12
:-5dBm?
YES
PAM100
change & r e s o l d e r
YES
U1 00
check &
ch ange
NO
NO
NO
11
U100
pin15 :
7~11dBm?
NO
U1 00
pin35 2 6MHz
Vp- p :950 mV
YES
U100 change or
resolder
NO
OSC 10 0
pin 3 : 26MHz
Vp- p : 95 0mV
NO
OSC100
change or resolder
YES
U100
change or
resolder
10-27
Page 28
Flow Chart of Troubleshooting
10-2-5.
DCS Transmitter
PAM1 00 pin12
abo u t
2~5dBm?
YES
PAM100 , L 105,
1
L108, C105
check & chang e
PAM100 pin 7 : 3.7V
PAM100 pin4: 'HIGH'
pin 9: 'H I GH'
NO NO
NO
YES
YES
PAM100
YES
PAM100
pin 6 : 2.8V
YES
PAM100 pin1
3~6dBm ?
YES
PAM 100 check & change
NO
BA TTER Y , BATTER Y CON NECTOR
NO
NO
UCP300
check & change
UCP30 0
check &
change
3
ch eck & chan ge
UCP300 check & change
6
2
4
CONTINUS TX O N
CONDITION
MS TX level 12
CH : 698
RBW : 100KHz
VBW : 100K Hz
SPAN : 10MH z
REF LEV. : 10dBm
ATT. : 20dB
5
PAM1 00
cha nge or resolder
NO
9
UCP3 00
change
7
8
U100
pin4,5,6,7
1.25V
YES
10
PAM100
pin 6 : 1.2V
?
YES
PAM100 pin
12
:-5dBm?
YES
PAM100
change & r e s o l d e r
YES
U1 00
check &
ch ange
NO
NO
NO
11
U100
pin18 :
7~11dBm?
NO
U1 00
pin35 2 6MHz
Vp- p :950 mV
YES
U100 change or
resolder
NO
OSC 10 0
pin 3 : 26MHz
Vp- p : 95 0mV
NO
OSC100
change or resolder
YES
U100
change or
resolder
10-28
Page 29
Flow Chart of Troubleshooting
10-2-6.
PCS Transmitter
PAM1 00 pin12
abo u t
2~5dBm?
YES
PAM100 , L 105,
1
L108, C105
check & chang e
PAM100 pin 7 : 3.7V
PAM100 pin4: 'HIGH'
pin 9: 'H I GH'
NO NO
NO
YES
YES
PAM100
YES
PAM100
pin 6 : 2.8V
YES
PAM100 pin1
3~6dBm ?
YES
PAM 100 check & change
NO
BA TTER Y , BATTER Y CON NECTOR
NO
NO
UCP300
check & change
UCP30 0
check &
change
3
ch eck & chan ge
UCP300 check & change
6
2
4
CONTINUS TX O N
CONDITION
MS TX level 12
CH : 650
RBW : 100KHz
VBW : 100K Hz
SPAN : 10MH z
REF LEV. : 10dBm
ATT. : 20dB
5
PAM1 00
cha nge or resolder
NO
9
UCP3 00
change
7
change & r e s o l d e r
8
U100
pin 4,5,6,7
1.25V
YES
10
PAM100
pin 6 : 1.2V
?
YES
PAM100 pin
12
:-5dBm?
YES
PAM100
NO
U1 00
check &
ch ange
NO
NO
NO
11
U100
pin18 :
7~11dBm?
YES
U1 00
pin35 2 6MHz
Vp- p :950 mV
YES
U100 change or
resolder
NO
OSC 10 0
pin 3 : 26MHz
Vp- p : 95 0mV
NO
OSC100
change or resolder
YES
U100
change or
resolder
10-29
Page 30
Flow Chart of Troubleshooting
10-2-7.
Bluetooth Part
BT connection disable
Check BT functio n ON
YES
Check the voltage of
C137 is around 1.8V
YES
Check 26MHz Clock on
U1 0 3
YES
NO
NO
NO
Enable B T function
Check U102 and change
Check U103 or
Ini t ial par t
Check the
assembled status of
BTAN100
YES
Exchan ge U10 3
YES
END
NO Resol der or chang e
NO
BTAN100
check UCP200
10-30
Page 31
Flow Chart of Troubleshooting
VBT_EN
VBAT VBT_1.8V
U102
NC
5
C137
C136
R118
1
STBY
2
GND
3
VIN4VOUT
GND
6
C139
10-31
Page 32
Flow Chart of Troubleshooting
VBT_1.8V
BTANT100
12
C157
R106
R123
C159
C158
R124
3
F103
UNBAL
G
G
46
C138
G
81
BAL
BAL
C
N
2
R120
C146
C148
C145
C152
C147
C144
PCM_CLK
PCM_IN
PCM_OUT
PCM_SYNC
5
7
C
N
VBT_1.8V
L112
U103
A4
VDD_ANA
C6
VDD_CORE
B2
VDD_LO
D6
VDD_PADS
G4
VDD_PIO
C2
VDD_RADIO
A5
VDD_USB
F3
PIO[0]
F4
PIO[1]
G1
PIO[2]
G2
PIO[3]
E6
PIO[4]
F5
PIO[5]
D7
PIO[6]
E5
PIO[7]
E3
PIO[8]
F1
PIO[9]
F2
PIO[10]
D3
AIO[0]
C3
AIO[2]
B6
PCM_CLK
B7
PCM_IN
E4
PCM_OUT
D5
PCM_SYNC
E2
RF_A
E1
RF_B
UART_CTS
UART_RTS
UART_RX
UART_TX
SPI_CLK
SPI_CSB
SPI_MISO
SPI_MOSI
USB_DN
USB_DP
XTAL_IN
XTAL_OUT
AUX_DAC
RESETB
VREG_IN
TEST_EN
VSS_ANA
VSS_DIG
VSS_LO
VSS_PADS
VSS_RADIO
C4
A7
TP100
D4
C5
TP101
G5
G6
F7
F6
A6
B5
A3
B3
D2
E7
A2
G7
B4
C7
B1
G3
C1
1
NC
2
NC
C150
R121
BT_TXD
BT_RXD
VBT_1.8V
OSC101
43
1
C142
2
C143
L104
10-32
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