GH68-09953A-TSHOO-9.pdf
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9.
Flow Chart of Troubleshooting
9-1. Power On
' Power On ' does not work
Yes
Check the Battery Voltage
is more than 3.4V
No
Change the Battery
Yes
No
U201PIN57(PS_HOLD)
=2.6V?
Check the PMU related to PS_HOLD
Yes
Check the Clock at
OSC600=32KHZ
No
Resolder X1
Yes
C628(VREG_MSMC) =1.375V?
No
Check the PMIC
Yes
C626(VREG_MSME) = 1.8V?
C622(VREG_MSMP) = 2.6V?
C620(VREG_MSMA) = 2.6V?
No
Check the PMIC
Yes
Check for the clock at
C223= 19.2 MHz
No
Check the clock generation circuit
(TCXO200)
Yes
Check the initial operation
Yes
END
9-1
Flow Chart of Troubleshooting
Power On
V_IN
VREG_RFRX2_3.0V
R600
C601
VREG_MSMP_2.6V
VREG_MSME_1.8V
C655
U600
R601
C602
VREG_RFTX_2.85V
VREG_MMC_2.85V
VREG_RFRX_2.85V
VREG_MSMA_2.6V
VEXT_5V_PM
VREG_USIM_3.0V
R623
USB_VBUS_5V
VREG_USB_3.3V
VREG_MSMC_1.37V
C603
R602
VREG_BT_2.6V
R622
2
VCHG
14
VSW_5V
16
USB_VBUS
12
VREG_5V
3
ISNS_P
27
R603
VSW_PA
C604
5
ISNS_M
28
4
CHG_CTL_N
VSW_MSMC
31
37
VREG_PA
L600
15
USB_CTL_N
32
VREG_MSMC
R820
6
VBAT
L601
VSW_MSME
60
VCOIN
36
VREG_MSME
POS
1
7
BAT_FET_N
10
VREG_USB
C605
48
VBACKUP
39
VREG_MMC
C606
C607
42
BAT601
VREG_RUIM
1
50
OSC600
ADC_BYP
VREG_MSMP
44
XTAL_IN
46
XTAL_OUT
56
VREG_MSMA
C608
64
NEG
2
VREG_WLAN
45
SLEEP_CLK
67
SLEEP_CLK
VREG_RFRX2
VREG_RFTX
73
58
TCXO_IN
53
TCXO_OUT
69
TCXO
VREG_RFRX1
55
TCXO_EN
TCXO_EN
R605
81
VREG_SYNT
84
VREG_TCXO
BUFF_TCXO
VREG_SYNT_2.8V
VREG_TCXO_2.8V
R606
70
AMUX_IN1
72
AMUX_IN2
82
AMUX_OUT
VF
61
R607
AMUX_OUT
REF_ISET
AMUX_OUT
63
REF_BYP
62
REF_GND
C610
C630
C631
REF_OUT
R608
80
REF_OUT
C609
C611
C612
C613
C614
C615
C616
C617
C618
C619
C620
C621
C622
C623
C624
C625
C626
C627
C628
C629
13
FLSH_DRV_N
8
USB_OE_MSM
USB_OE_N
17
21
USB_DAT_MSM
USB_SEO_MSM
USB_D_P
USB_D_M
USB_DAT
GP1_DRV_N
< USIM Socket >
19
LCD_DRV_N
22
USB_SE0
11
23
TP600
20
USB_D_M
USB_D_P
18
USB_ID
KPD_DRV_N
VIB_DRV_N
25
76
SPKR_IN_P
SPKR_OUT_M
79
VBATT
2
24
78
PS_HOLD
PHONE_ON
KPDPWR_N
SPKR_IN_M
KEY_LED_DRV
3
57
PS_HOLD
75
SIM600
SPKR_OUT_P
R609
1
66
BOOT_SW
JIG_ON_SW
68
CBL0PWR_N
CBL1PWR_N
74
R610
0
SPKR_BYP
V_IN
D601
9
77
PON_RESET_N
PON_RESET_N
VDD_SPKR
R611
30
RUIM_M_IO
MSM_SIM_IO
26
34
RUIM_M_CLK
VDD_PA
29
RUIM_IO
MSM_SIM_CLK
VDD_MSMC
33
VDD_MSME
35
Q600
U601
38
RUIM_CLK
MSM_SIM_RST
40
RUIM_M_RST
43
RUIM_RST
SBCK
VDD_RUIM
41
IN
1
52
6
D
D 1
6
NC
NC
VDD_MSM
PMIC_SBCK
PMIC_SBDT
PMIC_SBST
49
47
SBDT
51
SBST
VDD_ANA
54
83
65
5
D
D
2
5
GND
2
VREG_USIM_3.0V
R612
VDD_WLAN
VDD_RF
71
C632
C633
C634
4
S
3
4
GATE
FLAG 3
PM_INT_N
59
MSM_INT_N
VDD_MAIN
G
C635
C636
C637
C638
C639
C640
C641
C642
C644
C645
C643
R613
C646
R213
TRK_LO_ADJ
C238
1
VCON
2
GND
TCXO200
VREG_TCXO_2.8V
VCC
OUT
4
3
TCXO
C241
C242
C243
C244
L206
VREG_RFRX_2.85V
RX_QP
C215
C216
R206
R207
RX_QM
RX_IP
R208
37
36
34
33
32
46
45
44
43
42
41
40
39
38
35
RX_IM
1
GND1
RX_IP
31
2
UMTS_L_INP
RX_IM
30
3
GND2
VDDA7
29
C222
4
VDDA1
28
C223
1NF
TCXO
TCXO
U2100_RXP
5
27
GND3
U203
VDDA6
L207
6
26
C226
UMTS_H_INP
SBDT
SBDT
SBCK
SBST
7
GND4
SBCK
25
8
SBST
24
UMTS_H_INM
R210
C227
L208
9
GND5
VDDM
23
VREG_MSMP_2.6V
U2100_RXM
10
DNC2
GND8
22
C228
C229
11
GND6
DNC4
21
12
13
14
15 16
17
18
19
20
L209
VREG_RFRX_2.85V
C231
C232
RX_VCO
L210
R211
VREG_RFRX_2.85V
R212
C233
C234
VREG_SYNT_2.8V
C235
C236
C237
R214
TR201
2
S
Q202
R215
UHF_BAND_SEL
1
G
C239
3
2
L211
3
D
UHF_VCO_EN
1
OSC201
C240
CP2
5
VC
VCC
SW
3
7
OUT
1
C246
C245
R217
R216
R218
C247
C249
C248
86
42
R219
FAQ2
RX_UHF_LO_CAL
R220
9-
2
Flow Chart of Troubleshooting
9-
3
Flow Chart of Troubleshooting
9-2. Initial
Initial Failure
Yes
No
TP404 (PON_RESET_N) ="H"?
Check the circuit related to reset
Yes
No
Is TP500~507 OK?
Check the circuit related to momory
Yes
Check the circuit around
LCD & HDC800 (Short or not solder)
END
9-
4
Flow Chart of Troubleshooting
9-3. Charging Part
Abnormal charging part
Yes
No
R525 = 5V ?
Resolder R525
Yes
R809 =
"H" when charging with TA?
"L" when Charging with USB
No
Resolder R809
or raplace U800
Yes
No
U800 pin 5 = "H"
(when charging)
Replace PBA
Yes
END
9-
5
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