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4.18.5 Microphone for Head_Set
MIC for Head_Set path as below:
Insert Headset -> EAR_SENSE_N(pin6) go 0V -> MSM6250 sense Head_Set insertion ->
MIC signal go to MSM(C200, C201) by through b-to-b connector
4. TROUBLE SHOOTING
- 118 -
DAUGHTER_HEADSET
C932
47p
33p
47p
C931
C916
C912
10p
2.2K
R905
16
17
18
2
3
4
5
6
7
8
9
C-1827541
CN901
1
10
11
12
13
14
15
C907
33u
10u
C914
C913
VA900
EVLC14S02050
33p
10p
C917
EVLC14S02050
VA902
UCLAMP0505A
1
2
3
4
5
6
C915
10p
D901
33u
C911
R907
2.2K
10K
R903
MIC2P
MIC2N
HP_OUT_R
EAR_SENSE_N
HOOK_SENSE_N
MULTI_ADC
HP_OUT_L
MICBIAS
VREG_MSMP_2.7V
Start
EAR_SENSE_N is 0V?
Yes
END
Make a call
Change the SUB b' d
Change the SUB b' d
MIC_BIAS is 1.8V ?
Change the Main B'd
Yes
OK
NO
NO
NO
Try change the head set
Near to MSM
0.1u
C239
W15
HPH_R
W17
HPH_L
W18
MICOUTN
AF18
EAR1OP
AF19
AUXIN_AUXIR
AF20
MIC1N
AF22
MICINP
AF24
CCOMP
AE19
AUXIP_AUXIL
AE20
MIC1P
AE22
MICINN
AE23
MICBIAS
AC17
EAR1ON
AC18
AUXON_AUXOR
MIC2P
AC19
AC20
MICFBP
AC21
MICFBN
AB23
HKADC[5]
MIC2N
AA19
MICOUTP
AA17
AUXOP_AUXOL
AA18
0.022u
C200
0.022u
C201
MIC2N
MIC2P
RCV-
RCV+
HPL_L
HPL_R
VBAT_TEMP
MICOUTP
MICINP
MIC1N
MICINN
MIC1P
MICFBN
MICFBP
MICOUTN
GND_RET
MICBIAS
Содержание U880
Страница 1: ...Date November 2005 Issue 1 0 Service Manual Model U880 Service Manual U880 ...
Страница 20: ...3 TECHNICAL BRIEF 21 ...
Страница 32: ...3 TECHNICAL BRIEF 33 Figure 3 5 6 1 GSM PA functional block diagram ...
Страница 35: ...3 TECHNICAL BRIEF 36 Figure 3 5 10 1 Bluetooth system architecture ...
Страница 50: ...3 TECHNICAL BRIEF 51 Figure 3 10 3 2 1 PM6650 Functional Block Diagram ...
Страница 110: ...4 TROUBLE SHOOTING 111 R605 R606 receiver signal serial resistor Receiver CN600 50pin LCD connector FPCB for LCD Module ...
Страница 112: ...4 TROUBLE SHOOTING 113 R605 R606 receiver signal serial resistor CN600 50pin LCD connector CN901 C907 C911 ...
Страница 114: ...4 TROUBLE SHOOTING 115 Loud Speaker U502 U503 Amp ...
Страница 118: ...4 TROUBLE SHOOTING 119 C200 C201 for MIC serial capacitor ...
Страница 121: ...4 TROUBLE SHOOTING 122 Q404 Q403 Q402 VBATT GND ...
Страница 128: ...5 DOWNLOAD 129 5 Choose a Module Image file after clicking on the Browse button ...
Страница 132: ...5 DOWNLOAD 133 Downloading the AMSS Modem image Rebooting and waiting for a while Performing NV restore ...
Страница 134: ...5 DOWNLOAD 135 Download of Module image in progress Download process has completed successfully ...
Страница 143: ...6 BLOCK DIAGRAM 144 6 3 Interface Diagram U880 Interface Diagram ...
Страница 145: ... 146 ...
Страница 154: ... 155 8 PCB LAYOUT ...
Страница 155: ... 156 8 PCB LAYOUT ...
Страница 156: ... 157 8 PCB LAYOUT ...
Страница 157: ... 158 8 PCB LAYOUT ...
Страница 158: ... 159 8 PCB LAYOUT ...
Страница 159: ... 160 8 PCB LAYOUT ...
Страница 166: ...9 CALIBRATION 167 Click START button U880 U880_ver1 1 U880 U880 Click U880 ...
Страница 167: ... 168 ...
Страница 168: ... 169 ...
Страница 170: ... 171 ...
Страница 171: ... 172 ...
Страница 196: ...Note ...
Страница 197: ...Note ...