5. Trouble shooting
- 78 -
5.6 Receiver & Speaker trouble
Check Points
-Speaker spring contact
-Audio amp soldering
-analog switch soldering
(3.2x1.6x1.1T)
2V72_IO
4.7u
C262
C268
100u
C260
0.1uF
1u
C261
C272
220n
C266
220n
1u
C263
R262
4.7K
0.068u
0.068u
C265
C271
R260
100K
100u
C269
VBAT
0.1uF
C267
C270
2.2u
MONO+
17
MONO-
23
MONO_IN-
22
PGND
25
RHP3D1
19
RHP3D2
24
RIN
8
ROUT
5
SCL
11
SDA
10
3
VDD1
16
VDD2
2
VOC
CBYPASS
21
GND1
4
12
GND2
20
GND3
14
I2CSPI_SEL
I2CSPI_VDD
7
13
ID_ENB
18
LHP3D1
LHP3D2
1
LIN
9
6
LOUT
15
LM4946SQX
U206
4.7K
R261
C264
1u
BBP_SND_L
BBP_SND_R
SPK_N
SPK_P
BBP_SND_L
HS_OUT_L
BBP_SND_R
HS_OUT_R
SCL
SDA
(MAIN SPEAKER & RECEIVER PATH Control)
RCV_P / N
SPK_P / N
H
SPK_RCV_SWITCH
SPK_RCV_SEL
L
SPK_RCV_P / N Links to
C290
VBAT
NA
1u
C242
L203
27nH
EVL5M02200
VA202
27p
C246
39p
C245
COM1
3
COM2
9
GND
6
4
IN1
8
IN2
NC1
5
7
NC2
2
NO1
10
NO2
1
VCC
NLAS5223BMNR2G
U208
L202
27nH
VA201
EVL5M02200
C250
39p
SPK_RCV_P
SPK_RCV_N
SPK_RCV_SEL
SPK_N
SPK_P
RCV_P
RCV_N
Содержание KE 770
Страница 1: ...Service Manual Model KE770 Service Manual KE770 Date April 2007 Issue 1 0 ...
Страница 3: ... 4 ...
Страница 5: ... 6 ...
Страница 49: ...3 TECHNICAL BRIEF 50 3 15 BLUETOOTH Figure 22 BLUETOOTH Functional block diagram ...
Страница 57: ...3 TECHNICAL BRIEF 58 RF Block Diagram III 2 RF circuit ...
Страница 76: ...Check Points 5 Trouble shooting 77 ...
Страница 78: ...5 Trouble shooting 79 ...
Страница 82: ...5 Trouble shooting 83 ...
Страница 87: ...5 Trouble shooting 88 ...
Страница 100: ... 101 6 Download S W upgrade Click on the blue text to select the COM port ...
Страница 101: ...6 Download S W upgrade 102 Will change the window as below ...
Страница 103: ...6 Download S W upgrade 104 During download the screen will look something like this ...
Страница 105: ... 106 ...
Страница 111: ... 112 8 PCB LAYOUT ...
Страница 112: ... 113 8 PCB LAYOUT ...
Страница 113: ... 114 8 PCB LAYOUT ...
Страница 114: ... 115 8 PCB LAYOUT ...
Страница 115: ... 116 8 PCB LAYOUT ...
Страница 117: ...9 RF Calibration 118 9 2 3 Click SETTING Menu 9 2 4 Setup Ezlooks menu such as the following figure ...
Страница 119: ...9 RF Calibration 120 9 2 7 Select MODEL 9 2 8 Click START for RF calibration 9 2 9 RF Calibration finishes ...
Страница 121: ...10 Stand alone Test 122 4 Click Update Info for communicating Phone and Test Program ...
Страница 125: ... 126 ...
Страница 143: ...Note ...
Страница 144: ...Note ...