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4.11 Earphone Trouble
Circuit Diagram
Ear-jack
R212
R207
R206
J201
C211
C212
R211
R210
U202
U201
JACK_DETECT
EARPHONE & HOOK DETECT INTERFACE
Inserted
Not Pressed
LOW
STEREO HEADSET INTERFACE
STATUS
HOOK_DETECT
HIGH
Not Inserted
Pressed
1K
R206
AVL5M02-200
VA203
9
1A
1B0
1
1B1
2
1S
8
2A
6
3
2B0
4
2B1
2S
7
5
GND
10
VCC
2
GND
1
OUT
VCC
5
3
VIN+
VIN-
4
U203
FSA2267L10X
U201
LMV7291MGX-NOPB
1M
R218
2K
R204
C214
27p
R202
NA
100
R201
39p
C202
VA202
AVL5M02-200
100K
R209
100
R207
R205
2K
R211 10
10
R210
C203
39p
10u
C204
100p
C208
2
C205
0.1u
FSA4157L6X
U202
A
3
4
B0
6
B1
5
GND
S
1
VCC
R208
1M
2V8_VMEM
100
R212
39K
R216
C215
27p
C280
0.01u
R217
100K
R215
39K
27p
C216
2V8_VMEM
C206
39p
C207
39p
27p
C209
2V8_VMEM
27K
R214
2V8_VMEM
330K
R203
100p
C210
C201 0.1u
C213
39p
2V5_VMIC
R213
27K
100u
100u
C211
C212
J201
VA201
AVL5M02-200
VMIC_ON
MIDI_HEADSET_EN
HEADSET_L
HEADSET_R
HSO_R
HSO_L
HOOK_DETECT
EAR_PRECHARGE
JACK_DETECT
CARKIT_MICP
CARKIT_MICP
AUX_MICP
AUX_MICN
Test Point
VMEM
→
VMIC Switching
When circuit call is activated.
Removing DC noise circuit, when
audio path is opened.
This signal comes from DBB, and
when ear-jack was detected, this
circuit is worked.
Z3X-BOX.COM
Summary of Contents for CE500
Page 3: ... 4 Z 3 X B O X C O M ...
Page 77: ...4 TROUBLE SHOOTING 78 5 Check Tx I Q TXQP TXQN TXIN TXIP U704 Test Point Z 3 X B O X C O M ...
Page 85: ...Note 86 Z 3 X B O X C O M ...
Page 93: ... 94 8 PCB LAYOUT Z 3 X B O X C O M ...
Page 94: ... 95 8 PCB LAYOUT Z 3 X B O X C O M ...
Page 95: ... 96 Z 3 X B O X C O M ...
Page 103: ...9 CALIBRATION 104 L Standalone Test Equipment Setup Oscilloscope Z 3 X B O X C O M ...
Page 105: ... 106 Z 3 X B O X C O M ...
Page 127: ...Note 128 Z 3 X B O X C O M ...