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4.4 Receiver Trouble
•
Check Points
- Audio signals from ABB
- Audio signals to the receiver
- Audio signal path(R219, R227)
- Check the sound level to the speaker.
- Soldering of connector & speaker/receiver
- Speaker/Receiver
RECEIVER and HEADSET
R223
22
10p
C218
0
R226
0.022u
C224
C251
1S
6
2A
2B0
3
2B1
4
7
2S
GND
5
VCC
10
0.01u
FSA2267L10X
U204
1A
9
1
1B0
2
1B1
8
0.022u
C223
C217
10p
100p
C219
100K
R228
10p
C221
0
R219
0
R227
R222
22
R225
R224
0
100K
C222
10p
2V8_VMEM
SPK_EN
MIX_EN
EAR_HEADSET
RCV_P
RCV_N
EAR_SPK
HEADSET_SPK_R
HEADSET_SPK_L
HEADSET_L
EAR_N
EAR_P
HEADSET_R
From ABB
Receiver Path
Soldering Check
Vibrator &
Receiver
R227 : RCV_P
R219 : RCV_N
Check Audio signal here !
RCV_N and RCV_P
Test Point
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 ...