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/ Service Manual
3. TECHNICAL BRIEF
3.9 Microphone
The microphone is placed to the front cover and contacted to main PCB. The audio signal is passed to
AIN2P and AIN2N pins of AD6537. The voltage supply VMIC is output from AD6537B, and is a biased
voltage for the AIN2P.
The AIN2P and AIN2N signals are then A/D converted by the voiceband ADC part of AD6537B.The digitized
speech (PCM 8KHz,16KHz) is then passed to the DSP section of AD6527 for processing (coding,
interleaving etc).
3.10 Main Speaker
In the case of B2100 , there are 2 different speakers. One is main speaker for the received voice, key tone
and other MIDI sounds and the other is headset speaker.
The main speaker is driven directly from AD6537B AOUT1P and AOUT1N pins and the gain is controlled by
the PGA in an AD6537B.
Figure 3-28. Connection between Microphone and AD6537B
Содержание B2100
Страница 1: ...Service Manual Model B2100 Service Manual B2100 P N MMBD0047901 Date April 2005 Issue 1 0 ...
Страница 22: ...24 ServiceManual 3 TECHNICAL BRIEF Figure 3 7 RF LDO CIRCUIT DIAGRAM ...
Страница 40: ...42 ServiceManual 3 TECHNICAL BRIEF Figure 3 23 LCD INTERFACE CIRCUIT ...
Страница 46: ...48 ServiceManual 4 TROUBLE SHOOTING Figure 4 1 a 4 TROUBLE SHOOTING 4 1 RX Trouble TEST POINT ...
Страница 47: ...ServiceManual 49 4 TROUBLE SHOOTING Checking Flow Figure 4 1 a ...
Страница 48: ...50 ServiceManual 4 TROUBLE SHOOTING 1 Checking Regulator Circuit TEST POINT CIRCUIT Checking Flow Figure 4 2 ...
Страница 51: ...ServiceManual 53 4 TROUBLE SHOOTING Checking Flow Table 4 2 ...
Страница 52: ...54 ServiceManual 4 TROUBLE SHOOTING 4 Checking RX path Circuit TEST POINT Checking Flow CIRCUIT ...
Страница 53: ...ServiceManual 55 4 TROUBLE SHOOTING 5 Checking RX IQ TEST POINT CIRCUIT Waveform Checking Flow Graph 4 4 ...
Страница 54: ...56 ServiceManual 4 TROUBLE SHOOTING 4 2 TX Trouble TEST POINT ...
Страница 55: ...ServiceManual 57 4 TROUBLE SHOOTING Checking Flow ...
Страница 56: ...58 ServiceManual 4 TROUBLE SHOOTING 1 Checking Regulator Circuit TEST POINT CIRCUIT Checking Flow ...
Страница 59: ...ServiceManual 61 4 TROUBLE SHOOTING Checking Flow Table 4 3 ...
Страница 62: ...64 ServiceManual 4 TROUBLE SHOOTING 4 3 Power On Trouble TEST POINT CIRCUIT ...
Страница 63: ...ServiceManual 65 4 TROUBLE SHOOTING Checking Flow ...
Страница 64: ...66 ServiceManual 4 TROUBLE SHOOTING 4 4 Charging Trouble TEST POINT CIRCUIT ...
Страница 65: ...ServiceManual 67 4 TROUBLE SHOOTING Checking Flow ...
Страница 66: ...68 ServiceManual 4 TROUBLE SHOOTING 4 5 Vibrator Trouble TEST POINT CIRCUIT ...
Страница 68: ...70 ServiceManual 4 TROUBLE SHOOTING 4 6 LCD Trouble TEST POINT ...
Страница 69: ...ServiceManual 71 4 TROUBLE SHOOTING Checking Flow ...
Страница 70: ...72 ServiceManual 4 TROUBLE SHOOTING 4 7 Camera Trouble TEST POINT CIRCUIT DIAGRAM ...
Страница 71: ...ServiceManual 73 4 TROUBLE SHOOTING Checking Flow ...
Страница 72: ...74 ServiceManual 4 TROUBLE SHOOTING 4 8 Speaker Trouble TEST POINT CIRCUIT DIAGRAM ...
Страница 73: ...ServiceManual 75 4 TROUBLE SHOOTING Checking Flow ...
Страница 74: ...76 ServiceManual 4 TROUBLE SHOOTING 4 9 SIM Card Interface Trouble TEST POINT CIRCUIT DIAGRAM SIM CONNECTOR ...
Страница 75: ...ServiceManual 77 4 TROUBLE SHOOTING Checking Flow ...
Страница 76: ...78 ServiceManual 4 TROUBLE SHOOTING 4 10 Earphone Trouble TEST POINT CIRCUIT DIAGRAM ...
Страница 77: ...ServiceManual 79 4 TROUBLE SHOOTING Checking Flow ...
Страница 78: ...80 ServiceManual 4 TROUBLE SHOOTING 4 11 KEY backlight Trouble TEST POINT ...
Страница 79: ...ServiceManual 81 4 TROUBLE SHOOTING CIRCUIT DIAGRAM Checking Flow ...
Страница 80: ...82 ServiceManual 4 TROUBLE SHOOTING 4 12 Receiver Trouble TEST POINT CIRCUIT DIAGRAM ...
Страница 82: ...84 ServiceManual 4 TROUBLE SHOOTING 4 13 Microphone Trouble TEST POINT CIRCUIT DIAGRAM ...
Страница 83: ...ServiceManual 85 4 TROUBLE SHOOTING Checking Flow SETTING After initialize Agilent 8960 Test EGSM DCS mode ...
Страница 84: ...86 ServiceManual 4 TROUBLE SHOOTING 4 14 RTC Trouble TEST POINT CIRCUIT DIAGRAM ...
Страница 85: ...ServiceManual 87 4 TROUBLE SHOOTING Checking Flow ...
Страница 86: ...88 ServiceManual 4 TROUBLE SHOOTING 4 15 Indication LED Trouble TEST POINT CIRCUIT DIAGRAM ...
Страница 87: ...ServiceManual 89 4 TROUBLE SHOOTING Checking Flow Indication LED only operates in trickle charging mode ...
Страница 94: ...96 ServiceManual 5 DOWNLOAD AND CALIBRATION 11 Wait until Sending Block is completed ...
Страница 98: ... 100 6 BLOCK DIAGRAM 6 BLOCK DIAGRAM Base Band ...
Страница 99: ... 101 6 BLOCK DIAGRAM 6 BLOCK DIAGRAM RF ...
Страница 100: ... 102 7 CIRCUIT DIAGRAM 7 1 MANI ...
Страница 101: ... 103 7 CIRCUIT DIAGRAM 7 2 AUDIO MIDI ...
Страница 102: ... 104 7 CIRCUIT DIAGRAM 7 3 MEMORY MMI IO ...
Страница 103: ... 105 7 CIRCUIT DIAGRAM 7 4 LCD CONN ...
Страница 104: ... 106 7 CIRCUIT DIAGRAM 7 5 RF Circuit ...
Страница 105: ... 107 7 CIRCUIT DIAGRAM 7 6 CAMERA ...
Страница 106: ... 108 8 PCB LAYOUT ...
Страница 107: ... 109 8 PCB LAYOUT ...
Страница 116: ...118 ServiceManual 10 STAND ALONE TEST Figure 11 2 HW test setting Figure 11 3 Ramping profile ...