Motorola T720 - Rfr3300

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Troubleshooting
……………………………………..
61
Introduction…………………………….……………. 61
Troubleshooting and Repair……………………………….
61
Testing after Repair…………………………………. 61
No turn on debug procedure……………………….. 62
Internal charger test debugging……………………. 62
Transmitter Troubleshooting…………………………………………
63
T720 Troubleshooting
………………………………
67
Blco Diagram………………………………………….
68
Antenna……………………………………………….
69
Duplexer……………………………………………….
71
Power Detector…………….………………………… 72
RFR3300…………………...…..………….…………..
74
Amps IF Filter……………………………….………. 77
GPS IF………….………………..…………………….
78
CDMA IF Filter……………………………………….
79
IFR3300………………………………….……..………
81
Up Mixer (RFT3100)…….……………………………
84
1900 TX Filter & PA……………….………….………
87
800 TX Filter & PA……………….………….……….
89
TCXO……………………………………………… 91
VCO Syn…………………………………………. 92
MSM (5100)……………………………………………
94
PM……………………………………………………..
97
CE BUS………………………………………………..
100
Harness………………………………………………..
101
Batt Charging…………………………………………
103
Audio Interface………………………………………. 106
Memory…………………………………………… 108
Connectors………………………………………. 110
Replacement Parts………………………………….... 111
Mechanical Explored Diagram……………………..……………. 11011
Mechanical Parts list………………………………….
112
Electrical Parts list……………………………………
113
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