Troubleshooting Flow Chart
UHF1 (400
‐
470 MHz)
32
[2] The APC voltage at TP811 should be above 2 V.
[3] Check whether there is an appropriate TX LO signal at C7047.
[4] Check whether the gain is 15 dB and the input signal is +5 dBm at Q7012.
[5] Check whether the gain is 15 dB and the input signal is +20 dBm at Q7010.
[6] Check whether the gain is 14 dB and the input signal is +35 dBm at Q7013.
Summary of Contents for MD652
Page 1: ...DIGITAL MOBILE RADIO...
Page 5: ...UHF1 400 470 MHz...
Page 15: ...Exploded View and Packaging Guide UHF1 400 470 MHz 8 3 2 Packaging Guide...
Page 53: ...43 9 PCB View Front Panel PCB View Top Layer X...
Page 54: ...44 Front Panel PCB View Bottom Layer...
Page 55: ...45 Main Board PCB View Top Layer...
Page 56: ...46 Main Board PCB View Bottom Layer...
Page 106: ...VHF1 136 174 MHz...
Page 116: ...Exploded View and Packaging Guide VHF1 136 174 MHz 8 3 2 Packaging Guide...
Page 154: ...43 9 PCB View Front Panel PCB View Top Layer...
Page 155: ...44 Front Panel PCB View Bottom Layer...
Page 156: ...45 Main Board PCB View Top Layer...
