Motorola MTP700 Detailed Service Manual page 108

4.1 - 74
DC Distribution (VREF1_2.775V) Test
Use this test on a unit with the following symptoms: no VREF1_2.775V.
MTP700 Portable Radio / Detailed Service Manual
Check C285 for 2.775Vdc.
Is the voltage OK?
No
Check C252 for 3.3Vdc.
Is the voltage OK?
No
Go to V3_2.775V test.
Yes
Check traces to U307.
Yes
Change GCAP3 (U200).
TRANSCEIVER 400 MHz