Motorola MTP700 - Page 103

TRANSCEIVER 400 MHz MTP700 Portable Radio / Detailed Service Manual 4.1 - 69
DC Distribution (SWB+ 7.2V) Test
Use this test on a unit with the following symptoms: no 7.2Vdc SWB+.
Is the voltage OK?
Re
place Q201.
Check Q201 pin2 or pin3 for
7.2Vdc.
Yes
No
No
Yes
Is the voltage OK?
Are the
yOK?
No
Yes
Check R217.
Check traces to U205, R215,
R256.
Check 7.2Vdc at Q201 pin6.
Check Q201 pin5 for
2.7Vdc.
Go to V3_2.775V test.
Is the resistor OK?
YesNo
Replace R217.
Check R229.
Replace Q201.
Is the resistor OK?
Replace Q201. Replace R229.
No Yes