4.2 - 62
MTP700 Portable Radio / Detailed Service Manual
TRANSCEIVER 800 MHz
DC Distribution () Test
Use this test on a unit with the following symptoms: no
Check R109 for 7.2Vdc
Is the voltage OK?
Yes
No
Go to V2_2.775V test.
Check U111 pin1
for 2.775Vdc
Is the voltage OK?
Yes
No
Go to V2_2.775V test.
Check Q101 pin2
or pin3 for 7.2Vdc
()
Is the voltage OK?
Yes
No
Check for defective zener
VR100.
Check for defective Q101.
Check traces to 16-pin
connector.
Содержание IMPRES Tetra MTP700
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