User's Manual
7. TROUBLESHOOTING
The section includes voltage which should assist the engineer to isolate and repair the fault.
Voltage measurements should be made using a high-impedance voltmeter and the values given
are with respect to ground.
Careful alignment, using suitable test equipment, and quality interface cables should
ensure that the radio meet their specified performance.
Voltage Charts
Measurement Condition: 465MHZ,13.8V supply, RX Carrier Present.
Transistors .
RX TX
Ref. No.
B C E B C E
Q1 4.31 4.98 4.99 4.31 4.98 4.99
Q2 8.1 2.33 8.1 7.8 5.5 7.8
Q4 0 2.33 0 0 5.5 0
Q6 4.91 0 4.93 4.9 0 4.92
Q7 0 8.1 0 4.93 0.02 0
Q9 5.64 8.1 4.99 5.63 7.8 4.96
Q10 4.16 8.1 3.76 4.15 7.8 3.75
Q11 5.62 8.1 4.92 5.62 7.8 4.92
Q14 8.1 0.2 8.1 7.08 7.63 7.8
Q15 7.56 8.1 6.84 0.62 7.8 0
Q101 0.74 3.93 0 0 0 0
Q102 0.57 6.67 0 0 0 0
Q103 5.21 0 0 0 11.9 0
Q104 0.68 5.13 0 0 0 0
Q201 0 0.34 0 0 0.72 0
Q202 0.34 0.31 0 0.73 0 0
Q203 0.31 0 0.3 0 7.36 7.62
Q204 0 0 0 0.75 7.35 0
Q205 0 0 0 0.7 7.36 0.25
Q206 0 12.36 0 0.56 6.28 0
Q207 0 13.6 0 0 13.6 0
Q301 4.87 4.92 4.2 4.87 4.92 4.2
Q302 1.63 3.99 0.92 1.63 3.99 0.92
Q304 0.74 2.77 0 0.74 2.77 0
Q305 2.32 4.93 1.69 2.32 4.93 1.69
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