Low Or No Rx Injection Signal (136-174 Mhz); Figure 5-9. Low Or No Rx Injection Signal (136-174 Mhz) - Motorola ASTRO XTL 1500 Detailed Service Manual

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5.6.7 Low or No RX Injection Signal (136–174 MHz)
START
Low or No RX
Injection Signal
on TP6771
Approx.
7.5V on
R3800/R3801
?
Approx.
7.5V on
R3872/Q3768
?
Approx.
9V on
C3069/L3775
?
Check components
between Q3762
and TP6771
June 15, 2005
Check Q3761 and
No
DC Bias Circuitry;
Yes
Check components
No
around Q3769, if
Yes
Check components
No
around Q3762, if
Yes
Figure 5-9. Low or No RX Injection Signal (136–174 MHz)
replace if
necessary
OK replace
Q3769
OK replace
Q3762
Troubleshooting Charts: Flowcharts
AEPF-27810-O_VHF
6815854H01-A