Motorola GP series Service Information - Page 19

Browse online or download pdf Service Information for Radio Motorola GP series. Motorola GP series 24 pages. Professional radio
Also for Motorola GP series: Service Manual (26 pages), Service Information (31 pages), Service Information (43 pages), Service Information (30 pages), User Manual (16 pages), Manual (30 pages)

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Motorola GP series Service Information

Transmitter

3.0
Transmitter
Yes
1. Check Pin Diodes
2. Check Harmonic Filter
3. Check PA Bias
Inspect/Repair Tx.
Output Network
Is Power
OK?
Yes
Done
START
No Power
No
Is Current
~ 2 A?
No
Check components
around Q100
Is Power
OK?
Done
Is control voltage
at U101 Pin 1 > 5
Yes
Check input to
U101, Pin 16
Is voltage
> 1 Vpp?
Yes
Check level
U101, Pin 6
Yes
Is level
>5 Vpp?
No
Replace
Q101
Yes
No
Check PCIC
No
Troubleshoot
VCO
No
Check components
around U101
No
Is Power
OK?
Yes
Done
3-3
Replace
U101