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Motorola Manuals
Radio
GP series
Service information
Transmitter - Motorola GP Series Service Information
Professional radio, lowband 29.7-42mhz and 35-50mhz
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Also See for GP Series
:
Detailed service manual
(494 pages)
,
Service manual
(300 pages)
,
Service information
(108 pages)
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
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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
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This manual is also suitable for:
Gp 300 series
Gp340
Gp380
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