Troubleshooting R&S M3SR Series 4100 HF Transceivers
4.7 6124.9007.82.01
-11- X10 External Synchronization Mode Synthesizer, Motherboard (Attenuator)
-12- Fill Gun and Erase-Function Fill Gun:
Front Panel (fuse F1, 1 A), if voltage at
contact 20 against contact 16 (ground)
of FILL connector (X5) is not present
(10 VDC
≤
U
≤
33 VDC).
Radio Controller
Motherboard (Fill Gun detect)
Erase Function:
Front Panel (button), Motherboard,
Radio Controller
-13- X21 RCB Serial (Fibre Optic) / Remote Power
On Function
Motherboard
-14- DC Voltages Power Amplifier (Power Supply)
-15- X24 Serial Connection REMOTE Radio Controller
-16- X26 Serial Connection DATA Terminal 2 / FSK
Test
Frontend
-17- X5011/X5012 GS4102 NMEA/DSC Interface
Test (optional)
NMEA Interface
Failure in 3.3 - Function Test Module(s) / Device(s) to be Replaced
Test
Step
Test
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