Simrad SRT - Troubleshooting; Symptom table; Potential cause and corrective action table; TXRX missing data

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Troubleshooting | SRT LAN radar sensor S-band down-mast Service Manual
Troubleshooting
Symptom table
Symptom Potential cause
Transceiver does not turn on 1, 3, 7
Transceiver cannot be controlled 7
Transceiver performance is low 4, 7
Transmitter does not generate RF 2, 5, 6, 7
Potential cause and corrective action table
Potential cause Check Corrective action
1 Power supply is damaged Check 52 V on TB2 on SRT
PWR-DC PCB; if missing
check line (220 V)
If 220 V AC is present,
replace the power
supply
2 SRT PWR-DC PCB is
damaged
Check the 700 V on TB3 and
the 15V on TB1
If a voltage is missing
replace SRT PWR-DC
PCB
3 Video signal interrupted Check video signal quality Repair damaged
video cable
4 Magnetron is in End Of Life Check fail and the
magnetron work time
Replace the
magnetron
5 SRT MOS PCB is damaged Check TR-Pull and TR-Push
on SRT Control PCB
If the two signals are
presents replace the
SRT MOS PCB
6 SRT Control PCB is
damaged
Check on SRT Control PCB
TR-Push, TR-Pull
If the two signals are
missing replace the
SRT Control PCB
7 Call assistance Contact the manufacturer’s service department
TXRX missing data
Step Check Yes No Corrective action
1 Power switch lighted √ Check the main supply
√ Open TXRX
2
Power switch lighted √ Check 52V on the SRT down
adapter
Open TXRX √
Led D1 “PWR” on SRT down adapter
lighted
√
3
50V on SRT down adapter √ Replace the power supply
√ Replace the SRT down
adapter
4
Power switch lighted √ Replace the SRT PWR-DC PCB
Open TXRX √
Led D1 “PWR” on SRT down adapter
lighted
√
Led D1 on SRT PWR-DC PCB lighted √
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