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Summary of Contents for Simrad SRT
- Page 1 SRT LAN radar sensor S-band down-mast Service Manual ENGLISH www.navico-commercial.com...
- Page 3 European Council Directive 2014/90/EU on Marine Equipment modified by Commission Implementing Regulation (EU) 2020/1170 (16 July 2020) - Wheelmark The relevant declaration of conformity is available in the product’s section at the following website: www.navico-commercial.com Preface | SRT LAN radar sensor S-band down-mast Service Manual...
- Page 4 Only reading these operating instructions cannot replace such training. Persons authorized to operate, maintain and troubleshoot the system are instructed and trained by Simrad. Persons operating or servicing this radar system must be familiar with the general safety regulations and specific safety systems, and they must have passed all required training.
- Page 5 Distance 10 W/m2 point (m) point (m) point (m) 30 KW Transceiver 12’ S-band Antenna (inside the antenna) (inside the antenna) X-Ray radiation This radar system does not generate X-ray radiation. Preface | SRT LAN radar sensor S-band down-mast Service Manual...
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Page 6: Table Of Contents
SRT Control PCB replacement Lisa SRT LAN down adapter PCB replacement SRT MINI-PSU PCB replacement: SRT LAN CPU PCB replacement Electronics frame disassembling SRT ADA PCB replacement Brushless controller replacement Contents | SRT LAN radar sensor S-band down-mast Service Manual... - Page 7 Gearbox with driving gear replacement Performance monitor arm replacement Rotating joint replacement RF cable replacement Pedestal replacement SRT LAN down-mast transceiver replacement Spare parts System diagrams Transceiver internal interconnection diagram Pedestal system diagram Contents | SRT LAN radar sensor S-band down-mast Service Manual...
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Page 8: Component Overview
Performance monitor arm Cover - motor side Cover - electronics side Coaxial cable SRT down-mast cable Safety switch Grounding terminal SRT LAN down-mast transceiver Description SRT down-mast cable Power cable Component overview | SRT LAN radar sensor S-band down-mast Service Manual... -
Page 9: Component Location
ADA PCB √ Bearing reader PCB √ Brushless controller √ SRT LAN down-mast transceiver component location Component Electronics assy (SRT Control PCB, SRT PWR-DC PCB, SRT MOS PCB) Magnetron Circulator Component overview | SRT LAN radar sensor S-band down-mast Service Manual... -
Page 10: Srt Down Adapter Pcb
Description Trigger output to connect a non Simrad display as slave Pre-trigger output Video output to connect a non Simrad display as slave Antenna data output to connect a non Simrad display as slave SRT control PCB Connector Purpose Interlock... -
Page 11: Srt Pwr-Dc Pcb
LED ON (red): High voltage OK (700 V DC for modulator) R27, R32, R42 Modulation H .V. Adjustments factory made LED ON (green): + 52 V DC input OK Main power input | 11 Component overview | SRT LAN radar sensor S-band down-mast Service Manual... -
Page 12: Srt Mos Pcb
SRT MOS PCB Label Purpose Magnetron cathode terminal Magnetron filament terminal Grounding wire 12 | Component overview | SRT LAN radar sensor S-band down-mast Service Manual... -
Page 13: Preventive Maintenance
WORK IN PROGRESS - DO NOT SWITCH ON On the electric switchboard, set the radar main breaker to ON and remove the card reading WORK IN PROGRESS - DO NOT SWITCH ON | 13 Preventive maintenance | SRT LAN radar sensor S-band down-mast Service Manual... -
Page 14: Internal Inspection Of The Pedestal
Remove the eight screws securing the cover Remove the cover Remove the Electronics assy. See “Electronics assy disassembly” on page 30 Remove the four nuts securing the protective transparent cover on the SRT MOS PCB (A) 14 | Preventive maintenance |... -
Page 15: Software
Remove the protective transparent cover Remove the two nuts securing the magnetron cables, taking note of their position Remove the two plastic caps at the top of the SRT LAN down-mast. See “SRT LAN down-mast transceiver” on page 8 From the external side, unscrew and remove the two spacers securing the magnetron (B) -
Page 16: Tuning And Performance Monitor Calibration
From the Menu, select Settings and then Access control. Enter password “QWERTY” to enable the Service mode. From the Settings dialog go to Radar and select Installation... Select Extended tune 16 | Preventive maintenance | SRT LAN radar sensor S-band down-mast Service Manual... - Page 17 80%. Tuning offset The tuning offset sets the offset limits of the coarse tune. It should be adjusted for maximum radar returns. | 17 Preventive maintenance | SRT LAN radar sensor S-band down-mast Service Manual...
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Page 18: Timers Reset
(which reports OK or FAIL). When the magnetron is replaced, the timer must be reset. The transceiver lifetime cannot be reset, however, all the other counters will be reset. 18 | Preventive maintenance | SRT LAN radar sensor S-band down-mast Service Manual... - Page 19 | 19 Preventive maintenance | SRT LAN radar sensor S-band down-mast Service Manual...
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Page 20: Diagnostics
Opening the metallic cover gives access to EEPROM U18. Magnetron life time and internal transceiver setup is resident on this device. In case of SRT control PCB replacement we suggest to also swap the memory to transfer the original setting to the new PCB. - Page 21 Safety switch open If the safety switch is open +24 V fail < 18 V if power supply of SRT is 24 V +52 V fail < 40 V if power supply of SRT is 52 V Front end fail If Monitor voltage is <...
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Page 22: Checking The Radar Sensor
Checking the radar sensor Certain types of checks can be performed after opening the SRT LAN down-mast transceiver’s cover. ! Warning: When the cover of the SRT LAN down-mast transceiver is opened, the first safety switch called Interlock is activated. For extra safety, this spring... - Page 23 The transaction’s closing Jumper J8 can be performed only by a technician. ! Warning: Remember after every operation performed on the jumper 8 to open it to allow for warmup. | 23 Diagnostics | SRT LAN radar sensor S-band down-mast Service Manual...
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Page 24: Troubleshooting
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 24 | Troubleshooting | SRT LAN radar sensor S-band down-mast Service Manual... -
Page 25: Antenna Failures
SRT down adapter (or) Replace SRT down adapter (or) Call assistance √ Check HL IN and AZ IN signal on SRT Replace SRT Control PCB Control PCB √ Check HL OUT and AZ OUT signals on SRT Control PCB √... -
Page 26: Main Possible Failures
Control PCB to the Motor controller √ Check if the EN connection (grey wire) Replace the SRT Control PCB is present from the SRT Control PCB to the Motor controller √ Restore the connection √ Check on the brushless controller which red led is on √... - Page 27 Check the Bearing reader PCB and replace it if broken Check the SRT Control PCB and replace it if broken Check the connection cable from the SRT control to the Bearing reader | 27 Troubleshooting | SRT LAN radar sensor S-band down-mast Service Manual...
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Page 28: Fault Repair
Remove the eight screws securing the cover Remove the cover Remove the plastic caps at the top of the SRT LAN down-mast transceiver. See “SRT LAN down-mast transceiver” on page 8 From the external side, unscrew the spacer securing the Circulator to the Magnetron (A) -
Page 29: Lnfe And Rf Detector Replacement
Remove the LNFE and RF Detector. See “LNFE and RF Detector replacement” on page 29 ¼ Note: Do not remove the LNFE and RF Detector bracket. Remove the four screws securing the Limiter to the Circulator (A) | 29 Fault repair | SRT LAN radar sensor S-band down-mast Service Manual... -
Page 30: Noise Diode Replacement
Slide out the Electronics assy until the three internal holes of the Electronic assy coincide with the three external holes of the mechanical chassis Secure the Electronics assy using the three screws previously removed 30 | Fault repair | SRT LAN radar sensor S-band down-mast Service Manual... -
Page 31: Srt Pwr-Dc Pcb Replacement
Remove the nine nuts (A) and the two screws (B) securing the SRT PWR-DC PCB Remove the SRT PWR-DC PCB In order to install the new SRT PWR-DC PCB, perform the removal steps in reverse order Reassemble the Electronics assy performing the removal steps in reverse order... -
Page 32: Srt Control Pcb Replacement
Before installing the new SRT Control PCB, remove the EEPROM U18 from the old SRT Control PCB and replace it with the one in the new SRT Control PCB. If this operation is skipped, then the unit must be set up manually from blank to recover values and settings stored in the old... -
Page 33: Srt Mini-Psu Pcb Replacement
In order to install the new Lisa SRT LAN down adapter PCB, perform the removal steps in reverse order On the R5000 PSU, switch the power switch to the ON position and remove the card reading WORK IN PROGRESS - DO NOT SWITCH ON... -
Page 34: Electronics Frame Disassembling
In order to install the new SRT LAN CPU PCB, perform the removal steps in reverse order On the R5000 PSU, switch the power switch to the ON position and remove the card reading WORK IN PROGRESS - DO NOT SWITCH ON... -
Page 35: Brushless Controller Replacement
Remove the SRT ADA PCB In order to install the new SRT ADA PCB, perform the removal steps in reverse order Reassemble the Electronics frame performing the removal steps in reverse order Switch the safety switch to the ON position... -
Page 36: Brushless Motor Replacement
(D) and partially unscrew it. ¼ Note: Do not remove the screw. Unscrew the four screws securing the brushless motor (E) Remove the brushless motor (F) 36 | Fault repair | SRT LAN radar sensor S-band down-mast Service Manual... -
Page 37: Gearbox With Driving Gear Replacement
WORK IN PROGRESS - DO NOT SWITCH ON On the R5000 PSU, switch the power switch to the OFF position and place a card reading WORK IN PROGRESS - DO NOT SWITCH ON | 37 Fault repair | SRT LAN radar sensor S-band down-mast Service Manual... -
Page 38: Rf Cable Replacement
The covers should be supported by the chain. The top housing is very heavy and if unsecured and accidentally allowed to close, it could cause serious injuries. Unscrew and disconnect the RF cable connector from the Rotating joint 38 | Fault repair | SRT LAN radar sensor S-band down-mast Service Manual... -
Page 39: Pedestal Replacement
Unscrew and disconnect the RF cable connector from the coaxial cable connector (B) Remove the four nuts securing the coaxial cable (C) | 39 Fault repair | SRT LAN radar sensor S-band down-mast Service Manual... -
Page 40: Srt Lan Down-Mast Transceiver Replacement
Remove the fasteners securing the SRT LAN down-mast transceiver Remove the SRT LAN down-mast transceiver In order to install the new SRT LAN down-mast transceiver, perform the removal steps in reverse order On the R5000 PSU, switch the power switch to the ON position and remove the card reading... -
Page 41: Spare Parts
SP-304958A1-001 Performance monitor arm 30 kW transceiver 000-14830-001 RF Cable 30 kW transceiver SP-973371A3-001 ADA PCB 30 kW transceiver 000-14829-001 SRT LAN down adapter 30 kW transceiver | 41 Spare parts | SRT LAN radar sensor S-band down-mast Service Manual... -
Page 42: System Diagrams
System diagrams Transceiver internal interconnection diagram 42 | System diagrams | SRT LAN radar sensor S-band down-mast Service Manual... -
Page 43: Pedestal System Diagram
Pedestal system diagram | 43 System diagrams | SRT LAN radar sensor S-band down-mast Service Manual... - Page 45 www.navico-commercial.com...
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