Confirm your model
Lars Thrane LT-4200S GMDSS · 95-104746 Rev1.00 · 2024-11. Only LT-3100S and LT-4200S in the cited editions; do not apply their procedures to non-S systems.
How it connects
Dashboard should show the installed LT-4210S control unit and LT-4230 antenna; compare optional interface, alarm and printer units with the installation record. Preserve unit number, part number, serial and software version privately. The manual describes software propagation from the control unit to connected units; do not flash components separately. Messages > MSI is read-only information, not proof that an unread-MSI BAM alert is resolved. Use existing Dashboard records to distinguish installed-unit, network and alert states. The diagnostic archive is encrypted for the manufacturer; this site cannot decode it. Non-emergency recording only. Do not trigger Distress or SSAS, start tests, reset, update software or repeat commissioning. In real danger follow the exact official emergency instructions.
Before buying parts
These are compatibility notes and official reference links. Confirm the fault and exact part before buying.
Model-specific parts: start with the official source
Confirm the exact model and part number with the manufacturer or provider before buying any replacement part or accessory.
Check the model and official instructions ↓