Confirm your model
Kathrein UFS 923 si / sw · 250 GB / 1 TB · Original German Parts 1 and 2, dealer-preserved OEM documents; Part 2 cover software scope from 1.00, 250 GB and 1 TB versions. Match the model, product code and manual edition on this page. Photograph existing connections without changing them. First separate TV input and standby problems from missing satellite reception. Preserve the channel list and antenna settings; do not factory-reset, flash software, rescan or rewire as a first check.
How it connects
Match UFS 923 si/sw and the original Part 2 cover: software scope from 1.00, with 250 GB or 1 TB versions. Do not substitute a later 500 GB edition. Distinguish LNB 1 IN and LNB 2 IN from LOOP OUT. Read Tuner-Konfiguration without changing it; Durchschleifen limits tuner 2 to the receiving plane selected by tuner 1. Record which channels fail during a recording. In Netzwerkeinstellungen, note the existing DHCP state; a network fault does not prove satellite reception failure or that old portal services still work. Preserve recordings, channel lists and shared single-cable assignments; do not reset, format, flash or rewire first.
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 ↓