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CS 737X CDU
- Disconnect USB cable from the CDU.
- Press and hold the “INIT REF” key and the number “5” key.
- Connect USB cable to the CDU.
- The backlight flashes, indicating that CDU has successfully entered DFU mode.
- Release the “INIT REF” key and the number “5” key.
CS 737X EFIS
- Disconnect the USB cable from the EFIS.
- Disconnect the daisy chain cable from the EFIS when it is in the home simulator “daisy chain” mode.
- Press and hold the “STD” key.
- Connect the USB cable to the EFIS.
- The backlight flashes, indicating that EFIS has successfully entered DFU mode.
- Release the “STD” key.
CS 737X MCP
- Disconnect the USB cable from the MCP.
- Disconnect the daisy chain cable and DC power cable from the MCP when it is in the home simulator “daisy chain” mode.
- Toggle the “A/T ARM” switch to the “ARM” position and hold.
- Connect the USB cable to the MCP.
- The backlight flashes, indicating that MCP has successfully entered DFU mode.
- Release the “A/T ARM” switch.
CS 320N FCU-L/R
- Disconnect the USB cable from the FCU-L/R.
- Disconnect the daisy chain cable from the FCU-L/R when it is in the home simulator “daisy chain” mode.
- Pull and hold the Barometer Reference Selector Knob.
- Connect the USB cable to the FCU-L/R.
- The backlight flashes, indicating that FCU-L/R has successfully entered DFU mode.
- Release the knob.
CS 320N FCU-C
- Disconnect the USB cable from the FCU-C.
- Disconnect the daisy chain cable and DC power cable from the FCU-C when it is in the home simulator “daisy chain” mode.
- Pull and hold the HDG/TRK Selector Knob.
- Connect the USB cable to the FCU-C.
- The backlight flashes, indicating that FCU-C has successfully entered DFU mode.
- Release the knob.