4. Troubleshooting
► Error Code
S1–5521
► Error message
FDI device is not installed. Install the device.
► Symptom
The machine can't detect the FDI device.
► Troubleshooting method
1) Install the FDI device.
2) If the FDI device is already installed, update the firmware for main board.
(Refer to 4.3. Updating Firmware)
3) Remove the rear cover.
(Refer to 3.3.2 Rear Cover)
4) Check the connection between FDI device and main board.
5) If the FDI device(CLX-KIT10F) is defective, replace it..
6) If the problem persistss, replace the main board(JC92-02429A).
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