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January 2000 © TOSHIBA TEC 4 - 53 FC-22 TROUBLESHOOTING
4.1.21 Image processing options related service call
F51 Communications error between System-CPU and AI board during pre-scanning
1. Check if the AI board is securely connected to the connector on the SIC board.
2. Check if FROM is mounted on the IC8 on the AI board.
3. Check if FROM is mounted in the proper direction on the AI board.
4. Replace the AI board.
5. Replace the SIC board.
* Service call F51 occurs only when copying with the copy mode “AI” selected. The other copy modes
are operable.