SC603: Communication error within main control board
- Definition - [B]
The CPUs on the main control board cannot communicate properly with
each other.
- Possible causes -
• Main control board defective
SC604: Serial signal error in main control board
- Definition - [B]
Writing and reading serial signals for the DRAM produces discrepancies.
- Possible causes -
• Main control board defective
SC605: Communication error between main control and IPU boards
- Definition - [B]
The main CPU cannot communicate with the IPU CPU properly.
- Possible causes -
• Poor connection between main control board and IPU board
• Main control board defective
• IPU board defective
SC622: Communication error between main control board and display
editor I/F board
- Definition - [C]
The main CPU cannot start communication with the editor I/F properly.
- Possible causes -
• Poor connection between main control board and the display editor I/F
board
•
Main control board defective
•
Display editor I/F board defective
Trouble -
shooting
SM 6-23 A172/A199
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