Service manual

SC990: I/O control board 1 abnormal
Type: 2
- Description -
This SC is displayed when a serial/parallel I/O error is detected in the
I/O control board 1 for a successive five times.
- Detection Timing -
Always
- Possible Causes -
• I/O control board 1
• Corona unit setting error
• Connector/harness
• Main control board
SP-Log: 7-402-9
SC991: I/O control board 2 abnormal
Type: 2
- Description -
This SC is displayed when a serial/parallel I/O error is detected in the
I/O control board 2 for a successive five times.
- Detection Timing -
Always
- Possible Causes -
• I/O control board 2
• Corona unit setting error
• Connector/harness
• Main control board
SP-Log: 7-402-9
Trouble-
shooting
SERVICE CALL CONDITIONS
SM 6-33 A166/A187/A189
CÓPIA NÃO CONTROLADA
CÓPIA NÃO CONTROLADA