Service manual

SC603: Communication error between SCU and printer main control
board
Type: 3
- Description -
The SCU detects a communication error in the printer module during
communication with the main control board based on the SCSI
connection protocol.
- Detection Timing -
Always
- Possible Causes -
• Main control board
• SCU (System Control Unit)
• SCSI cable
SP-Log: 7-402-6
SC604: Communication error between scanner and IDU
Type: 2
- Description -
The scanner IPU board detects a communication error in the IDU
during communication with the IDU based on the IDU connection
protocol.
- Detection Timing -
When the power switch is turned on
When the IDU is active
- Possible Causes -
• Scanner IPU
• IDU
SP-Log: 7-402-6
SC605: Printer internal communication error
Type: 2
- Description -
(1) When the Fgate signal (LD on/off control) is not sent.
(2) When the sequence reaches an impossible value.
(3) When the Fgate OFF command is received for a process that has
not started
- Detection Timing -
Always
- Possible Causes -
• Main control board
SP-Log: 7-402-6
Trouble-
shooting
SERVICE CALL CONDITIONS
SM 6-23 A166/A187/A189
CÓPIA NÃO CONTROLADA
CÓPIA NÃO CONTROLADA