Gestetner B147, Руководство по обслуживанию

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SC TABLE
SM 4-33 B147/B149/B190
SC No. Item Definition Possible Cause
Related
SCs
Troubleshooting Procedure Type
SC 686 BCU-IPU
communication
error
• After the machine is
powered on or recovering
from the power save mode,
timeout occurs during BCU
communication.
•
The break signal is received
after the communication is
normally established with
the BCU.
• Timeout occurs while the
communication with the
BCU is retried after a
communication error.
• Board connector
between BCU and
controller loose
• Board connector
between controller
and motherboard
loose
• Board connector
between motherboard
and IPU loose
•
BCU board defective
•
IPU board defective
• Controller board
defective
• Motherboard
defective
1. Turn the main switch off and on.
2. Check the cable connection between
the board connector and BCU.
3. Check the cable connection between
controller and motherboard.
4. Check the cable connection between
motherboard and IPU.
5. Replace the BCU board.
6. Replace the IPU board.
7. Replace the controller board.
8. Replace the motherboard.
D
SC 687 Memory
address
command error
The BCU does not receive a
memory address command
from the controller 60 seconds
after paper is in the position for
registration. • Loose connection
•
Defective controller
•
Defective BCU
1. Turn the main switch off and on.
2. Check if the controller is firmly
connected to the BCU.
3. Replace the controller.
4. Replace the BCU.
D
SC
690-
001 GAVD I2C
communica-tion
error
690-001: Y
690-002: M
690-003: C
690-004: K •
The I2C bus device ID is not
identified during
initialization.
• A device-status error occurs
during I2C bus
communication.
• The I2C bus communication
is not established due to an
error other than a buffer
shortage.
•
Loose connection
• Defective BCU
• Defective LD
controller board
1. Turn the main switch off and on.
2. Check the cable connection.
3. Replace the laser optics housing unit.
4. Replace the BCU board. D