05/2014
2-92
DC SC2020
CHAIN 91
Version 1.1
Troubleshooting
If no problem is found, replace the following parts in sequence:
• Drum Cartridge (C) (PL 8.1)
• Xero CRUM Connector Assembly (C) (PL 8.2)
• DRIVE PWB (PL 18.2)
091-920 Drum CRUM Y Data Broken
BSD-ON:CH9.1
Detected inequality in write data and read data of CRUM of Drum Cartridge (Y).
Cause/Action
Unplug and plug the Drum Cartridge (Y) back in and check for any setup error.
Replace Drum Cartridge (Y) if there is no problem after checking. (PL 8.1)
091-921 Drum CRUM K Not In Position
BSD-ON:CH9.2
CRUM of Drum Cartridge (K) is not installed in the predetermined position (CRUM falling out).
Cause/Action
1.Unplug Drum Cartridge (K) and plug back in.
2.Wipe the joining terminal between CRUM PWB of Drum Cartridge (K) and CRUM of Xero CRUM Con-
nector Assembly (K) with a dry cloth. (When cleaning, do not use Drum cleaner, etc.)
3.Check the following:
• Disconnection, shortage or contact failure of wire between DRIVE PWB J407 and Xero CRUM
Connector Assembly (K) J108.
• Damage, contamination by foreign substances of the joining terminal between CRUM PWB of
Drum Cartridge (K) and CRUM of Xero CRUM Connector Assembly (K).
• Drum Cartridge (K) setup error.
If no problem is found, replace the following parts in sequence:
• Drum Cartridge (K) (PL 8.1)
• Xero CRUM Connector Assembly (K) (PL 8.2)
• DRIVE PWB (PL 18.2)
091-922 Drum CRUM M Data Broken
BSD-ON:CH9.1
Detected inequality in write data and read data of CRUM of Drum Cartridge (M).
Cause/Action
Unplug and plug the Drum Cartridge (M) back in and check for any setup error.
Replace Drum Cartridge (M) if there is no problem after checking. (PL 8.1)
091-923 Drum CRUM C Data Broken
BSD-ON:CH9.2
Detected inequality in write data and read data of CRUM of Drum Cartridge (C).
Cause/Action
Unplug and plug the Drum Cartridge (C) back in and check for any setup error
Replace Drum Cartridge (C) if there is no problem after checking. (PL 8.1)
091-927 Drum CRUM Y Not In Position
BSD-ON:CH9.1
CRUM of Drum Cartridge (Y) is not installed in the predetermined position (CRUM falling out).
Cause/Action
1.Unplug Drum Cartridge (Y) and plug back in.
2.Wipe the joining terminal between CRUM PWB of Drum Cartridge (Y) and CRUM of Xero CRUM Con-
nector Assembly (Y) with a dry cloth. (When cleaning, do not use Drum cleaner, etc.)
3.Check the following:
• Disconnection, shortage or contact failure of wire between DRIVE PWB J407 and Xero CRUM
Connector Assembly (Y) J105.
• Damage, contamination by foreign substances of the joining terminal between CRUM PWB of
Drum Cartridge (Y) and CRUM of Xero CRUM Connector Assembly (Y).
• Drum Cartridge (Y) setup error.
If no problem is found, replace the following parts in sequence:
• Drum Cartridge (Y) (PL 8.1)
• Xero CRUM Connector Assembly (Y) (PL 8.2)
• DRIVE PWB (PL 18.2)
091-928 Drum CRUM M Not In Position
BSD-ON:CH9.1
CRUM of Drum Cartridge (M) is not installed in the predetermined position (CRUM falling out).
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