Code :

Code: U6 21
Description: LCC transport motor operation trouble
Causes: Motor lock Motor rpm abnormality Motor overcurrent LCC control PWB trouble
Remedy: Check the transport motor operation with SIM 4-3.

Code: U6 22
Description: LCC 24V power abnormality. DC24V not supplied to LCC
Causes: Connector harness improper connection or disconnection LCC control PWB trouble Power unit trouble
Remedy: Check the connector and harness of power line. Check 24V power in the power unit and the LCC control PWB.

Code: U6 50
Description: Non-support trouble in automatic detection of option connection (Desk unit). In automatic detection of option connection, a non-support desk unit is detected.
Causes: A non-support desk unit is connected to the copier.
Remedy: Check the desk unit.

Code: U6 51
Description: Non-support trouble in automatic detection of option connection (LCC unit). In automatic detection of option connection, a non-support LCC unit is detected.
Causes: A non-support LCC unit is connected to the copier.
Remedy: Check the LCC unit.

Code: U7 00
Description: RIC communication trouble. Communication error with RIC Error in communication line test after turning on the power or exiting from SIM.
Causes: Improper connection or disconnection of connector and harness RIC control PWB trouble Control PWB (ICU) trouble Malfunction caused by noises
Remedy: Turn off/on the power to cancel the trouble.

Code: U9 00
Description: Operation control communication trouble (ICU detection). Communication setup error, framing/parity/protocol error
Causes: Slave unit PWB connector improper connection Slave unit PWB – ICU PWB harness trouble Connector pin breakage of the motor PWB of the slave unit PWB Slave unit ROM trouble. no ROM, ROM reverse insertion, ROM pin breakage
Remedy: Connect the connector of the slave unit PWB and the ICU PWB. Check the connection and the harness. Check the grounding of the copier. Check the ROM of the slave unit PWB.

Code: U9 90
Description: Operation control communication trouble (OPE detection). Communication setup error/framing/parity/protocol error
Causes: Slave unit PWB connector improper connection Slave unit PWB – ICU PWB harness trouble Slave unit PWB mother board connector pin breakage
Remedy: Check the slave unit PWB and the ICU PWB connector connection. Check the copier earth.