Remedy: Does the exposure lamp light? Yes • Check the connectors on the CCD and SLG boards for disconnection. • Check the shading plate on the rear of the original scale for dirt. • Check the CCD board for breaks and short-circuits. • Check the SLG board for breaks and short-circuits. • Replace the lens unit. • Replace the SLG board. No • Check the lamp connectors for disconnection. • Check the thermostat to see if it has blown. • Check electrical continuity of the lamp. • Check SLG board connector pins J9-22, 23, 24, 25 and 26 for disconnection and the harness for breaks and short-circuits. • Check the SLG board for breaks and short-circuits. • Replace the SLG board. • Replace the lamp regulator
Code: C27
Description: (Home switch does not turn OFF within a fixed time) Carriage initialization error
Remedy: The carriage moves only slightly in the feed direction, or the carriage stays is at a position other than the home position and does not move. Yes Check the circuits on the SLG and SDV boards for troubles. No • Check the connector pins for disconnection and the harness for breaks and short-circuits. • Check the SDV board for breaks and short-circuits. • Check the SLG board for breaks and short-circuits. • Replace the SDV board. • Replace the SLG board.
Code: C28
Description: (Home switch does not turn ON within a fixed time) Carriage initialization error
Remedy: Is a loud sound emitted after the carriage bumps into the home position? Yes Cause: The home switch does not turn ON. • Make sure that the switch connector is connected. • Check the circuits on the SLG and SDV boards for troubles. No Cause: The carriage is located at the home position and does not move. • Check the connector pins for disconnection and the harness for breaks and short-circuits. • Check the SDV board for breaks and short-circuits. • Check the SLG board for breaks and short-circuits. • Replace the SDV board. • Replace the SLG board.
Code: C29
Description: Exposure lamp disconnection detected
Remedy: Does the exposure lamp light? Yes • Check the connectors on the CCD and SLG boards for disconnection. • Check the shading plate on the rear of the original scale for dirt. • Check the CCD board for breaks and short-circuits. • Check the SLG board for breaks and short-circuits. • Replace the lens unit. • Replace the SLG board. No • Check the lamp connectors for disconnection. • Check the thermostat to see if it has blown. • Check electrical continuity of the lamp. • Check SLG board connector pins J9-22, 23, 24, 25 and 26 for disconnection and the harness for breaks and short-circuits. • Check the SLG board for breaks and short-circuits. • Replace the SLG board. • Replace the lamp regulator
Code: C36
Description: Main charger wire cleaning operation abnormal
Remedy: (1) Check the main charger. • Is the main charger disconnected? (2) Check the cleaning motor. • Is the motor operating? (3) Replace the LGC board.
Code: C37
Description: Transfer belt operation abnormal
Remedy: (1) Check the transfer belt. • Are the connectors disconnected? • Are the contact switches and limit switches normal? (2) Replace the LGC board.