The tray 1 upper limit sensor (PS22) is not blocked even after the lapse of a given period of time after the lifting motion has been started. Description: Tray 1 feeder up/down abnormality.2 Check the connector of M122 for proper drive coupling and correct as necessary. Remedy: 1 Check the connector between M122-PCCB CN9 for proper connection and correct as necessary.Description: Tray 4 vertical transport motor turning at abnormal timing.3 M121 operation check PCCB CN9-5 (CW/CCW) PC-210 6-K. 2 Check the connector of M121 for proper drive coupling and correct as necessary. Remedy: 1 Check the connector between M121-PCCB CN9 for proper connection and correct as necessary.Description: Tray 4 paper feed motor turning at abnormal timing.2 Check the connector of M132 for proper drive coupling and correct as necessary. When PC-410 is installed: 1 Check the connector between M132-PCCB CN5 for proper connection and correct as necessary. 2 Check the connector of M112 for proper drive coupling and correct as necessary. Remedy: When PC-110 or PC-210 is installed: 1 Check the connector between M112-PCCB CN5 for proper connection and correct as necessary.Description: Tray 3/LCT vertical transport motor turning at abnormal timing.3 M131 operation check PCCB CN5-5 (CW/CCW) PC-410 5-J. 2 Check the connector of M131 for proper drive coupling and correct as necessary. When PC-410 is installed: 1 Check the connector between M131-PCCB CN5 for proper connection and correct as necessary. 2 Check the connector of M111 for proper drive coupling and correct as necessary. Remedy: When PC-110 or PC-210 is installed: 1 Check the connector between M111-PCCB CN5 for proper connection and correct as necessary.The motor lock signal remains LOW for a predetermined continuous period of time while the motor remains stationary.The motor lock signal remains HIGH for a predetermined continuous period of time while the motor remains stationary.Description: Tray 3/LCT paper feed motor turning at abnormal timing.or more after connect the power cord, and turn ON the main power switch. Remedy: 1 Turn OFF the main power switch, disconnect and then connect the power cord.When the printer control board (PRCB) is receiving data, a communication error is detected. Description: Paper feed communication error.

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