The tray upper limit sensor /Lw (PS209) or tray lower limit sensor /Lw (PS210) are not turned ON even after the set period of time has elapsed after the tray lift motor /Lw (M202) is energized.Description: Sheet feeder up/down drive failure (lower).3 M25 operation check SDDB PJ4-1 to 11 SD-509 B-3 4 Change M25 - 5 Change SDDB - 6 Change FSCB 2 Check the connector of M25 for proper drive coupling, and correct as necessary. When FS-527+SD-509 is installed: 1 Check the motor and sensor connectors for proper connection, and correct as necessary. 3 M33 operation check SDDB CN409-1 to 11 SD-508 K-5 4 Change M33 - 5 SDDB ICP5 conduction check - 6 Change SDDB - 7 Change FSCB. 2 Check the connector of M33 for proper drive coupling, and correct as necessary.

Remedy: When FS-526+SD-508 is installed: 1 Check the motor and sensor connectors for proper connection, and correct as necessary.When FS-527+SD-509 is installed: Center fold roller motor (M25) SD drive board (SDDB) FS control board (FSCB) Causes: When FS-526+SD-508 is installed: Transport motor (M33) SD drive board (SDDB) FS control board (FSCB).The center fold roller motor (M25) does not reach the specified speed even after the set period of time has elapsed after it starts to operate.

The transport motor (M33) does not reach the specified speed even after the set period of time has elapsed after it starts to operate.

Description: Center-staple transfer motor malfunction.

Bizhub c452 adjust tray