3 PS4 I/O check, sensor check FSCB CN20-18 (ON) FS-526 L-14 4 PS7 I/O check, sensor check FSCB CN20-15 (ON) FS-526 L-14 5 M5 operation check FSCB CN22-1 to 11 FS-526 K-5 6 Change M5 - 7 FSCB ICP1 conduction check - 8 Change FSCB 2 Check the connector of M5 for proper drive coupling, and correct as necessary. Causes: Main tray lift motor (M5) Main tray top surface sensor (PS4) Staple paper exit top surface sensor (PS7) FS control board (FSCB).The staple paper exit top surface sensor (PS7) is turned neither ON nor OFF even after the set period of time has elapsed while the main tray lift motor (M5) is energized.The main tray top surface sensor (PS4) is turned neither ON nor OFF even after the set period of time has elapsed while the main tray lift motor (M5) is energized.Description: Main tray Up/Down motor malfunction.
or more, and turn ON the main power switch. Turn OFF the main power switch, wait for 10 sec. Remedy: 1 Disconnect and then connect the power cord.
Causes: SD drive board (SDDB) FS control board (FSCB).When a communication error is detected between the FS control board (FSCB) and the SD drive board (SDDB).