Oce 3121 Technical & Service Manual page 505

Delay at the pre-registration sensor PS5
A delay will be signalled if the paper does not reach the sensor PS5 within a
specified period of time after the clutch CL2 has energised.
Delay at the pre-registration sensor PS5
A delay will be signalled if the paper does not reach the sensor PS5 within a
specified period of time after the clutch CL3 has energised.
Timing for delay at the pre-registration roller
Delay at the fuser sensor PS7
A delay will be signalled if the paper does not reach the sensor PS7 within a
specified period of time after the paper passes the clutch CL1.
Timing for delay at the fuser
524 TSM Océ 3121 Functional description