08/2012
2-31
WorkCentre 5021/5019
061-321, 061-325
Status Indicator RAPs
Initial Issue
061-321  ROS Motor Fail
BSD-ON:CH6.4
The number of rotation of the ROS Motor did not come within the standard range within the 
specified time (5 s) after the ROS Motor On.
Cause/Action
1. Turn the power OFF and ON.
2. Check whether the Drum Cartridge is installed.
3. Check the ROS Motor (Output Check [061-001]) for operation failure. 
4. Check the LD +5VDC power supply of the LD PWB  J140 pin-8.
5. If no problem is found, replace the following parts in sequence:
• ROS Assembly (PL 2.1)
• ESS/MCU PWB (PL 18.1)
061-325  No SOS Fail
BSD-ON:CH6.4
After the detection of ROS Motor Ready (steady rotation), the SOS interval was detected to be 
longer than the reference value 5 times in a row.
Cause/Action
1. Turn the power OFF and ON.
2. Check whether the Drum Cartridge is installed.
3. Turn OFF the power and check the connections between the ESS/MCU PWB  J410, 
J411 and the LD PWB  J140,  J160 for open circuits, short circuits, and poor contacts.
4. If no problem is found, replace the following parts in sequence:
• ROS Assembly (PL 2.1)
• ESS/MCU PWB (PL 18.1)