Samsung ML-3471ND/XAX - LSU Error

Service Manual
Reference Information
7-16
Samsung Electronics
7.6.11 LSU Error
: The ERROR and Online LED are blinking together
YES
No
YES
No
Check how the LED is diplayed
LSU Error on the pannel?
Try to reboot the printer
Is the same error
message on the pannel?
Turn off the Printer.
Replace LSU
Try to do print job
Is the same error
message on the pannel ?
Turn off the Printer.
Replace LSU