Ricoh MP 2014AD - Page 225

SC Code Descriptions
SM 6-27 D245/D246/D247
Troubleshooting
SC No. Level Error Name/Error Condition/Major Cause/Solution
547-03 B Zero cross error (low-frequency error)
When low frequency is detected once, the SC557 is determined.
When low frequency is detected twice or more, this SC is
issued.
 Fusing relay defective (contact soldering, contact open)
 Drive circuit of the fusing relay defective
 PSU fuse (24 VS) damaged
 Frequency instability of input power line
 Replace the fusing relay.
 Replace the fuse of the PSU.
SC No. Level Error Name/Error Condition/Major Cause/Solution
549-01 B Temperature lowering detection
When the thermistor (center) detects 75°C lower than the target
temperature of each paper type for 60 seconds continuously
after the registration roller has started to rotate, this SC is
issued.
 Heater damaged during paper feeding
 Heater not connected correctly.
 Reconnect the heater.
 Replace the heater.