Service Call 501-582
D255/D256/M281/M282 6-44 SM
6.6.3 SC500 (ENGINE: PAPER TRANSPORT 3: PAPER FEED,
DUPLEX, TRANSPORT, FUSING)
SC No. Type Error Name/Error Condition/Major Cause/Solution
SC547-00 D Zero Cross Signal Error
While fusing lamp ON/OFF control is performed, the zero cross
signal is not input within 2 seconds consecutively.
 Fusing unit defective
 PSU defective
 IOB defective
 Fusing unit defective
1. Reconnect the following connectors.
 PSU – IOB connector
2. If the connector is broken, shorted, or grounded,
replace the connector.
 PSU defective
Replace the PSU.
 IOB defective
Replace the IOB.
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