Service Call
SM 6-7 M0C3/M0C4/M0C5/M0C6/M0C7
No. Type Error Name/Error Condition/Major Cause/Solution
• Defective fusing lamp
• The overheat protection mechanism started working
1. Reset the SC.
2. Replace the fusing unit.
3. Replace the drawer harness.
4. Replace the PSU.
No. Type Error Name/Error Condition/Major Cause/Solution
SC543 A High temperature error (soft)
The detected temperature stays at 235°C for 0.5 second, and this consecutively
occurs 10 times.
• Defective main board
• Defective PSU
1. Reset the SC.
2. Replace the main board.
3. Replace the PSU.
4. Replace the fusing unit.
5. Replace the drawer harness.
No. Type Error Name/Error Condition/Major Cause/Solution
SC544 A High temperature error (hard)
The detected temperature stays at 250°C for 0.2 second, and this consecutively
occurs 4 times.
• Defective main board
• Defective PSU
• Defective fusing unit
1. Reset the SC.
2. Replace the fusing unit.
3. Replace the drawer harness.
4. Replace the PSU.