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No.
Type
Details (Symptom, Possible Cause, Troubleshooting)
547
-01
D
Zero cross error (Fusing relay short)
• The zero cross signal is detected three times even though the heater relay is
off when turning on the main power.
• The zero cross signal is not detected for 3 seconds even though the heater
relay is on after turning on the main power or closing the front door.
• The detection error occurs twice or more in the 11 zero cross signal
detections. This error is defined when the detected zero cross signal is less
than 45.
• Defective fusing lamp relay
• Defective fusing lamp relay circuit
1. Replace the PSU.
2. Replace the BCU.
No.
Type
Details (Symptom, Possible Cause, Troubleshooting)
547
-02
D
Zero cross error (Fusing relay open)
• The zero cross signal is detected three times even though the heater relay is
off when turning on the main power.
• The zero cross signal is not detected for 2 seconds even though the heater
relay is on after turning on the main power or closing the front door.
• The detection error occurs twice or more in the 11 zero cross signal
detections. This error is defined when the detected zero cross signal is less
than 45.
• Defective fusing lamp relay
• Defective fusing lamp relay circuit
• Short 24VS fuse
1. Replace the 24VS fuse (FU3/FU4).
2. Replace the PSU.
3. Replace the BCU.
SC Tables
589
Summary of Contents for SP C440dn
Page 1: ...Model Z P2 Machine Codes M257 Field Service Manual April 2015...
Page 2: ......
Page 30: ...1 Product Information 28...
Page 73: ...9 Install the securing holder E 10 Reassemble the machine Tray Heater 71...
Page 86: ...3 Preventive Maintenance 84...
Page 92: ...5 Left cover B Right Cover 1 Open the duplex unit A 4 Replacement and Adjustment 90...
Page 128: ...5 Open the upper cover A 4 Replacement and Adjustment 126...
Page 131: ...4 The left stay A x 4 5 Rear holder bracket A x 2 Image Transfer 129...
Page 139: ...3 Remove the two screws 4 ID sensor board bracket A x 1 Image Transfer 137...
Page 141: ...4 Exit the SP mode Image Transfer 139...
Page 146: ...2 Temperature Humidity sensor A x 1 x 1 4 Replacement and Adjustment 144...
Page 187: ...3 Bracket A x 1 4 Release the paper feed unit A x 1 Paper Feed 185...
Page 201: ...5 Inner left upper cover page 94 6 Paper exit unit holder A x 1 Paper Exit 199...
Page 211: ...6 Release the left arm A x 1 Duplex Unit 209...
Page 215: ...3 Duplex lower guide plate A 4 Duplex upper guide plate A x 7 Duplex Unit 213...
Page 220: ...8 Right and left arms A x 2 each 4 Replacement and Adjustment 218...
Page 221: ...9 Duplex By pass motor bracket with the frame A x 6 10 Guide plate A x 4 Duplex Unit 219...
Page 230: ...Controller Box Removal E HVPS CB Board Right Cover Open F BCU 4 Replacement and Adjustment 228...
Page 245: ...5 Disconnect the connector 6 Disconnect the six connectors x 1 Electrical Components 243...
Page 254: ...4 Replacement and Adjustment 252...
Page 564: ...5 System Maintenance Reference 562...
Page 637: ...Model Z P2 Machine Codes M257 Appendices February 2015...
Page 638: ......
Page 640: ...2...
Page 648: ...1 Appendix Specifications 10...
Page 652: ...MEMO 14...
Page 653: ...MEMO 15...
Page 654: ...MEMO 16 EN...