
2.
DC switch board [A] ( x 1,
x 1)
NVRAM Replacement Procedure
There are three NVRAMs. Two are on the controller board, and one is on the BCU.
• Always touch a metal surface before handling an NVRAM. Static electricity from your hands can
damage an NVRAM.
NVRAM on the BCU
1.
Make sure that you have the SMC report (factory settings). This report comes with the
machine.
2.
Output the SMC data (SP5-990-001) if possible.
3.
Turn the main switch off.
4.
Install an SD card into SD card slot 2. Then turn the main power on.
5.
Copy the NVRAM data to an SD card (SP5-824-001) if possible.
6.
Turn off the main switch. Then unplug the power cord.
7.
Replace the NVRAM on the BCU and reassemble the machine.
8.
Plug in the power cord. Then turn the main switch on.
9.
SC195 occurs.
10.
Specify the serial number and destination code of the machine.
• Contact your supervisor for details on how to enter the serial number and destination code.
Electrical Components
245
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...