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4. Replacement and Adjustment
Notes on the Main Power Switch
Push Switch
The main power button of this machine has been changed to a push-button switch (push button) from the
conventional rocker switch. The push switch has characteristics and specifications different from the
rocker switch. Care must be taken when replacing and adjusting parts.
Characteristics of the Push Switch (DC Switch)
Power is supplied to the machine even when the main power switch is turned OFF.
The push switch in this machine uses DC (direct current). Therefore, if the AC power cord is
connected to an electrical outlet, power is supplied to the controller board, the operation unit and
other modules even when the main power is turned OFF. When replacing the controller board and
the operation unit in this state, not only these boards, it will damage other electrical components.
In 100V models, only one of the AC lines for the fusing unit is shut off when you turn off the main
power; the other line carries current even when you turn off the main power switch.
So, when performing maintenance work such as replacing parts, in addition to turning off the main
power with the push switch, always unplug the AC power cord.
When you disconnect the power cord from the AC wall outlet, inside the machine there is still
residual charge.
When you disconnect the power cord from the AC wall outlet, inside the machine for a while there
is still residual charge. Therefore, if you remove boards in this state, it can cause a blown fuse or
memory failure.
• How to remove the residual charge inside the machine
After you unplug the power cord from the AC wall outlet, in order to remove the residual
charge from inside the machine, be sure to press the main power switch. Thus, the charge
remaining in the machine is released, and it is possible to remove boards.
When you reconnect the AC power cord into an AC wall outlet, the machine will start
automatically.
In order to remove the residual charge, push the main power switch while you disconnect the AC
power cord. At that time, the power ON flag inside the machine is set. Therefore, after you finish
work on the machine and reconnect the power cord to the AC, even if you do not press the main
power switch, the machine will start automatically and the moving parts will begin to move. When
working on moving parts, be careful that fingers or clothes do not get caught.
85
Содержание SP C440dn
Страница 1: ...Model Z P2 Machine Codes M257 Field Service Manual April 2015...
Страница 2: ......
Страница 30: ...1 Product Information 28...
Страница 73: ...9 Install the securing holder E 10 Reassemble the machine Tray Heater 71...
Страница 85: ...3 Preventive Maintenance Maintenance Tables See Appendices for the following information Maintenance Tables 83...
Страница 86: ...3 Preventive Maintenance 84...
Страница 92: ...5 Left cover B Right Cover 1 Open the duplex unit A 4 Replacement and Adjustment 90...
Страница 94: ...Top Cover 1 Right cover page 90 2 Rear cover page 91 3 Open the upper cover A 4 Replacement and Adjustment 92...
Страница 100: ...4 Disconnect the six harnesses A x 1 5 Release the inner right front cover A x 2 4 Replacement and Adjustment 98...
Страница 111: ...5 Turn the ITB lock lever clockwise to lock it 6 Use both hands to close the drum securing plate A Image Creation 109...
Страница 117: ...17 Release the upper cover sensor A hooks 18 Release the toner plate A x 7 19 Remove each clip A Image Creation 115...
Страница 128: ...5 Open the upper cover A 4 Replacement and Adjustment 126...
Страница 130: ...2 ITB unit cover A and the handles B 8 hooks 3 Three stays A x 2 each 4 Replacement and Adjustment 128...
Страница 131: ...4 The left stay A x 4 5 Rear holder bracket A x 2 Image Transfer 129...
Страница 132: ...6 ITB cleaning unit A 7 Pull the tension roller A as shown below 8 Remove a screw 4 Replacement and Adjustment 130...
Страница 139: ...3 Remove the two screws 4 ID sensor board bracket A x 1 Image Transfer 137...
Страница 141: ...4 Exit the SP mode Image Transfer 139...
Страница 143: ...PTR Contact Motor 1 Toner collection motor page 118 2 Interlock switch bracket A x 2 x 4 Paper Transfer 141...
Страница 146: ...2 Temperature Humidity sensor A x 1 x 1 4 Replacement and Adjustment 144...
Страница 155: ...3 Drum motor CMY A x 3 x 1 Development Motor CMY 1 Right cover page 90 2 Bracket A x 1 Drive Unit 153...
Страница 159: ...4 Release the upper harness guide A and the lower harness guide B x 4 x all x all Drive Unit 157...
Страница 176: ...12 Right stay A x 3 13 Release the fusing lamp harnesses A x 2 14 Lamp holder A x 1 4 Replacement and Adjustment 174...
Страница 177: ...15 Heating roller fusing lamp A Fusing Belt 1 Heating roller fusing lamp page 170 2 C rings and bearings A Fusing 175...
Страница 184: ...2 Thermopile base A x 2 x 1 3 Thermopile cover A hooks 4 Thermopile B 4 Replacement and Adjustment 182...
Страница 187: ...3 Bracket A x 1 4 Release the paper feed unit A x 1 Paper Feed 185...
Страница 189: ...3 Bracket A x 2 4 Registration sensor A x 1 hooks Vertical Transport Sensor 1 Paper feed unit page 184 Paper Feed 187...
Страница 195: ...2 Release the harness A x 1 3 Paper feed sensor bracket A x1 4 Paper feed sensor A x1 hooks Paper Feed 193...
Страница 198: ...5 Sensor holder A x 3 x 1 6 Disconnect the connector A 7 Tray 1 set sensor A hooks 4 Replacement and Adjustment 196...
Страница 201: ...5 Inner left upper cover page 94 6 Paper exit unit holder A x 1 Paper Exit 199...
Страница 203: ...3 Remove the bushing C x 1 4 Remove the shaft A and then remove the paper exit upper guide B Paper Exit 201...
Страница 211: ...6 Release the left arm A x 1 Duplex Unit 209...
Страница 215: ...3 Duplex lower guide plate A 4 Duplex upper guide plate A x 7 Duplex Unit 213...
Страница 219: ...5 Fusing fans page 164 6 Operation panel page 93 7 Duplex By pass motor cover A x 1 Duplex Unit 217...
Страница 220: ...8 Right and left arms A x 2 each 4 Replacement and Adjustment 218...
Страница 221: ...9 Duplex By pass motor bracket with the frame A x 6 10 Guide plate A x 4 Duplex Unit 219...
Страница 224: ...3 Guide plate A x 4 4 Slide the roller holder A in the direction of the blue arrow x 2 4 Replacement and Adjustment 222...
Страница 225: ...5 By pass feed roller A 6 Slide the roller holder A in the direction of the blue arrow Duplex Unit 223...
Страница 229: ...Electrical Components Boards Rear Cover Open A Bridge Board B Controller Board C PSU Electrical Components 227...
Страница 230: ...Controller Box Removal E HVPS CB Board Right Cover Open F BCU 4 Replacement and Adjustment 228...
Страница 239: ...6 Remove the screw and disconnect the connector 7 Remove the seven screws Electrical Components 237...
Страница 245: ...5 Disconnect the connector 6 Disconnect the six connectors x 1 Electrical Components 243...
Страница 254: ...4 Replacement and Adjustment 252...
Страница 421: ...Engine SP Mode Tables SP4000 There are no Group 4 SP modes for this machine Engine SP Mode Tables SP4000 419...
Страница 473: ...5 992 025 SDK J Application Info CTL Execute 5 992 026 Printer SP mode CTL Execute Engine SP Mode Tables SP5000 471...
Страница 474: ...Engine SP Mode Tables SP6000 There are no Group 6 SP modes for this machine 5 System Maintenance Reference 472...
Страница 564: ...5 System Maintenance Reference 562...
Страница 637: ...Model Z P2 Machine Codes M257 Appendices February 2015...
Страница 638: ......
Страница 640: ...2...
Страница 648: ...1 Appendix Specifications 10...
Страница 652: ...MEMO 14...
Страница 653: ...MEMO 15...
Страница 654: ...MEMO 16 EN...