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Service Manual
5060-00
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4
Make sure the communications cable is connected
properly to CN3 on the LVPS Relay board.
Is the cable installed correctly?
Note
: The relay on the relay board is connected to +5 V
dc from the printer through the communications cable.
When the printer is powered on, +5 V dc is sent to the
finisher relay board relay coil which energizes the relay
and connects primary AC line voltage to the LVPS.
Go to step 5
Install the cable
correctly.
5
Check the resistance of the relay coil by measuring
between CN3-1 and CN3-2 on the relay board. The
resistance measures between 45 ohms and 50 ohms.
Is the resistance correct?
Replace the
communication
cable.
Replace the relay
board/LVPS
assembly.
6
Check the voltage on the output options Autoconnect
connector Pin 2 located on the top right rear of the
printer. The voltage measures approxi5 V dc.
Is the voltage correct?
Go to step 7
Go to step 10
7
Check the AC line voltage between CN2-1 and CN2-3
on the relay board. The line voltage should be within
specifications for the AC power source the printer is
connected to.
Is there line voltage at CN2?
Replace the LVPS
assembly.
Go to step 8
8
Check the AC line voltage between CN1-1 and CN1-5
on the relay board. The line voltage should be within
specifications for the AC power source the printer is
connected to.
Is there line voltage at CN1?
Replace the relay
board assembly.
Go to step 9
9
Check continuity of the AC line cord.
Is there continuity?
Go to step 10
Replace the line
cord
10
Check the voltage at J7-5 on the engine board. The
voltage measures approxi5 V dc.
Is the voltage correct?
Replace the top
options cable
Replace the engine
board
Step
Action and questions
Yes
No
Summary of Contents for 13P0195 - C 750dn Color Laser Printer
Page 14: ...xiv Service Manual 5060 00x ...
Page 15: ...Laser notice xv 5060 00x ...
Page 16: ...xvi Service Manual 5060 00x ...
Page 34: ...1 14 Service Manual 5060 00x ...
Page 115: ...Diagnostic information 2 81 5060 00x Printer configuration diagrams for 24x paper jams ...
Page 237: ...Repair information 4 19 5060 00x 9 Remove the MPF swing arm assembly E E ...
Page 312: ...4 94 Service Manual 5060 00x ...
Page 313: ...Connector locations 5 1 5060 00x 5 Connector locations Locations Printer boards ...
Page 315: ...Connector locations 5 3 5060 00x Printer sensors ...
Page 316: ...5 4 Service Manual 5060 00x Cartridge contact assembly pin locations ...
Page 317: ...Connector locations 5 5 5060 00x Engine board cabling ...
Page 318: ...5 6 Service Manual 5060 00x RIP board cabling ...
Page 344: ...5 32 Service Manual 5060 00x HCOF system board ...
Page 350: ...7 2 Service Manual 5060 00x Assembly 1 Covers ...
Page 352: ...7 4 Service Manual 5060 00x Assembly 1 1 Covers ...
Page 354: ...7 6 Service Manual 5060 00x Assembly 2 Cartridge mounting ...
Page 356: ...7 8 Service Manual 5060 00x Assembly 3 Fuser 3 2 1 ...
Page 358: ...7 10 Service Manual 5060 00x Assembly 3 1 Fuser web oiler 1 2 3 ...
Page 368: ...7 20 Service Manual 5060 00x Assembly 12 Multipurpose feeder MPF ...
Page 370: ...7 22 Service Manual 5060 00x Assembly 13 500 sheet integrated tray ...
Page 374: ...7 26 Service Manual 5060 00x Assembly 16 ITU drive assembly 2 4 1 5 3 5 ...
Page 376: ...7 28 Service Manual 5060 00x Assembly 17 ITU loading ...
Page 380: ...7 32 Service Manual 5060 00x Assembly 20 Cartridge drive assembly ...
Page 382: ...7 34 Service Manual 5060 00x Assembly 21 Electronics ...
Page 384: ...7 36 Service Manual 5060 00x Assembly 21 1 Electronics ...
Page 388: ...7 40 Service Manual 5060 00x Assembly 21 4 Electronics ...
Page 390: ...7 42 Service Manual 5060 00x Assembly 22 Electronic cabling engine board ...
Page 392: ...7 44 Service Manual 5060 00x Assembly 23 Electronic cabling RIP board ...
Page 396: ...7 48 Service Manual 5060 00x Assembly 26 Output expander ...
Page 398: ...7 50 Service Manual 5060 00x Assembly 26 1 Output expander ...
Page 400: ...7 52 Service Manual 5060 00x Assembly 27 5 bin mailbox ...
Page 402: ...7 54 Service Manual 5060 00x Assembly 27 1 5 bin mailbox ...
Page 404: ...7 56 Service Manual 5060 00x Assembly 28 500 sheet drawer option ...
Page 406: ...7 58 Service Manual 5060 00x Assembly 28 1 500 sheet tray option ...
Page 408: ...7 60 Service Manual 5060 00x Assembly 29 Duplex option ...
Page 410: ...7 62 Service Manual 5060 00x Assembly 29 1 Duplex option ...
Page 412: ...7 64 Service Manual 5060 00x Assembly 30 High capacity input tray HCIT ...
Page 414: ...7 66 Service Manual 5060 00x Assembly 30 1 High capacity input tray HCIT ...
Page 416: ...7 68 Service Manual 5060 00x Assembly 31 High capacity output finisher HCOF ...
Page 418: ...7 70 Service Manual 5060 00x Assembly 31 1 High capacity output finisher ...
Page 420: ...7 72 Service Manual 5060 00x Assembly 31 2 High capacity output finisher ...
Page 422: ...Service Manual 5060 0xx Assembly 32 High capacity output finisher cables ...
Page 426: ...7 78 Service Manual 5060 00x ...
Page 456: ...A 30 Service Manual 5060 00x ...
Page 458: ...B 2 Service Manual 5060 00x Print Menus Page two of two ...
Page 460: ...B 4 Service Manual 5060 00x Print Quality Pages Page 1 total of five ...
Page 461: ...Appendix B Print quality samples B 5 5060 00x Print Quality Pages Page 2 total of five ...
Page 462: ...B 6 Service Manual 5060 00x Print Quality Pages Page 3 total of five ...
Page 463: ...Appendix B Print quality samples B 7 5060 00x Print Quality Pages Page 4 total of five ...
Page 464: ...B 8 Service Manual 5060 00x Registration Quick Test ...
Page 466: ...B 10 Service Manual 5060 00x Printhead alignment test page yellow two of three ...
Page 468: ...B 12 Service Manual 5060 00x Print Line Len page ...
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