Diagnostic information
2-77
5061
DC power service check
The machine is partially operative, a motor turns, display is on, or the Power On LED may be on or off.
Step
Actions and questions
Yes
No
1
Does the printer
beep
5 times and the operator panel
display all diamonds?
Go to
“Operator
panel LCD/
status LED/
buttons service
check” on
page 2-90
.
Go to step 2
2
DC power to system board—Turn the power off, and
disconnect the LVPS cable to J18 on the system
board. Turn the power on, and check the following
voltages on the LVPS cable:
Note
: All voltages are approximate values.
Are the voltages correct?
Go to step 3
Replace the
LVPS assembly.
See
“LVPS
assembly
removal” on
page 4-53
.
3
Unplug all cables from the system board, except
JOPP1, J18, and J20. See
“System board” on
page 5-7
.
Does the printer power up and display a message?
Go to step 4
Replace the
system board.
See
“System
board removal”
on page 4-90
.
4
Turn off the printer, and plug in the cable for the
component that is related to the error presented. For
example, for the 109.xx Service Printhead error, plug in
the black printhead JMMK1 and JMK1. Use connector
locations on
“System board” on page 5-7
.
Repeat this step until the original DC power problem
occurs.
Does the DC power problem occur?
Check the cable
and component
that was last
connected to
system board for
short.
If printer comes
to Ready,
connect the
remaining cables
and print.
J18-1
+3.3 V dc
J18-2
+3.3 V dc
J18-3
+5 V dc
J18-4
+5 V dc
J18-5
+24 V dc
J18-6
+24 V dc
J18-7
+24 V dc
J18-8
+3.3V dc
J18-9
Ground
J18-10
Ground
J18-11
Ground
J18-12
Ground
J18-13
Ground
J18-14
Ground
J18-15
Ground
J18-16
Ground
Summary of Contents for C77X
Page 15: ...Notices and safety information xv 5061...
Page 16: ...xvi Service Manual 5061...
Page 22: ...xxii Service Manual 5061...
Page 44: ...1 22 Service Manual 5061...
Page 182: ...2 138 Service Manual 5061...
Page 293: ...Repair information 4 61 5061 6 Release the MPF latch F and remove the MPF...
Page 325: ...Repair information 4 93 5061 3 Remove all connectors C 4 Remove the transfer HVPS board...
Page 338: ...4 106 Service Manual 5061...
Page 339: ...Connector locations 5 1 5061 5 Connector locations Locations Printer boards...
Page 340: ...5 2 Service Manual 5061 Printer motors...
Page 341: ...Connector locations 5 3 5061 Printer sensors...
Page 342: ...5 4 Service Manual 5061 Cartridge contact assembly pin locations cyan magenta and yellow...
Page 343: ...Connector locations 5 5 5061 Cartridge contact assembly pin locations black...
Page 345: ...Connector locations 5 7 5061 Connectors System board...
Page 358: ...5 20 Service Manual 5061 Transfer high voltage power supply HVPS...
Page 368: ...5 30 Service Manual 5061...
Page 372: ...6 4 Service Manual 5061...
Page 380: ...7 8 Service Manual 5061 Assembly 3 1 Fuser web oiler 1 3 2...
Page 402: ...7 30 Service Manual 5061 Assembly 22 Electronics 3 3 3 2 1...
Page 404: ...7 32 Service Manual 5061 Assembly 22 1 Electronics 3 5 4 8 1 9 10 2 2 6 6 6 7 6 6...
Page 408: ...7 36 Service Manual 5061 Assembly 23 Electronics cabling interconnections 1...
Page 410: ...7 38 Service Manual 5061 Assembly 24 Electronics cabling interconnections 2...
Page 420: ...7 48 Service Manual 5061 Assembly 28 1 5 Bin mailbox 3 3 3 3 11 7 13 5 9 2 10 6 4 12 8 14 1 15...
Page 422: ...7 50 Service Manual 5061 Assembly 29 500 Sheet drawer option 3 11 7 5 9 2 10 6 4 8 1...
Page 438: ...7 66 Service Manual 5061 Assembly 33 Envelope option 2 1...
Page 442: ...7 70 Service Manual 5061 Assembly 36 Options...
Page 444: ...7 72 Service Manual 5061...
Page 450: ...B 2 Service Manual 5061 Print Quality Pages Page 1 total of five...
Page 451: ...Appendix B Print quality samples B 3 5061 Print Quality Pages Page 2 total of five...
Page 452: ...B 4 Service Manual 5061 Print Quality Pages Page 3 total of five...
Page 453: ...Appendix B Print quality samples B 5 5061 Print Quality Pages Page 4 total of five...
Page 458: ...B 10 Service Manual 5061...
Page 466: ...I 8 Service Manual 5061...
Page 476: ...I 18 Service Manual 5061...
Page 478: ......
Page 479: ......
Page 480: ......