Diagnostic information
2-63
5061
2
Check the TMC pin (B) in the yellow cartridge contact
assembly to make sure it moves freely.
Does the pin move freely?
Go to step 3
Replace the
cartridge contact
assembly. See
“Cartridge
contact
assembly
removal” on
page 4-35
.
3
Go to
“BASE SENSOR TEST” on page 3-24
, and
check the yellow TMC sensor. When you press the
TMC pin in the yellow cartridge contact assembly,
make sure it actuates the TMC switch on the developer
HVPS. When the TMC pin is pressed in, you hear a
click
when the switch actuates. Check for mechanical
interference between the contact block and the
developer HVPS.
Note: You may need to turn the printer off to hear the
click
.
Does the yellow TMC switch on the developer HVPS
board actuate properly when the TMC pin is pressed?
Replace the
cartridge.
Go to step 4
4
Check the developer HVPS board to make sure it is not
cracked or broken.
Is the developer HVPS cracked or broken?
Go to step 6
Go to step 5
5
Check the mounting of the developer HVPS. Make
sure the screws that mount the power supply are
properly tightened down and the board is positioned
and mounted correctly.
Is the developer HVPS mounted correctly?
Replace the
developer HVPS
assembly. See
“Developer
HVPS board
removal” on
page 4-39
.
If the board is
incorrectly
installed, install it
correctly. Make
sure all the
mounting screws
are tightened
down. Recheck
the printer to see
if a 942 Error is
still displayed.
6
Make sure the developer HVPS cable is correctly
installed on the developer board assembly.
Is the cable correctly installed?
Go to step 7
Correctly connect
the cable.
7
Make sure the developer HVPS cable is correctly
installed at J6 on the system board.
Is the cable properly installed?
Go to step 8
Correctly connect
the cable.
8
Check the voltage at connector J6-16 on the system
board while pressing the yellow TMC pin in the
cartridge contact assembly.
Does the voltage change when the pin is pressed?
Replace the
system board.
See
“System
board removal”
on page 4-90
.
Go to step 9
Step
Actions and questions
Yes
No
B
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...
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