2-90
Service Manual
5061
Operator panel LCD/status LED/buttons service check
Use this service check to check both the operation of the panel buttons and to test the LCD display for correct
operation.
•
Replace the operator panel assembly if the LCD display functions normally, but the LED does not come
on.
•
If one or more of the operator panel buttons do not operate correctly, go to “Step A.”
If any of the following symptoms occur, go to
“Step B” on page 2-101
.
•
Operator panel LCD is blank/power on/status LED off
•
Operator panel LCD is blank/power on/status LED on
•
Operator panel LCD displays all diamonds/5 beeps/power on/status LED on
Step A
Step B
Note:
Make sure the operator panel cable is seated firmly in J1 on the system board before proceeding with this
step.
Step
Actions and questions
Yes
No
1
Buttons Test—Perform the
“Button Test” on
page 3-15
.
Do any or all of the buttons fail to operate correctly?
Note
: If all the buttons fail to operate correctly, the LCD
display is blank, power on status LED is on, and the
printer beeps 5 times, go step B.
Replace the
operator panel
assembly. See
“Operator panel
assembly
removal” on
page 4-68
.
Test passes. No
problem found.
Step
Actions and questions
Yes
No
1
LCD Test—Perform the
“LCD Test” on page 3-15
.
Can you run the test?
Go to step 2
Go to step 4
2
LCD Test—Does the test pass?
Problem resolved
Go to step 3
3
Operator panel—Is the operator panel operating
correctly except for a few pixels missing or broken?
Replace the
operator panel
assembly. see
“Operator panel
assembly
removal” on
page 4-68
.
Go to step 4
4
Operator panel assembly—Is the operator panel
assembly completely blank and the power on status
LED off?
Go to step 6
Go to step 5
5
Operator panel assembly—Is the operator panel
assembly completely blank and the power on status
LED on?
Go to step 10
Go to step 12
6
Does the printer
beep
5 times?
Go to step 7
Replace the
operator panel
assembly. See
“Operator panel
assembly
removal” on
page 4-68
.
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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