Diagnostic information
2-91
5061
7
System board—Measure the voltage at connector
JOPP1-2 on the
“System board” on page 5-8
. The
voltage measures approxi5 V dc.
Is the voltage correct?
Replace the
operator panel
assembly. See
“Operator panel
assembly
removal” on
page 4-68
.
Go to step 8
8
Operator panel cable (operator panel connection)—
Make sure that the operator panel cable is seated
correctly in the connector on the operator panel board.
Is the cable seated correctly?
Go to step 9
Seat the cable
correctly.
9
Operator panel cable—Check continuity of the
operator panel cable.
Is there continuity?
Replace the
system board.
See
“System
board removal”
on page 4-90
.
Go to
“Operator
panel assembly
removal” on
page 4-68
, and
replace the
operator panel
cable.
10
System board—A poor ground connection between
pin JOPP1-4 on the operator panel board connector
can cause this symptom. Check for continuity between
pin JOPP1-4 and ground on the board. Go to
“System
board” on page 5-8
.
Is there continuity?
Go to step 11
Replace the
system board.
See
“System
board removal”
on page 4-90
.
11
Operator panel cable—Check continuity of the
operator panel cable.
Is there continuity?
Replace the
operator panel
assembly. See
“Operator panel
assembly
removal” on
page 4-68
.
Go to
“Operator
panel assembly
removal” on
page 4-68
and
replace the
operator panel
cable.
12
Operator panel assembly—Does the operator panel
display all diamonds, with the power on/status LED on
and five beeps?
Go to step 13
Contact your next
level of support.
13
Voltage checks at system board connector JOPP1—
Go to
“System board” on page 5-8
. Check the
voltages on connector JOPP1 as shown:
Are the voltages correct?
Replace the
operator panel
assembly. See
“Operator panel
assembly
removal” on
page 4-68
.
Go to step 14
14
Operator panel cable—Check continuity of the
operator panel cable.
Is there continuity?
Replace the
operator panel
assembly. See
“Operator panel
assembly
removal” on
page 4-68
.
Go to
“Operator
panel assembly
removal” on
page 4-68
, and
replace the
operator panel
cable.
Step
Actions and questions
Yes
No
Connector
pin
Voltage (display
static)
Voltage (display active—LCD
Test running)
JOPP1-1
+5 V dc
Voltage varies 1.0 to 2.0 V dc
JOPP1-2
+5 V dc
+5 V dc
JOPP1-3
+5 V dc
Voltage varies 1.0 to 2.4 V dc
JOPP1-4
Ground
Ground
JOPP1-5
+5 V dc
+5 V dc
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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