Diagnostic Information
2-79
4520-xxx
Operator Panel Service Check
Operator Panel Buttons Service Check
Note: Before continuing with this service check do the
“Button Test”
on page 3-11
in the diagnostic aids chapter.
Operator Panel Display Service Check
Service Tip: The printer has detected a problem with the engine
board, operator panel cable or operator panel assembly if POST
does not complete and the printer emits 5 beeps and stops in a
continuous pattern until the printer is turned off. The operator panel
cable is an individual cable on some printers and a combination
cable assembly with the cover switch cable on later models.
Note: If the operator panel is operating properly except for a Pel or
a few Pels missing or broken, run the
“LCD Test” on page 3-11
from the
hardware tests before continuing with this diagnostic service check.
FRU
Action
1
Operator Panel Assembly
If any button fails the Button Test,
replace the operator panel assembly.
2
Engine Board
(No buttons work)
Check the voltage at J11-5. The
voltage measures approximately
+5 V dc with the controller board
removed. If incorrect, replace the
engine board. If correct, check the
continuity of the operator panel
cable. If incorrect, replace the cable.
If correct, replace the operator panel
assembly.
Содержание 522n - C Color Laser Printer
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Страница 204: ...4 42 Service Manual 4520 xxx 6 Disconnect the interconnect card cable from the LVPS C 7 Remove the LVPS...
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Страница 233: ...Connector Locations 5 11 4520 xxx Controller Board Network...
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Страница 256: ...7 12 Service Manual 4520 xxx Assembly 5 Paper Feed Multipurpose Unit...
Страница 258: ...7 14 Service Manual 4520 xxx Assembly 6 Paper Feed Alignment...
Страница 260: ...7 16 Service Manual 4520 xxx Assembly 7 Paper Feed Output...
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Страница 306: ...7 62 Service Manual 4520 xxx Assembly 25 High Capacity Feeder...
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