Operator Panel Service Check; One Or More Operator Panel Buttons Fail; No Buttons Work - Dell 5310n - Workgroup Laser Printer B/W Service Manual

Operator panel service check

Note: The operator panel board is a separate FRU and is also part of the upper front cover FRU
When replacing any one of the following components:
Warning:
Operator panel assembly (or upper front cover)
•
System board assembly
•
Interconnect card assembly
•
Only replace one component at a time. Replace the required component and perform a POR before replacing a
second component listed above. If this procedure is not followed, the printer will be rendered inoperable. Never
replace two or more of the components listed above without a POR after installing each one or the printer will be
rendered inoperable.
Never install and remove components listed above as a method of troubleshooting components.
Warning:
Once a component has been installed in a printer, it can not be used in another printer. It must be
returned to the manufacturer.
Before continuing with this service check perform the

One or more operator panel buttons fail

FRU
Operator panel buttons kit
1
Operator panel board
System board
2
Operator panel board
Upper front cover hinge
assembly

No buttons work

FRU
Operator panel board
1
"Button Test" on page
Action
If any button fails the Button Test, check the failing button or buttons
and associated parts. Repair using the button kit. See
panel buttons removal" on page
replace the operator panel board (see
4-67. If a 950.xx error code is displayed after
removal" on page
replacing the operator panel, go to
mismatch failure" on page
Disconnect the operator panel cable from J13 on the system board
and measure the voltage at J13-5. The voltage should measure
approximately +3.3 V dc. If incorrect, replace the system board. See
"System board and inner shield removal" on page
correct, replace the operator panel board. See
board removal" on page
check the operator panel cable. If a problem is found, replace the
upper front cover hinge assembly. See
assembly removal" on page
Action
If none of the buttons work, replace the operator panel board (see
"Operator panel board removal" on page
code is displayed after replacing the operator panel, go to
through 950.29 EPROM mismatch failure" on page
3-7.
4-68. If the problem remains,
"Operator panel board
"950.00 through 950.29 EPROM
2-77.
"Operator panel
4-67. If this does not fix the problem,
"Upper front cover hinge
4-79.
4-67. If a 950.xx error
Diagnostic information
"Operator
4-77. If
"950.00
2-77.
2-107