Error code Description Action
959.xx Controller verification failure of system boot
code.
1 Update the firmware.
2 POR the printer.
3 If the problem persists, then replace the
controller board.
Go to
“Invalid firmware/controller board
service check” on page 110.
959.0x System hardware failure.
1 POR the printer.
2 If the problem persists, then replace the
controller board.
Go to
“Controller board removal” on
page 291.
NVRAM failure service check
Warning—Potential Damage: When replacing any of the following components, replace only one component at a
time or the printer will be rendered inoperable:
For CS310 models:
• Controller board
• Operator panel with UICC card
For CS410 and CS510 models:
• Controller board
• UICC card
Replace the required component, bring the printer up in Diagnostics mode (See
“Diagnostics menu” on page 166),
and verify that the problem is fixed before performing a POR.
This error indicates a mismatch between the operator panel assembly and the system board.
Actions Yes No
Step 1
For CS310 models, has the operator panel with UICC card been replaced
recently?
For CS410 and CS510 models, has the UICC card been replaced recently?
Replace the operator
panel assembly with a
new, and not
previously installed,
UICC card.
Go to step 2.
Step 2
Has the controller board been replaced recently?
Replace the controller
board with a new, and
not previously
installed, controller
board. See
“Controller
board removal” on
page 291.
Go to step 3.
Step 3
Turn the printer power off for ten or more seconds. Then, turn the printer
back on (POR the printer).
Is the error gone, and can the printer print?
Problem solved. Go to step 4.
5027
Diagnostic information
109
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