Sharp MX-C507P - Page 279

5028
Invalid firmware/controller board service check
Diagnostics and troubleshooting
245
Action
Yes
No
Step 1
Update the firmware.
Note: Contact the next level of support for the correct firmware
level.
Does the problem remain?
Go to step 2.
The problem is
solved.
Step 2
Replace the controller board. See “Controller board removal” on
page 393 .
Does the problem remain?
Contact the next
level of support.
The problem is
solved.
Actions
Yes
No
Step 6
Clear the NVRAM of the printer:
a Turn the printer off.
b With the printer off, press and hold buttons 6 , 7 , and 8 on the
keypad.
c Turn the printer on.
d When Restoring Factory Defaults appears, release
the buttons.
Note: If the printer looks up on the Restoring Factory Defaults,
then wait two minutes, and then turn the printer off. After ten
seconds or more, turn the printer back on without holding down
any buttons.
Does the problem remain?
Go to step 7.
The problem is
solved.
Step 7
Replace the control panel. See “Upper control panel removal” on
page 317 .
Does the problem remain?
Go to step 8.
The problem is
solved.
Step 8
Replace the controller board. See “Controller board removal” on
page 393 .
Does the problem remain?
Contact the next
level of support.
The problem is
solved.