2-172 MFP Service Manual
7500-XXX
950.00 through 950.29 EPROM mismatch failure
9 Perform a print test.
Does the error still occur?
Replace the 2TM/
TTM controller card
assembly.
Go to “2000-sheet
dual input (TTM)–
2TM/TTM controller
card assembly
removal” on
page 4-274.
Go to step 10.
Problem solved.
10 Perform a print test.
Does the error still occur?
Replace the printer
engine card
assembly.
Go to “Printer
engine card
assembly removal”
on page 4-117.
Problem solved.
Warning: In the event of replacement of any one of the following components:
• Operator panel assembly (universal)
• Operator panel controller card assembly
• RIP card 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.
Warning: Never install and remove components listed above as a method of troubleshooting components.
Once a component has been installed in a machine, it cannot be used in another machine. It must be returned
to the manufacturer.
Step Check Yes No
1 Check the interconnect card assembly.
Was the interconnect card assembly recently replaced?
Go to step 3. Go to step 2.
2 Check the operator panel assembly.
Was the operator panel recently replaced?
Go to step 4. Contact next level
of support.
3 Replace the current interconnect card assembly with the
original interconnect card assembly.
Does the error remain?
Go to step 5. Problem solved.
4 Replace the current operator panel with the original panel.
Go to “Operator panel assembly removal” on
page 4-136.
Does the error remain?
Go to step 6. Problem solved.
5 If problem remains, replace the original interconnect card
assembly with a new and not previously installed
interconnect card assembly.
Does the error remain?
Contact the next
level of support.
Problem solved.
Step Check Yes No
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