2-78 Options Service Manual
4024-XXX
945.01 HCF unit NVM R/W failure
980.01 Tray 5 HCF communication failure
9 Perform a print test.
Does the error still occur?
Replace the printer
engine card
assembly.
Refer to the Printer
Service Manual.
Problem solved.
Step Check Yes No
1 Turn the main switch off and on several times.
Does the error still occur when the power is on?
Go to step 2. Problem solved.
2 Check the HCF controller card assembly and printer
engine card assembly for proper connection.
Are the connectors connected to the HCF controller
card assembly and connectors P414 and P415 on the
printer engine card assembly connected properly?
Go to step 3. Replace the
connection.
3 Perform a print test.
Does the error still occur?
Replace the HCF
controller card
assembly.
Go to “HCF
controller card
assembly removal”
on page 4-152.
Go to step 4.
Problem solved.
4 Perform a print test.
Does the error still occur?
Replace the printer
engine card
assembly.
Refer to the Printer
Service Manual.
Problem solved.
Step Check Yes No
1 Turn the main switch off and on several times.
Does the error still occur when the power is on?
Go to step 2. Problem solved.
2 Check the HCF controller card assembly and printer
engine card assembly for proper connection.
Are the connectors connected to the HCF controller
card assembly and connectors P414 and P415 on the
printer engine card assembly connected properly?
Go to step 3. Replace the
connection.
3 Perform a print test.
Does the error still occur?
Replace the HCF
controller card
assembly.
Go to “HCF
controller card
assembly removal”
on page 4-152.
Go to step 4.
Problem solved.
Step Check Yes No
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