Diagnostic information 2-63
7558-xxx
126.09 IGBT temperature sensor failure
126.12 Input low current error
2
Replace the fuser driver PCBA.
Go to “Fuser driver PCBA
removal” on page 4-90.
Does the error remain?
Go to step 3. Problem resolved
3
POR the machine.
Does the error continue?
Replace the upper printer engine
PCBA.
Go to “Upper printer engine
PCBA removal” on page 4-187.
Problem resolved
Step Action and questions Yes No
1 Check the fuser driver PCBA.
Is the above component
properly connected?
Go to step 2. Replace the connections.
2
Replace the fuser driver PCBA.
Go to “Fuser driver PCBA
removal” on page 4-90.
Does the error remain?
Go to step 3. Problem resolved
3
POR the machine.
Does the error continue?
Replace the upper printer engine
PCBA.
Go to “Upper printer engine
PCBA removal” on page 4-187.
Problem resolved
Step Action and questions Yes No
1 Remove the sub LVPS PCBA. Go
to “Sub LVPS PCBA removal”
on page 4-165.
Check the fuser driver PCBA.
Is the above component
properly connected?
Go to step 2. Replace the connections.
2
Replace the fuser driver PCBA.
Go to “Fuser driver PCBA
removal” on page 4-90.
Does the error remain?
Go to step 3. Problem resolved
3
Replace the fuser assembly. Go
to “Fuser assembly removal”
on page 4-84.
Does the error remain?
Go to step 4. Problem resolved
Step Action and questions Yes No