Muratec MFX-2500 Field Engineering Manual page 245

20
Step
Does "20" reappear even after HMOT
1
has been replaced with a new one?
21
Step
Does "21" reappear even after EMOT
1
has been replaced with a new one?
23
Step
Is LS1 fully operational? Check the
1
input data using I/O Check
Does the voltage across CN4A-6 on
PWB-A (LCC) and GND change to
2
DC5V when LS1 is blocked and to
DC0V when LS1 is unblocked?
Does EMOT turn when a drawer
3 loaded with paper is slid into the
copier?
Does the voltage across CN5A-1 on
PWB-A (LCC) and GND change from
4
DC0V to DC24V when step 3 is
performed again?
24
Step
Is LS2 fully operational?
1
Check the input data using I/O Check.
Does the voltage across CN4A-9 on
PWB-A (LCC) and GND change to
2
DC5V when LS2 is blocked and to
DC0V when LS2 is unblocked?
Does EMOT turn when a drawer
3 loaded with paper is slid into the
copier?
Does the voltage across CN5A-1 on
PWB-A (LCC) and GND change from
4
DC0V to DC24V when step 3 is
performed again?
25
Step
Does "25" reappear even after PWB-A
1 (LCC) has been replaced with a new
one?
Check Item
Check Item
Check Item
Check Item
Check Item
Result
Change PWB-A (LCC), PWB-A (Paper
YES Feed Unit), PWB-A (Cassette Main
Board), or PWB-A, in that order.
Result
Change PWB-A (LCC), PWB-A (Paper
YES Feed Unit), PWB-A (Cassette Main
Board), or PWB-A, in that order.
Result
YES Perform step 3 and onward.
Change PWB-A (LCC), PWB-A (Paper
Feed Unit), or PWB-A (Cassette Main
YES
Board), in that order.
NO Change LS1.
Check gears and couplings for proper
YES engagement and, if they are okay,
change PWB-A.
Check various parts for possible
YES overload and, if they are okay, change
EMOT.
Change PWB-A (LCC), PWB-A (Paper
Feed Unit), PWB-A (Cassette Main
NO
Board), or PWB-A, in that order.
Result
YES Perform step 3 and onward.
Change PWB-A (LCC), PWB-A (Paper
YES Feed Unit), or PWB-A (Cassette Main
Board), in that order.
NO Change LS2.
Check gears and couplings for proper
YES engagement and, if they are okay,
change PWB-A.
Check various parts for possible
YES overload and, if they are okay, change
EMOT.
Change PWB-A (LCC), PWB-A (Paper
NO Feed Unit), PWB-A (Cassette Main
Board), or PWB-A, in that order.
Result
Change PWB-A (Paper Feed Unit),
YES PWB-A (Cassette Main Board), or
PWB-A, in that order.
4-31
Action
Action
Action
Action
Action