NEC Super Script 4400 Maintenance Manual page 253

Code Description of Error
Cleaner Clutch
E7
E8 Fuser Clutch(FUCL)
244 SuperScript 4400 — Maintenance Guide
Cause of Error
1. Loose/Broken connection
3. Defective Cleaner Clutch
4. IOD2 Failure
5. IOD1 Failure
6. MCTL PWB Failure
IOD1
MCTL
11CN DCN1 DCN9
SGND
1
1
FBCLON-P
35 35
1. Loose/Broken connection
3. Cleaning Brush Solenoid
4. IOD2 Failure
5. MCTL PWB Failure
MCTL
12CN
20 FUCLON-P
Clearance Method
1. Check the connections between:
a) ECN11 of IOD2 and the clutch
b) ECN2 of IOD2 and DCN9 of
c) ECN1 of IOD1 and 11CN of MCTL P.W.B.
3. If voltage between ECN11-3 and ECN2-8 of
IOD2 is trailing edge then replace the
transfer solenoid.
4. If voltage between ECN2-1 and 12 of IOD2
is rising edge then replace the IOD2
5. If voltage between ECN1-35 and 1 of IOD1
is rising edge then replace the IOD1
6. Replace MCTL PWB
IOD2
ECN2
FBCLON-P ECN11
1
PGND
+24V-1
8
1
SGND FBCLON-N
12
3
1. Check the connections between:
a) ECN9 of IOD2 and the clutch
b) ECN1 of IOD2 and 11CN of MCTL P.W.B.
3. If voltage between ECN9-3 and ECN2-8 of
IOD2 is trailing edge then replace
clutch(FUCL).
4. If voltage between ECN1-20 and ECN2-12
of IOD2 is rising edge then replace the
IOD2 P.W.B.
5. Replace MCTL PWB
IOD2
ECN1 ECN9
+24V-1
1
20
FUCLON-N
3
ECN2
+24V-1
5
PGND
8
SGND
12
connector.
IOD1.
P.W.B.
P.W.B.
Cleaner Clutch
FBCL
connector.
fuser
Fuser Clutch
FUCL