Actions
Yes
No
Step 1
Check if the fuser screws are tightly fastened.
Are they tightly fastened?
Go to step 2.
Tighten the screws.
Step 2
a
Turn off the printer.
b
Remove the rear door and cover.
c
Disconnect the fuser cable connected to PCN5 of the power supply.
d
Check for approximate correct resistance on the fuser cable:
•
220 V fuser—43 ohms
•
110 V fuser—10 ohms
•
100 V fuser—8 ohms
Is the resistance equal to any of the above values?
Go to step 3.
Replace the fuser. See
“Fuser removal” on
page 238
.
Step 3
Check the following fuser components for wear or damage:
•
Gears
•
Exit rollers
•
Belt fuser
Are they free of damage?
Replace the power
supply. See
“Power
supply removal” on
page 216
.
Replace the fuser. See
“Fuser removal” on
page 238
.
Toner specks appear on prints check
Actions
Yes
No
Step 1
Check the imaging unit for wear or damage.
Is it free of wear or damage?
Go to step 2.
Replace the imaging
unit.
Step 2
Make sure the paper path is free of debris or toner contamination.
Does the problem remain?
Go to step 3.
The problem is solved.
4514
Diagnostic information
39
Summary of Contents for M1140
Page 18: ...4514 18 ...
Page 20: ...4514 20 ...
Page 142: ...4514 142 ...
Page 197: ...b Set the spring over the plunger 4514 Repair information 197 ...
Page 204: ...3 Squeeze the latches B to release the left and right links B 4514 Repair information 204 ...
Page 228: ...10 Remove the screw C and then detach the trailing edge sensor A 4514 Repair information 228 ...
Page 229: ...11 Disconnect the two springs D 4514 Repair information 229 ...
Page 246: ...3 Swing the right cover backward to remove 4 Remove the screw D 4514 Repair information 246 ...
Page 248: ...4514 248 ...
Page 253: ...4514 253 ...
Page 255: ...Assembly 1 Covers 4514 Parts catalog 255 ...
Page 257: ...Assembly 2 Electronics 1 4514 Parts catalog 257 ...
Page 259: ...Assembly 3 Electronics 2 4 3 2 1 6 5 4514 Parts catalog 259 ...
Page 261: ...4514 Parts catalog 261 ...
Page 262: ...Assembly 4 Frame 4514 Parts catalog 262 ...
Page 264: ...4514 Parts catalog 264 ...
Page 265: ...Assembly 5 Option trays 3 4 5 6 1 2 4514 Parts catalog 265 ...
Page 268: ...4514 Parts catalog 268 ...
Page 270: ...4514 270 ...
Page 274: ...4514 274 ...
Page 276: ...4514 276 ...
Page 298: ...4514 Part number index 298 ...
Page 302: ...4514 Part name index 302 ...
Page 303: ......