Action
Yes
No
Step 3
Check the toner density sensor cable for proper connection to the
controller board.
Is it properly connected?
Go to step 4.
Reseat the cable.
Step 4
Check the toner density sensor cable for damage and pinch points.
Is it free of damage?
Replace the
controller board. See
“Controller board
removal” on
page 223
.
Replace the toner
density sensor. See
“Toner density
sensor removal” on
page 257
133 errors
133 error messages
Error code Description
Action
133.05
CTLS reading above maximum expected value.
Go to
“Unresponsive imaging unit service
.
133.06
CTLS reading below minimum expected value.
133.08
Excessive CTLS noise.
Unresponsive imaging unit service check
Action
Yes
No
Step 1
a
Check if the imaging unit is a supported and genuine Lexmark
supply. If not, then replace it.
b
Make sure that the imaging unit is properly installed.
c
Make sure that the latest firmware is installed.
Does the problem remain?
Go to step 2.
The problem is
solved.
Step 2
Check the imaging unit contacts and spring for proper installation
or damage.
Are the contacts and spring properly installed and damaged?
Go to step 3.
Go to step 5.
Step 3
Check if the imaging unit contacts and spring are beyond repair.
Are the contacts and spring beyond repair?
Contact the next
level of support.
Go to step 4.
Step 4
Straighten the imaging unit contacts and install the spring properly.
Does the problem remain?
Go to step 5.
The problem is
solved.
4514-330
Diagnostics and troubleshooting
130
Summary of Contents for MS312
Page 11: ...Part number index 335 Part name index 339 4514 330 Table of contents 11 ...
Page 12: ...4514 330 Table of contents 12 ...
Page 182: ...4514 330 182 ...
Page 214: ...5 Remove the three screws B and then remove the left front mount B 4514 330 Parts removal 214 ...
Page 230: ...5 Remove the four screws B and then remove the right front mount B 4514 330 Parts removal 230 ...
Page 234: ...b Set the spring over the plunger 4514 330 Parts removal 234 ...
Page 240: ...3 Squeeze the latches B to release the left and right links B 4514 330 Parts removal 240 ...
Page 267: ...11 Disconnect the two springs D D 4514 330 Parts removal 267 ...
Page 284: ...3 Swing the right cover backward to remove 4 Remove the screw D 4514 330 Parts removal 284 ...
Page 286: ...4514 330 286 ...
Page 291: ...4514 330 291 ...
Page 293: ...Assembly 1 Covers 4514 330 Parts catalog 293 ...
Page 295: ...Assembly 2 Electronics 1 1 2 3 4 5 7 8 9 6 4514 330 Parts catalog 295 ...
Page 297: ...Assembly 3 Electronics 2 4 3 2 1 6 5 4514 330 Parts catalog 297 ...
Page 299: ...4514 330 Parts catalog 299 ...
Page 300: ...Assembly 4 Frame 2 5 6 9 10 11 13 14 12 8 1 4 4 3 7 4514 330 Parts catalog 300 ...
Page 302: ...4514 330 Parts catalog 302 ...
Page 303: ...Assembly 5 Option trays 3 4 5 6 1 2 4514 330 Parts catalog 303 ...
Page 306: ...4514 330 Parts catalog 306 ...
Page 308: ...4514 330 308 ...
Page 312: ...4514 330 312 ...
Page 314: ...4514 330 314 ...
Page 326: ...4514 330 326 ...
Page 338: ...4514 330 Part number index 338 ...
Page 342: ...4514 330 Part name index 342 ...