2L6/2N6/2N5/2N4
1-4-149
7231
Short-circuited LSU therm-
istor K
The sensor input sampling is
less than 69.
LSU thermistor K
1. Confirm LSU is displayed by U139
temperature and humidity (see page 1-
3-98).
2. Confirm that the wiring connector is
firmly connected and, if necessary,
connect the connector all the way in.
Laser scanner unit and LSU relay PWB
(YC5)
LSU relay PWB (YC3) and Engine PWB
(YC12)
3. If the wiring is disconnected, shorted or
grounded, replace the wiring.
4. Replace the laser scanner unit (see
page 1-5-43).
LSU relay PWB
Replace the LSU relay PWB.
Engine PWB
1. Check the engine software and upgrade
to the latest, if necessary.
2. Replace the engine PWB (see page 1-5-
80).
7232
Short-circuited LSU therm-
istor C
The sensor input sampling is
less than 69.
LSU thermistor C
1. Confirm LSU is displayed by U139
temperature and humidity (see page 1-
3-98).
2. Confirm that the wiring connector is
firmly connected and, if necessary, con-
nect the connector all the way in.
Laser scanner unit and LSU relay PWB
(YC10)
LSU relay PWB (YC3) and Engine PWB
(YC12)
3. If the wiring is disconnected, shorted or
grounded, replace the wiring.
4. Replace the laser scanner unit (see
page 1-5-43).
LSU relay PWB
REPLACE the LSU relay PWB.
Engine PWB
1. Check the engine software and upgrade
to the latest, if necessary.
2. Replace the engine PWB (see page 1-5-
80).
Code
Contents
Related parts
Check procedures/
corrective measures
Summary of Contents for TASKalfa 3051ci
Page 5: ...2L6 2N6 2N5 2N4 1 4 4 Machine Option2 Figure 1 4 4 Paper jam location Matchine Option2 ...
Page 201: ...2L6 2N6 2N5 2N4 5 1 4 200 ...
Page 202: ...2L6 2N6 2N5 2N4 5 1 4 201 ...
Page 203: ...2L6 2N6 2N5 2N4 5 1 4 202 ...
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Page 257: ...2L6 2N6 2N5 2N4 5 1 4 256 16 Grainy image See page1 4 272 ...