2L6/2N6/2N5/2N4
1-4-159
7911
Developer unit K EEPROM
error
No response is issued from
the device in reading/writing
for 5 ms or more and this
problem is repeated five times
successively.
Mismatch of reading data from
two locations occurs 8 times
successively.
Mismatch between writing
data and reading data occurs
8 times successively.
Developer unit K
1. Confirm that the wiring connector is
firmly connected and, if necessary,
connect the connector all the way in.
Developer unit K and Front PWB (YC9)
Front PWB (YC2) and Engine PWB
(YC10)
2. If the wiring is disconnected, shorted or
grounded, replace the wiring.
3. Replace the Developer unit K (see page
1-5-57).
Front PWB
Replace the front 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).
7912
Developer unit C EEPROM
error
No response is issued from
the device in reading/writing
for 5 ms or more and this
problem is repeated five times
successively.
Mismatch of reading data from
two locations occurs 8 times
successively.
Mismatch between writing
data and reading data occurs
8 times successively.
Developer unit C
1. Confirm that the wiring connector is
firmly connected and, if necessary,
connect the connector all the way in.
Developer unit C and Front PWB (YC13)
Front PWB (YC2) and Engine PWB
(YC10)
2. If the wiring is disconnected, shorted or
grounded, replace the wiring.
3. Replace the Developer unit C (see page
1-5-57).
Front PWB
Replace the front 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 ...
Page 204: ...2L6 2N6 2N5 2N4 5 1 4 203 ...
Page 257: ...2L6 2N6 2N5 2N4 5 1 4 256 16 Grainy image See page1 4 272 ...