Kyocera TASKalfa 5551ci - Developer Unit M EEPROM Error; Developer Unit y EEPROM Error

2L6/2N6/2N5/2N4
1-4-160
7913 Developer unit M 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 M
1. Confirm that the wiring connector is
firmly connected and, if necessary,
connect the connector all the way in.
Developer unit M and Front PWB (YC11)
Front PWB (YC2) and Engine PWB
(YC10)
2. If the wiring is disconnected, shorted or
grounded, replace the wiring.
3. Replace the Developer unit M (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).
7914 Developer unit Y 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 Y
1. Confirm that the wiring connector is
firmly connected and, if necessary,
connect the connector all the way in.
Developer unit Y and Front PWB (YC15)
Front PWB (YC2) and Engine PWB
(YC10)
2. If the wiring is disconnected, shorted or
grounded, replace the wiring.
3. Replace the Developer unit Y (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