Kyocera TASKalfa 5551ci - Broken Outer Temperature Sensor 1 Wire; Drum K EEPROM Error

2L6/2N6/2N5/2N4
1-4-157
7800 Broken outer temperature
sensor 1 wire
The device did not respond for
more than 5 ms during
reading, in 5 times.
Outer temperature
sensor 1
1. Confirm that the wiring connector is
firmly connected and, if necessary,
connect the connector all the way in.
Outer temperature sensor 1 and Front
PWB (YC16)
Front PWB (YC2) and Engine PWB
(YC10)
2. If the wiring is disconnected, shorted or
grounded, replace the wiring.
3. Replace the Outer temperature sensor
1.
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).
7901 Drum 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.
DR PWB-K
1. Confirm that the wiring connector is
firmly connected and, if necessary,
connect the connector all the way in.
DR PWB-K and Front PWB (YC7)
Front PWB (YC2) and Engine PWB
(YC10)
2. If the wiring is disconnected, shorted or
grounded, replace the wiring.
3. Replace the Drum 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).
Code Contents Related parts
Check procedures/
corrective measures