Kyocera TASKalfa 5551ci - Laser Scanner Unit M EEPROM Error; Laser Scanner Unit y EEPROM Error

2L6/2N6/2N5/2N4-1
1-4-162
7943 Laser scanner unit M
EEPROM error
[35 ppm/ 45 ppm/ 55 ppm
model]
Mismatch of reading data from
two locations occurs 8 times
successively.
Mismatch between writing
data and reading data occurs
8 times successively.
APC PWB M
1. Confirm that the FFC wiring connector is
not distorted and connect the FFC wiring
all the way in.
APC PWB M and LSU relay PWB (YC8)
LSU relay PWB (YC2) and Engine PWB
(YC11)
2. If the FFC wiring is disconnected,
shorted or grounded, replace the FFC
wiring.
3. Replace 1-5-43the 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).
7944 Laser scanner unit Y
EEPROM error
[35 ppm/ 45 ppm/ 55 ppm
model]
Mismatch of reading data from
two locations occurs 8 times
successively.
Mismatch between writing
data and reading data occurs
8 times successively.
APC PWB Y
1. Confirm that the FFC wiring connector is
not distorted and connect the FFC wiring
all the way in.
APC PWB Y and LSU relay PWB
(YC12)
LSU relay PWB (YC2) and Engine PWB
(YC11)
2. If the FFC wiring is disconnected,
shorted or grounded, replace the FFC
wiring.
3. 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