Olivetti d-Copia 3500MF Service Manual page 283

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Code
Contents
7810
Short-circuited outer tem-
perature sensor
The sensor input sampling is
less than 0.
7901
Drum 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.
7911
Developer unit 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.
Y113350-5
Causes
Defective connec-
Reinsert the connector. Also check for conti-
tor cable or poor
nuity within the connector cable. If none,
contact in the con-
replace the cable.
nector.
Outer temperature sensor and front PWB
(YC8)
Front PWB (YC2) and engine PWB (YC8)
Defective outer
Replace outer temperature sensor.
temperature sen-
sor.
Defective engine
Replace the engine PWB and check for cor-
PWB.
rect operation (see page 1-5-43).
Defective connec-
Reinsert the connector. Also check for conti-
tor cable or poor
nuity within the connector cable. If none,
contact in the con-
replace the cable.
nector.
Drum PWB and front PWB (YC6)
Front PWB (YC2) and engine PWB (YC8)
Defective drum
Replace the drum unit (see page 1-5-29).
PWB.
Defective connec-
Reinsert the connector. Also check for conti-
tor cable or poor
nuity within the connector cable. If none,
contact in the con-
replace the cable.
nector.
Developer unit and front PWB (YC7)
Front PWB (YC2) and engine PWB (YC8)
Defective devel-
Replace the developer unit (see page 1-5-
oper unit.
28).
1-4-41
2LL/2LJ/2LH
Check procedures/
corrective measures
Sevice Manual

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