Olivetti d-COLOR P2026, Service Manual, Page: 68 / 207

Check procedures/
corrective measures
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
PF heater 1 and PF heater PWB (YC1)
PF heater PWB (YC3) and PF main PWB
(YC113)
PF thermistor 1 and PF main PWB (YC114)
Check the installation of the PF thermistor 1.
Code
1640
Contents
PF heater 1 low temperature
error (paper feeder 3)
An external temperature
higher than + 5 C/+ 9 F is not
detected when one minute
elapses after PF heater 1 is
turned on.
Causes
Defective connec-
tor cable or poor
contact in the con-
nector.
PF thermistor 1
installed incor-
rectly.
Defective PF
thermistor 1.
Broken PF heater
1.
Defective PF
heater PWB or PF
main PWB.
1650 PF heater 2 low temperature
error (paper feeder 3)
An external temperature
higher than + 5 C/+ 9 F is not
detected when one minute
elapses after PF heater 2 is
turned on.
Defective connec-
tor cable or poor
contact in the con-
nector.
Replace the top heater unit (Refer to the
service manual for the paper feeder).
Replace the top heater unit (Refer to the
service manual for the paper feeder).
Replace the PF heater PWB or PF main
PWB (Refer to the service manual for the
paper feeder).
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
PF heater 2 and PF heater PWB (YC2)
PF heater PWB (YC3) and PF main PWB
(YC113)
PF thermistor 2 and PF main PWB (YC115)
Check the installation of the PF thermistor 2. PF thermistor 2
installed incor-
rectly.
Defective PF
thermistor 2.
Broken PF heater
2.
Defective PF
heater PWB or PF
main PWB.
1800 Paper feeder communica-
tion error
Communication error between
engine PWB and optional
paper feeder.
Improper installa-
tion paper feeder.
Defective connec-
tor cable or poor
contact in the con-
nector.
Defective engine
PWB.
Defective PF main
PWB.
Replace the side heater unit (Refer to the
service manual for the paper feeder).
Replace the side heater unit (Refer to the
service manual for the paper feeder).
Replace the PF heater PWB or PF main
PWB (Refer to the service manual for the
paper feeder).
Follow installation instruction carefully again.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
replace the cable.
PF main PWB (YC3) and engine PWB
(YC33)
Replace the engine PWB and check for cor-
rect operation (see page 1-5-26).
Replace the PF main PWB (Refer to the ser-
vice manual for the paper feeder).
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