Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A
TROUBLE SHOOTING Trouble on Paper Feeding 84
Confidential
Paper feeding or paper ejecting is
abnormal.
PF Encoder cannot encode PF Scale
correctly.
Carry out PF Encoder and Scale Check. (See P.368)
Any dirt or scratch on PF Scale?
Is PF Scale attached obliquely?
Is PF Encoder attached correctly?
If their attachment status is incorrect, install the
parts once again.(See P.183)(See P.184)
If PF Scale is dirty, wipe the dirt off with
ethanol. If any scratches on it, replace PF Scale.
(See P.184)
PF Belt tension is incorrect.
Measure PF Belt tension to check if it falls within the
standard. (See P.366)
If not within the standard, perform the PF Belt
tension adjustment. (See P.366)
Misadjustment of PF Motor
Motor Measurement Adjustment of PF Motor was done?
(See P.393)
Perform Motor Measurement Adjustment of PF
Motor. (See P.393)
Suction is too strong or too weak.
Check the setting of paper suction on the Printer Setup
Menu of Control Panel or the printer driver menu.
Is the suction power appropriate?
Change the setting of paper suction.
If not improved even though the setting is
changed, perform Suction Check &
Adjustment. (See P.383)
Paper feeding or paper ejecting is
abnormal.
There is abnormality of rollers in the
paper path.
Check the following rollers in the paper path if any paper
dust accumulation, damage and such.
Intermediate rollers
Paper feed rollers
Driven rollers
Eject rollers
If any paper dust accumulation on the rollers, feed
a plain paper sheet several times to remove the
paper dust.
Cannot cancel the paper jam.
There is foreign material inside the
printer.
Any foreign material inside the printer or SpectroProofer?
First turn off the printer and remove Paper Cassette
and Rear Unit, then open the printer cover. Check
the inside and remove the foreign material if any.
If SpectroProofer is attached, check the inside for
foreign material.
PE Sensor is not working.
Perform Sensor Check of the service program to check if
PE Sensor operates normally. (See P.394)
Is the sensor operating normally?
If any abnormality is found, replace PE Sensor
with a new one. (See P.394)
Paper is skewing.
Paper Skew Check is not set.
Check the Printer Setup Menu on Control Panel if the
Paper Skew Check setting is set to Off.
Change the Paper Skew Check setting to On.
Paper Size Check is not set.
Check the Printer Setup Menu on Control Panel if the
Paper Size Check setting is set to Off.
Change the Paper Size Check setting to On.
PW Sensor is not working.
Perform Sensor Check of the service program to check if
PW Sensor operates normally. (See P.394)
If any abnormality is found, replace PW Sensor
with a new one. (See P.394)
Table 2-4. Trouble on Paper Feeding
Symptom Cause Check Item Remedy
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