Epson Stylus CX3100 Service Manual page 24

EPSON Stylus CX3100/3200
Observation
Faulty pump mechanism When power is turned on,
PF motor operation is
abnormal.
Ink is not absorbed at all Ejected ink does not flow
or ink absorption is poor. into Ink Eject tube.
Ink is not absorbed from
head to cap.
Troubleshooting
Table 3-4. Printer Mechanism Repair
Condition Cause
There are foreign matters on
the PF gear.
PF motor is faulty.
Pump tube is crashed.
Capping unit is faulty.
Tube is projecting from cap.
Pump tube is entangled in the
pump unit.
Dirt on cap
Faulty slide-up of cap
Troubleshooting for Printer
Check Point
Operate the platen drive gear by hand and check
whether it rotates properly.
Check whether the internal coil resistance is just
as specified and whether the harness is connected
properly. See Table 3-13, "Motor Resistance and
Check Point," on page 33.
Check tube with the naked eye.
Check capping rubber with the naked eye.
Check with the naked eye whether tube is
projecting from cap.
When cap assembly slides up completely, check
whether there is a small slack in pump tube
between cap assembly and pump unit.
Check whether any foreign matter is adhering to
cap.
Check whether two compression springs are set
on cap assembly.
Revision A
Remedy
Remove foreign matters.
Replace the printer mechanism.
Replace the printer mechanism or PF
motor.
Replace the printer mechanism or pump
unit.
Replace the printer mechanism or
capping unit.
Connect the tube correctly.
Remove the entangled pump tube
carefully, correct the tube condition and
connect it to the cap assembly.
Remove foreign matters from the cap
and if the cap is damaged, replace it
with a new one.
Set the compression springs on the cap
assembly.
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