Epson 1520 - Stylus Color Inkjet Printer, Руководство по обслуживанию

Страница: 130 / 165

EPSON Stylus COLOR 1520
Rev. A
5-12
5.5 Repair of M-4I60 Printer Mechanism
This section provides information which allows you to repair and replace defective components of the M-
4160 printer mechanism. Table 5-8, 5-9, and 5-10 contain various symptoms and the corresponding
causes listed in order of possibility. Find the symptom in the table and troubleshoot the problem as
instructed.
Table 5-8. Repair of M-4I60 Printer Mechanism (1)
Symptom Condition Cause Checkpoint Solution
CR unit
operates
abnormally. Abnormal
operation at
power on. Cleaner lever and
CR are interfering
with each other. Check if the lock of the
cleaner lever is released
when the CR is on the paper
feeding side. Push the lever down
manually to clear out the
CR path.
Pump unit
operates
abnormally. Abnormal
rotation of
the PF
motor at
power on. Cam select
assembly or cam
change lever in
the CR unit is
defective. Check if it’s normally
operating by performing
cleaning and paper
load/eject through the
control panel
operation. Replace the cam select
assembly or cam change
lever in the CR unit.
PF motor is
defective. Check if the resistance of
the motor coil is as follows;
10 10 % at 25
••
(Refer to Table 5-1.)
Replace the PF motor.
Ink absorption
is abnormal Ink is not
drained
normally
during a Ink drain tube is
caught in the
cleaner lever of the
pump unit. Check if the tube is properly
led. Place the tube properly.
cleaning
sequence is
repeated.
But it does The tube is
disconnected from
the cap. Check if the tube is securely
installed. Install the tube securely.
not solve
the dot
missing
problem. Ink drain tube is
bent or damaged. Check if the tubes in the
pump unit and under the cap
are deformed or damaged. Replace the pump unit.
The cap is
damaged. Check if the cap is
damaged. Replace the pump unit.
The pump unit is
damaged. Rotate the pump unit
manually and check if it
rotates with the constant
resistance, or check if it is
damaged. Replace the pump unit.
Head unit is
defective. Check if signals are
transferred to the head unit. Replace the head unit.
CR motor
operates
abnormally Abnormal
rotation at
power on Foreign objects
are lodged in the
CR mechanism. Check visually if foreign
objects are lodged. Remove the foreign
objects.
. CR motor is
defective. Check if the resistance of
the motor coil is as follows;
5
•}
7% at 25
••
per
phase
(Refer to Table 5-1.)
Replace the CR unit.
CR motor
rotates, but
the CR unit The timing belt is
damaged or
dislocated. Check if the timing belt is at
the specified position in the
CR unit. Reinstall the timing belt
properly.
Does not
move. Check if the timing belt is
deformed or some teeth are
worn or broke off. Replace the timing belt.
CR motor driven
pulley is damaged. Check if the some teeth of
the pulley are missing. Replace the CR motor.