M-4J60 Printer Mechanism Repair - Epson STYLUS COLOR 3000 Service Manual

The EEPROM must be replaced with a pre-burned chip, not a blank one.

5.5 M-4J60 Printer Mechanism Repair

This section provides information that allows you to repair and replace defective components of the M-4J60
printer mechanism. Table 5-7 contains various symptoms and the corresponding causes, listed in order of
likelihood. Find the symptom in the table and troubleshoot the problem as instructed.
Condition
The CR unit moves Cleaner lever and
abnormally at CR are interfering
power on. with each other.
Symptom: The pump unit operates abnormally
The pump unit Cam select
operates abnormally assembly or cam
at power on. change lever in
the CR unit is
defective.
The pump motor
is defective.
Ink does not drain Ink drain tube is
into the ink drain caught in the
pads normally. cleaner lever in
Cleaning is repeated, the pump unit.
but it does not solve The tube is
missing dot problem. disconnected from
the cap.
Ink drain tube is
bent or damaged.
The cap is
damaged.
The pump unit is
defective.
The printhead is
defective.
EPSON Stylus Color 3000 Service Manual
CAUTION
Table 5-7 M-4J60 Printer Mechanism Repair
Cause
Symptom: The CR unit moves abnormally.
Check if the cleaner lever lock is
released and the CR unit is on the
platen side.
Check if it is operating normally by
cleaning, loading, and ejecting paper
using the control panel.
Check if the resistance of the motor
coil is as follows;
7.7 Ω ± 10 % at 25 °C per phase
(Refer to Table 5-1.)
Symptom: Ink absorption is abnormal.
Check if the tube is properly routed.
Check if the tube is securely
connected.
Check if the tubes in the pump unit
and under the cap are bent or
damaged.
Check if the cap is damaged.
Rotate the pump manually and see if it
rotates with constant resistance. Check
if it is damaged.
Check if signals are transferred to the
printhead.
Checkpoint
EPSON Stylus COLOR 3000
Solution
Push the lever down
manually to take it out
of the CR's path.
.
Replace the cam
select assembly or
cam change lever in
the CR unit.
Replace the pump
motor.
Route the tube
properly.
Connect the tube
securely.
Replace the pump
unit.
Replace the pump
unit.
Replace the pump
unit.
Replace the printhead.
5-15