Epson STYLUS COLOR 3000 Service Manual page 145

Troubleshooting
Condition
Abnormal rotation at Foreign objects
power on. are lodged in the
CR mechanism.
CR motor is
defective.
CR motor rotates, but The timing belt is
the CR unit does not damaged or
move. disengaged.
CR motor sub
pulley is
damaged.
CR moves slightly at CR does not
power on, then stops. move smoothly.
The CR moves The head FFC is
normally, but no disconnected from
printing is performed. the printhead or
main board.
The head FFC is
damaged.
The ink cartridge
is defective.
The printhead is
defective.
5-16
Table 5-7 M-4J60 Printer Mechanism Repair (continued)
Cause
Symptom: CR motor operates abnormally
Check visually if any foreign object is
in the CR mechanism.
Check if the resistance of the motor
coil is as follows:
5Ω ± 7% at 25 °C per phase
(Refer to Table 5-1.)
Check if the timing belt is installed at
the specified position in the CR unit.
Check if the timing belt is bent, worn,
or is missing some teeth.
Check if some teeth of the sub pulley
are broken.
Move the CR manually and check if it
moves smoothly.
Check if the timing belt has
appropriate tension.
Check if the platen gap is the proper
width.
Symptom: The printer does not print.
Check if the FFC is connected to the
printhead and main board.
Check if there is continuity using the
multimeter.
Install a new cartridge and run the
Self-test. (The user might have
removed and reinstalled the cartridge
several times.)
Use the driver to clean the printhead at
least 3 times. Run a nozzle test after
each cleaning. If there's no
improvement, replace the printhead
and run the self-test.
Checkpoint
EPSON Stylus Color 3000 Service Manual
Solution
Remove the foreign
object.
Replace the CR motor.
Reinstall the timing
belt properly.
Replace the timing
belt.
Replace the CR motor.
Clean and lubricate
the CR guide shaft.
(Refer to Chapter 6.)
Replace the tension
spring or timing belt.
Adjust the platen gap.
(Refer to Chapter 4.)
Connect the FFC
securely.
Replace the head
FFC.
Replace the ink
cartridge.
Replace the printhead.