Epson Stylus Color 1520 Service Manual page 131

EPSON Stylus COLOR 1520
Table 5-9. Repair of M-4I60 Printer Mechanism (2)
Symptom Condition
CR motor CR moves
operates slightly at
abnormally power on
then stops.
Printing is CR moves
not normally,
performed. but does not
print.
Printing A particular
operation is dot does not
abnormal. print.
Printing
occasionally
isn't
performed.
5-14
Cause Checkpoint
CR does not move Move the CR manually and
smoothly. check if the movement is
smooth.
Check the tension of the belt. Replace the tension
Check if the PG is properly
adjusted.
The printhead FFC Check if the FFC is
is disconnected connected to the printhead
from the printhead and main board.
or main board.
The printhead FFC Check if there is current using
is damaged. the multimeter.
The ink cartridge is It might have been removed
defective. and reinstalled several times
by the user. Install a new
cartridge and run a self-test.
The printhead is Repeat cleaning at least 3
defective. times and check if the
condition is improved. If not,
replace the head unit and run
a self-test.
Ink is not ejected Repeat the cleaning sequence
straight or dots are and run a self-test.
missing because of
ink viscosity.
The printhead FFC Check if the FFC is
is disconnected connected to the printhead
from the printhead and main board.
or main board.
The printhead FFC Use a multimeter to check if
is damaged. there is current.
The printhead is Repeat cleaning at least 3
defective. times and check if the
condition is improved. If not,
replace the printhead unit and
run a self-test.
Ink is not ejected Repeat the cleaning sequence
straight or dots are and run a self-test.
missing because of
ink viscosity.
The printhead FFC Check if the FFC is
is disconnected connected to the printhead
from the printhead and main board.
or main board.
The head FFC is Check if there is current using
damaged. the multimeter.
The head is Repeat cleaning at least 3
defective. times and check if the
condition is improved. If not,
replace the head unit and run
the self-test.
Solution
Clean and lubricate the
CR guide shaft.
(Refer to Chapter 6.)
spring or timing belt.
Adjust the PG.
(Refer to Chapter 4.)
Connect the FFC
securely.
Replace the printhead
FFC.
Replace the ink
cartridge.
Replace the printhead
unit.
Clean the printhead
surface.
Connect the FFC
securely.
Connect the FFC
securely.
Replace the printhead
unit.
Clean the head surface.
Connect the FFC
securely.
Connect the FFC
securely.
Replace the head unit.