Repair Of The Printer Mechanism - Epson Stylus COLOR 800 Service Manual

EPSON Stylus &2/25 800

5.6 Repair of the Printer Mechanism

This section consists of the tables which contains symptoms, descriptions, possible causes, checkpoints,
and solutions which you need in troubleshooting the problems with the units in the printer mechanism.
Symptom
CR does not Fatal error occurs when
move properly. the printer is turned on
and CR motor fails to
rotate. (No abnormal
noise is heard.)
When the printer is
turned on, the CR
moves away from the
home position. Then
the fatal error is
indicated and the CR
stops. (No abnormal
noise is head.)
When the printer is
turned on, the foreign
noise is heard and the
fatal error occurs.
When turning on the
printer or activating the
CR, abnormal noise is
heard with the fatal
error indicated then the
CR stops.
5-16
Table 5-10. Repair of the Printer Mechanism (1)
Description Possible cause
The CR motor
connector is not
properly
connected.
CR motor coil is
open.
The timing belt is
dislocated.
HP sensor
connector is
disconnected.
Foreign objects
are lodged
between the HP
sensor terminals.
HP sensor is
defective.
CR lock lever is
not released.
Oil in the CR oil
pad is dried up.
Sliding part of
the CR unit and
the top frame is
not lubricated or
foreign objects
are lodged.
Foreign objects
are lodged
between the CR
shaft and the CR
unit.
Checkpoint
Check if the CR motor
connector cable is
properly connected to
the CN12.
Check the CR motor
coil resistance referring
to Table 5-3.
Check if the timing belt
is engaged with the CR
pinion gear or the belt
pulley.
Check if the HP sensor
connector cable is
connected to the CN6.
Check if there are
foreign objects lodged
between the HP sensor
terminals.
Check if the HP sensor
is correctly functioning
referring to Table 5-2.
1. Check the PF motor
coil resistance
referring to Table 5-3.
2. Check if the PF motor
connector cable is
connected to the
CN13.
3. Check if anything is
interfering with the CR
lock lever movement.
Release the CR lock
lever with the printer
power off and check if
the CR manually
movessmoothly.
Release the CR lock
lever with the printer
power off and check if
the CR manually
moves smoothly.
Release the CR lock
lever with the printer
power off and check if
the CR manually
moves smoothly.
Solution
Connect the CR
motor connector
cable to the CN12.
Replace the CR
motor.
Reinstall the timing
belt or replace it.
Connect the HP
sensor connector
cable to the CN6.
Remove the foreign
objects.
Replace the HP
sensor.
1. Replace the PF
motor.
2. Connect the PF
motor connector
cable to the CN13.
3. Remove the
interfering factor.
Oil the oil pad built
in the CR unit.
Oil the sliding part of
the CR unit and the
top frame, or
remove the foreign
objects.
Replace the CR oil
pad.
Clean the CR shaft
using a soft cloth.
Rev. A