Epson LQ-670 - Page 101

LQ-670 Service Manual
Rev. A
5-
6
[Abnormal paper feed]
NO
YES
YES
NO
YES
YES
NO
YES
NO
YES
NO
Normal?
Normal?
Replace the main board
Replace the main board
Replace the main board
Replace the
printer mechanism.
Is the paper
set correctly?
Set the paper
correctly.
Replace the
printer mechanism.
Turn off the power supply.
Rotate the platen knob
manually and check if it
rotates smoothly.
Turn on the power.
Check if the paper is
fed by SW on the panel.
Is paper fed
normally?
Is the PF motor driven
normally when the
power is turned on?
Is it
driven?
Does
the knob rotate
smoothly?
Figure 5-5. Flowchart 4