Epson FX-870

Troubleshooting
Chart 4. Poor Print Quality in Self-Test
and turning on
the prlntar.
bo8rd connected
Srcurs the
connectors.
Are
any dots 1
q lsslng or
Q
drrgglng?
No
Perform thll
No
for bent or
Chmck printhead rrslstance. If
It Is not 16.5 ohms +/- 1.6 olmr
raplax thr prlnthrad.
If any prlnthmd pin Is shortrd.
use Tablo 3-5 to chack drlwrs
QZ - Q13 on tha uln bawd, and
If shorted. raplace at the sm
tlm 8s the printhead.
Epson FX-870/1170
3-13