Table of Contents
Advertisement
3360
Print
Head Solenoid
Service Check
1.
Switch off the printer power.
2.
Put the printer in test mode (3654).
3.
Switch on the printer power and observe the high
density test mode print pattern.
If
rounded char-
acters (such as 0, S, or C) are distorted at the top
or bottom, perform the solenoid adjustment.
4.
If
the characters print correctly, return the printer
to operating mode (3654).
-
Adjustment
1.
Switch off the printer power.
2.
Remove the access cover (3051).
3.
Loosen the locking nut
e
on the adjusting screw
o
and back out the screw until it is even with the
bottom of the mounting bracket
G.
4.
Remove the +24 Vdc fuse (F2) from the power
supply board.
5.
Connect a jumper wire from TP2-4
e
(ground)
to TPI-8
G.
6.
Switch on the printer power. (The solenoid is held
in the operating position.)
7.
Turn the adjusting screw
0
in until the stop pin
o
just touches the top of the stop plate
e;
tight-
en the locking nut
e.
3-72
SY34-0613
8.
Switch off the printer power.
9.
Remove the jumper wire from TP2 and TPI.
10. Reinstall the +24 Vdc fuse (F2) on the power
supply board.
11. Put the printer in test mode (3654).
12. Switch on the printer power and observe the high
density test mode print pattern.
If
rounded char-
acters such as 0, S, or C are distorted at the top
or bottom, the print head needs more adjustment.
The print head lift may be fine-adjusted by doing
the following:
a.
Switch off the printer power.
b.
Loosen the locking nut
e
and turn the
adjusting screw
0
1/4 of a turn.
Note: Turn the screw clockwise if the char-
acters are flat at the tops and bottoms; turn
the screw counterclockwise if the characters
are excessively rounded.
c.
Tighten the locking nut.
d.
Switch on the printer power and check the
print pattern again. Repeat 12a and 12b to
cancel the distortion.
13. Switch off the printer power and return the printer
to operating mode (3654).
14. Reinstall the access cover (3051).
Advertisement
Table of Contents
