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3251 Print Emitter
Hold-Down Bracket Adjustment
1.
Switch off the printer power.
2.
Remove the top cover (3052).
3.
Loosen the two screws
G.
4.
Push the emitter hold-down bracket
0
down and
toward the rear when tightening the screws. The
bracket is adjusted for two conditions:
a.
You must not have any vertical movement of
the print emitter board
G).
b.
The emitter board must slide freely when the
horizontal fine adjustment shaft
0
is turned
in either direction.
5.
Reinstall the top cover (3052).
Print Emitter Removal
1.
Switch off the printer power.
2.
Remove the top cover (3052).
3.
Disconnect P8
e
from the emitter board.
4.
Remove the emitter hold-down bracket
0
by
removing the two screws
G.
5.
Remove the emitter support shaft retaining screw
o
from the right end of the shaft.
Note: The horizontal adjustment shaft and the
spring
0
also come off; retain both.
6.
Remove the emitter board
G)
by pulling out the
left end.
3-38
SY34-0613
Print Emitter Replacement
1.
When installing the emitter, put a light coating of
IBM No. 23 grease on the bearing strips
0
and
side frame contact points •
Also, install the
spring
O.
2.
Reinstall the horizontal adjustment shaft
0
and
the emitter support shaft retaining screw
0
at the
right end of the support shaft.
3.
Reinstall the emitter hold-down bracket
0,
but
do not tighten the screws.
4.
Perform emitter hold-down bracket adjustment.
5.
Connect P8
e
to the emitter board.
6.
Perform the emitter adjustment (3253).
7.
Reinstall the top cover (3052).
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