Table of Contents
Advertisement
SECTION 1. BASIC UNIT
LO GENERAL INFORMATION
Where no means of adjustment is shown or described,
the adjustments have been made and pinned at the
:ime of assembly and are described here primarily
for reference. When the adjustment cannot be ob-
;ained, check for worn or bent parts.
:1:. 1 MOTOR AND DRIVE
i. 1.
1 Intermediate Drive Pulley Adjustment
Loosen the set screws in the outer flange of the
idjustable intermediate pulley enough to clear the
:hreads of the hub. Position the flange on the hub
to give a pulley diameter which results in driving
the print clutch shaft at 300 rpm
(+O ;
-5 rpm). This
adjustment can be accomplished as follows:
N'OTE: This procedure should give a print speed of
ipproximately 112 lines per minute.
L.
Loosen the nut holding the intermediate pulley
bracket to the print unit left side frame. Posi-
tion the bracket forward and down to obtain
proper tension on both belts and tighten the hold-
ing nut.
NOTE: Step 1 ensures proper belt tension
before checking speed.
~.
Set up scope and probe M2-B02(ALD page
PRlOl).
nput
v\2-B02
)utput
v\2-B03
2ms/cm
lv/cm
lv/cm
CHAPTER 4. CHECKS, ADJUSTMENTS AND REMOVALS
3.
Sync on internal (plus) and stabilize scope
pattern.
4o
Adjust the pulley until the output from M2-B03
looks as shown (11.11,
+Oo
2; -0. 0 ms). This
timing provides an emitter disk speed of 1120 5
rpm and a print clutch shaft speed of 300 rpm
(+0; -5) rpm.
Input to
M2-B02
Output from
M2-B03
Ov
~
2.0 ms (+0.2, -0.4ms) ·.
'
~11.11
ms (+0.2,-0.0) ms
rsolar Cell ...
I
Output
Note:
Shown with print disk turning at approximately 112.5 rpm
which results in a print clutch shaft speed of 300 rpm.
5.
If
speed has been adjusted, repeat step 1.
4. 1. 2 Intermediate Drive Gear Adjustment
Adjust the eccentric pivot stud for
O.
004" maximum
backlash between the intermediate gear and each of
the gears with which it meshes.
4.2 PRINT MAGNET UNIT
4. 2. 1 Print Magnet Armature Adjustment
NOTE: The print magnet armature can be removed.
from the print magnet assembly by loosening the
.armature pivot screw (armature pivot supports two
armatures) and remove one pair of armatures.
1132 FEMM (4/67)
4-1
Advertisement
Table of Contents
