Service manual

E.3 Transfer Conveyor Adjustments
E.3a Package overhang at last station
When a package is being presented to the gripper arm (last station of the
Transfer conveyor) the package should have only the Trailing edge of the
folded document held by the flat green belts. Positioning the trailing edge of
the document even with the center line of the lower-most forward shaft
accomplishes the desired document position.
When the gripper arm removes a package from the Transfer conveyor the
flat green belts of the Transfer conveyor will creep if more than 3/4 of inch of
the package is being pinched by the flat green belts. The creeping of the flat
green belts will cause the packages to become improperly spaced in the
Transfer conveyor.
E.3b Position of the outfeed guides
It is recommended that the Transfer conveyor arm be positioned parallel to
the deck of the inserter and it should be close enough to the deck so the
outfeed guides do not need to drastically deflect the folded document. This
will help prevent the flat green belts from creeping and ease the extraction
force required to remove the folded document.
E.3c Fold quality
Constant fold quality is required or the package size can vary enough to
cause the Transfer conveyor packages to be improperly positioned in the
conveyor.
E.3d If a package spacing problem occurs
If package spacing problems occur in the Transfer conveyor it should be
purged of all the remaining documents in it. This will insure that documents
will be properly positioned.
E.3e Configuration of Exit sensor module
The Exit sensor module on the Transfer conveyor has an “active state”
selection switch on it. This switch can set to LIGHT ON or LIGHT OFF. The
proper position for the switch is LIGHT ON.
Note: This active state setting is the opposite to most of the other sensor
modules on the 420T.
E.3f Testing of the exit sensor
The Exit sensor on a 420T creates an interrupt to the control card. This
interrupt is what permits accurate position of packages on the Transfer
conveyor. Testing that the interrupt is seen is done in the following manner.
• 1. Clear Transfer conveyor of all documents
• 2. Place a folded document approximately 1/2 inch before the Exit sensor
on the Transfer conveyor.
Note: Be sure the inserter is running to supply a Demand signal.
• 3. Run the 420T and command the machine to Dump.
INTERFACE TO INSERTING EQUIPMENT
420T V6LT OPERATOR & SERVICE MANUAL ISSUE 2009/06 Rev. 6/21/2011 SECTION E – PAGE 133
071-33370-400
Gripper Arm Position Reference to 420T