July 1998 TC9830SM Rev. B 7/98 Confidential 65
APPENDIX E 926 KNIFE ASSEMBLY
The 926 Knife only works with a 9835 printer.

KNIFE SPECIFICATIONS

Height: 8.5 inches (216mm)
Width: 9.3 inches (236mm)
Depth: 7.6 inches (193mm)
Weight: 9.0 pounds (4.1 Kg)
Shipping Wgt: 9.5 pounds (4.3 Kg)
Power: Input Voltage; 24.0 Vdc. (From
9835 Printer).
Output Voltage: 12.0 Vdc and +5Vdc to Stacker
Assembly
Operating Limits: 40 to 104 degrees F
(4 to 40 degrees C)
Storage Limits: 15 to 120 degrees F
(-10 to 49 degrees C)
Relative Humidity: 5 to 90 percent non condensing
Speed: Up to 6.0 inches (152mm) per
second

TAG CUT DIMENSIONS

Width: 1.2 to 4.0 inches (30 mm to 102 mm)
Lengths: 1.2 to 16 inches (31 mm to 406 mm)
Thickness: 0.007 inch to 0.010 inch (0.18 mm to
0.25 mm)
NOTE: Supply roll must be wound printed side in.
Labels should not be cut.

FUNCTIONAL DESCRIPTION

The 926 Knife Assembly consists of the following
modules:
• Blade Assembly
• Drive Board
• DC Drive Motor
• Solenoid
The Knife Assembly is attached to the front of the
9835 Printer beneath the print module. It is fastened
to the printer base with three fasteners and has two
wiring harnesses that connect to the 9835 Feature
Board at connectors CN4 and CN5. A separate
harness carries power to the knife from printer control
board connector CN11. The knife drive board also
has a connector to attach cabling to the 928 Stacker
Assembly.
Functional Description
The Knife Assembly is controlled by the Feature
Board installed in the 9835 Printer. All power to the
knife is provided by the printer via cabling from the
printer control board. The rotary knife has a helical
blade positioned below the supply path and is
activated by the knife solenoid.
The knife is driven by a DC motor controlled via
software by the printer. When the knife is enabled (by
software) the motor is turned on and a solenoid,
located on the Blade Assembly, is energized, and the
knife blade completes one rotation, producing a cut
tag. (The motor runs constantly as long as there is
power to the knife.)
The Knife Assembly also has circuitry to provide 12
Vdc power and necessary control signals to the
attached 928 Stacker Assembly. The functionality of
the stacker is explained in Appendix D.

TROUBLESHOOTING

Drive Board circuits generate two error codes to assist
in the detection of knife failures. Error 759 indicates
that the knife is not moving and Error 760 indicates a
knife jam.
The following paragraphs contain suggestions for
troubleshooting the two conditions. Voltage tests are
also included to further isolate a knife failure.

Evaluation of Error 760

The printer software reports an Error 760 when a
knife jam is detected. The following checks are
suggested to correct the problem:
1. Turn printer off.
2. Check supply path for jammed tags, or obstruction
in path.