Scale-Tronix 5002 - Page 30

microcomputer's memory during the start-up self-test.
“E-FAIL" indicates a failure of the microcomputer's
eprom memory during the checksum test. "r-FAIL"
shows a failure of the random access memory. Both
conditions require replacement of the micracomputer.
4.60.8 NO PRINT, FOUR SHORT BEEPS
This indicates a print request was made
when a valid weight is not present. The patients
weight must be currently displayed on the scale's
readout before the printer will function, or alternately,
the "PRIOR WEIGHT" can be printed if the "PRINT"
button is pressed immediately after pressing the
“RECALL” button.
A second reason for this problem is if the print
pushbutton is pressed while a ticket is currently
printing. If this occurs simply wait for the current
ticket to complete printing before requesting another
by pressing the "PRINT" button.
4.60.9 NO PRINT, FOUR LONG BEEPS
This is a signal to signify a problem with the
printer. it is produced when the printer is not ready
to accept data from the scale. This usually indicates
a defective printer mechanism or interface board, or
a print head which is mechanically stuck and can not
return to the "home" {left most) position. Check that
the printer head assembly can move freely on its
carriage. Check for jammed paper in the printer
mechanism.
Also check for disconnected cables between the
scale's instrument board, the printer interface board,
the printer controller board, and the printer. Note that
the flex circuit from the mechanical printer assembly
must be correctly inserted in the connector marked
“CNA” on the printer interface board. Observe
LED201 on the printer controller board, it should light
immediately when the print button is pressed.
4.60.10 PRINTER RUNS BUT RESULT IS
BLANK OR FAINT
This is generally indicative of a problem with
the paper used for printing. This printer uses
“thermal” type printing paper, using ordinary plain
paper will not produce a printed result. Also, note
that since thermal printing paper is coated on one
side only, inserting the paper upside-down will result
in a blank weight ticket.
There are differences between the sensitivities of
various thermal type papers, which can result in
variations of print contrast. If a suitable local source
cannot be found order the paper directly from SCALE-
TRONIX® at the New York sales number listed in the
inside front cover of this manual. The paper is part
number 390044 / 23709.
Inspect the printer mechanism to ensure the print head
has not become dislodged or otherwise separated
from contacting the paper.
4.60.11 PRINT RESULT DISTORTED, MISSING
00766)
This can be caused by a defect in either the
printer's head assembly or the printer interface board,
Check the print head resistors with an ohmmeter.
They should measure approximately 15-20 ohms when
measured at the flexible circuit from the printer and
should all be approximately the same resistance.
(Pins 1 - 8 that mates at connector "CNA" of the
printer interface board, resistor common is pins
9/10/11.) If the print head resistors check ok the
problem may be in the printer interface board.
4.60.12 LOW BATTERY LIGHT FLASHES
DURING PRINTING
This is caused by a battery which is becoming
weak. The large amount of power demanded by the
printer taxes the battery more than regular weighing
use of the scale. Some occasional flashing while
printing is acceptable. Replace battery when possible.
4.60.13 PRINTED PAPER TICKET TEARS
POORLY, UNEVENLY
Inspect the tear bar mounted in the enclosure
top cover for signs of damage (missing teeth, cracks,
etc). A metal tear bar is available to replace the
earlier plastic version and improve the "tear-off”
performance. Check with the factory service
department (phone number & address inside front
cover) for additional details.
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