Schaerer 7300 - Hand Control Display Messages Guide

SECTION II
TESTING AND TROUBLESHOOTING
Table 2-1. Troubleshooting Guide
Page 2-8Printed in U.S.A.
Problem Symptom Probable Cause Check Correction
Hand control does not
work - Continued.
When ENABLE button on
hand control is pressed, its
display does not illuminate
- Continued.
Display of hand control
board is malfunctioning.
Replace suspect hand
control board with known
working hand control
board.
Replace hand control board.
Refer to para 4.5.
Button board is
malfunctioning.
Replace suspect button
board with known
working button board.
Replace button board. Refer
to para 4.4.
When a button on hand
control is pressed, error
code E15 displays.
Button board is
malfunctioning. One of two
button switches for a
function is stuck in closed
position or will not close.
Perform a continuity
check on both button
switches of suspect
function (when a button
switch is pressed, there
should be continuity
between its two
terminals).
If check fails, replace button
board. Refer to para 4.4.
When a function button on
hand control is pressed,
the motor pump does not
run and no error codes
display.
Hand control board is
malfunctioning.
Replace suspect hand
control board with known
working hand control
board.
Replace hand control board.
Refer to para 4.5.
Button board is
malfunctioning.
Replace suspect button
board with known
working button board.
Replace button board. Refer
to para 4.4.
Main controller board is
malfunctioning.
Replace suspect main
controller board with
known working main
controller board.
Replace main controller
board. Refer to para 4.31.
Wires or wire connections
between main controller
board, distribution board,
and hand control port are
broken, loose or dirty.
See Figure 5-1 for this
check. Perform a
continuity check on all
suspect wires or
connections.
Clean any dirty connections.
Tighten any loose
connections. Replace any
broken connectors or wires.
Foot control does not
work.
Foot control operates fine
sometimes, but not every
time.
Table is in reverse
orientation.
Foot control is locked out
from being used when
table top is in reverse
orientation - foot control
may only be used when
table top is in normal
orientation.
Use hand control or set up
table top in normal orientation.
Inform operator that Foot
Control cannot be used when
table is in reverse orientation.
The hand control or
emergency override panel is
being used (hand control
and / or emergency override
panel takes priority over foot
control).
Check if problem occurrs
only when hand control
or emergency override
panel is being used.
Do not use foot control
simultaneously with hand
control or emergency override
panel. Inform operator of
Emergency Override Panel,
Hand Control, and Foot
Control priorities.
When foot switch on foot
control is pressed, nothing
happens (hand control
display should illuminate
when foot switch is
depressed).
One of two foot switches for
a function is stuck in closed
position or will not close.
See Figure 5-1 for this
check. Perform a
continuity check on both
foot switches of suspect
function (when foot
switch is pressed, there
should be continuity
between its two
terminals).
If check fails, replace foot
switch pad.
© Schaerer Mayfield USA, Inc. 2004