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Nautilus® TreadClimber®, Model TC916 Service Manual
1. LED
Operation on
PCBAs
What this means First Action Second Action Third Action Fourth Action
GRD MOVE ERROR Unit must be reconfigured as a
TreadClimber.
Press [CLEAR].
Go to Change Machine Mode (Speed
Increase, 8, Enter, Enter), then scroll to
“TreadClimber” using the Speed Increase and
Speed Decrease keys.
MULTIPLE KEY Message appears during the
Service Test KEY TEST, if two
keys are held down simulta-
neously or if a key is pressed
while another key is stuck
closed.
If possible, press [CLEAR], then go to Diag-
nostic Mode (Speed Increase, 6, ENTER), then
scroll to “Key Test” using the Speed Increase
and Speed Decrease keys. Press each key to
identify which key is stuck.
If problem persists,
open rear console
access panel.
Disconnect main
keyboard cable
from Processor
board, and connect
an alternate
known-good key
panel. Determine
whether keys are
now operable.
If the alternate
key panel works,
replace the key
panel.
Disconnect ROC
key panel cable,
determine whether
problem persists.
If problem goes
away with ROC
(Ergo) key panel
disconnected,
check Ergo cable.
Plug alternate
Touchsensor key
panel and check
operation. Replace
either ROC cable
or key panel as
required.
Replace P51
Processor PCBA.
NOT DEFINED, then
DRIVE POWER
ERROR
Message appears when Pin
10 of the communication cable
between the P51 Processor
and VSD PCBAs are open.
Replace Communication cable which con-
nects J10 on P51 Processor PCBA on VSD
PCBA.
Replace VSD
PCBA.
Replace P51
Processor PCBA.
NTM CONFIG RQRD
This error indicates that the
P51 Processor PCBA was
manufactured for a non-Tread-
mill product such as an ellipti-
cal, stepper or bike.
Replace P51 Processor with one manufac-
tured for use in Treadmills or TreadClimbers.
OUT CUR ERROR Walkbelt motor current is too
low.
Ensure motor is connected to VSD PCBA.
Cycle power and see if problem self-clears.
Replace VSD
PCBA.
Replace Drive
Motor.
SYS OVRLD ERROR Walkbelt motor current is too
high or walkbelt motor thermal
switch has opened due to a
motor overload.
This error is usually caused by excessive
drag or friction on the deck. Closely inspect
the deck and look for signs of excessive wear.
If needed replace the belt and deck.
Let walkbelt motor
cool down and
cycle power. Motor
thermal switch may
open due to worn
belt and deck.
Replace VSD
PCBA.
Replace Drive Motor.
3. Operational
Error Codes
What this means First Action Second Action Third Action Fourth Action
ELECTRONIC TROUBLESHOOTING SUMMARY
