31
Y
our locomotive includes built-in diagnostics to monitor the condition of the main drive motor
and smoke system. If a problem is detected, the locomotive's cab light will blink a diagnostic
code.
If you see the light inside the cab flashing, press
RESET
(for LEGACY operation),
0
(for
TMCC operation), or
DIRECTION
/power interruption (for conventional operation to attempt
to clear the problem. The locomotive will immediately check itself again. If the problem
persists, the cab light will blink the code again.
Note that smoke-related errors can be reset a maximum of three times. On the third try,
if the problem still persists, the smoke unit will be shut down and must be returned to Lionel
Service for repair.
Turning the smoke unit switch to the off position will disable diagnostic checks of
the smoke system.
Number of Blinks Diagnostic Code Description
1
Main drive motor stalled.
2
Smoke 1 element problem.
3
Smoke 1 fan problem.
4
Smoke 2 element problem.
5
Smoke 2 fan problem.
Note!
Maintaining and servicing your locomotive
Locomotive Diagnostics
A
n O-gauge coupler (non-operating) is
included with your locomotive for those
who may wish to “double-head” their trains
with a second 4-12-2 or another locomotive.
To replace the coupler, remove the chain
from the coupler lift bar by carefully opening
one link. Loosen the screw that holds the
front coupler with a small Philips screw
driver, storing the coupler and chain in a safe
location. Replace the scale coupler head with
the O-gauge coupler head and retighten the
screw. See Figure 14.
Installing the O gauge front coupler
Figure 14. Coupler installation
