Error Indication And Troubleshooting - NAMCO Air Combat Operator's Manual

8. MAINTENANCU
BEFORE CONDUCTING ANY MAINTENANCE PROCEDURES.
8-1 Marquee 14 Volt Bulbs and Fluorescent Lamp Replacement
1) 14 Volt Bulbs
a) Replace 14 volt bulbs by opening the rear door of the Marquee Cabinet.
2) Fluorescent Lamps
a) Using the hex head wrench provided, remove the three (3) allen head
screws holding the top bracket on the Marquee Cabinet in place. See
Illustration 5-3.
b) Remove the marquee acrylic by sliding up.
c) Replace the fluorescent tubes.
d) Reverse these steps to reassemble.

8-2 Error Indication and Troubleshooting

1) When a crab shows an unusual movement, the machine automatically gives an
error indication by displaying a blinking 2 digit number in the display win-
dows of "HIT SCORE" and "HI SCOW' (same number for both windows).
At the same time an alarm sounds for one minute. When the crab's movement
is corrected, the machine resets and returns to the "power on" state.
2) The same error indication and alarm are activated in the event that the Coin
Switch remains pressed down. See table below for error indications, their
symptoms and suggested corrections.
E R R O R
INDICATION
0 0
TROUBLESHOOTING
BE SURE TO TURN THE POWER OFF
DESCRIPTION
of FAILURE
Coin Switch remains
pressed down.
With power supply on,
crabs cannot move/return
or cannot be detected
as returned.
During a game or in
a testing mode, crabs
cannot move
detected as returned.
i.e. 1,2,3,4 from the top.
In case multiple crabs are in trouble, the machine gives error indication
one by one.
Table 8-1, ERROR INDICATION
TROUBLESHOOTING
1. Remove the causa
pressed down.
2. Adjustment and replacement.
crab movement.
2. Adjust or replace sensor
3. Adjust or replace Crab Locks.
or cannot be
of being
motor.