Installation guide
Chapter 7: Plug In and Setup          52 
Duo Camera Module LED Indicators 
The LED indicators on the Duo Camera Module show the various input and outputs that are currently active 
and affecting the Duo Hardware. 
Output LEDS 
Outputs are defined as situations where the Duo system is telling other hardware to act. (Eg. Turn on the 
Machine) These LEDs are all green and are all on the bottom row. 
  Pinsetter On  This output LED signifies when the Duo Hardware has activated the machine. 
Whenever this LED is on, the Pinsetter should also be on, unless the switches at the 
rear of the Pinsetter or at the Managers Control Desk have manually turned it off. 
  Cycle Lane  This Output LED will light every time the Duo Hardware sends a cycle command to the 
machine. 
  Bumpers Up  This Output LED will be lit whenever the Automatic Bumper system should be raised. 
Input LEDS 
Inputs are defined as situations where the Duo system is being told by other hardware that something has 
happened. (Eg. A Foul has occurred.) These LEDs are all red and are all on the top row. 
  Foul Input  This Input LED indicates that the Duo Unit is receiving a Foul signal either from the 
Foul Unit (If connected) or from the machine itself with high level pinsetters such as the 
82-90Xli and GS series. If throw a foul ball, then this LED will be lit for a few seconds. 
  2
nd
 Ball Light  This Input LED indicates that the Duo Unit is being told that the machine is on second 
ball via an optional connection to the 2
nd
 Ball Light on the Masking Unit. This is only 
done with AMF 82-70s with MP chassis, 82-70s with MK expander and 82-90 
Pinsetters and overcomes problems with the short cycle in these particular Pinsetters. 
If the Pinsetter is on second ball (and the second ball light input is fitted) then this LED 
will be on. 
Diag LEDS 
Diag LEDs are used to give additional information on the system activity of the Duo Camera Module. Both 
these LEDs are red and are on the top right corner of each bank. 
  MCU Heartbeat  This indicator shows that the Micro Controller Unit of the Duo Hardware Module is 
functioning at a hardware level. This LED is used for system diagnosis purposes only. 
  LLAN Activity  This indicator flashes whenever data is being communicated via the LLAN cable. This 
LED is used for system diagnosis purposes only. 
Note:  The  MCU  and  LLAN  LEDs  will not  flash at  the  same  time or  at  the  same 
rate.    This  is  not  a  concern.    You should  only  be  concerned  if  these 
indicators don’t flash at all. 










