22
TROUBLESHOOTING LOGIC / CHARTS
Always troubleshoot using logical, progressive steps so that the maintenance and repair
procedure runs smoothly and efficiently. Most failures may have minor causes such as loose
connectors or dirty contacts. Always check the following before replacing any parts:
•
Check that all the plugs and connections are seated firmly in their receptacles.
•
Check that there is continuity in the wires.
•
Check that the connector pins are not bent or broken.
Problem
Possible Cause
Corrective Action
Note:
The machine has dynamic breaking features that make it difficult to move the robot
manually when power is on.
Faulty L/R home switch
Turn the power off. Disconnect
the left / right home switch. Using
a jumper wire or small paperclip
connect the two wires that the
switch plugs into. Move the robot
6” to the right. Turn power on. If
the robot does not move replace
the left / right home switch.
PN-49500566.
Check the connection from the
controller board to the L/R home
switch.
Turn power off. Check the
computer board connection
labeled J5 and intermediate board
connections J5 and J24. If the
connections look good check
continuity from computer board J5
pins 7 & 8 to int. board J5 pins 7
& 8, and from int. board J24 pins
1 & 2 to the two wires at the left /
right home switch.
Left/Right Stuck Motor
Turn machine power off.
Manually move the robot
right about 6”. Turn
power on. If the robot
moves left:
Faulty computer board /
intermediate board
When replacing the computer
board note the software on the
defective board as well as the
position of the jumper JP1. Make
sure the software and jumper
postion are the same. Incorrect
software or jumper may cause the
machine to function improperly.
Turn power off. Locate the
computer board connection
labeled J5. Using a jumper wire or
small paperclip, connect pins 7 &
8 together through the back of the
connector. Move the robot right 6”
and turn the power on. If the robot
moves left, replace the computer
board. PN-19300529. If the robot
does not move left replace the
intermediate board.
PN-49405540.
Left/Right Stuck Motor
Turn machine power off.
Manually move the robot
right about 6”. Turn
power on. If the robot
does not move left:
Broken / binding gear
Turn power off. Examine the left /
right motor gear. Look for any
broken teeth. Manually move the
robot left and right. Check for
binding. If a replacement gear is
necessary, PN-49500406.
