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Important: Always read and follow the on-screen operating instructions.
Video Balancer
Troubleshooting
A COATS
®
Service Technician may ask for information
to help diagnose service concerns. Conveying this
information to your service technician prior to servicing
can help to expedite service to your equipment.
Although much of the diagnostic information aids your
COATS
®
Service Technician, several remedies for bal-
ancer misfunctions are available to the operator.
Note:
Always EXIT error message and repeat func-
tion to see if error is eliminated.
The following lists error screens (numbered) that may
appear indicating a problem with the balancer.
Figure 55 - Example Error Screen
Error
No
Video
Err. 1
Err. 2
Symptom
The balancer does not turn on.
Rotation signal missing.
Wheel spins too fast & no
brake.
Balancer does not start.
Motor turns nut no rotation.
Too low speed when taking the
measurement.
During turns to measure the
unbalance value, the wheel
speed has gone below 42 r.p.m.
Check
1. Check for proper connection to the power supply.
2. Check and replace fuses on the power PCB if necessary.
3. Check the monitor function - press monitor menu button. (see trou-
ble shooting tips)
4. Check control transformer output.
5. Check FS1 & FS2 fuses on power PCB.
6. Check power cable to main PCB & output at power PCB.
7. Replace power PCB.
8. Replace the main PCB.
1. Check the belt tightness.
2. Encoder disconnected, bad or damaged wiring, failed optical unit -
no reset signal.
3. Check hood switch operation.
4. Replace the encoder unit.
5. Motor disconnected or bad wiring - check for motor voltage at power
PCB - check circuit breaker - check machine power.
6. If motor hums - remove belt and check for motor rotation at pulley -
if rotation, replace capacitor.
7. Check for faulty power PCB or main PCB.
1. Very light / small wheel mounted on balancer - not enough inertia to
keep wheel rotating.
2. Check belt tightening.
3. Check the operation and adjustment of the encoder and in particu-
lar, the reset signal. (in MACHINE SELF-TEST, Pos counts from 0 to
255 and then 0 again). UP = cw, DOWN = ccw.
4. Replace the main PCB.
