Symptom | Probable Cause |
| Corrective Action |
|
|
|
|
| |
ECB | Control Panel | • | Power on unit. Check for 5VDC between pins 1 and 2. (Page 18) | |
MALFUNCTION |
| • | No 5VDC? Replace control panel. | |
500R, 500U |
| • | Check for 6VDC or more between pins 5 and 6 of 6PA while issuing | |
|
|
| a resistance command. |
|
|
| • No 6VDC or more? Replace control panel. | ||
|
|
|
| |
| Defective Cables | • Perform continuity check on upper section and lower section cables. | ||
|
| |||
|
| • | Replace broken cables. |
|
|
|
|
| |
| Defective ECB | • If cables test OK and voltage is correct on 5 &6 pins – replace ECB | ||
| Control Board | |||
|
| board |
| |
|
|
|
| |
|
| • If ECB does not fix- connect 6PA and 6PB. | ||
|
|
|
| |
| Optical Sensor | • Check DC volts between pins 2 and 3. Rotate blades of the motor | ||
|
| |||
|
|
| shaft, voltage should shift from 0 VDC and 5VDC. If voltage does | |
| DC Motor |
| not shift- replace EC B Board | |
| • Check for 6 VDC or more between pins 5&6 on 6 pin PBA @ ECB | |||
|
| |||
|
|
| board connection. If >6 VDC exists but motor doesn’t rotate, replace | |
|
|
| motor. |
|
|
|
|
| |
| ECB Limit Switch | • Check continuity between pins 2 and 4 of 6PB. Press lower limit | ||
|
| |||
|
|
| switch. |
|
|
| • If no continuity shift- replace ECB limit switch assembly. | ||
|
|
| ||
| Loud Continuous | • | The loud continuous tone is a safety feature designed to protect the | |
| Tone from lower |
| ECB motor. If the motor binds and cannot move the ECB board will | |
| board (ECB board) |
| divert the power from the motor to a speaker that emits this tone. If | |
|
|
| you have the continuous tone check to see if the motor is bound. | |
|
|
| Check the front pivot point | for the magnet bar and loosen the |
|
|
| bolt to allow for the motor to freely move the magnet bar. | |
Note: If motor has been bound and then freed the motor may have been weakened. If components now move freely but the motor is laboring – replace the motor.
Page 4
Support Services | Fax: | |
|
|
|
