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Johnson AFG Pro 7.2AT - Troubleshooting: Machine Unresponsive

Johnson AFG Pro 7.2AT
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18
CHAPTER 3: Troubleshooting
3.3.3 TROUBLESHOOTING – NO RESPONSE FOR MACHINE (CONSOLE&MOTOR)
SOLUTION:
a. Check if the console beeps when all keys are pressed. If no, replace the keypads.
b.
Enter Engineering Mode, and scroll to ENG 1 (Hardware Test).Press the key “ENTER” first and
then
the key
”STA
RT”.
-
When press the key “SPEED + / -“, if the data on windows “TIME” & “DISTANCE” is changed, the
c
onsole is ok. If not,
replace the PCB.
c. Turn off the power switch, and
open the motor upper cover. Re
move the red & black
wires of motor
from the MCB, and use a
multi-meter to measure the resistance of drive motor.
If the resistance is bigger than 10 Ω, the drive motor is defective. Replace the drive motor.
If the resistance is lower than 10 Ω, the drive motor is ok. Then,
- Check the connection of the speed
sensor (encoder disk group)
at the MCB.
- Rem
ove the speed sensor from the motor and clean it, then re-test
.
- If the speed
sensor is clean and has a good connection but still will not operate, replace the
speed
s
ensor
.
- Repl
ace the MCB as the last step if machine does still not run after to take above actions.