Malfunction Detection And Trouble Shooting Procedures - Muratec MFX-2500 Field Engineering Manual

2-Bin/Shift Tray

6.6.3.2 Malfunction detection and trouble shooting procedures

6.6.3.2.1 Malfunction Detection (Shift Tray only)
A malfunction is detected under the following condition, causing the corresponding malfunction code to be
displayed on the machine control panel. (See "Service call error," page 4-22.)
Malfunction
Malfunction Detail
Code
Shift Tray shift
28
motion failure
6.6.3.2.2 Malfunction Troubleshooting Procedures
Step Check Item
1 Does the Shift Tray move in the initial
operation?
2 Does the Shift Tray slide smoothly when
the gear is turned manually with the Shift
Motor removed?
3 Is an output signal being sent from the
Main Board to Shift Motor?
4 Are the Shift Home Sensor and its light
blocking plate dirty?
5 Is the Shift Home Sensor output signal
properly applied to the Main Board?
Detection Timing
(When moving from home to shift position) The Shift Home
Sensor is blocked after a given period of time after the Shift
Motor has been energized (at which timing the motor is deener-
gized).
(When moving from shift to home position) The Shift Home
Sensor is not blocked even after the lapse of a given period of
time after the Shift Motor has been energized.
Result
YES Check step 4.
NO Check for contamination and improper
installation.
YES Check the wiring between the Main
Board and Shift Motor and, if it is intact,
change the motor.
NO Change the Main Board.
YES Remove foreign matter or clean.
YES Change the Main Board.
NO Check the wiring between the Main
Board and Shift Home Sensor and, if it is
intact, change the sensor.
6-71
Options
Action