TM 10--3510--221--24
0019 00--1/2 blank
DISPLAY STATE DOES NOT CHANGE WHEN MENU
SELECTION SWITCH IS PRESSED
0019 00
THIS WORK PACKAGE COVERS:
Troubleshooting Display State Does Not Change When Menu Selection Switch Is Pressed Fault
INITIAL SETUP:
Maintenance Level
Materials/Parts
Unit
Tools and Special Tools
Equipment Conditions
Tool Kit, General Mechanics (Item 1, WP 0272 00)
Power must be applied at main control
Multimeter (Item 2, WP 0272 00)
enclosure (WP 0010 00).
1. Press menu selection switch while monitoring display status.
Does display state change to selected option?
YES Return to normal operation.
NO Go to step 2.
2. Position SW2 to OFF.
3. Open door on operator panel.
4. Remove wires connected to suspect pushbutton switch (+) and (--) terminals.
5. Press switch, then check for continuity across (+) and (--) terminals.
Does continuity exist?
YES Go to step 6.
NO Replace pushbutton switch (WP 0242 00).
6. Check wire connections between pushbutton switch and TB2 COM.
Are connections OK?
YES Go to TYPICAL DISCRETE INPUT SIGNAL FAULT (WP 0107 00) to check operation of
menu selection switch.
NO Repair as necessary.
END OF WORK PACKAGE
