Virginia Controls, LLC MH-3000 User Manual, 1_03C10-VC Page V
7. CONTROLLER NOMENCLATURE ................. 100
8. PARTS LIST .............................................. 101
9. TROUBLESHOOTING SUGGESTIONS .......... 103
9.1 Locating Faults ..................................................... 103
9.1.1 Troubleshooting I/O Board Communication Problems ............ 104
9.2 I/O Board Replacement .......................................... 105
9.3 Factory Assistance ................................................ 105
9.4 Changes for Program Revisions ............................... 105
9.4.1 Program Revision 2D ........................................................ 105
9.4.2 Program Revision 3A ........................................................ 106
9.4.3 Program Revision 3B ........................................................ 106
9.4.4 Program Revision 3C ........................................................ 106
10. CONTROLLER MAINTENANCE .................... 108
10.1 Periodic Maintenance ............................................. 108
10.2 Parts Replacement ................................................ 108
10.2.1 CPU Exchange ................................................................. 108
10.2.2 EPROM Memory Chip Exchange .......................................... 109
10.2.3 Input/Output Board Exchange ........................................... 109
11. FREQUENTLY ASKED QUESTIONS ............. 111
11.1 Questions on Field Devices ..................................... 111
11.2 Questions on the Controller .................................... 111
INDEX