Ametek 387 - Page 6

vi 072-40245 B
List of Illustrations
Figure 1-1 Panel and Interface Module..................................................................................................................1-2
Figure 2-1 System Initialization.............................................................................................................................2-1
Figure 2-2 Speedometer Message Center Displays..............................................................................................2-2
Figure 3-1 Instrumentation Block Diagram............................................................................................................3-1
Figure 3-2 387 System Interface Module..............................................................................................................3-2
Figure 3-3 Pressure Circuit....................................................................................................................................3-3
Figure 3-4 Pressure, Vacuum, and Pressure/Vacuum Transducer Modules...........................................................3-4
Figure 3-5 387 Speedometer with Message Center..............................................................................................3-5
Figure 3-6 System Initialization.............................................................................................................................3-6
Figure 3-7 J1708 Data Bus Gauges ......................................................................................................................3-8
Figure 3-8 Ammeter Circuit...................................................................................................................................3-9
Figure 3-9 Voltmeter Circuit ................................................................................................................................3-10
Figure 3-10 Pyrometer Circuit.............................................................................................................................3-11
Figure 3-11 Axle and Transmission Temperature Circuits ...................................................................................3-12
Figure 3-12 Fuel Level Circuit..............................................................................................................................3-13
Figure 4-1 Two-Inch Gauge Removal and Reinstallation........................................................................................4-2
Figure 4-2 Scaleplate Alignment...........................................................................................................................4-3
Figure 4-3 Two-Inch Gauge Disassembly..............................................................................................................4-4
Figure 4-4 Removing the Interface Module...........................................................................................................4-5
Figure 5-1 Gauge Initialization...............................................................................................................................5-3
Figure 5-2 Checking Two-Inch Gauge Power.........................................................................................................5-5
Figure 5-3 Checking Pressure Gauges with Standard Test Gauge.........................................................................5-7
Figure 5-4 Checking Temperature Sensor Wiring................................................................................................5-10
Figure 5-5 Testing the Air and Fuel Restriction Gauges.......................................................................................5-12
Figure 5-6 Testing the Voltmeter Gauge ..............................................................................................................5-13
Figure 5-7 Testing the Ammeter Gauge...............................................................................................................5-15
Figure 5-8 Testing the Fuel Level Gauges............................................................................................................5-16
Figure 5-9 Testing the Pyrometer........................................................................................................................5-17
Figure 5-10 Testing the Pyrometer (continued)...................................................................................................5-18
Figure 5-11 Troubleshooting SMC Power and Ground.........................................................................................5-20
Figure 5-12 Troubleshooting the PTO (Power Take-Off) Input..............................................................................5-22
Figure 5-13 Troubleshooting the Two-Speed Axle Input......................................................................................5-23
Figure 5-14 SMC Pointer and All J1708 Data Bus Gauge Pointers Sweep..........................................................5-28
Figure 5-15 All J1708 Data Bus Gauge Pointers (except SMC) Sweep...............................................................5-29
Figure 5-16 Checking J1708 Data Bus Wire Continuity......................................................................................5-31
Figure 5-17 Checking Private Bus Wire Continuity .............................................................................................5-31
Figure 5-18 Gauge Backlighting Problem (except SMC) .....................................................................................5-35
Figure 5-19 SMC Backlighting Problem ..............................................................................................................5-36
Figure 5-20 Troubleshooting the Select and Reset Switches ..............................................................................5-37