102
Twin Disc, Incorporated
Troubleshooting
Power Transmission System Operator’s Manual #1020510
Table 3. Engine Status for Diagnostic Testing
Test
Running
Engine
Required
Stopped
Engine
Required
Test 1: Display Test
NO
NO
Test 2: Power Supply Test
NO
NO
Test 3: Range/Direction Selector Test
NO
YES
Test 4: Discrete Switch Test
NO
YES
Test 5: GP4 Controller Boundary Scan Test
NO
YES
Test 6: Speed Sensor & Engine Load Readout Test
YES
NO
Test 7: Miscellaneous Sensor Readout Test
NO
NO
Test 8: Powered Coil Test
YES
NO
Test 9: Converter Stall Torque Speed and Transmission Clutch Check
YES
NO
Test 10: Communication Link Tests
NO
NO
Test 11: Speed Out Test
NO
NO
Test 12: Warranty Date and Software/Hardware Version
NO
NO
Test 13: Adjust Display
NO
NO
Test 14: Sensor Calibration
NO
NO
Test 15: Fault Log
NO
NO
Test
Running
Engine
Required
Stopped
Engine
Required
Test 1: Display Test
NO
NO
Test 2: Power Supply Test
NO
NO
Test 3: Range/Direction Selector Test
NO
YES
Test 4: Discrete Switch Test
NO
YES
Test 5: GP4 Controller Boundary Scan Test
NO
YES
Test 6: Speed Sensor & Engine Load Readout Test
YES
NO
Test 7: Miscellaneous Sensor Readout Test
NO
NO
Test 8: Powered Coil Test
YES
NO
Test 9: Converter Stall Torque Speed and Transmission Clutch Check
YES
NO
Test 10: Communication Link Tests
NO
NO
Test 11: Speed Out Test
NO
NO
Test 12: Warranty Date and Software/Hardware Version
NO
NO
Test 13: Adjust Display
NO
NO
Test 14: Sensor Calibration
NO
NO
Test 15: Fault Log
NO
NO
Summary of Contents for TA-90-8501
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