77
Twin Disc, Incorporated
Troubleshooting
Power Transmission System Operator’s Manual #1020510
IS FUSE OR CIRCUIT
BREAKER CLOSED?
IGNITION SWITCH ON, DISPLAY IS BLANK
REPLACE FUSE OR
RESET BREAKER
ARE ALL SYSTEM CABLES
CONNECTED AND TIGHT
CONNECT AND TIGHTEN
DOES OUTPUT DRIVE
SEE NEXT CHART
TITLED DRIVESHAFT
WON'T TURN, DISPLAY
SHOWS D
IF AFTER 30 SECONDS,
DISPLAY REMAINS BLANK,
REPLACE DISPLAY UNIT
No
Yes
Yes
Yes
No
No
24 VOLTS PIN 1 TO 2 ON 6
PIN CONNECTOR AT
DISPLAY?
Yes
CHECK FOR BROKEN WIRES
No
Possible causes: No D.C. power to display, loose cables, failed display
Figure 6. Troubleshooting Flowchart
Summary of Contents for TA-90-8501
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