© Ernst Nagel GmbH 2S Trimmer Service Manual en.doc Rev.1.0. 20.07.2011
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Contents
5. Troubleshooting
(continued)
5.3 Fault Code Solutions
(continued)
STR 053
FC3 Faulty
Fault code STR 053 indicates that Sensor FC3 (STR-FC3) is faulty.
Procedure
Enter service mode and select FC3 (STR-FC3) in sensors.
Value toggles between “0” and “1” when activated/deactivated?
Y N
Disconnect the connector to sensor FC3. Measure between the wires to sensor FC3 (24V and Ground)
The voltage is
approximately 24VDC?
Y N
Disconnect the connector 1P13. Measure between points 24 and 25.
The voltage is approximately 5VDC?
Y N
Replace
PCB1
1.
Replace
wire
harness
2. Replace PCB2
Adjust or replace sensor FC3 (STR-FC3)
Check for obstructions and retest procedure
STR 054
FC4 or FC7 Faulty
Fault code STR 054 indicates that Sensor FC4 or FC7 (STR-FC4 or FC7) is faulty.
Procedure
Enter service mode and select FC4 or FC7 (STR-FC4 or FC7) in sensors.
Value toggles between “0” and “1” when activated/deactivated?
Y N
Disconnect the connector to sensor FC4 or FC7. Measure between the wires to sensor FC4 or FC7 (24V and Ground)
The
voltage is approximately 24VDC?
Y N
Disconnect the connector 1P13. Measure between points 8 and 9.
The voltage is approximately 5VDC?
Y N
Replace
PCB1
1.
Replace
wire
harness
2. Replace PCB2
Adjust or replace sensor FC4 or FC7 (STR-FC4 or FC7)
Check for obstructions and retest procedure