© 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 051
FC1 Faulty
Fault code STR 051 indicates that Sensor FC1 (STR-FC1) is faulty.
Procedure
Enter service mode and select FC1 (STR-FC1) in sensors.
Value toggles between “0” and “1” when activated/deactivated?
Y N
Disconnect the connector to sensor FC1. Measure between the wires to sensor FC1 (24V and Ground)
The voltage is
approximately 24VDC?
Y N
Disconnect connector J4. Measure between the wires in Plug P4 (1 & 4)
The voltage is approximately 24VDC?
Y N
Replace
wire
harness
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 FC1 (STR-FC1)
Check for obstructions and retest procedure.
STR 052
FC2 Faulty
Fault code STR 052 indicates that Sensor FC2 (STR-FC2) is faulty.
Procedure
Enter service mode and select FC2 (STR-FC2) in sensors.
Value toggles between “0” and “1” when activated/deactivated?
Y N
Disconnect the connector to sensor FC2. Measure between the wires to sensor FC2 (24V and Ground)
The voltage is
approximately 24VDC?
Y N
Disconnect connector J4. Measure between the wires in Plug P4 (3 & 6)
The voltage is approximately 24VDC?
Y N
Replace
wire
harness
Disconnect the connector 1P13. Measure between points 11 and 12.
The voltage is approximately 5VDC?
Y N
Replace
PCB1
1.
Replace
wire
harness
2. Replace PCB2
Adjust or replace sensor FC2 (STR-FC2)
Check for obstructions and retest procedure.