© 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
Before continue using the Fault Code Descriptions please make sure that all connectors are
connected.
STR 001
Motor1 Cycle Timeout
•
See
STR 004 Motor2 Cycle Timeout
STR 002
Motor1 Short Circuit
Procedure
Disconnect the Motor plug M1. Run the diagnostics.
Fault code STR 003(Open Circuit) is displayed?
Y N
Disconnect connector J6. Check wires for Short Circuit across leads. (Red1 & Black8)
Is there a short Circuit?
Y N
Disconnect plug 1P3 from PCB1. Check wires for Short Circuit across leads. (Red2 & Black3)
Is there a Short Circuit?
Y N
Replace
PCB1
Replace
wire
harness
Replace
wire
harness
Replace motor STR-M1
STR 003
Motor1 Open Circuit
Procedure
Disconnect the motor plug M1. Enter service mode, unlock and start the Motor M1. Measure between the Red and Black wire.
The
voltage is approximately 12VDC?
Y N
Disconnect connector J6 and cycle Motor M1. Measure between the Red and Black wire. (Red1&Black8).
The voltage is
approximately 12VDC?
Y N
Disconnect plug 1P3 from PCB1 and cycle Motor M1. Measure between points 2 and 3.
The voltage is approximately 12VDC?
Y N
Replace
PCB1
Replace
wire
harness
Replace
wire
harness
Replace Motor M1