© Ernst Nagel GmbH 2S Trimmer Service Manual en.doc Rev.1.0. 20.07.2011
52
Contents
5. Troubleshooting
(continued)
5.3 Fault Code Solutions
(continued)
STR 006
Motor2 Open Circuit
Procedure
Disconnect the motor plug M2. Enter service mode, unlock and cycle the Motor M2. Measure between the Red and Black wire.
The
voltage is approximately 22VDC?
Y N
Disconnect connector J6 and cycle Motor M2. Measure between the Red and Black wire. (Red2&Black9).
The voltage is
approximately 22VDC?
Y N
Disconnect plug 1P3 from PCB1 and cycle Motor M2. Measure between points 6 and 7.
The voltage is approximately 22VDC?
Y N
Replace
PCB1
Replace
wire
harness
Replace
wire
harness
Replace Motor M2
STR 007
Motor3 Cycle Timeout
•
See
STR 010 Motor4 Cycle Timeout
STR 008
Motor3 Short Circuit
Procedure
Disconnect the Motor plug M3. Run the diagnostics.
Fault code STR 009(Open Circuit) is displayed?
Y N
Disconnect connector J7. Check wires for Short Circuit across leads. (Red1 & Black8)
Is there a short Circuit?
Y N
Disconnect plug 5P3 from PCB5 Check wires for Short Circuit across leads. (Red2 & Black3)
Is there a Short Circuit?
Y N
Replace
PCB5
Replace
wire
harness
Replace
wire
harness
Replace motor STR-M3