© 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 019
Motor6 Short Circuit
Fault code STR 019 indicates that Motor6 (STR-M6) has a Short Circuit
Initial Actions
•
Check Fuse F15 on transformer
Procedure
Disconnect the Motor plug M6. Run the diagnostics.
Fault code STR 020(Open Circuit) is displayed?
Y N
Disconnect connector J5. Check wires for Short Circuit across leads. (Orange1 & Violet4)
Is there a short Circuit?
Y N
Disconnect plug 5P2 from PCB5 Check wires for Short Circuit across leads. (Orange4 & Violet 11)
Is there a
Short Circuit?
Y N
Replace
PCB5
Replace
wire
harness
Replace
wire
harness
Replace motor STR-M6
STR 020
Motor6 Open Circuit
Procedure
Disconnect the motor plug M6. Enter service mode and cycle the Motor M6. Measure between the Orange and Violet wire.
The
voltage is approximately 22VDC?
Y N
Disconnect connector J5 and cycle Motor M6. Measure between the Orange and Violet wire. (Orange1&Violet4).
The
voltage is approximately 22VDC?
Y N
Disconnect plug 5P2 from PCB5 and cycle Motor M6. Measure between points 4 and 11.
The voltage is approximately 22VDC?
Y N
Replace
PCB5
Replace
wire
harness
Replace
wire
harness
Replace Motor M6