© Ernst Nagel GmbH 2S Trimmer Service Manual en.doc Rev.1.0. 20.07.2011
56
Contents
5. Troubleshooting
(continued)
5.3 Fault Code Solutions
(continued)
STR 016
Motor5 Open Circuit
Procedure
Disconnect the motor plug M5. Enter service mode and cycle the Motor M5. Measure between the Orange and Violet wire.
The
voltage is approximately 22VDC?
Y N
Disconnect plug 5P3 from PCB1 and cycle Motor M3. Measure between points 6 and 7.
The voltage is approximately 22VDC?
Y N
Replace
PCB1
Replace
wire
harness
Replace Motor M5
STR 017
Motor6 Pulse Timeout
Procedure
STR 018
Motor6 Cycle Timeout
•
Go
to
STR 020 – Motor6 Open Circuit
Enter the Service mode and select Motor6 encoder in sensors. Slowly rotate the motor by hand and check the value on the display.
Value toggles between “0” and “1”?
Y N
Disconnect the sensor plug to Motor6 (STR-Motor6). Measure between the two wires for the sensor (5V and Signal ground).
The voltage is approximately 5VDC?
Y N
Check
wires
for
damage.
Are the wires damaged?
Y N
Go to
STR 019 Motor6 Short Circuit
Replace
wire
Harness
Replace
Sensor
Enter service mode and start Motor6.
The motor starts?
Y N
Go
to
STR 020 Motor 6 Open Circuit
Check for obstructions
