© Ernst Nagel GmbH 2S Trimmer Service Manual en.doc Rev.1.0. 20.07.2011
62
Contents
5. Troubleshooting
(continued)
5.3 Fault Code Solutions
(continued)
STR 029
Magnet1 Open Circuit
Procedure
Disconnect the Magnet1. Enter service mode and activate the Magnet. Measure between the Orange and Violet wire.
The voltage is
approximately 24VDC?
Y N
Disconnect connector J3 and activate Magnet1. Measure between the Orange and Violet wire. (Orange2&Violet4).
The
voltage is approximately 24VDC?
Y N
Disconnect plug J1 and activate Magnet1. Measure between the orange and the violet wire (Orange6 & Violet12)
The voltage is approximately 24VDC?
Y N
Disconnect connector 3p4 and 1p2, activate Magnet1. Measure between point 2 on 3p4 and point 12 on
1p2.
The voltage is approximately 24VDC?
Y N
Replace
PCB1,
reconnect
all
wires.
Run the diagnostics.
Fault code STR 029 (Open Circuit) is displayed?
Y N
No action
Replace
PCB3
Replace
wire
harness
Replace
wire
harness
Replace
wire
harness
Replace Magnet1