© 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 045
No response from MD6DC PCB1
Procedure
Check if the Yellow LED on PCB1 Blinks.
Does
the Yellow LED blink?
Y N
Attempt software download on PCB1.
Software download succeeds?
Y N
Replace
PCB1
Check dipswitches on PCB1.
Dipswitches are set to “0000”?
Y N
Set dipswitches to “0000” and restart procedure.
Check dipswitches on PCB5.
Dipswitches are set to “1001”?
Y N
Set dipswitches to “1001” and restart procedure.
Check endresistors on PCB1 (1P4) and PCB6 (6P3).
The endresistors appear to be undamaged?
Y N
Replace damaged endresistors.
Check wiring between PCB1 and PCB5.
Are there any loose or broken wires?
Y N
Check wiring between PCB5 and PCB6.
Are there any loose or broken wires?
Y N
Replace
PCB1
Replace
wiring
harness
Replace wiring harness