
1 General notes
1–4 Section 1 © Siemens VDO Trading GmbH TU00-1318-0200302
1.3 Repair hints
Lubrication When carrying out any repair work, lubricate the relevant parts in accordance
with Section 8.
Electrical connections For details on wiring diagrams please refer to Section 7.
Plug connections Only remove mini-timer terminals and Ultrex connectors from the socket hou-
sing using the special tool designed for this purpose. Make sure that connec-
tors are plugged in correctly and provide secure contact. Please refer to
Section 3 for a workflow description.
Soldered connections Switch off the power to NEC / EC Tachographs before you carry out any sol-
dering work. Carry out all soldering work with an electrically controlled, earthed
soldering unit and the necessary expertise.
Cabling Run all cables without clamping and crushing them. The cables must not cause
any malfunctions in moving parts.
Bemerkung
• Item numbers shown in the illustrations do not represent order numbers
• For order numbers please refer to the Electronic Product Catalogue (EPC)
• Any repair work on units up to manufacturing number 9.999 will be carried
out at head office in Villingen. Complete units must be sent in for repair.
Bemerkung
With soldering you must ensure the following:
• The soldering tip must be no more than 0.5 mm.
• Do not produce any cold soldering points.
• Avoid any short circuits between the individual soldering points.
• Remove any soldering spatters.
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