Soredex Cranex Novus e, Service Manual

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62 Service manual
4. Troubleshooting CRANEX ® Novus e
Checking cables and connectors
Visually check cables for mechanical damage, cuts,
damaged insulation and twists. If a cable is damaged in
any way replace it.
If there is no obvious mechanical damage to a cable but
you think that it may be faulty, use a digital multimeter
(DMM) to check the resistance of the different wires
within the cable. An undamaged wire will have close
to no resistance (>0 ohm), a damaged wire will have a
high resistance value.
Make sure that all cables are correctly and securely at-
tached to their respective connectors. Connectors must
not be loose or misaligned. If the connector has a lock-
ing mechanism make sure that it is locked.
If you fi nd a loose or misaligned connector, disconnect
it and check for bent, broken or missing pins. If there
is damage that can be easily repaired, for example
straightening a bent pin, repair the damage and recon-
nect the connector. If the damage cannot be repaired
replace the cable.
Note that if the connector on the board is also dam-
aged, the board may also have to be replaced.
Power supply problems
Power supply problems are described in section - 4.2
Problems during start up .