ZF CruiseCommand 785CE, Installation And Troubleshooting Manual

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TROUBLESHOOTING TRAIN-156 Rev.B 11/01
Page 5
1.2 T
ROUBLESHOOTING
Q
UESTIONS
Prior to ever lifting a tool or stepping on board the vessel, a lot of
problems can be resolved by asking the customer the following basic
questions:
A)Is the system installed on a Single, Twin or Multiple Screw ves-
sel?
• If the system is installed on a Single Screw vessel, this ques-
tion does not have much value in narrowing down the possi-
ble causes of the fault. On the other hand, if the vessel has
twin or more screws, this question is very helpful.
1. Does the problem or symptoms occur on the Port, Starboard or both sides?
• If the problem or symptom only occurs on one side, you have
effectively eliminated 50% of the possible causes. For example,
if the symptom only occurs on the Port side, the Starboard Power
Source, Harnesses, Processor and Control Heads have been elimi-
nated as potential causes.
• If the problem occurs on both the Port and Starboard in Twin
Screw vessels or two or more in Multiple Screw applications, you
must ask yourself; what do both sides have in common? The most
likely answer to your question would be the DC Power Source.
B) How many Remote Stations are there?
• If only one Remote Station is present, not much will be
gained by asking this question. However, if more than one
Remote Station is being used, command should be taken from
one of the other Stations to see if the problem occurs from
another Station.
• If the problem occurs from more than one Remote Station, the
odds are that the Control Heads are not the cause of the trou-
ble.
• If the problem only occurs at one Remote Station, there is a
greater chance of the Control Head or the Control Head Har-
ness of being the cause.