Zeiss humphrey HFA II-i series, Руководство по обслуживанию на месте

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Page 2 GEN-004B
Prior to Going On-Site:
1) Obtain a Service History for the Instrument
Knowledge of previous problems will assist your troubleshooting efforts. Find out when the last
Preventive Maintenance (PM) service call was performed (if applicable). If a PM is due, or will
be due shortly, be prepared to perform this task in addition to the repair.
2) Query the Operator of the Instrument
Get a description of the problem and inform the operator that you will need him/her to
demonstrate the problem to you when you arrive. A description of the problem should include
the symptoms displayed and also the type of problem. Determining the type of problem helps
you establish your approach to solving the problem and confirming the repair. All problems can
be broadly categorized into one of three types:
► Solid Failure - the problem presents itself continuously.
► Intermittent Duplicable - the problem is intermittent in nature. Usually a specific sequence
of events reproduces the intermittent symptom, although occasionally these problems may
be random in nature. By performing the proper sequence of events, the problem can
usually be reproduced. If a sequence of events readily reproduces the problem,
examination of this sequence of events may help identify the faulty assembly.
► Intermittent Non-Duplicable - the problem is intermittent, and all reasonable attempts at
recreating the symptoms fail. These are the most difficult problems to resolve.
3) Check for Service Bulletins that Address the Problem
If a service bulletin addresses a resolution, be sure to take the necessary equipment to perform
the changes.
While On-Site:
4) Have the Operator Demonstrate the Problem
This is very important. Before doing anything, always have the operator attempt to demonstrate
the problem to you. (Of course, good judgment needs to be applied here in the case of intrusive
surgical instruments.) By having the operator demonstrate the problem, you may solve the
problem immediately, or avoid some incorrect assumptions. Having the operator demonstrate
the problem will
ALWAYS result in one of the following:
► Reveal Operator Error - You may immediately see that the cause of the problem is
operator error. You then have the opportunity to train the customer in the proper use of the
instrument, instead of spending time troubleshooting a nonexistent instrument problem.
► Demonstrate specific problem sequence - The operator will show you the specific
sequence of events needed to reproduce the problem, reducing your diagnostic time.
► Help Form Ideas - The operator may not be able to duplicate the problem. However, the
sequence of steps used to demonstrate the problem will give you ideas on how to pursue
the problem in other ways. In this case you have the opportunity to explain to the customer
the difficulty in resolving a non-duplicable problem.