2007.03.07Flow2 stairliftTab 06: Systematic fault finding
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Systematic fault finding
However, electrostatic discharges certainly can disrupt electronic
circuits, corrupt data signals, and damage electronic components
or equipment.
2.6 Monitor the effect
Always check that the corrective action has solved the problem. Have the customer carry out a test
trip to see for him/herself.
2.7 Correct completion of a fault notification
You have had to replace a defective or damaged part so that the stairlift now works properly again.
You tidy up the workplace and as an extra extra service, if time allows, you can also service the
stairlift. In this way the customer will probably be most satisfied.
And now it’s time to complete the financial and administrative side of the fault notification:
1. You determine whether the fault or the damage is covered by the warranty.
2. You attach a reject label to the faulty or damaged component
which states:
- the manufacturer's number of the lift and the part number
- the date of replacement
- the appropriate fault code as specified in the TKA list
- an appropriate description of the fault
- an appropriate description of the fault notification and the
findings (what caused the fault?).
3. If required, you return the faulty component to TKA.
4. You complete the logbook, so that a later service engineer can read your findings and see how
you dealt with the notification.
Fig. 2-5 Wear the wristband!
CAUTION
For you ESD might be a pin-prick, but for a chip it’s like being struck by lightning!
Consequently, you should always take ESD precautions and wear the wristband. Connect
the wristband’s lead to a section of bare metal on the drive unit. You and the drive unit
will then have the same potential, and there will be no sparks.
Fig. 2-6 Reject label
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