Conditions - Ericsson I 888 Trouble-Shooting Instruction

1 Conditions

1.1 Component classifications.
After each component, which fault can be verified by the troubel-shooting guides in
this folder, is the components classification written. The components are divided in
four classes, A,B,C and D. The classes are seperated depending on how much of the
phone´s prestanda that is affected by changing the component.
Class A and B:Changing the component doesn´t affect the prestanda that much,
you only have to do a test call toward a real network before you perform a function
test after replacing it.
Class C:
ponent, since the components tolerances are so large it can affect the prestanda of
the phone.
Class D:
because of that class D-components can´t be replaced.
The phone has to be calibrated at station level after changing the com-
It demands advanced equipment and calibration at board level and
4-00021-2/FEA 209 544/5.C
I888, Standard Electrical Repairs
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