Conditions - Ericsson T18s Trouble-Shooting Instruction

Hide thumbs Also See for T18s:

Table of Contents

1 Conditions

1.1 Component classiﬁcations.

After each component, which fault can be veriﬁed by the trouble-shooting instruc-

tions in this folder, the classiﬁcation of the component is written. The components

are divided into four classes, A,B,C and D. The classes are seperated depending on

how much of the prestanda of the phone that is affected by replacing the component.

Class A and B:Replacing the component doesn´t affect the prestanda that much,

Class C:

Class D:

you only have to do a test call towards a real network before you per-

form a function test after the exchange.

The phone has to be calibrated at station level after replacing the com-

ponent, since the components tolerances are so large it can affect the

prestanda of the phone.

It demands advanced equipment and calibration at board level and

because of that class D-components won´t be replaced.

4/00021-2/FEA 209 544/12.B

T18s, T18sc Standard Electrical Repairs

(60)

Table of Contents

T18sc