No Serv/Not Able To Connect Calls - Ericsson PF 768 Troubleshooting Instructions

PF768, Standard Electrical Repairs

2 No serv/not able to connect calls.

2.1 Finding out if the fault is Rx- or Tx-related.
Connect the phone (with signalling program) to a GSM test instrument and try to
get serv at –68.5dBm signal strength.
• If the phone doesn't get serv, proceed to section 2.2.
• If the phone gets serv, proceed to section 2.3.
2.2 The phone doesn't get serv.
Open the phone and check for liquid damages.
Make sure the back cover is intact and that it's of the right model since there are two
models available. Fig. 2.1 shows which back cover model to use.
Replace the antenna connector and try again. Note that there are several models of
the antenna connector and it's important not to mount the wrong model. Fig. 2.2
shows which antenna connector model is to be used.
Fig. 2.1
Fig. 2.2
4/00021-2/FEA 209 544/11.C
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(68)