Lenovo S930 Manuel d'entretien - Page 25

Parcourez en ligne ou téléchargez le pdf Manuel d'entretien pour {nom_de_la_catégorie} Lenovo S930. Lenovo S930 33 pages.
Également pour Lenovo S930 : Manuel de démarrage rapide (6 pages), Informations importantes sur le produit Manuel (20 pages)

LENOVO S930 Cellphone Service Manual

Check whether U2104 is damaged or has a

dry joint problem.

4.2.3 Phase Error is too big.

⚫

Problem: Phase Error is over the limit in whole-unit test.

⚫

Reason: Capacitors in power feeding circuits of PA module and transceiver have dry joint

problems. Or there's short circuit between these capacitors and other resistors.

⚫

Troubleshooting:

Phase Error is over the limit.

Check power feeding circuits of PA (U2102) and Transceiver

(U2101).

Replace components

which have dry joint

problems.

Frequency Error is over

the limit.

Re-calibrate.

Replace components which

have dry joint problems.

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