Is t he spe ake r norm al? [1]
Yes
No
Re-bu ckle t he spe aker ca ble or
rep la ce t he spe ake r.
No
Rep la ce the main-deputy board
FPC. Is t he spe ake r norm al?
Rep la ce the main b oa rd .
Yes
Rep air or r eplace the main-de pu ty
bo ard FPC.
Replace the deputy board. Is t he
spe ake r no rmal?
Rep air or r eplace the depu ty b oa rd.
Yes
No
St art
End